a. Refrigeration: used as condenser and evaporator.
b. HVAC: intermediate heat exchangers for boilers, intermediate heat exchangers for high-rise buildings, etc.
c. Chemical industry: Soda ash industry, synthetic ammonia, alcohol fermentation, resin synthesis cooling, etc.
d. Metallurgical industry: heating or cooling of aluminate mother liquor, cooling of steelmaking process, etc.
e. Machinery industry: various quenching liquid cooling, reducer lubricating oil cooling, etc.
f. Power industry: high-voltage transformer oil cooling, generator bearing oil cooling, etc.
g. Paper industry: heat recovery in bleaching process, heating and washing slurry, etc.
h. Textile industry: cooling of viscose silk alkali aqueous solution, boiling nitrocellulose cooling, etc.
i. Food industry: fruit juice sterilization and cooling, animal and vegetable oil heating and cooling.
j. Grease process: soap-based drying under normal pressure, heating or cooling of various process liquids.
k. Central heating: waste heat district heating in thermal power plants, heating bath water.
l. Others: petroleum, medicine, ships, seawater desalination, geothermal utilization, solar energy utilization.