Zeitschriftenartikel: „Waste heat recovery boiler“

1

Yanai, Eiji, und Tetsuzo Kuribayashi. „Waste heat recovery boiler“. Atmospheric Environment (1967) 22, Nr. 2 (Januar 1988): ii. http://dx.doi.org/10.1016/0004-6981(88)90065-0.

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2

Hoizumi, Shinichi, und Tsugutom Teranishi. „5109665 Waste heat recovery boiler system“. Environment International 19, Nr. 1 (Januar 1993): II. http://dx.doi.org/10.1016/0160-4120(93)90032-d.

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3

White, Martin. „4448136 Boiler with waste heat recovery“. Journal of Heat Recovery Systems 5, Nr. 2 (Januar 1985): iv. http://dx.doi.org/10.1016/0198-7593(85)90057-8.

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4

Manickam, M., M. P. Schwarz und J. Perry. „CFD modelling of waste heat recovery boiler“. Applied Mathematical Modelling 22, Nr. 10 (Oktober 1998): 823–40. http://dx.doi.org/10.1016/s0307-904x(98)10020-3.

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5

Baradey, Y., M. N. A. Hawlader, Ahmad Faris Ismail und Meftah Hrairi. „WASTE HEAT RECOVERY IN HEAT PUMP SYSTEMS: SOLUTION TO REDUCE GLOBAL WARMING“. IIUM Engineering Journal 16, Nr. 2 (30.11.2015): 31–42. http://dx.doi.org/10.31436/iiumej.v16i2.602.

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Energy conversion technologies, where waste heat recovery systems are included, have received significant attention in recent years due to reasons that include depletion of fossil fuel, increasing oil prices, changes in climatic conditions, and global warming. For low temperature applications, there are many sources of thermal waste heat, and several recovery systems and potential useful applications have been proposed by researchers [1-4]. In addition, many types of equipment are used to recover waste thermal energy from different systems at low, medium, and high temperature applications, such as heat exchangers, waste heat recovery boiler, thermo-electric generators, and recuperators. In this paper, the focus is on waste heat recovery from air conditioners, and an efficient application of these energy resources. Integration of solar energy with heat pump technologies and major factors that affect the feasibility of heat recovery systems have been studied and reviewed as well.Â KEYWORDS: waste heat recovery; heat pump.

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Seyedan, B., P. L. Dhar, R. R. Gaur und G. S. Bindra. „Optimization of Waste Heat Recovery Boiler of a Combined Cycle Power Plant“. Journal of Engineering for Gas Turbines and Power 118, Nr. 3 (01.07.1996): 561–64. http://dx.doi.org/10.1115/1.2816684.

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In the present work a procedure for optimum design of waste heat recovery boiler of a combined cycle power plant has been developed. This method enables the optimization of waste heat recovery boiler independent of the rest of the system and the design thus obtained can directly be employed in an existing plant.

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Bichevin, Vladislav, und Nina Sosnovskaya. „PROTECTION AGAINST CORROSION OF THE TECHNOLOGICAL EQUIPMENT OF THE OIL REFINING ENTERPRISE“. Modern Technologies and Scientific and Technological Progress 2020, Nr. 1 (16.06.2020): 23–24. http://dx.doi.org/10.36629/2686-9896-2020-1-23-24.

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A method for slowing down the corrosion of heat exchangers in the T-104 and T102 heat recovery boiler blocks is considered. PK-1 Aminate was selected as the most suitable inhibitor for process heat exchangers of the waste heat recovery boiler unit

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Xiao, Zhong Zheng, Shu Zhong Wang und Jian Ping Yang. „Research on Recovering Waste Heat from Liquid Produced in Heavy Oil Exploitation by SAGD Technology“. Advanced Materials Research 960-961 (Juni 2014): 410–13. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.410.

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In order to enhance the economy of steam assisted gravity drainage (SAGD) technology, researches were conducted on the technology for recovering heat from liquid produced from oil wells. In this study, spiral-plate heat exchanger has been chosen after comparison and analysis, which is used to recover the heat from the produced liquid and raise the temperature of the softened water used in steam injection boilers. The procedures are liquid produced from the wellhead enters a metering and transfer station for degasification and then enters a centralized heat exchanger station where its temperature is reduced to 100°C from 170°C and the temperature of softened water used as boiler feed water is increased to 110°C from 70°C. The result shows that the fuel gas consumption will drop by 907200Nm3 for each boiler annually when the liquid heat recovery technology is adopted.

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Zhou, Y., Z. Liu und A. Golyanin. „Simulation of Waste Heat Recovery From Ship Boiler Exhaust Gas“. Bulletin of Science and Practice 6, Nr. 4 (15.04.2020): 232–42. http://dx.doi.org/10.33619/2414-2948/53/27.

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The heat pipe type waste heat recovery system can effectively reduce energy consumption when the ship is sailing in a polar region, so it has great engineering application value. In order to improve the design of the heat pipe waste heat recovery system and ensure that the design parameters meet the design requirements, this project has carried out a three-dimensional simulation analysis of the internal flow field of the heat pipe waste heat recovery system. Through reasonable model processing, application of boundary conditions, and the assignment of physical attributes the flow field characteristics of the key positions of the heat pipe type waste heat recovery system were obtained scientifically and effectively. The model was simulated and calculated, and the flue gas temperature distribution in the evaporator heat exchange tube, the overall temperature distribution of the waste heat recovery system, and the temperature change curve from the cold water entering the condenser to the steady state were obtained. The change curve of the thermal efficiency of the system during the temperature of the flue gas from the evaporator to the steady state.

