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Journal articles on the topic 'Heat application'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Dobáková, Romana, Natália Jasminská, Tomáš Brestovič, Mária Čarnogurská, and Marián Lázár. "Dimensional analysis application when calculating heat losses." International Journal of Engineering Research and Science 3, no. 9 (September 30, 2017): 29–34. http://dx.doi.org/10.25125/engineering-journal-ijoer-sep-2017-5.

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2

Winterton, R. H. S. "Nuclear heat application." Annals of Nuclear Energy 12, no. 6 (January 1985): 325. http://dx.doi.org/10.1016/0306-4549(85)90037-4.

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3

Trofimov, Yu V. "On application of heat-conductive plastics in LED technology." Semiconductor Physics Quantum Electronics and Optoelectronics 16, no. 2 (June 25, 2013): 198–200. http://dx.doi.org/10.15407/spqeo16.02.198.

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4

STIKA, Laura-Alina, Valeriu-Alexandru VILAG, Mircea BOSCOIANU, and Gheorghe MEGHERELU. "NUMERICAL STUDY OF HEAT TRANSFER IN TURBULENT FLOWS, WITH APPLICATION." Review of the Air Force Academy 13, no. 3 (December 16, 2015): 77–82. http://dx.doi.org/10.19062/1842-9238.2015.13.3.13.

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5

Grgić, Davor, Siniša Šadek, and Vesna Benčik. "Decay heat calculation for spent fuel pool application." Journal of Energy - Energija 64, no. 1-4 (June 29, 2022): 90–101. http://dx.doi.org/10.37798/2015641-4146.

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The automatic procedure was developed for fuel assembly decay heat calculation based on PARCS 3D burnup calculation for fuel cycle depletion, and ORIGEN 2.1 calculation during both depletion and fuel cooling. Using appropriate pre-processor and post-processor codes it is possible to calculate fuel assembly decay heat loads for all fuel assemblies discharged from reactor. Simple graphical application is then used to distribute fuel assemblies within fuel pool and to calculate any fuel assembly, SFP rack, or whole pool heat load at arbitrary time. The application can be used for overview of fuel assembly burnups, cooling times or decay heats. Based on given date it is possible to calculate whole pool heat load and time to boiling or time to assembly uncover using simple mass and energy balances. Calculated heat loads can be input to more detailed thermal-hydraulics calculations of spent fuel pool. The demonstration calculation was performed for NPP Krsko spent fuel pool.

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6

Slivka, Dustin, Tyler Tucker, John Cuddy, Walter Hailes, and Brent Ruby. "Local heat application enhances glycogenesis." Applied Physiology, Nutrition, and Metabolism 37, no. 2 (April 2012): 247–51. http://dx.doi.org/10.1139/h11-157.

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7

N. M., Shpakova. "APPLICATION OF ALKYL SULFATES AND HEAT TREATED ERYTHROCYTES IN HYPERTONIC CRYOHEMOLYSIS." Biotechnologia Acta 8, no. 3 (June 2015): 129–36. http://dx.doi.org/10.15407/biotech8.03.129.

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8

孙, 旭东. "Application Analysis of Heat Pump in Waste Heat Heating." Advances in Energy and Power Engineering 07, no. 05 (2019): 84–93. http://dx.doi.org/10.12677/aepe.2019.75010.

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9

Mei, Viung C. "Heat Transfer of Buried Pipe for Heat Pump Application." Journal of Solar Energy Engineering 113, no. 1 (February 1, 1991): 51–55. http://dx.doi.org/10.1115/1.2929951.

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It is generally felt that the application of line source theory for ground coil design usually resulted in excessive overdesign. It was anticipated that in order for the ground coil heat pump systems to be economically competitive with other residential heating and cooling systems, ground coil overdesign had to be kept to a minimum. A new ground coil model was derived, which based on energy balance rather than the traditional line source theory. It was aimed to more accurately predict the operation of ground coils. It is the intention of this study to compare this ground coil model with models based on line source theory, a simple line source model and a modified line source model, by using them to simulate the same field test data for both summer and winter ground coil operations. The results indicated that for winter coil operation, the new model predicted the coil liquid exit temperature less than 2°C maximum deviation from the measured values, with an average deviation less than 1°C. The modified line source model had an average deviation of more than 1.5°C. For summer operation, all models underpredicted the measured soil temperatures because the effect of thermal backfill material was not included in the models. The new model still predicted the test results better than the other two models. However, when the effect of sand thermal backfill was included in the new model, which was not easy for the other two models, the calculated soil temperatures were almost identical to the test results.

