Thermal Analysis of Double Effect Absorption System Cascaded with Ejector and  Enhanced Vapor Compression Refrigeration Cycle

Siddique, Sefat Mahmud; Uzzaman, Md. Muhtasim

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dc.contributor.author	Siddique, Sefat Mahmud
dc.contributor.author	Uzzaman, Md. Muhtasim
dc.date.accessioned	2025-02-25T09:02:01Z
dc.date.available	2025-02-25T09:02:01Z
dc.date.issued	2024-07-04
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dc.identifier.uri	http://hdl.handle.net/123456789/2298
dc.description	Supervised by Dr. Mohammad Monjurul Ehsan, Professor, Department of Production and Mechanical Engineering(MPE), Islamic University of Technology (IUT) Board Bazar, Gazipur-1704, Bangladesh This thesis is submitted in partial fulfillment of the requirement for the degree of Bachelor of Science in Mechanical Engineering, 2024	en_US
dc.description.abstract	The traditional Double Effect Absorption Refrigeration Cycle (DE-ARC) series and parallel configuration cascaded with the conventional Vapor Compression Refrigeration (VCR) technology solves the limitations faced with these standalone respected cycles. Although these systems (Compression Double Effect Absorption Cycle (C-DAC (Series), C-DAC (Parallel))) have difficulties in utilizing high waste heat recovery and consume high compressor power. Regarding these limitations, in our present study, a modified DE-ARC (Series and Parallel) with a Refrigerant Heat Exchanger (RHX) is combined with an improved vapor compression refrigeration (VCR) system that includes an ejector, resulting in the development of the proficient Ejector Double Effect Absorption Cycle. (E-DAC (Series), E-DAC (Parallel)) and Ejector Injection Double Effect Absorption Cycle (EI-DAC (Series), EI-DAC (Parallel)) using LiBr/H2O and R41 as the working fluid. The Engineering Equation Solver (EES) is employed to generate a numerical model for the purpose of conducting a thorough analysis based on the concepts of energy, mass, and exergy conservation, encompassing both the first and second laws of thermodynamics. The results indicate that the four suggested systems outperform the traditional cascaded cycles. Among these four combinations, the EI-DAC (Parallel) configuration shows the highest performance, with an improvement of approximately 16.5% and 14% compared to the C-DAC (Series) and C-DAC (Parallel) configurations, respectively. Further analysis reveals that the coefficient of performance (COP) of our proposed systems exhibits a linear relationship with the evaporator temperature. Furthermore, the systems exhibit improved performance at higher generator temperatures, making them well-suited for utilizing larger quantities of waste heat while still being able to operate at lower evaporator temperatures. Output of this comprehensive theoretical thermodynamic study yield a thorough comprehension of the performance of E-DAC (Series and Parallel) and EI-DAC (Series and Parallel) systems and provide useful suggestions for future enhancement and optimization	en_US
dc.language.iso	en	en_US
dc.publisher	Department of Mechanical and Production Engineering(MPE), Islamic University of Technology(IUT), Board Bazar, Gazipur-1704, Bangladesh	en_US
dc.title	Thermal Analysis of Double Effect Absorption System Cascaded with Ejector and Enhanced Vapor Compression Refrigeration Cycle	en_US
dc.type	Thesis	en_US