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Добірка наукової літератури з теми "Heat of the cooling system"

Автор: Grafiati

Опубліковано: 30 травня 2022

Оновлено: 31 травня 2022

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Статті в журналах з теми "Heat of the cooling system"

Fedorovskiy, Konstantin Yu, and Nadezhda K. Fedorovskaya. "TEMPERATURES OPTIMIZATION OF TWO-CIRCUIT CLOSED COOLING SYSTEM OF SHIP'S POWER PLANT." Russian Journal of Water Transport, no. 62 (March 10, 2020): 175–83. http://dx.doi.org/10.37890/jwt.vi62.48.

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The issues of creating environmentally friendly highly reliable closed-loop cooling systems are considered in the paper. The achievement of these qualities is ensured by the rejection of cooling water intake. The analysis of various coolants of the power installation requiring cooling is carried out. It is shown that for the cooling of a number of coolants it is advisable to create double-circuit cooling systems. This requires the introduction of an additional heat exchanger and the separation of the temperature head between the cooled coolant and seawater. The authors suggest an approach that makes it possible to distribute this temperature head between the circuits optimally. This procedure involves comparing various heat exchangers based on their reduced area. A nomogram is presented to determine the optimal value of the temperature head.

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Balitskii, Alexander, Myroslav Kindrachuk, Dmytro Volchenko, Karol F. Abramek, Olexiy Balitskii, Vasyl Skrypnyk, Dmytro Zhuravlev, Iryna Bekish, Mykola Ostashuk, and Valerii Kolesnikov. "Hydrogen Containing Nanofluids in the Spark Engine’s Cylinder Head Cooling System." Energies 15, no. 1 (December 22, 2021): 59. http://dx.doi.org/10.3390/en15010059.

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The article is devoted to the following issues: boiling of fluid in the cooling jacket of the engine cylinder head; agents that influenced the thermal conductivity coefficient of nanofluids; behavior of nanoparticles and devices with nanoparticles in the engine’s cylinder head cooling system. The permissible temperature level of internal combustion engines is ensured by intensification of heat transfer in cooling systems due to the change of coolants with “light” and “heavy” nanoparticles. It was established that the introduction of “light” nanoparticles of aluminum oxide Al2O3 Al2O3 into the water in a mass concentration of 0.75% led to an increase in its thermal conductivity coefficient by 60% compared to the base fluid at a coolant temperature of 90 °C, which corresponds to the operating temperature of the engine cooling systems. At the indicated temperature, the base fluid has a thermal conductivity coefficient of 0.545 Wm2×°C W/(m °C), for nanofluid with Al2O3 particles its value was 0.872 Wm2×°C. At the same time, a positive change in the parameters of the nanofluid in the engine cooling system was noted: the average movement speed increased from 0.2 to 2.0 m/s; the average temperature is in the range of 60–90 °C; heat flux density 2 × 102–2 × 106 Wm2; heat transfer coefficient 150–1000 Wm2×°C. Growth of the thermal conductivity coefficient of the cooling nanofluid was achieved. This increase is determined by the change in the mass concentration of aluminum oxide nanoparticles in the base fluid. This will make it possible to create coolants with such thermophysical characteristics that are required to ensure intensive heat transfer in cooling systems of engines with various capacities.

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Singh, Randeep, Masataka Mochizuki, Thang Nguyen, Tien Nguyen, Koichi Mashiko, and Kazuhiko Goto. "H212 Heat Pipe Based Emergency Core Cooling System for Nuclear Reactor." Proceedings of the Thermal Engineering Conference 2011 (2011): 363–64. http://dx.doi.org/10.1299/jsmeted.2011.363.

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Wang, Yu, and Lin Ruan. "Self-Circulating Evaporative Cooling System of a Rotor and Its Experimental Verification." Processes 10, no. 5 (May 9, 2022): 934. http://dx.doi.org/10.3390/pr10050934.

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With the development of hydropower, the heat problem of a rotor cannot be ignored. This paper presents a topology of an evaporative cooling system for rotors. The system seals the pole coil in a tank and immerses the coil in the insulating coolant with a suitable boiling point. The latent heat of vaporization during the boiling of coolant is used to control the temperature rise of the pole coil. After explaining the circulation principle of the system, the effectiveness of the cooling system is verified by experiments. A small-scale experimental platform has been set up to test the effectiveness of the new topology. The comparison experiment with air-cooling shows that the phase change cooling system can not only provide hundreds of times the heat transfer capacity of air-cooling, but also the temperature rise of the coil is half that of air cooling. Based on the experimental results, the calculated formula of the heat transfer coefficient of the evaporative cooling system in the rotating state was fitted, and the deviation of the calculated result could be kept at less than 25%. Thanks to the evaporative cooling system, the rotor carries a high current density.