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10

Sharma, Amit, Sanjeev Jain, and S. C. Kaushik. "U-SHAPED HEAT PIPE HEAT EXCHANGER FOR AIR-CONDITIONING APPLICATION." Heat Pipe Science and Technology, An International Journal 5, no. 1-4 (2014): 619–26. http://dx.doi.org/10.1615/heatpipescietech.v5.i1-4.720.

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11

Thomas, Kate Nicole. "Harnessing heat for health: A clinical application of heat stress*." Temperature 4, no. 3 (May 10, 2017): 208–10. http://dx.doi.org/10.1080/23328940.2017.1317379.

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12

Perl, T., A. Bräuer, W. Weyland, and U. Braun. "Application of heat flux transducers to determine perioperative heat exchange." Thermochimica Acta 422, no. 1-2 (November 2004): 35–40. http://dx.doi.org/10.1016/j.tca.2004.03.020.

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13

Zhang, Yin, Wenxing Shi, and Yinping Zhang. "From heat exchanger to heat adaptor: Concept, analysis and application." Applied Energy 115 (February 2014): 272–79. http://dx.doi.org/10.1016/j.apenergy.2013.11.015.

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14

Lin, Song, John Broadbent, and Ryan McGlen. "Numerical study of heat pipe application in heat recovery systems." Applied Thermal Engineering 25, no. 1 (January 2005): 127–33. http://dx.doi.org/10.1016/j.applthermaleng.2004.02.012.

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15

FERRELLI, F., A. J. VITALE, and M. C. PICCOLO. "Application of Open Source Electronics for Studying High Frequency Urban Heat Island." Anuário do Instituto de Geociências - UFRJ 38, no. 2 (January 15, 2016): 70. http://dx.doi.org/10.11137/2015_2_70_80.

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16

Schmitt, Rainer, Oswin Öttinger, Wolf Dieter Steinmann, and Maike Johnson. "PCM-Graphite Latent Heat Storage Systems for Industrial Process Heat Recovery." Advances in Science and Technology 74 (October 2010): 259–65. http://dx.doi.org/10.4028/www.scientific.net/ast.74.259.

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Increasing energy prices and shortage of fossil fuels lead to a growing interest in alternative energy sources. In combination with energy storage systems the generation of solar process heat can be provided independent from the weather leading for example to a cost efficient stabilization of power output. For this application latent heat storage units with phase change materials (PCMs) can be designed to store solar process heat within a narrow temperature interval utilizing the high storage density of the different PCMs. This is achieved using the latent heat of melting in the melting / solidification process, or the latent heat of re-crystallization in a solid / solid phase transition. However, this advantage can only be used in technical applications if the heat transfer in the PCM is sufficiently high. As most pure PCMs exhibit a low thermal conductivity (about 1 W/(m•K) or less), methods to improve heat transfer in PCMs have been under investigation for decades. The heat transfer in a PCM can be increased by addition of highly thermal conductive materials. Due to its superior properties - high thermal conductivity, good processability, and chemical inertness - graphite has distinct advantages for this purpose. Depending on the requirements of the respective application, various routes to combine PCM and graphite are used. For example, besides the fabrication of PCM/graphite composite materials, the increase of heat exchanger surface by highly thermal conductive graphite plates is a favorable method for large scale applications, in particular. Effective thermal conductivities up to 30 W/(m•K) have been realized. This paper gives an overview of actual and potential applications of PCM/graphite heat storage systems focusing on storage of solar heat for high temperature applications such as process heat generation and solar thermal power plants.

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17

Putra, Nandy, Wayan Nata Septiadi, and Ranggi Sahmura. "Analysis of CuO-Water Nanofluid Application on Heat Pipe." Applied Mechanics and Materials 590 (June 2014): 234–38. http://dx.doi.org/10.4028/www.scientific.net/amm.590.234.

