Energy Performance of Solar Assisted Desiccant Enhanced Evaporative Cooling Air conditioning System

Yi Chen, Weichen Yu, Peishi Wu, Hongxing Yang, Yimo Luo

Research output: Journal article publicationConference articleAcademic researchpeer-review

Abstract

Published by Elsevier Ltd. The desiccant enhanced evaporative cooling system is proposed as a promising energy-saving air-conditioning (A/C) scheme. It consists of hybrid liquid desiccant dehumidifier and indirect evaporative cooler. The hot and humid air is firstly dehumidified by liquid desiccant dehumidifier (LDD) and then sensibly cooled by regenerative indirect evaporative cooler (RIEC). The LDD-RIEC system operates without electricity-intensive compressor but with low-power-consumption solution pumps and water pumps. The heat captured by the solar collector is used for regenerating the desiccant solution. The solar collector model, LDD model and RIEC model were established separately to facilitate the hybrid system simulation in a closed-loop. The influence of solar collector area is analyzed. The energy saving potential of the proposed system is quantitatively evaluated with respect to the mechanical vapor compressor refrigeration (MVCR) system. The results show that both the moisture remove rate and cooling capacity improves with the increase of solar collector area. The LDD-RIEC A/C system saves 47% energy consumption compared with MVCR system in Hong Kong summer days.
Original languageEnglish
Pages (from-to)4195-4202
Number of pages8
JournalProcedia Engineering
Volume205
DOIs
Publication statusPublished - 1 Jan 2017
Event10th International Symposium on Heating, Ventilation and Air Conditioning, ISHVAC 2017 - Jinan, China
Duration: 19 Oct 201722 Oct 2017

Keywords

  • Energy saving
  • Evaporative cooling
  • Hybrid cooling system
  • Liquid desiccant dehumidifier
  • Solar collector

ASJC Scopus subject areas

  • Engineering(all)

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