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Li, Qi Fen, Tao Li, Cui Cui Pan, Zhi Tian Zhou, and Wei Dong Sun. "Design and Calculation of Cooling System to Eliminate Non-Uniform Heat Transfer on Concentration PV System (CPV)." Advanced Materials Research 608-609 (December 2012): 143–50. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.143.

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With characteristics of rapid start-up, small heat resistance，uniform temperature and strong heat transfer ability, heat pipe has been used as a facility in cooling system of concentration photovoltaic system. Through numerical calculation and analysis, heat transfer characteristics of the cooling systems are carried out in this paper. Focusing on research of conventional rectangular fin and small fin fixed on cooling systems, and the heat pipe radiator that may adopted, the high-efficiency cooling system and method which are matched with the requirement of high energy flow density and notuniformity temperature are discussed. Finally, optimization design of the cooling system structure is suggested in the paper.

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Grigoryan, Artak A., Karapet A. Ter-Zakaryan, Alexander I. Panchenko, Nadezhda A. Galceva, and Vladislav I. Krashchenko. "Heat- and cooling systems." Stroitel stvo nauka i obrazovanie [Construction Science and Education], no. 4 (December 31, 2019): 7. http://dx.doi.org/10.22227/2305-5502.2019.4.7.

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Introduction. The article discusses the various aspects of the use of foamed polyethylene, implemented at sports facilities in Armenia. Firstly, it is a roof insulation system. Secondly, the implementation of insulation systems to preserve the cold in the territory of open sports facilities, in particular, to preserve snow reserves in ski resorts. Additional requirements are imposed on the thermal insulation material for such structures. The material, in addition to high thermotechnical properties, must be airtight, lightweight, easy to install and maintain, durable, resistant to infection by bacteria and fungi, it is easy to tolerate temperature extremes. Materials and methods. The article presents the results of a study of the properties (heat conductivity density, vapor permeability, water absorption) and application features (resistance to the effects of temperature, humidity, aggressive components contained in the air, that is, its high operational stability) of rolled non-cross-linked polyethylene foam when creating insulating sheets that protect snow from melting. Results. It was found that polyethylene foam in the insulating system maintains the stability of mechanical and thermophysical properties. Taking into account all the functional features of the implementation of insulation systems, the principles of protection and preservation (conservation) of snow cover have been developed, implemented on the mountain slopes and plateau of ski facilities. Rolls of foamed polyethylene were joined end-to-end and mechanically fixed. Conclusions. Thus, a seamless insulating coating was formed, covering the entire hillside — “thermal blanket”. The insulation system is operated during the off-season between March and September, during a period of stable positive temperatures.

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Xu, Shanglong, Weijie Wang, Zongkun Guo, Xinglong Hu, and Wei Guo. "A multi-channel cooling system for multiple heat source." Thermal Science 20, no. 6 (2016): 1991–2000. http://dx.doi.org/10.2298/tsci140313123x.

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High-power electronic devices with multiple heating elements often require temperature uniformity and operating within their functional temperature range for optimal performance. A multi-channel cooling experiment apparatus is developed for studying heat removal inside an electronic device with multiple heat sources. It mainly consists of a computer-controlled pump, a multi-channel heat sink for multi-zone cooling and the apparatus for measuring the temperature and pressure drop. The experimental results show the system and the designed multi-channel heat sink structure can control temperature distribution of electronic device with multiple heat sources by altering coolant flow rate.

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Song, Yufei, Zhiguo Liu, Shiwu Li, and Qingyong Jin. "Design and Optimization of an Immersion Liquid Cooling System in Internet Datacenter." International Journal of Heat and Technology 39, no. 6 (December 31, 2021): 1923–29. http://dx.doi.org/10.18280/ijht.390629.

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With the development of high-performance chips, the heat flux of Internet datacenter (IDC) is on the rise, and heat dissipation becomes a major bottleneck of IDC development. The cooling needs of the IDC room can hardly be met by the traditional method of air cooling. In recent years, immersion liquid cooling has attracted a growing attention, due to its excellent performance. This paper designs and optimizes an immersion liquid cooling system for IDC. Multiple numerical simulations were carried out to analyze the influence of the system parameters on heat dissipation, and improve the system efficiency using a dielectric coolant. Specifically, 20 graphics processing units (GPUs) and 2 central processing units (CPUs) were set up in each machine of the liquid cooling server. Then, the GPU and CPU temperature was examined under different opening positions on the server top plate, inlet coolant temperatures, and coolant flow speeds. The results show that a 30mm-wide, 430mm-long opening should be set at the upper part of the GPU array, 20mm away from the top plate. The cooling effect can be optimized at the inlet temperature of 30℃, and the coolant flow speed of 3m3/h.