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Since their first introduction to the world, both heat pipe and nanofluid have caught the interest of many researchers. Heat pipe with its unique and exceptional capability in transferring heat passively and effectively, was studied intensively and developed extensively for many applications. While nanofluid with its higher thermal conductivity and some other upgraded properties compared to conventional fluid rose as appealing research subject especially on fluid and thermal research area. This study analyzes the utilization of CuO-water nanofluid on biomaterial wick heat pipe. Laboratory-developed CuO-water nanofluid was used as working fluid for vertically straight-shaped biomaterial wick heat pipe. From the experiment, it was shown that the application of CuO-water nanofluid reduced the heat pipe thermal resistance up to 83%. It was figured out that this enhancement is due to the combination of higher thermal conductivity and better wettability of the fluid. It was also found that the heat pipe with nanofluid did not show significant degradation though being inactivated for several weeks. However, it was figured out that unlike the application of low concentration nanofluid, application of high concentration nanofluid was insignificant in improving thermal performance of the heat pipe.

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18

Mochizuki, Masataka, Thang Nguyen, Koichi Mashiko, Yuji Saito, Mohammad Shahed Ahamed, Randeep Singh, Tien Nguyen, and Vijit Wuttijumnong. "LATEST TRENDS IN HEAT PIPE APPLICATION." Heat Pipe Science and Technology, An International Journal 7, no. 1-2 (2016): 1–15. http://dx.doi.org/10.1615/heatpipescietech.2016017224.

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19

Zhao, Jing Bo. "Heat Storage Composite Wall, Ventilation Application." Advanced Materials Research 608-609 (December 2012): 1737–40. http://dx.doi.org/10.4028/www.scientific.net/amr.608-609.1737.

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The article mainly describes the complex wall in the building structure design and thermal storage wall is arranged on the application; composite wall laid in phase change heat storage module technology; heat storage composite wall summer application characteristics and feasibility; soil air exchanger application and building air conditioning system energy saving effect. Full description of composite wall in different seasons of the feasibility and effect of energy saving.

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20

Ivanova, A. A., V. A. Palyulin, A. N. Zefirov, and N. S. Zefirov. "QSPR: Application to Heat Capacity Calculation." Russian Journal of Organic Chemistry 40, no. 5 (May 2004): 644–49. http://dx.doi.org/10.1023/b:rujo.0000043708.34952.ee.

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21

SATO, Shoichi. "Chemical application of nuclear reactor heat." Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 27, no. 5 (1985): 403–10. http://dx.doi.org/10.3327/jaesj.27.403.

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22

AOYAMA, Jun. "Application examples of absorption heat pumps." Proceedings of the Symposium on Environmental Engineering 2017.27 (2017): 416. http://dx.doi.org/10.1299/jsmeenv.2017.27.416.

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23

Cao, Z. K., H. Han, B. Gu, L. Zhang, and S. T. Hu. "Application of seawater source heat pump." Journal of the Energy Institute 82, no. 2 (June 1, 2009): 76–81. http://dx.doi.org/10.1179/174602209x427060.

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24

Ebbinghaus, Simone, and Hitomi Kobayashi. "Safe Heat Application for Pediatric Patients." Journal of Nursing Care Quality 25, no. 2 (April 2010): 168–75. http://dx.doi.org/10.1097/ncq.0b013e3181ba573f.

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25

Tan, F. L., and Patrick S. K. Chua. "Object-oriented heat transfer software application." Computer Applications in Engineering Education 13, no. 4 (2005): 333–46. http://dx.doi.org/10.1002/cae.20059.

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26

Olabi, Abdul Ghani, Salah Haridy, Enas Taha Sayed, Muaz Al Radi, Abdul Hai Alami, Firas Zwayyed, Tareq Salameh, and Mohammad Ali Abdelkareem. "Implementation of Artificial Intelligence in Modeling and Control of Heat Pipes: A Review." Energies 16, no. 2 (January 9, 2023): 760. http://dx.doi.org/10.3390/en16020760.