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Joshi, Pratik M., Shekhar T. Shinde und Kedarnath Chaudhary. „A Case Study on Assessment Performance and Energy Efficient Recommendations for Industrial Boiler“. International Journal of Research and Review 8, Nr. 4 (06.04.2021): 61–69. http://dx.doi.org/10.52403/ijrr.20210410.

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As India is a developing country, industrialization is increasing day by day and there is a great need for industry energy audit. Audit helps to maintain and save energy from being wasted and helps in achieving highest efficiency of industrial equipment. This paper contains an actual industry audit report on boiler performance. This paper contains a report on Thermal analysis of boilers, thermal skin heat loss of boilers, O2 percentage control in flue gases to standard values, effect of coal additive, etc. This paper also contains a report on waste heat recovery options for thermal boiler, flue efficiency monitor, infrared thermometer, ultrasonic peak detector IR thermal imager. These equipment are used for energy assessment of boilers. Thermography survey of boiler surface is carried out to estimate the radiation and the other losses and the result of this total annual saving after insulation repairing or maintenance is Rs.8.48 lakh and investment is around Rs.6.31 lakh. Economizer performance of both the ISGEC and Thermax boiler can be improved with the help of suggested measures. It will help to save approximately rupees Rs.38.42 Lakh annually and investment on maintenance cost is negligible. In short, this paper deals with assessment of all boilers, evaluates their efficiencies and losses to identify energy saving opportunities and presents them in a report with their payback periods. Keywords: Energy, Energy audit, assessment, boiler.

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Duan, Wenjun, Xiaojun Lv, Zhimei Wang und Dan Zhao. „Exergy analysis of the multi-stage slag waste heat recovery system“. E3S Web of Conferences 194 (2020): 01002. http://dx.doi.org/10.1051/e3sconf/202019401002.

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Based on the black-box model, this paper analyzed the multi-stage slag waste heat recovery system. The exergy efficiency, the exergy loss coefficient and the exergy loss rate were adopted as evaluation indexes to investigate the energy consumption and the weakness of the system. Meanwhile, the performance of waste heat recovery was analyzed by comparing the comprehensive exergy efficiency between the system and other conventional waste heat recovery methods. The results showed that the comprehensive exergy efficiency of the system reached 75.75%, which was much higher than other methods, and the weakness of the system was the subsystem of waste heat boiler. In general, the system recovered the slag waste heat effectively and converted coal to clean syngas through gasification reaction, which had incredible potential in energy saving, emission reduction and consumption reduction.

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Pattanapunt. „WASTE HEAT RECOVERY FROM BOILER OF LARGE-SCALE TEXTILE INDUSTRY“. American Journal of Environmental Sciences 9, Nr. 3 (01.03.2013): 231–39. http://dx.doi.org/10.3844/ajessp.2013.231.239.

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13

Bao, Lingling, Jiaying Wang, Jinggang Wang und Zheng Yu. „The heat recovery technologies of mine waste heat sources“. World Journal of Engineering 14, Nr. 1 (13.02.2017): 19–26. http://dx.doi.org/10.1108/wje-11-2016-0125.

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Purpose Currently, China is the largest coal producer and consumer in the world. Underground mining is the main practice. In the process of deep mining, large amounts of low-temperature waste heat are available such as in the mine return air (MRA), mine water (MW), bathing waste water (BWW), etc. Without recycling, the low-temperature waste heat is discharged directly into the atmosphere or into the drainage system. The temperature range of the MRA is about 15-25°C, the relative humidity (RH) of the MRA is above 90 per cent, the temperature range of MW is about 18-20°C and the temperature of the BWW is about 30°C. All of the above parameters are relatively stable throughout the year, and thus MRA, MW and BWW are proper low-temperature heat sources for water source heat pump (WSHP) systems. The study aims to introduce the schemes for recycling the different waste heat sources and the relevant key equipment and technology of each waste heat recycle system; analyze the heat recovery performances of the MRA heat recovery technology; and compare the economies between the MRA heat recovery system and the traditional system. Design/methodology/approach Based on the WSHP system, heat and mass transfer efficiencies were calculated and analyzed, the outlet air velocity diffusion of the heat and mass transfer units and the parameters including air flow rate, the MRA’s dry bulb temperatures and wet bulb temperatures at inlet and outlet of MRA heat exchanger were tested. Then, it was assessed whether this system can be applied to an actual construction. An actual reconstructive project of MRA heat recovery system is taken as an example, where the cost-saving effects of heat recovery of mine waste heat sources system are analyzed. Findings Analysis of field test reveals that when heat transfer is stable, heat transfer capacity can be achieved: 957.6 kW in summer, 681 kW in winter and a large amount of heat was recycled. In an economic analysis, by comparing initial investment and 10 years’ operation cost with the traditional boiler and central air conditioning system, the results show that although the MRA system’s initial investment is high, this system can save CNY 6.26m in 10 years. Originality/value MRA has a large amount of air volume and temperature that is constant throughout the year, and hence is a good low-temperature heat source for the WSHP system. It can replace boiler heating in winter and central air conditioning refrigeration in summer. The study reveals that this technology is feasible, and has good prospects for development.

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Kornienko, Victoria, Mykola Radchenko, Roman Radchenko, Dmytro Konovalov, Andrii Andreev und Maxim Pyrysunko. „Improving the efficiency of heat recovery circuits of cogeneration plants with combustion of water-fuel emulsions“. Thermal Science, Nr. 00 (2020): 154. http://dx.doi.org/10.2298/tsci200116154k.

