Combined Power, cooling and desalination using natural refrigerant powered by low-grade heat source.

Number: pap. 2538

Author(s) : GOVINDASAMY P. K., RAJAGOPAL S., CORONAS A., et al.

Summary

This paper presents and discusses the combined power, cooling and desalination (CPCD) outputs operated through sustainable heat sources. The cycle, configured by heat rejection from ammonia absorption-based combined power and cycle system, is utilized for Multi Effect Distillation (MED) with Multi Stage Flash (MSF) desalination sub cycle. The triple output system operates in three different modes; power only to cooling only and cooling with power output and always with desalination output. The influence of heat source temperature, evaporator temperature and split ratio on the cycle useful outputs along with performance indicators was investigated. The proposed cycle configurations can operate by heat source temperatures as low as 125°C at -10°C evaporator temperature. Both effective first law and exergy efficiencies increase with the split ratio of refrigerant vapour mass flow rate, and reach maxima of 68.3% and 21.0% at the cooling alone condition. These grid-independent cycles are therefore suitable to provide energy intensive triple outputs using sustainable energy sources such as solar thermal, waste heat or biomass.

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Pages: 10

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Details

  • Original title: Combined Power, cooling and desalination using natural refrigerant powered by low-grade heat source.
  • Record ID : 30024602
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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