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Heat pipe systems have attracted increasing attention recently for application in various heat transfer-involving systems and processes. One of the obstacles in implementing heat pipes in many applications is their difficult-to-model operation due to the many parameters that affect their performance. A promising alternative to classical modeling that emerges to perform accurate modeling of heat pipe systems is artificial intelligence (AI)-based modeling. This research reviews the applications of AI techniques for the modeling and control of heat pipe systems. This work discusses the AI-based modeling of heat pipes focusing on the influence of chosen input parameters and the utilized prediction models in heat pipe applications. The article also highlights various important aspects related to the application of AI models for modeling heat pipe systems, such as the optimal AI model structure, the models overfitting under small datasets conditions, and the use of dimensionless numbers as inputs to the AI models. Also, the application of hybrid AI algorithms (such as metaheuristic optimization algorithms with artificial neural networks) was reviewed and discussed. Next, intelligent control methods for heat pipe systems are investigated and discussed. Finally, future research directions are included for further improving this technology. It was concluded that AI algorithms and models could predict the performance of heat pipe systems accurately and improve their performance substantially.

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27

Lin, Zirong, Shuangfeng Wang, Jiepeng Huo, Yanxin Hu, Jinjian Chen, Winston Zhang, and Eton Lee. "Heat transfer characteristics and LED heat sink application of aluminum plate oscillating heat pipes." Applied Thermal Engineering 31, no. 14-15 (October 2011): 2221–29. http://dx.doi.org/10.1016/j.applthermaleng.2011.03.003.

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28

Kwon, Heung Kyu, Jugnwook Hwang, Hyunkwon Chung, Munsik Kang, Hyun Duk Cho, and Young Min Kim. "Thermal Power of Mobile Application Processor." International Symposium on Microelectronics 2012, no. 1 (January 1, 2012): 000866–72. http://dx.doi.org/10.4071/isom-2012-wp34.

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Until recently, heat dissipation performance of the conventional mobile AP (Application Processor) and mobile phone hasen't been a critical issue because the level of heat generated from a low-frequency, single core AP was insignificant. However, as the mobile AP consumes more power by adopting high frequency multi-core CPU (Central Processing Unit) and GPU (Graphic Processing Unit), the heat dissipation performance of its application set, such as smart phone and tablet PC (Personal Computer) became a critical issue. The conventional stand alone type applications sets such as desktop PCs and servers could afford additional thermal management tools such as heat sink, heat pipe and cooling fan to improve thermal performances. On the contrary, the limited inside space of mobile set doesn't allow the use of conventional cooling methods so that the feasible thermal solutions for the mobile AP and mobile sets are limited. In addition, since mobile set is normally in contact with human skin during its operation, the criterion, Tcsmax (Maximum Case Skin Temperature) which determines the thermal power per-formance of the mobile set is different from the conventional criterion, Tjmax (Maximum Junction Temperature) of CPU. Therefore, the thermal performance of mobile AP and its mobile set should be carefully determined to satisfy the Tcsmax by considering AP operation power and heat dissipating performance of the its application set. This paper shows how to define the thermal power performance of mobile AP and its mobile application set and which technologies are important for future mobile AP and its application sets.

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29

Shelginsky, Aleksandr Ya, and Igor V. Yakovlev. "Analyzing the Application of Heat Pump Units in Heat Supply Systems." Vestnik MEI 2, no. 2 (2018): 42–52. http://dx.doi.org/10.24160/1993-6982-2018-2-42-52.

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30

Rydalina, N. V., B. G. Aksenov, O. A. Stepanov, and E. O. Antonova. "Application of porous materials in heat exchangers of heat supply system." Power engineering: research, equipment, technology 22, no. 3 (September 8, 2020): 3–13. http://dx.doi.org/10.30724/1998-9903-2020-22-3-3-13.

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Heat exchange capacity increase is one of the main concerns in the process of manufacturing modern heat exchange equipment. Constructing heat exchangers with porous metals is an advanced technique of heat exchange increase. A construction of heat exchangers with porous aluminum is described in this paper. The first heat transfer agent (hot water) flows through thin copper tubes installed within the porous aluminum. The second heat transfer agent (freon) flows through the pores of aluminum. Laboratory facility was created to study such a heat exchanger. Series of experiments were carried out. The purpose of the research presented here is to create a mathematical model of heat exchangers with porous metals, to perform analytical calculation of the heat exchangers and to confirm the results with the experimental data. In this case, one can`t use the standard methods of heat exchangers calculation because the pores inner surface area is indeterminate. The developed mathematical model is based on the equation describing the process of cooling the porous plate. A special mathematical technique is used to take into account the effect of tubes with water. The model is approximate but its solution is analytic. It is convenient. One can differentiate it or integrate it, which is very important. Comparison of calculated and experimental data is performed. Divergence of results is within the limits of experimental error. If freon volatilizes inside the heat exchanger, the heat of phase transition has to be taken into account alongside with heat capacity. The structure of the mathematical model makes it possible. The results presented in this paper prove the practicability of using porous materials in heat exchange equipment.