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Kulkarni, Shubham S. "A Glance on Radiant Cooling Technology for Heating and Cooling for Residential and Commercial Building Application." Journal of Advanced Research in Applied Mechanics and Computational Fluid Dynamics 07, no. 3&4 (November 6, 2020): 13–19. http://dx.doi.org/10.24321/2349.7661.202005.

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As we know that nowadays due to the hot and humid weather and the increasing temperature the high amount of energy consumption is used for the heating & cooling purpose in residential as well as in commercial building for air conditioning systems. To overcome this problem and to reduce the energy consumption as well as good thermal comfort to people in the indoor environment, use the radiant heating & cooling system is a better way. This concept is used to cool or heat the room and absorbs the indoor sensible heat by thermal radiation. The system removes heat by using less energy and more energy-efficient. This system uses water as a medium to cool or heat the room space. There are three types discussed in these papers for cooling & heating. In this paper, we did an overall study regarding radiant heating and cooling systems. It reduces the energy lost due to the duct leakage. It also has a lower life cycle cost compared to conventional. In this paper, we have reviewed how to reduce energy consumption and give thermal comfortable air-condition through radiant cooling and chilled ceiling panel system.

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Zarzycki, Robert. "The use of heat from the CO2 compression system for production of system heat." E3S Web of Conferences 49 (2018): 00135. http://dx.doi.org/10.1051/e3sconf/20184900135.

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The study presents the concept and computations of the CO2 compression for the purposes of transport and underground storage of the gas. Cooling between individual stages is needed to reduce the power needed for CO2 compression. Heat obtained from the cooling process can be used to provide heat to the municipal heat power systems. A design of a heat accumulator for storage of excess heat was proposed in order to improve heat supply safety. The solution proposed in the study allows for heating condensing power units using waste heat from the CO2 cooling process.

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Дисертації з теми "Heat of the cooling system"

Determan, Matthew Delos. "Thermally activated miniaturized cooling system." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/29618.

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Thesis (Ph.D)--Mechanical Engineering, Georgia Institute of Technology, 2008.
Committee Chair: Garimella, Srinivas; Committee Member: Allen, Mark; Committee Member: Fuller, Tom; Committee Member: Jeter, Sheldon; Committee Member: Wepfer, William. Part of the SMARTech Electronic Thesis and Dissertation Collection.

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Liu, Shuli. "A novel heat recovery/desiccant cooling system." Thesis, University of Nottingham, 2008. http://eprints.nottingham.ac.uk/11602/.

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The global air temperature has increased by 0.74± 0.18 °C since 1905 and scientists have shown that CO2 accounts for 55 percentages of the greenhouse gases. Global atmospheric CO2 has been sharply increased since 1751, however the trend has slowed down in last fifty years in the Western Europe. UK and EU countries have singed the Kyoto agreement to reduce their greenhouse gas emissions by a collective average of 12.5% below their 1990 levels by 2020. In the EU, 40% of CO2 emission comes from the residential energy consumption, in which the HVAC system accounts for 50%, lighting accounts for 15% and appliances 10%. Hence, reducing the fossil-fuel consumption in residential energy by utilizing renewable energy is an effective method to achieve the Kyoto target. However, in the UK renewable energy only accounts for 2% of the total energy consumption in 2005. A novel heat recovery/desiccant cooling system is driven by the solar collector and cooling tower to achieve low energy cooling with low CO2 emission. This system is novel in the following ways: • Uses cheap fibre materials as the air-to-air heat exchanger, dehumidifier and regenerator core • Heat/mass fibre exchanger saves both sensible and latent heat from the exhaust air • The dehumidifier core with hexagonal surface could be integrated with windcowls/catchers draught • Utilises low electrical energy and therefore low CO2 is released to the environment The cooling system consists of three main parts: heat/mass transfer exchanger, desiccant dehumidifier and regenerator. The fibre exchanger, dehumidifier and regenerator cores are the key parts of the technology. Owing to its proper pore size and porosity, fibre is selected out as the exchanger membrane to execute the heat/mass transfer process. Although the fibre is soft and difficult to keep the shape for long term running, its low price makes its frequent replacement feasible, which can counteract its disadvantages. A counter-flow air-to-air heat /mass exchanger was investigated and simulation and experimental results indicated that the fibre membranes soaked by desiccant solution showed the best heat and mass recovery effectiveness at about 89.59% and 78.09%, respectively. LiCl solution was selected as the working fluid in the dehumidifier and regenerator due to its advisable absorption capacity and low regeneration temperature. Numerical simulations and experimental testing were carried out to work out the optimal dehumidifier/regenerator structure, size and running conditions. Furthermore, the simulation results proved that the cooling tower was capable to service the required low temperature cooling water and the solar collector had the ability to offer the heating energy no lower than the regeneration temperature 60℃. The coefficient-of-performance of this novel heat recovery/desiccant cooling system is proved to be as high as 13.0, with a cooling capacity of 5.6kW when the system is powered by renewable energy. This case is under the pre-set conditions that the environment air temperature is 36℃ and relative humidity is 50% (cities such as Hong Kong, Taiwan, Spain and Thailand, etc). Hence, this system is very useful for a hot/humid climate with plenty of solar energy. The theoretical modelling consisted of four numerical models is proved by experiments to predict the performance of the system within acceptable errors. Economic analysis based on a case (200m2 working office in London) indicated that the novel heat recovery/desiccant cooling system could save 5134kWh energy as well as prevent 3123kg CO2 emission per year compared to the traditional HVAC system. Due to the flexible nature of the fibre, the capital and maintenance cost of the novel cooling system is higher than the traditional HVAC system, but its running cost are much lower than the latter. Hence, the novel heat recovery/desiccant cooling system is cost effective and environment friendly technology.

