The paper presents an attempt to enhance unit performance of an existing 1274 m3/h Multi Stage Flash (MSF) desalination plant through sensible heat recovery from hot distillate water at the MSF stages to warm up the make-up seawater using internal heat exchange. The extraction of the distillate from stages could increase water production by 2% and reduces steam consumption by 5%. In addition, a reduction of seawater feed flow which also results in a drop of pump power consumption were observed. Environmentally, the modification could decrease CO2emissions by 2300 tonnes annually.
Al-Weshahi, M. A., Tian, G., & Anderson, A. (2014). Performance enhancement of MSF desalination by recovering stage heat from distillate water using internal heat exchanger. In Energy Procedia (Vol. 61, pp. 381–384). Elsevier Ltd. https://doi.org/10.1016/j.egypro.2014.11.1130