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When using modern highly efficient internal combustion engines with lowered potential of exhaust heat the heat recovery systems receive increasing attention. The efficiency of combustion exhaust heat recovery at the low potential level can be enhanced by deep cooling the combustion products below a dew point temperature, which is practically the only possibility for reducing the temperature of boiler exhaust gas, while ensuring the reliability, environmental friendliness and economy of power plant. The aim of research is to investigate the influence of multiplicity of circulation and temperature difference at the exit of exhaust gas boiler heating surfaces, which values are varying as 20, 15, 10?C, on exhaust gas boiler characteristics. The calculations were performed to compare the constructive and thermal characteristics of the various waste heat recovery circuits and exhaust gas boiler of ship power plant. Their results showed that due to application of condensing heating surfaces in exhaust gas boiler the total heat capacity and steam capacity of exhaust gas boiler increases. The increase of exhaust gas boiler heat capacity is proportional to the growth of its overall dimensions. A direct-flow design of the boiler provides a significant increase in heat efficiency and decrease in dimensions. In addition, a direct-flow boiler circuit does not need steam separator, circulation pump, the capital cost of which is about half (or even more) of heating surface cost.

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Tuński, Tomasz, Cezary Behrendt und Marcin Szczepanek. „Mathematical Modeling of the Working Conditions of the Ship’s Utilization Boiler in Order to Evaluate Its Performance“. Energies 12, Nr. 16 (13.08.2019): 3105. http://dx.doi.org/10.3390/en12163105.

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The paper presents a mathematical model allowing the determination of the amount of saturated steam produced in marine water tube boilers and smoke tube boilers. The mathematical model includes the impact of the exhaust gas temperature and its amount, ambient temperature, engine power load, and location of boiler tubes. In addition to the amount of steam generated in a boiler, it is also feasible to establish flow resistance of the exhaust gas in the boiler determined by the boiler tubes’ arrangement and the thickness of scale deposits and the exhaust gas temperature after the exhaust gas boiler. Due to the model universality, it may be applied not only to make calculations for existing boilers, but also to perform numerical experiments in order to determine the amount of steam produced by the entire range of boilers used in the waste heat recovery systems in power marine systems and the adopted limit values, such as exhaust gas flow resistance and their temperature, after the boiler. The reliability of the obtained results has been revised by comparing them with the outcomes of the experiments performed on the ships.

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Teng, Da, Liansuo An, Guoqing Shen, Shiping Zhang und Heng Zhang. „Experimental Study on a Ceramic Membrane Condenser with Air Medium for Water and Waste Heat Recovery from Flue Gas“. Membranes 11, Nr. 9 (13.09.2021): 701. http://dx.doi.org/10.3390/membranes11090701.

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Ceramic membrane condensers that are used for water and waste heat recovery from flue gas have the dual effects of saving water resources and improving energy efficiency. However, most ceramic membrane condensers use water as the cooling medium, which can obtain a higher water recovery flux, but the waste heat temperature is lower, which is difficult to use. This paper proposes to use the secondary boiler air as the cooling medium, build a ceramic membrane condenser with negative pressure air to recover water and waste heat from the flue gas, and analyze the transfer characteristics of flue gas water and waste heat in the membrane condenser. Based on the experimental results, it is technically feasible for the ceramic membrane condenser to use negative pressure air as the cooling medium. The flue gas temperature has the most obvious influence on the water and heat transfer characteristics. The waste heat recovery is dominated by latent heat of water vapor, accounting for 80% or above. The negative pressure air outlet temperature of the ceramic membrane condenser can reach 50.5 °C, and it is in a supersaturated state. The research content of this article provides a new idea for the water and waste heat recovery from flue gas.

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Hong, Wen Peng, und Hui Zhang. „Application of PTFE Heat Exchanger in Low Temperature Waste Heat of Big Coal-Fired Power Plants“. Applied Mechanics and Materials 789-790 (September 2015): 503–7. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.503.

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With the rapid development of the national economy, the use of low-temperature heat in thermal power plant boiler can not be ignored.Although low temperature economizer is widely used in low-temperature waste heat recovery of thermal power plant boiler, the problems of corrosion and fouling are very significant.New type PTFE heat exchanger filled with high thermal conductivity properties can replace the existing metal heat exchanger, fundamentally solve the problems of corrosion and fouling, meet the future development of the thermal power plant, and realize the energy recycling to maximize the benefit of energy.

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Song, Yi Feng, Ze Hua Liu und Si Li. „An Application Analysis of Solution Circulation Heat Recovery System in Natural Gas Fired Boiler“. Applied Mechanics and Materials 700 (Dezember 2014): 682–85. http://dx.doi.org/10.4028/www.scientific.net/amm.700.682.

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In this paper, a new system which absorbs the water vapor in flue gas of natural gas fired boiler (NGFB) by desiccant solution is introduced. This system can recover the latent heat of water vapor and improve the thermal efficiency of the NGFB significantly. In the theoretical analysis, the packed tower which is the most important equipment of solution circulation heat recovery system (SCHRS) can be designed by establishing a mathematical model. Based on the recovery efficiency of water vapor by desiccant solution absorption, the thermal efficiency analysis of NGFB is discussed, which show that SCHRS has a good application prospect in NGFB waste heat recovery.

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Zhang, Chang Shun, Gang Xu und Tong Liu. „Thermodynamic Analysis of the Integrated Waste Heat Recovery System for Power Plant“. Advanced Materials Research 816-817 (September 2013): 698–701. http://dx.doi.org/10.4028/www.scientific.net/amr.816-817.698.