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31

Silaipillayarputhur, Karthik, and Tawfiq Al-Mughanam. "Performance of Pure Crossflow Heat Exchanger in Sensible Heat Transfer Application." Energies 14, no. 17 (September 2, 2021): 5489. http://dx.doi.org/10.3390/en14175489.

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All process industries involve the usage of heat exchanger equipment and understanding its performance during the design phase is very essential. The present research work specifies the performance of a pure cross flow heat exchanger in terms of dimensionless factors such as number of transfer units, capacity rate ratio, and heat exchanger effectiveness. Steady state sensible heat transfer was considered in the analysis. The matrix approach that was established in the earlier work was used in the study. The results were depicted in the form of charts, tables, and performance equations. It was observed that indeterminately increasing the number of transfer units past a threshold limit provided very marginal improvement in the performance of a pure cross flow heat exchanger. Likewise, flow pattern in a heat exchanger is usually assumed either as mixed or unmixed. However, due to various operating conditions, partially mixed conditions do exist. This work considers partially mixed conditions in the tube side of the heat exchanger. The correction factor for heat exchanger effectiveness was developed to accommodate partially mixed flow conditions in the pure cross flow heat exchanger.

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32

YANG, RUI, Seok-Ho Rhi, and Kibum Kim. "Application Design of Heat Pipe in Fuel Cell System Heat Management." Journal of Industrial Science and Technology Institute 34, no. 2 (December 30, 2020): 49–55. http://dx.doi.org/10.54726/jisti.34.2.9.

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33

Ionkin, I. L., P. V. Roslyakov, and B. Luning. "Application of Condensing Heat Utilizers at Heat-Power Engineering Objects (Review)." Thermal Engineering 65, no. 10 (September 20, 2018): 677–90. http://dx.doi.org/10.1134/s0040601518100038.

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34

Svec, O. J., and J. H. L. Palmer. "Performance of a spiral ground heat exchanger for heat pump application." International Journal of Energy Research 13, no. 5 (1989): 503–10. http://dx.doi.org/10.1002/er.4440130502.

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35

Topçuoğlu, Kıvanç. "Trombe Wall Application with Heat Storage Tank." Civil Engineering Journal 5, no. 7 (July 18, 2019): 1477–89. http://dx.doi.org/10.28991/cej-2019-03091346.

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In this study, an investigation was made of the performance of a Trombe wall of classical structure used together with a heat store. Most Trombe walls are able to supply the heating needs of a space to which they are connected without the need for extra heating at times when the sun is shining. However, the heat obtained from the Trombe wall can be in excess of needs at such times, and measures must be taken to provide ventilation to the heated space. It is thought that the heat energy can be used more efficiently and productively by storing the excess heat outside the building and using it inside the building when there is no sunlight. To this purpose, a tank full of water and marble was built as a heat store as an alternative to the general Trombe wall design, and an attempt was made to minimise heat losses by burying it in the ground. It was concluded that in place of a traditional Trombe wall system using a massive wall heat store, a heat store could be constructed in a different position and with different materials. The Trombe wall system which was developed and tested met up to 30% of the energy needed for heating and cooling the building, and reduced the architectural and static disadvantages of Trombe wall systems. As a result of the study, it was seen that where a standard reinforced concrete wall could supply heat to the inside for 7 hours and 12 minutes, the figure for a wall made of paraffin wax was 8 hours and 55 minutes. In the same study, the heat storage thickness of a reinforced concrete wall was calculated as 20 cm, while that of a paraffin wax wall was calculated as 5 cm.

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36

PORCHERON, Emmanuel, Pascal LEMAITRE, Denis MARCHAND, Amandine NUBOER, and Jacques VENDEL. "ICONE15-10328 HEAT, MASS AND AEROSOLS TRANSFERS IN SPRAY CONDITIONS FOR CONTAINMENT APPLICATION." Proceedings of the International Conference on Nuclear Engineering (ICONE) 2007.15 (2007): _ICONE1510. http://dx.doi.org/10.1299/jsmeicone.2007.15._icone1510_166.

