... condensing temperature settings: 35, 40, and 45 °C, and the evaporation temperatures ranged from −18 °C to +14 °C. It has been observed that the VCRS with domestic LPG consumes less power than that of R134a and it's evident that domestic LPG is compatible with mineral oil. The findings indicate that R134a's...

... 11 03 2025 flat-plate micro heat pipe wick vapor–liquid two-phase flow heat transfer performance evaporation gasification heat transfer heat and mass transfer heat pipes heat transfer enhancement two-phase flow and heat transfer Applied Basic Research Foundation of Yunnan...

... 09 2024 08 02 2025 10 02 2025 28 02 2025 heat transfer vacuum drying indirect drying drying rate feed pellets drying conduction evaporation heat and mass transfer low temperature heat transfer porous media Ministerstvo Školství, Mládeže a Telovýchovy 10.13039...

... temperature and input power level to the thermosiphon have also been investigated. Regarding evaporator plate temperature and heat transfer coefficient, the 15-wt% 2-propanol–water solution outperforms pure water and butanol–water mixture as a working fluid for most test cases. If heat transfer performance...

...Shikang Yin; Zhenhua Jiang; Shuai Gong; Bingyao Lin; Deping Dong Loop heat pipe is a passive two-phase heat transfer device. The key component of the loop heat pipe is the evaporator. In this study, the gas–liquid two-phase behavior inside a two-dimensional porous medium with a single-pore size...

...Philippe Aubin; Jan Van herle; John R. Thome Operating the cooling system of a methanation reactor using an open-loop two-phase thermosiphon with evaporating water as the cooling liquid is an effective way to ensure safe operation as it does not rely on a recirculating pump. The aim of the reactor...

...Danny J. Lohan; Bhaskarjyoti Sarma; Shailesh N. Joshi; Ercan M. Dede; Anali Soto; Srivathsan Sudhakar; Justin A. Weibel The heat transfer and hydraulic performance of a flat evaporator, pump-assisted capillary loop cooler is evaluated for a 1 c m 2 heat source. The cooler consists of a copper...

... their thermal performance. While wicking structures promote capillary pumping of the working fluid and thin film evaporation, they can result in capillary evaporation and further enhance the evaporation heat transfer. In this study, a 0.5 mm thick layer of 105 µm sintered copper particles was added to the inner...

...Mirza M. Shah Evaporators and boilers with flow across horizontal tube bundles are widely used in industries including refrigeration and chemical processing. As yet there is a lack of a well-verified correlation for predicting local or average CHF (critical heat flux) in such bundles. The available...

.... , and Ma , H. B. , 2013 , “ Analytical Solutions of Heat Transfer and Film Thickness in Thin Film Evaporation ,” ASME J. Heat Transfer , 135 ( 3 ), p. 031501 . 10.1115/1.4007856 [13] Ji , Y. , Chen , H. , Kim , Y. J. , Yu , Q. , Ma , X. , and Ma , H. B. , 2012...

... led the circulating water temperature difference decreases the most, which was 7.63 °C (74.15%). The increase of relative humidity and atmospheric pressure led to an increase in convective heat transfer and the decrease in evaporative mass transfer, while both the convective heat transfer...

... 2023 24 10 2023 24 10 2023 16 11 2023 automobile air conditioning (AAC) R134a R1234yf R1234ze(E) condensation evaporation heat and mass transfer heat exchangers Ciconkov [ 1 ] has presented a review on refrigerants and has discussed refrigerants used in an AAC. He...

...Yang Liu; Zhe Yan; Zhenhua Jiang; Nanxi Li; Baoyu Yang; Yinong Wu This study experimentally investigates the small two-phase thermosyphon loop with a minichannel evaporator. The influences of heating power, fan power, and inclination angle on the heat transfer performance are presented...

...Atalay Yildirim; Özden Ağra; Mustafa Kemal Sevindir We experimentally investigated the evaporation characteristics of a sessile water droplet on a glass substrate with different surface roughness levels. The influence of five parameters is evaluated for the evaporation process: substrate...

..., with the length of 500 mm and Φ22 × 1.5 mm. The results indicate that in the process of phase change, the typical flow regimes of bubble flow, slug flow, and churn flow can be observed in the evaporator, and the presence of bubbles has an obvious disturbance on the flow field. In addition, the discontinuous...

...T. Usharani; M. Suresh This research study aims to work out the best possible performance parameters for a two-stage direct–indirect evaporative cooler (IDEC) when it is operated in Indian climatic conditions. A numerical simulation model has been developed to estimate temperature, relative...

... emission, which puts tremendous pressure on the environment. Direct evaporative cooling technology is a good choice for reducing energy consumption and carbon emissions. However, most of the current direct evaporative coolers offer excellent cooling performance at any temperature, whether the space needs...

...Md Naim Hossain; Koushik Ghosh The objective of the present work is to find out the optimal mass flux of two common refrigerants, R32 and R410A, undergoing boiling in an evaporator tube based on the entropy generation minimization approach. An entropy generation model is developed for two-phase...

... 06 12 2022 offshore energy storage accumulator phase change condensation evaporation two-phase flow and heat transfer Malta Council for Science and Technology 10.13039/501100001867 REP-2021-008 Over the past decade, the wind and solar energy sectors received...

...Zhongyan Liu; Hao Zhang; Dahan Sun; Xu Jin; Shuang Zheng; Xin Zhang CO 2 is a promising refrigerant substitute, and falling film evaporator is widely used in high-capacity heat pump systems. In this article, a CO 2 heat pump experimental device is built. According to experimental parameters, a CO 2...