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The thermal loss from the exhaust flue gas accounts for a large proportion of the thermal loss in the boiler. Under the pressure from the strict emission reduction policy and the rising fuel price, how to improve the fuel utilization ratio and reduce the coal consumption rate is of great significance in the electric industry. Based on the conventional waste heat recovery system, this paper proposes an integrated waste heat recovery system in reference with the German Niederaussem power generation unit. The integrated system improves the fuel utilization ratio and effectively utilize the waste heat with great economic benefits.

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Deng, Lei, Chunli Tang, Xiaowen Tan, Ke Sun, Song Wu und Defu Che. „A study on air-cooling waste heat recovery from molten slag of slag-tap boilers“. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy 231, Nr. 5 (14.04.2017): 371–81. http://dx.doi.org/10.1177/0957650917704597.

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For a better utilization of Zhundong coals which have high fouling and slagging tendency, the slag-tap boiler has attracted much attention. To avoid the high sensible heat loss of discharged molten slag, an air-cooling waste heat recovery system is proposed. Energy and economic analyses are conducted to investigate the effectiveness of heating the desulfurized flue gas by hot air and the influences of partially substituting the secondary air by hot air on heat transfer of air preheater and thermal efficiency of boiler. A case study is performed by referring to a typical 50 MW cyclone boiler with nine types of low fusion temperature coals. The results show that for coals with low ash content, the temperature increment of desulfurized flue gas can be over 7 ℃. While for coals with high ash content, the flue gas temperature can be heated to more than 70 ℃, and the surplus hot air can be sent to the furnace. When the hot air is introduced to partially substitute the secondary air, an instantaneous impact on the air preheater will give rise to a decrement of quantity of heat transferred and increments of temperatures of exit flue gas and hot secondary air. The variations of these thermodynamic parameters become smaller with increasing hot air temperature. After introduction of hot air, the thermal efficiency of boiler can increase, resulting in a decrease of fuel consumption rate. In addition, the heating surface area of air preheater can be reduced.

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Liu, Jun Xiang, Qing Bo Yu, Chen Xi Dou und Rong Li. „Experimental Study on Heat Transfer Characteristics of Apparatus for Recovering the Waste Heat of Blast Furnace Slag“. Advanced Materials Research 97-101 (März 2010): 2343–46. http://dx.doi.org/10.4028/www.scientific.net/amr.97-101.2343.

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Dry granulation, as a new process of molten BF slag treatment, is an attractive alternative to water quenching. The medium in the heat exchanging process is air which results in low efficiency. Therefore, the technique for waste heat of molten BF slag recovery is exploited. The waste heat is recovered by waste heat boiler which produces high pressure steam for generating electricity. The heat transfer characteristics of apparatus were investigated. The results show that the overall heat transfer coefficient can reach 111W/ (m2•K) and the heat recovery can reach 90% at most. If slag granule diameter is less than 2.5mm and descending velocity is higher than 1.0mm/s, the cooling rate of slag granule is over 10K/s. Then slag granules can be used as nicer materials to produce Portland cement. When slag granule descending velocity equaled to 1.1mm/s and the flux of water equaled to 0.15m3/h, small quantity of steam appeared in the first and second row tubes. They proved the feasibility of this technique. The application of this technique has a significant social meaning.

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WATANABE, Shota, Keisuke SUSUKI, Niro NAGAI und Ken-ichi FUKUSHIMA. „D131 Snow-Melting System by Waste Heat Recovery of Boiler using Heat Pipe BACH“. Proceedings of the National Symposium on Power and Energy Systems 2014.19 (2014): 123–26. http://dx.doi.org/10.1299/jsmepes.2014.19.123.

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Srikanth, S., B. Ravikumar, Swapan K. Das, K. Gopalakrishna, K. Nandakumar und P. Vijayan. „Analysis of failures in boiler tubes due to fireside corrosion in a waste heat recovery boiler“. Engineering Failure Analysis 10, Nr. 1 (Februar 2003): 59–66. http://dx.doi.org/10.1016/s1350-6307(02)00030-4.

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Liu, Yan Feng, Peng Cheng Wang und Shao Shan Zhang. „The Comparison and Analysis of the System Utilizing the General Boiler Flue Gas Waste Heat“. Advanced Materials Research 926-930 (Mai 2014): 829–32. http://dx.doi.org/10.4028/www.scientific.net/amr.926-930.829.

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Flue gas recycling system is an effective way of saving energy and improving efficiency for coal-fired power plant. In this paper, the general low-temperature economizer, heat pipe type low temperature economizer, composite phase change heat recovery system are introduced. Combined with a 600MW unit parameters, the economies of various waste heat recovery system are compared.

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Wang, Sen, Yingtian Zhang, Zhiyong Gan, Liansheng Zhou, Qingbo Hu, Guilin Wang, Yigang Zhou und Changzhi Zhang. „Application and Benefit Calculation of Waste Heat Recovery of Power Plant Boiler“. IOP Conference Series: Materials Science and Engineering 677 (10.12.2019): 032007. http://dx.doi.org/10.1088/1757-899x/677/3/032007.

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Shehadeh, Maha, Emily Kwok, Jason Owen und Majid Bahrami. „Integrating Mobile Thermal Energy Storage (M-TES) in the City of Surrey’s District Energy Network: A Techno-Economic Analysis“. Applied Sciences 11, Nr. 3 (30.01.2021): 1279. http://dx.doi.org/10.3390/app11031279.