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37

Baradey, Y., M. N. A. Hawlader, Ahmad Faris Ismail, and Meftah Hrairi. "WASTE HEAT RECOVERY IN HEAT PUMP SYSTEMS: SOLUTION TO REDUCE GLOBAL WARMING." IIUM Engineering Journal 16, no. 2 (November 30, 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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38

Kumar, Anup, and Amit Prakash Sen. "Finite Element and Temperature Distribution Analysis over the Heat Pipe Boundary." International Journal for Research in Applied Science and Engineering Technology 10, no. 9 (September 30, 2022): 1397–400. http://dx.doi.org/10.22214/ijraset.2022.46851.

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Abstract: Researcher undergoes with various research activities to minimize the energy wastage and a researchers drawn their attention towards the recovery or storage of wasted energy but still there is a need of proper application and execution of the done research. The heat depletion through heat pipe heat exchanger is an excellent device to recover waste energy. The heat pipe heat exchanger not only is the effective way of storing the waste thermal energy but also it also prevents global warming. Heat pipes are inert, extremely consistent and provides with high heat transfer rates with minimal heat loss. These heat pipes are finding their way into sensitive applications such as notebook computers. A heat pipe is designed for cooling application in a computer has been evaluated through thermal analysis. The developed model of heat pipes used to draw a comparison with various parameters

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39

Hu, Xiao Na, and Yin Li. "Study on Application Properties of PCM Mortars." Applied Mechanics and Materials 638-640 (September 2014): 1499–502. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.1499.

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Lauryl alcohol mixed paraffin to prepare PCM mortars. Study on the heat storage using DSC equipment; study on the temperature level and temperature time by boilingwater; the DRM-II type "heat storage coefficient measuring instrument is used to check heat storage coefficient,and analysis the thermal inertia through heat storage coefficient and thermal conductivity.

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40

Trunov, Stanislav S., and Aleksey V. Kuzmichev. "Economic Feasibility of Application Semiconductor Heat Pumps." Elektrotekhnologii i elektrooborudovanie v APK, no. 3 (September 20, 2020): 63–66. http://dx.doi.org/10.22314/2658-4859-2020-67-3-63-66.

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Energy consumption around the world is growing continuously and more rapidly. There are three ways to solve the energy problem in the future: the use of new and more efficient use of existing energy sources and the rational use of extracted energy. Modern technologies for developing fuel deposits allow extracting on average no more than 40 percent of the subsurface content, the level of science and technology does not allow achieving a greater level of its extraction with sufficient economic effect. The most cost-effective, simple and feasible way to efficiently use the extracted energy is to utilize the waste heat. The article considers the advantages and possibility of using thermoelectric heat pumps based on Peltier elements. (Research purpose) The research purpose is in justifying the effectiveness of using semiconductor heat pumps in thermal technological processes at livestock facilities. (Materials and methods) During the study, the authors used methods of system analysis and synthesis of existing knowledge in the field of research on the development of thermoelectric heat pumps. (Results and discussion) The article presents the adjusted methodology for calculating the efficiency of thermoelectric heat pumps. The heat energy withdrawn by the hot circuit, and directed to heating the air, exceeds the energy consumed from the electrical network. (Conclusions) The utilization coefficient in most modern thermoelectric installations is at the level of 3-5, which means that one kilowatt-hour of electrical energy consumed produces 3-5 times more thermal energy. Heat pumps are efficient because they allow to use renewable energy, and therefore they are economically feasible.

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41

Chen, L., X. Qin, and F. Sun. "Model of irreversible finite-heat capacity heat reservoir absorption heat transformer cycle and its application." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 221, no. 12 (December 1, 2007): 1643–51. http://dx.doi.org/10.1243/09544062jmes634.

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An irreversible four-temperature-level absorption heat transformer cycle model with variable-temperature heat reservoirs is established, which considers the heat resistances between the heat reservoirs and the working fluid, the internal irreversibility due to internal dissipation of the working fluid, and the heat leakages between the heat reservoirs and the surrounding. The general relations between the heating load and the coefficient of performance are derived, and the general performance characteristic and the optimal performance characteristic are obtained using numerical examples. Moreover, the cycle model and the derived general relations are confirmed by comparing the prediction results of the model and engineering analysis results for real absorption heat transformer, and the cycle performance characteristic are discussed. The results obtained herein can provide some guidance for the optimal design of absorption heat transformer.