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Son, Changmin. "Gas turbine impingement cooling system studies." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.670200.

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Lister, Vincent Yves. "Particulate fouling in an industrial cooling system." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708736.

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Miller, Mark W. "Heat transfer in a coupled impingement-effusion cooling system." Master's thesis, University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/4807.

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The efficiency of air-breathing gas turbine engines improves as the combustion temperature increases. Therefore, modern gas turbines operate at temperatures greater than the melting temperature of hot-gas-path components, and cooling must be introduced in order to maintain mechanical integrity of those components. Two highly effective techniques used in modern designs for this purpose are impingement cooling and use of coolant film on hot-gas-path surface introduced through discrete film or effusion holes. In this study, these two mechanisms are coupled into a single prototype cooling system. The heat transfer capability of this system is experimentally determined for a variety of different geometries and coolant flow rates. This study utilizes Temperature Sensitive Paint (TSP) in order to measure temperature distribution over a surface, which allowed for local impingement Nusselt number, film cooling effectiveness, and film cooling heat transfer enhancement profiles to be obtained. In addition to providing quantitative heat transfer data, this method allowed for qualitative investigation of the flow behavior near the test surface. Impinging jet-to-target-plate spacing was varied over a large range, including several tall impingement scenarios outside the published limits. Additionally, both in-line and staggered effusion arrangements were studied, and results for normal injection were compared to full coverage film cooling with inclined- and compound-angle injection. Effects of impingement and effusion cooling were combined to determine the overall cooling effectiveness of the system. It is shown that low impingement heights produce the highest Nusselt number, and that large jet-to-jet spacing reduces coolant flow rate while maintaining moderate to high heat transfer rates. Staggered effusion configurations exhibit superior performance to in-line configurations, as jet interference is reduced and surface area coverage is improved. Coolant to mainstream flow mass flux ratios greater than unity result in jet blow-off and reduced effectiveness. The convective heat transfer coefficient on the film cooled surface is higher than a similar surface without coolant injection due to the generation of turbulence associated with jet-cross flow interaction.
ID: 030646180; System requirements: World Wide Web browser and PDF reader.; Mode of access: World Wide Web.; .; Thesis (M.S.M.E.)--University of Central Florida, 2011.; Includes bibliographical references (p. 171-176).
M.S.M.E.
Masters
Mechanical and Aerospace Engineering
Engineering and Computer Science
Mechanical Engineering; Thermo-Fluids Track

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Glover, Garrett A. "The Next Generation Router System Cooling Design." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/191.

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Advancements in the networking and routing industry have created higher power electronic systems which dissipate large amounts of heat while cooling technology for these electronic systems has remained relatively unchanged. This report illustrates the development and testing of a hybrid liquid-air cooling system prototype implemented on Cisco’s 7609s router. Water was the working fluid through cold plates removing heat from line card components. The water was cooled by a compact liquid-air heat exchanger and circulated by two pumps. The testing results show that junction temperatures were maintained well below the 105°C limit for ambient conditions around 30°C at sea level. The estimated junction temperatures for Cisco’s standard ambient conditions of 50°C at 6,000 feet and 40°C at 10,000 feet were 104°C and 96°C respectively. Adjustments to the test data for Cisco’s two standard ambient conditions with expected device characteristics suggested the hybrid liquid-air cooling design could meet the projected heat load.

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Mertzios, Christos. "A solar driven cooling system using innovative ground heat exchangers." Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.434089.

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Kiflemariam, Robel. "Heat-Driven Self-Cooling System Based On Thermoelectric Generation Effect." FIU Digital Commons, 2015. http://digitalcommons.fiu.edu/etd/2281.