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The City of Surrey in British Columbia, Canada has recently launched a district energy network (DEN) to supply residential and commercial buildings in the Surrey Centre area with hot water for space and domestic hot water heating. The network runs on natural gas boilers and geothermal exchange. However, the City plans to transition to low-carbon energy sources and envisions the DEN as a key development in reaching its greenhouse gas emissions (GHG) reduction targets in the building sector. Harvesting and utilizing waste heat from industrial sites using a mobile thermal energy storage (M-TES) is one of the attractive alternative energy sources that Surrey is considering. In this study, a techno-economic analysis (TEA) was conducted to determine the energy storage density (ESD) of the proposed M-TES technology, costs, and the emission reduction potential of integrating waste heat into Surrey’s DEN. Three transportation methods were considered to determine the most cost-effective and low-carbon option(s) to transfer heat from industrial waste heat locations at various distances (15 km, 30 km, 45 km) to district energy networks, including: (i) a diesel truck; (ii) a renewable natural gas-powered (RNG) truck, and (iii) an electric truck. To evaluate the effectiveness of M-TES, the cost of emission reduction ($/tCO2e avoided) is compared with business as usual (BAU), which is using a natural gas boiler only. Another comparison was made with other low carbon energy sources that the city is considering, such as RNG/biomass boiler, sewer heat recovery, electric boiler, and solar thermal. The minimum system-level ESD required to makes M-TES competitive when compared to other low carbon energy sources was 0.4 MJ/kg.

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O’Rielly, Kristine, und Jack Jeswiet. „IMPROVING INDUSTRIAL ENERGY EFFICIENCY THROUGH THE IMPLEMENTATION OF WASTE HEAT RECOVERY SYSTEMS“. Transactions of the Canadian Society for Mechanical Engineering 39, Nr. 1 (März 2015): 125–36. http://dx.doi.org/10.1139/tcsme-2015-0010.

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Improving the energy efficiency of industrial processes and the facilities in which they are carried out is often considered to be one of the most promising ways to begin reducing global greenhouse gas emissions. One of the best ways for organizations to reduce their energy consumption without having to carry out extensive equipment and facility overhauls is waste heat recovery or energy recycling. Waste heat recovery involves tapping into previously discarded thermal energy streams and reusing it for various purposes within a facility (space heating or cooling) or within the process itself (pre-heating air and boiler makeup water). Despite the numerous social and economic benefits that are available through waste heat recovery, several economic and technical barriers still exist to its wide-scale implementation. This paper provides an overview of the current state of waste heat recovery systems available in industry, offers a discussion of the major barriers to their wide-spread implementation, and lastly concludes with new data with several new case studies from Canadian manufacturers which have successfully harnessed waste heat within their facilities.

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Ezhov, V. S., N. E. Semicheva, A. P. Burtsev, V. I. Zenchenkov und D. A. Ermakov. „Study of the Process of Generation of Thermoelectricity in Low Grade Heat Recovery of Waste Gases“. Proceedings of the Southwest State University 23, Nr. 2 (09.07.2019): 74–84. http://dx.doi.org/10.21869/2223-1560-2019-23-2-74-84.

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Purpose of research. The purpose of the study is to develop an experimental design of an integrated air heater, conduct and analyze experiments as well as to determine the main characteristics of a thermoelectric generator in low-grade heat recovery of waste gases.Methods. The experimental unit consists of two blocks – a thermoelectric generator operating on the principle of cross heat exchange for heat recovery with concurrent heating of the incoming air, which is supplied as a mixture to the burner device of the boiler unit; and an adsorber block filled with blast furnace slag for cleaning the waste gases from nitrogen, sulphur and carbon oxides. To achieve these goals, the work is based on the proposed thermoelectricity effect, which works on the principle of converting thermal energy into electricity at a temperature difference between hot and cold junctions in thermoelectric sections consisting of two metals different in their electronegativity. At the same time, in an integrated air heater, the intensification of the process of adsorption of harmful components by granulated blast furnace slag takes place, which reduces the heat content and temperature of waste gases, reduces emissions of flue gases and, as a result, increases environmental safety of the area adjacent to the boiler. In particular, the study of countercurrent heat exchange in the design of the thermoelectric generator was carried out.Results. The main result of the research work is the development of an experimental design of an integrated air heater, an experimental technique and the determination of the main characteristics of the thermoelectricity generation process.Conclusion. The use of such an integrated air heater can improve the efficiency of heat-generating units of low, medium and high power installed in the central heating stations, multi-family and single-family houses. The gained electric power with the subsequent transformation can be used for power supply of automatiс equipment of boilers of low, medium and high power, and for power supply of the stations of cathodic protection against electrochemical corrosion of back-end surfaces formed as a result of the presence of water vapors in waste gases.

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Xiao, Zeng Hong, und Xing Lu Hua. „A Study on the Application of Abandoned Wind Electricity in Thermal Power Plant’s Heat Recovery System“. Advanced Materials Research 1070-1072 (Dezember 2014): 343–46. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.343.

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As wind power integration is scaled up year by year, the problem of abandoned wind electricity has become increasingly severe, and thus caused serious waste of energy. To solve the problem of abandoned wind electricity, this paper tries to heat power plant’s back water in electric boiler to absorb abandoned wind electricity. Taking a thermal power plant for example, the application of electric boiler in backwater system can bring great economic benefits and environmental benefits, and provide a reasonable way and solution for the use of abandoned wind electricity.

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Stoppato, Anna, und Alberto Benato. „Life Cycle Assessment of a Commercially Available Organic Rankine Cycle Unit Coupled with a Biomass Boiler“. Energies 13, Nr. 7 (10.04.2020): 1835. http://dx.doi.org/10.3390/en13071835.