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42

Yovchenko, Alla, Sergii Bespalko, Oksana Tryhub, Sviatoslav Poliakov, Guy Baret, and Alberto Munoz Miranda. "Water-paraffin dispersion systems: manufacturing and application." Acta Innovations, no. 36 (September 30, 2020): 31–47. http://dx.doi.org/10.32933/actainnovations.36.3.

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The paper presents the study results of the stability and heat storage capacity of paraffin-in-water phase change suspensions (PCSs) obtained by the homogenization of paraffin and water in the developed rotary hydrodynamic homogenizer. The optimal concentration of components for obtaining stable paraffin-in-water suspensions is found. It is shown that the stable PCSs in the form of pastes, gels, and liquids can be obtained depending on the concentration of water, paraffin, and the surface active agent (SAA) as well as its type. In addition, the scheme of the solar heating system with the heat storage tank where the PCS functions both as the heat transfer fluid and the heat storage media is presented. It is shown that the use of PCS in the domestic solar heating system allowed the heat storage capacity of the storage tank to be increased by 25% as a result of the high fusion heat of paraffin and the high value of the water specific heat capacity. The estimation of the saving rate from applying fluid PCS as a heat storage medium is also presented and discussed.

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Chaemchuen, Somboon, Xuan Xiao, Nikom Klomkliang, Mekhman Yusubov, and Francis Verpoort. "Tunable Metal–Organic Frameworks for Heat Transformation Applications." Nanomaterials 8, no. 9 (August 26, 2018): 661. http://dx.doi.org/10.3390/nano8090661.

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Metal–Organic Frameworks (MOFs) are a subclass of porous materials that have unique properties, such as varieties of structures from different metals and organic linkers and tunable porosity from a structure or framework design. Moreover, modification/functionalization of the material structure could optimize the material properties and demonstrate high potential for a selected application. MOF materials exhibit exceptional properties that make these materials widely applicable in energy storage and heat transformation applications. This review aims to give a broad overview of MOFs and their development as adsorbent materials with potential for heat transformation applications. We have briefly overviewed current explorations, developments, and the potential of metal–organic frameworks (MOFs), especially the tuning of the porosity and the hydrophobic/hydrophilic design required for this specific application. These materials applied as adsorbents are promising in thermal-driven adsorption for heat transformation using water as a working fluid and related applications.

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Muhamad Zuhud, Andrya, Facta Mochammad, and Widayat Widayat. "Thermoelectric application in energy conservation." E3S Web of Conferences 73 (2018): 01009. http://dx.doi.org/10.1051/e3sconf/20187301009.

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In the becoming years, energy demand is expected to grow faster than current needs. Thermoelectric technology works through conversion process from heat energy into electricity directly and vice versa. Thermoelectric device that use for energy conversion from heat into electrical is known as thermoelectric generator (TEG). TEG is made of Bismuth Telluride, Lead Telluride and Silicon Germanium compound which contains figure of merit (ZT). In term of applications, TEG is possible to be applied in extreme condition such as a power supply in the space mission, harvesting heat from transportation vehicle, and getting waste heat from industrial sector. Furthermore thermoelectric generation is possible also to be applied as a micro power generation system which is very useful for electrical source for residential installation. In this paper, a brief review of above applications is presented. Early developed research investigation is carried out for application of thermoelectric generator in residential installation by using biomass wooden-fuel stove. The early result shows that there are amount of heat emitted from the side cylinder cook stove as energy waste. There is a chance and possibility to harvest energy waste in the stove to become electric source and finally this related research effort will increase the efficiency of the electric stove in energy conversion.

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Chen, Zutao, Zhongjun Yu, Jia Fu, and Bin Liu. "Study of heat pipe in motor cooling: A review." E3S Web of Conferences 261 (2021): 01009. http://dx.doi.org/10.1051/e3sconf/202126101009.

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The heat pipe as one of the most efficient heat exchanger device is used in many thermal engineering applications. Through sufficient literature research and summary, a comprehensive and systematic analysis of the application of heat pipe cooling technology in motor cooling is provided. The basic principles and key technologies of heat pipe cooling technology is introduced. What’s more, various factors affecting the cooling efficiency of heat pipes and two main types of heat pipe applications in motor cooling are discussed. Finally, the current status of research on heat pipe cooling motors at home and abroad are reviewed.

