... of the accumulators needs to be investigated. Despite the encouraging results emerging from this study, corrosion presents a critical challenge for replacing compressed air with CO 2 . CO 2 condensation on low-carbon steels typically used for offshore accumulators is highly corrosive in the presence of seawater...

...Sourav Pramanick; Prasenjit Dey; Sandip K. Saha This paper analyses the condensation heat transfer phenomena in minichannel using acetone, ammonia, propylene, and R134a as the working fluids used in new-age space applications. A novel numerical model is developed considering the changes in local...

... 12 05 2022 heat pipe heat exchanger limits inner approach boiling condensation heat recovery heat transfer enhancement thermal systems two-phase flow and heat transfer Heat pipe (HP) technology becomes popular in waste heat recovery applications, heating, ventilation...

... temperature −5.241 °C Condenser temperature 33.69 °C Refrigerant mass flowrate 1.902 kg/s Shell and tube evaporator dimensions and main parameters Length of tubes 2.7432 m Steel tubes conductivity 50 W/m C Shell inner diameter 0.4572 m The outer diameter of tubes 0.01 m...

... Email: ssmehend@mtu.edu Email: langyuanl@163.com Email: chenjianan@stu.tjcu.edu.cn Email: tianjj@tjcu.edu.cn 30 05 2021 12 08 2021 16 08 2021 13 10 2021 sessile droplet carbon fiber surface phase transition time deformation bubbles condensation...

...Kaifen Yan; Nanxi Li; Yinong Wu; Rongjian Xie The cryogenic fluids’ flow performance and condensation characteristics with different heating powers in cryogenic loop heat pipes (CLHPs) have not been studied due to the difficulty of measurement at low temperature. In this study, a test system...

... desalination multi-effect mathematical modeling GOR condensation energy systems evaporation heat and mass transfer low-temperature heat transfer thermal systems Water is the main requisite for any prosperous life and development [ 1 ]. The main part of freshwater is stored in the Arctic...

...Kaipo Kekaula; Yitung Chen Two-phase flow pressure drop during condensation of steam inside inclined tube heat exchangers was investigated over a wide range of ambient temperature. The ambient temperature changes from 3 to 45 °C, the steam mass flux varies from 3 to 18 kg/(m 2 · s), vapor quality...

... condensation evaporation heat and mass transfer The use of refrigeration systems in industries such as food production, pharmaceuticals, and breweries allowed for developments to be made in each respective field and is largely relied on daily operations. The UK food and drink industry accounts...

... pipe surface by a hot alkali exposure process, after which the parts are assembled into a heat pipe. The assembled heat pipe is connected to a vacuuming and charging system. Next, a second vacuum process is conducted to remove the non-condensable gases that might be produced during the vacuuming...

... on the grand canonical Monte Carlo (GCMC) method. Besides, the influence of adsorption characteristics of 3 He and 4 He on the condensation efficiency, the mass distribution after condensation equilibrium, and the self-cooling loss of the sorption cooler were analyzed. The results show that for the 3 He...

...Hamed Abdul Majeed; Ting Wang The paper industry uses steam to dry paper web through cylinder dryers. As steam condenses inside the dryer, the condensate is removed by means of either a stationary or a rotary siphon. However, during the siphoning process for transporting the condensate, flashing...

...Abhinav Bhanawat; Mahesh Kumar Yadav; Maneesh Punetha; Sameer Khandekar; Pavan K. Sharma Empirical/semi-empirical correlations are available in the literature to quantify the effect of several major parameters, like bulk pressure, non-condensable gas mass fraction, and wall subcooling...

...: angime@mot.upv.es Email: vidolrui@mot.upv.es Email: alponmo@mot.upv.es 09 09 2019 01 04 2020 01 04 2020 20 05 2020 waste heat recovery jet-ejector cycle adiabatic engine jet-ejector optimization engine efficiency R1234yf condensation energy efficiency energy...

... difference in water surfaces of two tanks. This height difference and the elevation of the inverted U-pipe tip define the value of the vacuum to be grown. The U-pipe tip is connected to the discharge pipe of a compressor which draws a mixture of air, and water vapor from the steam condenser and raises...

... to partial condensation conditions expected in the system as a result of the design. This study makes use of an experimental apparatus to measure steam pressure drop over a range of partial to full condensation inside a circular horizontal tube. The experiment is conducted by measuring the steam flow...

... environments, and particle size-dependent vapor condensation and evaporation. Homogeneous nucleation of water droplets was modeled with classical nucleation theory (CNT) and a modified form of nucleation theory published by Dillmann, A., and Meier, G. E. A. (1991, “A Refined Droplet Approach to the Problem...

...Wei Li; Di Lyu; Jingzhi Zhang; S. A. Sherif This study numerically investigated the condensation heat transfer and flow characteristics of refrigerant R134a in a rectangular minichannel. Three-dimensional simulations were carried out at different mass fluxes, vapor qualities, and gravity conditions...

...Xiang Ma; Wei Li; Chuan-cai Zhang; Zhi-chuan Sun; David J. Kukulka; Yan He; Nae-Hyun Kim; Zhixiao Zhang An experimental investigation of condensation and evaporation heat transfer characteristics was performed in 15.88-mm-OD and 12.7-mm-OD smooth and three-dimensional enhanced tubes (1EHT, 3EHT...

...Peiyu Chen; Gongnan Xie; Bengt Sunden The shell condenser is one of the key components of underwater vehicles. To study its thermal performance and to design a more efficient structure, a computational model is generated to simulate condensation inside straight and helical channels. The model...