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This research entails the first comprehensive and systematic study on a heat-driven, self-cooling application based on the thermoelectric generation effect. The system was studied using the first and second laws of thermodynamics to provide a solid and basic understanding of the physical principles governing the system. Multiphysics equations that relate heat transfer, fluid dynamics and thermoelectric generation are derived. The equations are developed with increasing complexity, from the basic Carnot heat engine to externally and internally irreversible engines. A computational algorithm to systematically use the fundamental equations has been presented and computer code is implemented based on the algorithm. Experiments were conducted to analyze the geometric and system parameters affecting the application of thermoelectric based self-cooling in devices. Experimental results show that for the highest heat input studied, the temperature of the device has been reduced by 20-40% as compared to the natural convection case. In addition, it has been found that in the self-cooling cases studied, convection thermal resistance could account for up to 60% of the total thermal resistance. A general numerical methodology was developed to predict steady as well as transient thermal and electrical behavior of a thermoelectric generation-based self-cooling system. The methodology is implemented by using equation modeling capabilities to capture the thermo-electric coupled interaction in TEG elements, enabling the simulation of major heating effects as well as temperature and spatial dependent properties. An alternative methodology was also presented, which integrates specialized ANSI-C code to integrate thermoelectric effects, temperature-dependent properties and transient boundary conditions. It has been shown that the computational model is able to predict the experimental data with good accuracy (within 5% error). A parametric study has been done using the model to study the effect of heat sink geometry on device temperature and power produced by TEG arrays. In addition, a dynamic model suited for integration in control systems is developed. Therefore, the study has shown the potential for a heat driven self-cooling system and provides a comprehensive set of tools for analysis and design of thermoelectric generation.

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Nordlander, Erik. "Modelling and Validation of a Truck Cooling System." Thesis, Linköping University, Department of Electrical Engineering, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-12220.

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In the future, new challenges will occur during the product development in the vehicular industry when emission legislations getting tighter. This will also affect the truck cooling system and therefore increase needs for analysing the system at different levels of the product development. Volvo 3P wishes for these reasons to examine the possibility to use AMESim as a future 1D analysis tool. This tool can be used as a complement to existing analysis methods at Volvo 3P. It should be possible to simulate pressure, flow and heat transfer both steady state and transient.

In this thesis work a cooling system of a FH31 MD13 520hp truck with an engine driven coolant pump is studied. Further a model of the cooling system is built in AMESim together with necessary auxiliary system such as oil circuits. The model is validated using experimental data that have been produced by Volvo 3P at the Gothenburg facility.

The results from validation and other simulations show that the model gives a good picture of the cooling system. It also gives information about pressure, flow and heat transfer in steady state conditions. Further a design modification is done, showing how a change affects the flow in the cooling system.

The conclusion is that a truck cooling system can be built and simulated in AMESim. Further, it shows that AMESim meets the requirements Volvo 3P in Gothenburg has set up for the future 1D analysis tool and thereby AMESim is a good complement to the already existing analysis method.

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Chen, Xiangjie. "Investigations of heat powered ejector cooling systems." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/29721/.

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In this thesis, heat powered ejector cooling systems was investigated in two ways: to store the cold energy with energy storage system and to utilize low grade energy to provide both electricity and cooling effect. A basic ejector prototype was constructed and tested in the laboratory. Water was selected as the working fluid due to its suitable physical properties, environmental friendly and economically available features. The computer simulations based on a 1-0 ejector model was carried out to investigate the effects of various working conditions on the ejector performance. The coefficients of performance from experimental results were above 0.25 for generator temperature of lI5°C-130 °C, showing good agreements with theoretical analysis. Experimental investigations on the operating characteristics of PCM cold storage system integrated with ejector cooling system were conducted. The experimental results demonstrated that the PCM cold storage combined with ejector cooling system was practically applicable. The effectiveness-NTU method was applied for characterizing the tube-in-container PCM storage system. The correlation of effectiveness as the function of mass flow rate was derived from experimental data, and was used as a design parameter for the PCM cold storage system. In order to explore the possibility of providing cooling effect and electricity simultaneously, various configurations of combined power and ejector cooling system were studied experimentally and theoretically. The thermal performance of the combined system in the range of 0.15-0.25 and the turbine output between 1200W -1400W were obtained under various heat source temperatures, turbine expansion ratios and condenser temperatures. Such combined system was further simulated with solar energy as driving force under Shanghai climates, achieving a predicted maximum thermal efficiency of 0.2. By using the methods of Life Saving Analysis, the optimized solar collector area was 30m2 and 90m2 respectively for the system without and with power generation. The environmental impacts and the carbon reductions of these two systems were discussed.