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Liu, Jia You. "Application of Heat Pump Technology in Coal Mine." Advanced Materials Research 562-564 (August 2012): 1083–86. http://dx.doi.org/10.4028/www.scientific.net/amr.562-564.1083.

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Heat pump is widely used in many fields, and it has advantages of energy-saving, environment-friendly and good economy, etc. Coal mine drainage, cooling water from cooling tower of power plant and exhaust air in coal mine have stable temperature throughout the year, and they are good heat (cold) source for heat pump. By analyzing technical and economic performance of heat pump, several ways and purposes of heat pump used in coal mine are proposed, and the technical processes are given. Application of heat pump to recycle energy from coal mine drainage, cooling water and exhaust air is beneficial to improving economic efficiency and achieving sustainable development for coal mine.

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Phor, Lakshita, Tanuj Kumar, Monika Saini, and Vinod Kumar. "Al2O3-Water Nanofluids for Heat Transfer Application." MRS Advances 4, no. 28-29 (2019): 1611–19. http://dx.doi.org/10.1557/adv.2019.172.

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AbstractThis manuscript aims at synthesizing Al2O3-de-ionized water nanofluid and constructing a practical design of self-cooling device that does not require any external power input. Crystalline phase of powder was confirmed by X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) showed the various functional groups and absorption bands and average particle size was calculated to be 58.608 nm by Field Emission Scanning Electron Microscopy (FESEM) annealed at 900K. Experimental investigations were carried out to determine the effect of volume fraction of Al2O3 nanoparticles in the nanofluid on the rate of heat transfer from heat load to heat sink. Temperature of heat load was taken as 80° C. According to our results, cooling by 15°C, 13°C and 12°C was attained when volume fraction of nanoparticles was 1.5%, 1% and 0.5% respectively. The thermal conductivity was also measured and found to be increasing with the concentration of nanoparticles in nanofluid. Hence, indicating the use of nanofluids with suitable concentration in various cooling applications.

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Liu, Jianhong, Fumin Shang, Kangzhe Yang, Chaoyue Liu, and Yong Wu. "Study on application technology of pulsating heat pipe." E3S Web of Conferences 248 (2021): 01051. http://dx.doi.org/10.1051/e3sconf/202124801051.

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Pulsating heat pipe(PHP) has many advantages, such as small volume, simple structure, low cost, good heat transfer performance, it have great potential in the application of refrigeration, aerospace, waste heat recovery and low - grade energy utilization. Based on the analysis of a large number of research results at home and abroad, the application status of pulsating heat pipe technology is summarized in this paper, which can provide scientific guidance for the design, operation and large-scale application of pulsating heat pipe.

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Amarnagendram, Dr B. "Design and Analysis of Various Baffle System in Shell Tube Heat Exchanger." International Journal for Research in Applied Science and Engineering Technology 9, no. VII (July 31, 2021): 3207–11. http://dx.doi.org/10.22214/ijraset.2021.37010.

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Heat exchangers are systems of thermal engineering in which its applications are occurred in different industries. Heat exchangers are the basic or heart of once organized plant since it transfers energy to the processing plant Shell and tube heat exchanger is the most common type heat exchanger widely use in refinery and other chemical process, because it suits high pressure application. The process in solving simulation consists of modeling and meshing the basic geometry of shell and tube heat exchanger using CFD package ANSYS 18.0. The objective of the project is design of shell and tube heat exchanger with various baffle structure and study the flow and temperature field inside the shell using ANSYS software tools. The heat exchanger with single, double, and with 10 and 20 degree inclined baffle will be defined. In simulation will show how the pressure varies in shell due to different double baffle angle and flow rate. The flow pattern in the shell side of the heat exchanger with angled baffles was forced to which results in a significant increase in heat transfer coefficient per unit pressure drop in the heat exchanger.

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Mochizuki, Masataka, and Thang Nguyen. "HEAT PIPES: EVOLUTION OF ENDLESS APPLICATION OPPORTUNITIES." Heat Pipe Science and Technology, An International Journal 5, no. 1-4 (2014): 69–76. http://dx.doi.org/10.1615/heatpipescietech.v5.i1-4.40.

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