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Organic Rankine Cycle (ORC) turbogenerators are a well-established technology to recover from medium to ultra-low grade heat and generate electricity, or heat and work as cogenerative units. High firmness, good reliability and acceptable efficiency guarantee to ORCs a large range of applications: from waste heat recovery of industrial processes to the enhancement of heat generated by renewable resources like biomass, solar or geothermal. ORC unit coupled with biomass boiler is one of the most adopted arrangements. However, despite biomass renewability, it is mandatory to evaluate the environmental impact of systems composed by boilers and ORCs taking into account the entire life cycle. To this purpose, the authors perform a life cycle assessment of a commercially available 150 kW cogenerative ORC unit coupled with a biomass boiler to assess the global environmental performance. The system is modelled in SimaPro using different approaches. Results show that the most impacting processes in terms of CO2 equivalent emissions are the ones related to biomass production and organic fluid leakages with 71% and 19% of the total. Therefore, being fluid release in the environment high impacting, a comparison among three fluids is also performed. Analysis shows that adopting a hydrofluoroolefin fluid with a low global warming potential instead of the hydrocarbon fluid as already used in the cycle guarantees a significant improvement of the environmental performance.

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Arun, A. „Design and Fabrication of Waste Heat Recovery from Boiler Outlet through Peltier Element“. International Journal for Research in Applied Science and Engineering Technology 7, Nr. 4 (30.04.2019): 827–30. http://dx.doi.org/10.22214/ijraset.2019.4148.

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32

HAN, Kyu-il, und Dong-Hyun CHO. „A study on the steam boiler with high compression waste heat recovery system“. Journal of the Korean Society of Fisheries Technology 53, Nr. 3 (30.09.2017): 302–7. http://dx.doi.org/10.3796/ksft.2017.53.3.302.

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33

Thapa, Suvhashis, Eric Borquist, Ashok Baniya und Leland Weiss. „Experimental and computational investigation of a MEMS-based boiler for waste heat recovery“. Energy Conversion and Management 100 (August 2015): 403–13. http://dx.doi.org/10.1016/j.enconman.2015.04.061.

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Xu, Changchun, Min Xu, Ming Zhao, Junyu Liang, Juncong Sai, Yalin Qiu und Wenguo Xiang. „Performance improvement of a 330MWe power plant by flue gas heat recovery system“. Thermal Science 20, Nr. 1 (2016): 303–14. http://dx.doi.org/10.2298/tsci140104099x.

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In a utility boiler, the most heat loss is from the exhaust flue gas. In order to reduce the exhaust flue gas temperature and further boost the plant efficiency, an improved indirect flue gas heat recovery system and an additional economizer system are proposed. The waste heat of flue gas is used for high-pressure condensate regeneration heating. This reduces high pressure steam extraction from steam turbine and more power is generated. The waste heat recovery of flue gas decreases coal consumption. Other approaches for heat recovery of flue gas, direct utilization of flue gas energy and indirect flue gas heat recovery system, are also considered in this work. The proposed systems coupled with a reference 330MWe power plant are simulated using equivalent enthalpy drop method. The results show that the additional economizer scheme has the best performance. When the exhaust flue gas temperature decreases from 153? to 123?, power output increases by 6.37MWe and increment in plant efficiency is about 1.89%. For the improved indirect flue gas heat recovery system, power output increases by 5.68MWe and the increment in plant efficiency is 1.69%.

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Novichkov, Sergei. „Efficiency of waste heat recovery from exhaust recovery boiler gas at a binary cycle & cogeneration plant“. Energy Safety and Energy Economy 1 (Februar 2020): 29–35. http://dx.doi.org/10.18635/2071-2219-2020-1-29-35.

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Abdu, Salman, Song Zhou und Malachy Orji. „Selection of a Waste Heat Recovery System for a Marine Diesel Engine Based on Exergy Analysis“. International Journal of Engineering Research in Africa 25 (August 2016): 36–51. http://dx.doi.org/10.4028/www.scientific.net/jera.25.36.

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Highly increased fuel prices and the need for greenhouse emissions reduction from diesel engines used in marine engines in compliance with International Maritime Organization (IMO) on the strict regulations and guidelines for the Energy Efficiency Design Index (EEDI) make diesel engine exhaust gas heat recovery technologies attractive. The recovery and utilization of waste heat not only conserves fuel, but also reduces the amount of waste heat and greenhouse gases dumped to the environment .The present paper deals with the use of exergy as an efficient tool to measure the quantity and quality of energy extracted from waste heat exhaust gases in a marine diesel engine. This analysis is utilized to identify the sources of losses in useful energy within the components of the system for three different configurations of waste heat recovery system considered. The second law efficiency and the exergy destroyed of the components are investigated to show the performance of the system in order to select the most efficient waste heat recovery system. The effects of ambient temperature are also investigated in order to see how the system performance changes with the change of ambient temperature. The results of the analysis show that in all of the three different cases the boiler is the main source of exergy destruction and the site of dominant irreversibility in the whole system it accounts alone for (31-52%) of losses in the system followed by steam turbine and gas turbine each accounting for 13.5-27.5% and 5.5-15% respectively. Case 1 waste heat recovery system has the highest exergetic efficiency and case 3 has the least exergetic efficiency.

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Kim, Young-Jin, Chung Woo Jung, Yoon Jung Lee, Sung Soo Kim und Yong Tae Kang. „Performance Improvement of Cured-In-Place-Pipe(CIPP) Process by Boiler Waste Heat Recovery“. Korean Journal of Air-Conditioning and Refrigeration Engineering 25, Nr. 3 (10.03.2013): 164–67. http://dx.doi.org/10.6110/kjacr.2013.25.3.164.

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Men, Yiyu, Xiaohua Liu und Tao Zhang. „A review of boiler waste heat recovery technologies in the medium-low temperature range“. Energy 237 (Dezember 2021): 121560. http://dx.doi.org/10.1016/j.energy.2021.121560.