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Книги з теми "Heat of the cooling system"

Herro, Harvey M. The Nalco guide to cooling water system failure analysis. New York: McGraw-Hill, 1993.

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Ontario. Ministry of Agriculture and Food. Heat Recovery From Milk Cooling Systems. S.l: s.n, 1988.

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D, Port Robert, and Nalco Chemical Company, eds. The Nalco guide to cooling water system failure analysis: Nalco Chemical Company. New York: McGraw-Hill, 1993.

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Abdul-Aziz, Ali. Effects of cooling system parameters on heat transfer in PAFC stack. [Washington, DC: National Aeronautics and Space Administration, 1985.

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C, Howard Brian, ed. Geothermal HVAC: Green heating and cooling. New York: McGraw-Hill, 2011.

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An introduction to thermogeology: Ground source heating and cooling. 2nd ed. Hoboken, NJ: John Wiley & Sons, Ltd., 2012.

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An introduction to thermogeology: Ground source heating and cooling. Oxford: Blackwell Pub., 2008.

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Lomax, Curtis. A direct-interface, fusible heat sink for astronaut cooling. Moffett Field, Calif: National Aeronautics and Space Administration, Ames Research Center, 1990.

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Stojanowski, John. Residential geothermal systems: Heating and cooling using the ground below. 2nd ed. Staten Island, NY: Pangea Publications, 2011.

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Kveton, O. K. ITER cooling system: Analysis of heat transfer media, operation and safety of cooling loop and blanket during conditioning and baking. Toronto: Ontario Hydro, 1990.

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Частини книг з теми "Heat of the cooling system"

Zohuri, Bahman. "Direct Reactor Auxiliary Cooling System." In Heat Pipe Applications in Fission Driven Nuclear Power Plants, 203–18. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05882-1_7.

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Söylemez, M. S., and M. Ünsal. "Computation of Steady Laminar Natural Convective Heat Transfer from Localized Heat Sources in Enclosures." In Cooling of Electronic Systems, 225–38. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_12.

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Nakayama, Wataru. "Information Processing and Heat Transfer Engineering." In Cooling of Electronic Systems, 911–43. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_35.

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Herzog, Alexander, Carolina Pelka, Rudolf Weiss, and Frank Skorupa. "Determination of the Cooling Medium Composition in an Indirect Cooling System." In Energy and Thermal Management, Air-Conditioning, and Waste Heat Utilization, 80–98. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-030-00819-2_7.

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Bowman, Charles F., and Seth N. Bowman. "Heat Rejection." In Engineering of Power Plant and Industrial Cooling Water Systems, 139–48. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003172437-10.

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Bowman, Charles F., and Seth N. Bowman. "Heat Exchangers." In Engineering of Power Plant and Industrial Cooling Water Systems, 127–38. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003172437-9.

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Herman, Cila. "Experimental Visualization of Temperature Fields and Measurement of Heat Transfer Enhancement in Electronic System Models." In Cooling of Electronic Systems, 313–37. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_16.

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Mobedi, M., H. Yüncü, and B. Yücel. "Natural Convection Heat Transfer from Horizontal Rectangular Fin Arrays." In Cooling of Electronic Systems, 189–202. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_10.

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Krane, Robert J., Iqballudin Ahmed, and J. Roger Parsons. "The Cooling of Electronic Components with Flat Plate Heat Sinks." In Cooling of Electronic Systems, 391–414. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_19.

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Salamatin, A. N., V. A. Chugunov, and O. V. Yartsev. "Effective Heat Transfer Coefficients and Temperature Modelling in Electronic Systems." In Cooling of Electronic Systems, 899–909. Dordrecht: Springer Netherlands, 1994. http://dx.doi.org/10.1007/978-94-011-1090-7_34.

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Тези доповідей конференцій з теми "Heat of the cooling system"

Neto, Luiz Tobaldini, Ramon Papa, and Luis C. de Castro Santos. "Braking System Cooling Time Simulation." In ASME 2003 Heat Transfer Summer Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ht2003-47578.

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Aircraft braking pads are subject to an extremely severe thermal environment. During a typical landing the carbon brake pads can reach temperatures up to 700–800 K or even more. Between landings during the taxi and parking phase the brakes have to cool off back to their operational limits in a time interval consistent with the average operational time. In order to evaluate the impact of design modifications on the wheel mounting and fairings, without the need of extensive laboratory and flight campaigns, a CFD (Computational Fluid Dynamics) based methodology was developed. Due to the geometry complexity the need of a geometrically representative, but simplified model comes up, in order to capture the major features of the natural convection flow and temperature fields and can be used to evaluate the influence of design changes on the braking system cooling times. A calibration procedure is carried out, aiming a better representation of the transient phenomenon, using a thermal resistances setting up feature from the solver used. An example of the application of this methodology is presented. A computational grid of over 700,000 tetrahedral elements was constructed and the Navier-Stokes equations are solved using a commercial package (FLUENT). The computational cost for a time accurate solution demands the use of parallel processing in order to complete the analysis in a typical industrial environment timeframe. Comparison with both laboratory and flight data calibrate and validate the results of the computational model. This paper describes the details of the construction of the CFD model, the setting of the initial and boundary conditions and the comparison between measured and simulated parameters.

