Investigation of Cascading Adsorption Refrigeration System with Integrated Evaporator-Condenser Heat Exchanger Using Different Working Pairs

Dakkama H. J. , Elsayed A., Al-Dadah R. K. , Mahmoud S. M. , Youssef P.

7th International Conference on Applied Energy (ICAE), Abu Dhabi, United Arab Emirates, 28 - 31 March 2015, vol.75, pp.1496-1501 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 75
  • Doi Number: 10.1016/j.egypro.2015.07.285
  • City: Abu Dhabi
  • Country: United Arab Emirates
  • Page Numbers: pp.1496-1501
  • Keywords: Adsorption, Cascading, Working Pairs, Freezing, Simulink, PERFORMANCE, CYCLE, MASS

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. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.