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Ishida, Masayumi. „High Efficient Fluoropolymer Heat Exchenger Enables Low Temperature Waste Heat Recovery of Boiler under 200^|^deg;C“. JAPAN TAPPI JOURNAL 68, Nr. 7 (2014): 757–64. http://dx.doi.org/10.2524/jtappij.68.757.

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Cerri, G., und G. Arsuffi. „Steam-Injected Gas Turbine Integrated With a Self-Production Demineralized Water Thermal Plant“. Journal of Engineering for Gas Turbines and Power 110, Nr. 1 (01.01.1988): 8–16. http://dx.doi.org/10.1115/1.3240092.

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A simple steam-injected gas turbine cycle equipped with an exhaust heat recovery section is analyzed. The heat recovery section consists of a waste heat boiler, which produces the steam to be injected into the combustion chamber, and a self-production demineralized water plant based on a distillation process. This plant supplies the pure water needed in the mixed steam-gas cycle. Desalination plant requirements are investigated and heat consumption for producing distilled water is given. Overall steam-gas turbine cycle performance and feasibility of desalting plants are investigated in a firing temperature range from 1000.°C to 1400.°C for various compressor pressure and steam-to-air injection ratios. An example is reported.

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Valentin, A. C. „Industrial water reuse opportunities and high temperature compatible membranes“. Water Supply 10, Nr. 1 (01.03.2010): 113–20. http://dx.doi.org/10.2166/ws.2010.083.

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Process condensates represent a real value to the industry as it usually contains several items of potential savings, including but not limited to heat energy and water. In most cases the condensate has become contaminated with unwanted particles or with product carryover making it unfit for direct reuse in the process or as boiler makeup water. Conventional methods use heat exchangers for partial recovery of the heat content to be followed by ion exchange or reverse osmosis limited to 30–40°C feed temperature. By using the Duratherm® High Temperature compatible membranes in RO and NF, it is now possible to process the condensate at temperatures up to 80°C thereby maintaining the calorific value of the stream. Many plants also produce a product using evaporation. The overheads from the evaporators usually contain a small amount of their product that must either be recovered by an additional evaporation step or disposed of in a waste treatment plant. These reverse osmosis or nanofiltration systems allow concentration of the product, produce high quality water suitable for reuse, and reduce the load on the waste treatment plant. The treated condensate can then be used for various utility operations including boiler & process makeup.

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Paz, Concepción, Eduardo Suárez, Miguel Concheiro und Antonio Diaz. „Development of a Pattern Recognition Methodology with Thermography and Implementation in an Experimental Study of a Boiler for a WHRS-ORC“. Sensors 19, Nr. 7 (09.04.2019): 1680. http://dx.doi.org/10.3390/s19071680.

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Waste heat dissipated in the exhaust system in a combustion engine represents a major source of energy to be recovered and converted into useful work. A waste heat recovery system (WHRS) based on an Organic Rankine Cycle (ORC) is a promising approach, and it gained interest in the last few years in an automotive industry interested in reducing fuel consumption and exhaust emissions. Understanding the thermodynamic response of the boiler employed in an ORC plays an important role in steam cycle performance prediction and control system design. The aim of this study is, therefore, to present a methodology to study these devices by means of pattern recognition with infrared thermography. In addition, the experimental test bench and its operating conditions are described. The methodology proposed identifies the wall coordinates, traces the paths, and tracks the wall temperature along them in a way that can be exported for subsequent post-processing and analysis. As for the results, through the wall temperature paths on both sides (exhaust gas and working fluid), it was possible to quantitatively estimate the temperature evolution along the boiler and, in particular, the beginning and end of evaporation.

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Punin, Weera, Somchai Maneewan und Chantana Punlek. „Thermoelectric Generator for the Recovery of Energy from the Low-Grade Heat Sources in Sugar Industry“. International Journal of Power Electronics and Drive Systems (IJPEDS) 9, Nr. 4 (01.12.2018): 1565. http://dx.doi.org/10.11591/ijpeds.v9.i4.pp1565-1572.

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In the current work, a thermoelectric power generation system was designed for an assessment of opportunities in terms of electricity production through the utilization of waste heat from sugarcane industries. In this study, the thermoelectric cooling of TEC1-12708T200 was appropriate for use in electric power generation from low-grade heat sources. The experiments used ten thermoelectric modules and an aluminum water block installed on the exterior surface area of a sugar boiler to achieve the same water flow as a traditional system. The results revealed that the power generation system could generate about 30 W (25.7 V, 1.17 A) at a matched load of approximately 36.8 Ω. The thermoelectric power generation system could convert 12.5% of heat energy into electrical energy. Therefore, the thermoelectric power generation system designed in this study could be an effective alternative for waste heat recovery in sugarcane industries.

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Heo, Hyung-Seok, Suk-Jung Bae, Dong-Hyuk Lee, Heon-Kyun Lee und Tae-Jin Kim. „Design of Rankine Steam Cycle and Performance Evaluation of HT Boiler for Engine Waste Heat Recovery“. Transactions of the Korean Society of Automotive Engineers 20, Nr. 2 (01.03.2012): 21–29. http://dx.doi.org/10.7467/ksae.2012.20.2.021.

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Hua, Junye, Gui Li, Yaping Chen, Xiaobao Zhao und Qihe Li. „Optimization of thermal parameters of boiler in triple-pressure Kalina cycle for waste heat recovery“. Applied Thermal Engineering 91 (Dezember 2015): 1026–31. http://dx.doi.org/10.1016/j.applthermaleng.2015.09.005.

