Performance analysis of hydrate-based refrigeration system. (15th August 2017)

• Record Type: Journal Article
• Authors: Zhang, Wenxiang; Wang, Yanhong; Lang, Xuemei; Fan, Shuanshi
• Is Part Of: Energy conversion and management. Volume 146(2017)
• Page Start: 43
• Page End: 51
• Publication Date: 2017-08-15
• Subjects: Hydrate -- Refrigeration -- Coefficient of performance -- Aspen Plus -- Simulation; Direct energy conversion -- Periodicals; Energy storage -- Periodicals; Energy transfer -- Periodicals; Énergie -- Conversion directe -- Périodiques; Direct energy conversion; Periodicals; 621.3105
• DOI: 10.1016/j.enconman.2017.04.091
• Languages: English
• ISSNs: 0196-8904

Abstract

Graphical abstract: Highlights: Three types of hydrate-based air conditioning systems were designed. Coefficient of performance of the optimized hydrate-base air conditioning system was up to 8.97. Coefficient of performance of the hydrate-base air conditioning system was 2–4 times of the commercial refrigeration cycle. The novel hydrate-based air conditioning systems achieved refrigeration at the ambient temperature of 298–308 K. Abstract: A novel refrigeration system called hydrate-based refrigeration system was proposed, and its performance was analyzed by using Aspen Plus. The system consisted of five parts, compressor/pump, hydrate formation tank, hydrate dissociation tank, expander and gas/liquid separator. Compared with conventional compression refrigeration cycle, hydrate-based refrigeration system uses hydrate formation tank to replace condenser to achieve heat release; hydrate dissociation tank for evaporator of achieve refrigeration. There were three types of the hydrate-based refrigeration system, which refrigeration cycles were analyzed through using Aspen Plus. Methyl fluoride, cyclopentane/monofluoro cyclopentane and water were used to form hydrate as the working fluids. For the system of methyl fluoride, cyclopentane and water, the highest coefficient of performance was 8.01–8.97, For the system of methyl fluoride, monofluoro cyclopentane and water, the best coefficient of performance was 7.58–8.49. Based on it, the relation of temperature and entropy during refrigeration process for hydrate-based refrigeration system was analyzed. It's coefficient of performance was 2–4 times of the conventional compression refrigeration.