In some industries, such as petrochemical, steel, paper making, pharmaceutical, rice mills, processing industries, etc., there is a lot of hot water, steam or gas generated in production process. Usually, all these heat resources will be discharged or cooled. It is not only polluting the atmosphere but also waste the latent heat.

Fossil fuel reserves depleted rapidly. There are many concerns about nuclear safety. How to use renewable energy, such as geothermal, biomass, solar energy source effectively?

High-pressure transmit and low-pressure use is the key features of steam. It mostly equips PRV (Pressure Reducing Valve) in use site if there is heat demand in following process. However, the energy loss of the pressure is also the economic loss.

Today, these waste heat sources are all useful for screw expander generator. The screw expander provides a renewable power solution by converting low, medium and high temperature heat into electrical energy. It can achieve energy saving and environment protection. Undoubtedly, it is an efficient, clean and reliable way to achieve energy saving and environment protection.