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Zhang, Hao, Yong Dong, Yanhua Lai, Hao Zhang und Xinbo Zhang. „Waste heat recovery from coal-fired boiler flue gas: Performance optimization of a new open absorption heat pump“. Applied Thermal Engineering 183 (Januar 2021): 116111. http://dx.doi.org/10.1016/j.applthermaleng.2020.116111.

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Boccaletti, C., G. Cerri und B. Seyedan. „A Neural Network Simulator of a Gas Turbine With a Waste Heat Recovery Section“. Journal of Engineering for Gas Turbines and Power 123, Nr. 2 (01.01.2001): 371–76. http://dx.doi.org/10.1115/1.1361062.

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The objective of the paper is to assess the feasibility of the neural network (NN) approach in power plant process evaluations. A “feed-forward” technique with a back propagation algorithm was applied to a gas turbine equipped with waste heat boiler and water heater. Data from physical or empirical simulators of plant components were used to train such a NN model. Results obtained using a conventional computing technique are compared with those of the direct method based on a NN approach. The NN simulator was able to perform calculations in a really short computing time with a high degree of accuracy, predicting various steady-state operating conditions on the basis of inputs that can be easily obtained with existing plant instrumentation. The optimization of NN parameters like number of hidden neurons, training sample size, and learning rate is discussed in the paper.

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Leferink, R. G. I., und W. M. M. Huijbregts. „Nitrate stress corrosion cracking in waste heat recovery boilers“. Anti-Corrosion Methods and Materials 49, Nr. 2 (April 2002): 118–26. http://dx.doi.org/10.1108/00035590210419362.

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Fialko, N., A. Stepanova, R. Navrodskaya, S. Shevchuk und G. Sbrodova. „Optimization of operating parameters a heat-recovery exchanger of a boiler plant based on the exergy approach“. Energy and automation, Nr. 2(54) (22.06.2021): 5–16. http://dx.doi.org/10.31548/energiya2021.02.005.

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Abstract. The results of operating parameters optimization of the air-heating heat-recovery exchanger of complex heat recovery system of a gas-fired boiler designed for heating water and blown air are presented. Air heating in this heat-recovery exchanger is realized by deep cooling of the waste exhaust gases, that is, with a change in their moisture content during the heat recovery process. The possibilities of using a complex technique based on the structural-variant method and exergy analysis methods for the optimization of the heat-recovery exchanger are analyzed. The developed structural scheme of the boiler plant with identification of input and output exergy streams for all elements of the installation is presented. The change of exergy losses in this heat-recovery exchanger has a rather strong effect on the change of the whole heat recovery system efficiency is established. Thus, the optimization of heat-recovery exchanger operating parameters of is a necessary condition for increasing the efficiency of heat recovery in general. The choice of multiplicative exergy efficiency criteria used as target functions of operating parameters optimization of the investigated air-heating heat exchanger is substantiated. The obtained dependences of exergy efficiency criteria on the operating parameters of the heat-recovery exchanger, such as the ratio of the Reynolds numbers of exhaust gases and air and the ratio of the initial and final moisture content of exhaust gases, are analyzed. It is established that the minimum values of the efficiency criteria, which corresponds to the maximum exergy efficiency, is observed in the range of values of the ratio of the initial and final moisture content of exhaust gases in the range from 2.4 to 3.0. It is shown that at a value of the specified ratio of 2.7, the exergy efficiency of the investigated heat-recovery exchanger does not depend on the ratio of the Reynolds numbers of exhaust gases and air. It is established that of initial and final moisture content ratio of exhaust gases, equal to 2.7, and the Reynolds numbers ratio of exhaust gases and air, equal to 0.8 and 1.2, depending on the values of initial and final moisture content ratio of exhaust gases, can be taken as the optimal values of the operating parameters. Key words: heat-recovery exchangers, exergy efficiency, complex techniques

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SEREDA, B. P., V. I. SUKHOMLIN, V. I. VOLOKH und D. B. SEREDA. „ANALYSIS OF THE REASONS FOR CRACKING PIPES OF THE BOILER OF THE RECOVERY“. Ukrainian Journal of Civil Engineering and Architecture, Nr. 1 (24.06.2021): 95–101. http://dx.doi.org/10.30838/j.bpsacea.2312.230221.96.723.

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8-381X Abstract. Formulation of the problem. One of the main tasks of production is reliable and trouble-free operation of equipment. In the oxygen-envelope process, when cast iron is purged, a large amount of carbon monoxide CO is emitted in the converter, which has a high temperature of more than 1 700 °С of the outgoing gases. The envelope gases in the waste heat boiler are cooled. Converter gas output is characterized by cyclic unevenness In this case, uneven heating of the walls of the boiler pipes occurs. By circulation pumps, chemically purified water is supplied for forced cooling of the boiler walls. When raising the outgoing gases, the cooling water is converted to pars by its subsequent supply to the consumer. The study is dedicated to solving the scientific and applied problem for the reasons for the formation of defects and the identification of cracks in the pipes of the recovery boiler.The purpose of the work. To investigate the causes of the development of transverse cracks in the pipelines of the recovery boiler by various methods of non-destructive testing, to use the methods of scanning microscopy to analyze the microstructure, mechanical tests, and the magnetic properties of structural carbon steel. Conclusions. One of the main reasons for the appearance of massive cracks in the pipes of cylindrical caissons is thermal fatigue caused by high thermal loads. Transverse cracks have the character of thermal fatigue failure, which is confirmed by changes in the ferrite-pearlite structure of the metal, resulting from uneven local cooling of the walls of the caisson. The reasons for the violation of the water circulation in the boiler are the pressure drop in the boiler and a sharp discharge, the load is the release of water from the boiler.

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