000			03426nam a22001697a 4500
082			_a621.565 _bP886T
100			_aPrasad, Mahaveer _926527
245			_aThermodynamic And Numerical Analysis Of Adsorption Cooling Systems _cby Mahaveer Prasad
260			_aIIT Jodhpur _bDepartment of Mechanical Engineering _c2020
300			_axvi,41p. _bHB
520			_aConventional refrigeration systems use refrigerants such as chlorofluorocarbon (CFC), hydrofluorocarbon (HFC), and hydrochlorofluorocarbon (HCFC). These refrigerants own high ozone depletion potential (ODP) and global warming potential (GWP). Thus, researchers are moving towards alternative solutions of these refrigeration systems. One of the solutions is absorption refrigeration systems; however, these systems face high crystallization, corrosion, toxicity, and maintenance. Thus, to overcome these problems, an idea of adsorption cooling systems devoid of crystallization and maintenance problem was adapted. Adsorption cooling systems have numerous advantages, such as the use of a low-grade heat source, natural refrigerants like water, fewer moving parts, environment-friendly, etc. Adsorption cooling systems have significant applications in automobile vehicles, food and beverage preservation, ice production, power plants, etc. One of the significant limitations of adsorption refrigeration systems with two bed continuous cycles is the low coefficient of performance. Various adsorption refrigeration cycles are proposed in the literature to improve the system's performance, namely: heat recovery cycles, mass recovery cycles, and thermal wave cycles. Among these three advanced cycles, the thermal wave-type heat recovery cycle (TWHRC) is particularly promising since the coefficient of performance (COP) above one is achievable by implementing this cycle. Further improvement of TWHRC might be possible by combining the cycle with the mass recovery process. Combined mass and thermal wave-type heat recovery cycles are rarely studied. The first chapter of the thesis has two main objectives. The primary objective is to design and study the adsorption cooling system based on combined thermal wave heat and mass recovery cycle. The second objective is to study the effect of operating parameters (maximum and minimum bed temperatures, condensation, and evaporation temperatures) on the COP and specific cooling effect (SCE). In this study, activated carbon-ammonia is considered as the working pair. Correlations between the heat of adsorption or desorption and the concentration of ammonia are developed. The compressibility effect is considered for the calculation of adsorption and desorption heat. In the second chapter, the thermal wave behavior of an activated carbon adsorption bed with water as heat transfer fluid (HTF) flowing in steel tubes is studied. The analysis is performed for both 2-D and 3-D numerical models with the help of commercial software package ANSYS. The results obtained are compared between the two models developed; one with having multiple straight tubes and the other is with having U-tubes.Key Words: Adsorption cooling; heat and mass recovery; thermal wave; coefficient of performance; specific cooling effect
650			_aAdsorption Cooling Systems _926528
650			_aMTech Theses _926529
650			_aDepartment of Mechanical Engineering _926530
700			_aChakraborty, Prodyut Ranjan _926531
942			_cTH
999			_c14768 _d14768