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Gentile, Dominique, and S. Zidat. "INFLUENTIAL PARAMETERS IN A BOILING COOLING SYSTEM." In International Heat Transfer Conference 9. Connecticut: Begellhouse, 1990. http://dx.doi.org/10.1615/ihtc9.580.

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ÐšÐ¾, Y. J., D. Charoensupaya, and Z. Lavan. "OPEN-CYCLE DESICCANT COOLING SYSTEM WITH STAGED REGENERATION." In International Heat Transfer Conference 9. Connecticut: Begellhouse, 1990. http://dx.doi.org/10.1615/ihtc9.560.

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Galitseisky, Boris M., A. V. Loburev, and M. S. Cherny. "THE METHOD OPTIMIZATION OF GAS TURBINE BLADES COOLING SYSTEM." In International Heat Transfer Conference 11. Connecticut: Begellhouse, 1998. http://dx.doi.org/10.1615/ihtc11.1270.

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Miller, Mark, Greg Natsui, Mark Ricklick, Jay Kapat, and Reinhard Schilp. "Heat Transfer in a Coupled Impingement-Effusion Cooling System." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-26416.

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Modern research on gas turbine cooling continues to focus on the optimization of different cooling designs, and better understanding of the underlying flow physics so that cooling schemes can be coupled together. The current study focuses on one particular coupled cooling design: an impingement-effusion cooling system, which combines impingement cooling on the backside of the cooled component and full coverage effusion cooling on the exposed surface. The goal of this study is to explore a wide range of geometrical parameters outside the ranges normally reported in the available literature. Particular attention is given to the total coolant spent per unit surface area cooled. Through determination of impingement heat transfer, film cooling effectiveness, and film cooling heat transfer on the target wall, a simplified heat transfer model of the cooled component is developed to show the relative impact of each parameter on the overall cooling effectiveness. The use of Temperature Sensitive Paint (TSP) for data acquisition allows for high resolution local heat transfer and effectiveness results. Impingement arrays with local extraction of coolant via effusion are able to produce higher overall heat transfer, as no significant cross flow is present to deflect the impinging jets. Low jet-to-target-plate spacing produces the highest yet most non-uniform heat transfer distribution; at high spacing the heat transfer rate is much less sensitive to impingement height. Arrays with high hole-to-hole spacing and high jet Reynold’s number are more effective (per mass of coolant used) than tightly spaced holes at low jet Reynold’s number. On the effusion side, staggered hole arrangements provide significantly higher film cooling effectiveness than their in-line counterparts as the staggered arrangement minimizes jet interactions and promotes a more even lateral distribution of coolant.

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Upadhya, Girish, Mark Munch, Peng Zhou, James Hom, Douglas Werner, and Mark McMaster. "Micro-scale liquid cooling system for high heat flux processor cooling applications." In Twenty-Second Annual IEEE Semiconductor Thermal Measurement and Measurement Symposium. IEEE, 2006. http://dx.doi.org/10.1109/stherm.2006.1625215.

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Yokobori, Seiichi, Toshimi Tobimatsu, Tomohisa Kurita, Makoto Akinaga, Kenji Arai, and Hirohide Oikawa. "Heat Removal Mechanism of Passive Containment Cooling System for ALWR." In International Heat Transfer Conference 12. Connecticut: Begellhouse, 2002. http://dx.doi.org/10.1615/ihtc12.4330.

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Han, Hun Sik, Seo Young Kim, Tae Ho Ji, Young-Jun Jee, Daewoong Lee, Kil Sang Jang, and Dong Hoon Oh. "Heat sink design for a thermoelectric cooling system." In 2008 11th Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (ITHERM '08). IEEE, 2008. http://dx.doi.org/10.1109/itherm.2008.4544400.

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Nyers, Jozsef M., and Arpad J. Nyers. "COP of heating-cooling system with heat pump." In 2011 IEEE 3rd International Symposium on Exploitation of Renewable Energy Sources (EXPRES). IEEE, 2011. http://dx.doi.org/10.1109/expres.2011.5741809.

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Mukesh, Patel Sanket, Kathrotia Sugney Sureshbhai, and Patel Suhradam Mukeshbhai. "Integrated Heat Sink and Enhanced PC Cooling." In 2012 International Conference on Computer Science and Service System (CSSS). IEEE, 2012. http://dx.doi.org/10.1109/csss.2012.471.

