Waste heat operated hybrid (MEDAD) desalination plant: An experimental investigation

Muhammad Wakil Shahzad, Kyaw Thu, Jayaprakash Saththasivam, Won Gee Chun, Kim Choon Ng

研究成果: Contribution to conferencePaper査読


This paper presents an advanced desalination cycle called "MEDAD" desalination which is a hybrid of the traditional multi-effect distillation (MED) and the newly-patented adsorption cycle (AD). The combined cycles break the operating regime of conventional MED system and allow some stages to operate below ambient temperature, as low as 5°C in contrast to the conventional MED: The MEDAD cycle results in a quantum increase of distillate production at the same top-brine condition. Being lower than the ambient temperature for the bottom stages of hybrid, ambient energy can now be scavenged by the MED processes whilst the AD cycle is powered by low temperature waste heat from exhaust or renewable sources. In this paper, we present the experiments of a 3-stage MED and MEDAD plants that were fabricated and installed in the air-conditioning laboratory of the National University of Singapore. These plants have been tested at assorted heat source temperatures from 15°C to 70°C. All system states are monitored including the stages temperature and distillate production. It is observed that the synergetic matching of MEDAD cycle led to a quantum increase in distillate production, up to 2.5 to 3 folds vis-a-vis to a conventional MED of the same rating.

出版ステータス出版済み - 2014
イベント7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014 - Jeju Island, 大韓民国
継続期間: 5 18 20145 21 2014


その他7th Asian Conference on Refrigeration and Air Conditioning, ACRA 2014
CityJeju Island

All Science Journal Classification (ASJC) codes

  • 電子工学および電気工学
  • 凝縮系物理学
  • 制御およびシステム工学
  • 機械工学


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