... intergrated with pump, valve,pipe, pressure and flow control elements to use steam instantly heat mass ... use and supply for water for central heating system. typeCirculating water(T/H)heating load(MW)Heatingarea ... pumps.2. Commercial, civil heating and hot water supply system: such as living quarters, office buildings, hotels, bath ... high sideReturnLowLowLowfast steam-water two phase flow heat exchanger