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Звіти організацій з теми "Heat of the cooling system"

Cadarette, Bruce S., Troy D. Chineverse, Brett R. Ely, Daniel A. Goodman, Brad Laprise, Walter Teal, and Michael N. Sawka. Physiological Responses to Exercise-Heat Stress With Prototype Pulsed Microclimate Cooling System. Fort Belvoir, VA: Defense Technical Information Center, September 2008. http://dx.doi.org/10.21236/ada486404.

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DiBella, F., K. Patch, and F. Becker. Desiccant-based, heat actuated cooling assessment for DHC systems. Office of Scientific and Technical Information (OSTI), October 1989. http://dx.doi.org/10.2172/5685616.

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Chyu, M. K. Use of a laser-induced fluorescence thermal imaging system for film cooling heat transfer measurement. Office of Scientific and Technical Information (OSTI), April 1996. http://dx.doi.org/10.2172/226040.

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Cho, Y. I., E. Choi, and H. G. Lorsch. A novel concept for heat transfer fluids used in district cooling systems. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/6527230.

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Johra, Hicham. Performance overview of caloric heat pumps: magnetocaloric, elastocaloric, electrocaloric and barocaloric systems. Department of the Built Environment, Aalborg University, January 2022. http://dx.doi.org/10.54337/aau467469997.

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Heat pumps are an excellent solution to supply heating and cooling for indoor space conditioning and domestic hot water production. Conventional heat pumps are typically electrically driven and operate with a vapour-compression thermodynamic cycle of refrigerant fluid to transfer heat from a cold source to a warmer sink. This mature technology is cost-effective and achieves appreciable coefficients of performance (COP). The heat pump market demand is driven up by the urge to improve the energy efficiency of building heating systems coupled with the increase of global cooling needs for air-conditioning. Unfortunately, the refrigerants used in current conventional heat pumps can have a large greenhouse or ozone-depletion effect. Alternative gaseous refrigerants have been identified but they present some issues regarding toxicity, flammability, explosivity, low energy efficiency or high cost. However, several non-vapour-compression heat pump technologies have been invented and could be promising alternatives to conventional systems, with potential for higher COP and without the aforementioned refrigerant drawbacks. Among those, the systems based on the so-called “caloric effects” of solid-state refrigerants are gaining large attention. These caloric effects are characterized by a phase transition varying entropy in the material, resulting in a large adiabatic temperature change. This phase transition is induced by a variation of a specific external field applied to the solid refrigerant. Therefore, the magnetocaloric, elastocaloric, electrocaloric and barocaloric effects are adiabatic temperature changes in specific materials when varying the magnetic field, uniaxial mechanical stress, electrical field or hydrostatic pressure, respectively. Heat pump cycle can be built from these caloric effects and several heating/cooling prototypes were developed and tested over the last few decades. Although not a mature technology yet, some of these caloric systems are well suited to become new efficient and sustainable solutions for indoor space conditioning and domestic hot water production. This technical report (and the paper to which this report is supplementary materials) aims to raise awareness in the building community about these innovative caloric systems. It sheds some light on the recent progress in that field and compares the performance of caloric systems with that of conventional vapour-compression heat pumps for building applications.

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Patch, K. D., F. A. DiBella, and F. E. Becker. District Heating and Cooling Technology Development Program: Phase 2, Investigation of reduced-cost heat-actuated desiccant cooling systems for DHC applications. Office of Scientific and Technical Information (OSTI), February 1992. http://dx.doi.org/10.2172/6907693.

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Radermacher, R. Advanced heat pump cycle for district heating and cooling systems. Second quarterly progress report. Office of Scientific and Technical Information (OSTI), October 1991. http://dx.doi.org/10.2172/10116173.

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Payne, W. Vance. Residential Air-Conditioner and Heat Pump System, Cooling Mode, Rule-Based Chart Fault Detection and Diagnosis Software User’s Guide. National Institute of Standards and Technology, December 2020. http://dx.doi.org/10.6028/nist.tn.2130.

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Farmer, M. T., D. J. Kilsdonk, C. P. Tzanos, S. Lomperski, R. W. Aeschlimann, and D. Pointer. Topical report: Natural convection shutdown heat removal test facility (NSTF) evaluation for generating additional reactor cavity cooling system (RCCS) data. Office of Scientific and Technical Information (OSTI), September 2005. http://dx.doi.org/10.2172/925335.

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Bloomquist, R. G., and S. Wegman. Municipal water-based heat pump heating and/or cooling systems: Findings and recommendations. Final report. Office of Scientific and Technical Information (OSTI), April 1998. http://dx.doi.org/10.2172/638193.

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