Development of an industrial high temperature heat pump with twin screw compressor.

Number: pap. 2455

Author(s) : HE Y., YANG D., CAO F., et al.


In industrial applications, 90-150? hot water needed during production processes is traditionally provided by fuel-fired boilers. The use of fuel-fired boiler has a low efficiency of energy usage and potential danger of explosion. By produced 30-60°C waste water with large amount of energy is rejected to environment directly, which causes a great energy loss and thermal pollution. Seeking for a high efficiency and safe heating equipment is essential to replace boilers used for now. High temperature heat pump (HTHP) is an ideal solution to reuse the energy in waste water and produces hot water needed. It has a higher efficiency than boilers through the use of energy contained in waste water. Water temperature provided by high temperature heat pump could reach up to 90-120°C. In this paper, an industrial high temperature heat pump with twin screw compressor was developed. For operating at high condensation and evaporation temperature safely, the twin screw compressor used in high temperature heat pump was modified, like the built-in ratio and motor capacity. Moreover, extensive experimental tests were carried out under several working scenarios. In this paper, High temperature heat pump could provide up to 95°C hot water with coefficient of performance (COP) changed from 3.5-4.3. The 1700kW heating capacity fully met the requirement in industrial heating field. Motor temperature of compressor was lower than 85°C during the test period and the modified compressor kept work stability of the high temperature heat pump.

Available documents

Format PDF

Pages: 8 p.


  • Public price

    20 €

  • Member price*

    15 €

* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).


  • Original title: Development of an industrial high temperature heat pump with twin screw compressor.
  • Record ID : 30013046
  • Languages: English
  • Source: 2014 Purdue Conferences. 15th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2014/07/14


See other articles from the proceedings (203)
See the conference proceedings