Investigation of Cascading Adsorption Refrigeration System with Integrated Evaporator-Condenser Heat Exchanger Using Different Working Pairs. (August 2015)

• Record Type: Journal Article
• Authors: Dakkama, H.J.; Elsayed, A.; Al-Dadah, R.K.; Mahmoud, S.M.; Youssef, P.
• Is Part Of: Energy procedia. Volume 75(2015)
• Page Start: 1496
• Page End: 1501
• Publication Date: 2015-08
• Subjects: Adsorption -- Cascading -- Working Pairs -- Freezing -- Simulink ;; Power resources -- Congresses; Power resources -- Periodicals; Power resources; Conference proceedings; Periodicals; 333.7905
• DOI: 10.1016/j.egypro.2015.07.285
• Languages: English
• ISSNs: 1876-6102

Abstract

Abstract: This paper investigates the performance of various adsorbent/refrigerant working pairs in a cascaded adsorption system using Simulink/Matlab software. The cascaded system consists of two pairs of adsorber beds, condenser, evaporator and an integrated condenser/evaporator heat exchanger, forming upper and bottoming cycles. Four combinations of working pairs were investigated: ATO-Ethanol + Maxsorb/R507A, Maxorb/R134a + Maxorb/Propane and ATO/Ethanol + Maxorb/Propane and Maxorb/R134a + Maxsorb/R507A. The latter case was used for validation and as a reference point for assessing the performance of the investigated working pairs in term of COP and cooling capacity. Results showed that the Maxorb/R134a + Maxorb/Propane combination gives a higher enhancement compared to reference one with up to 30.0% and 30.1% for the COP and cooling capacity, respectively. ATO/Ethanol + Maxorb/Propane combination is the cheapest but with lower performance.