Share

Experimental study of a heat pump dryer with dual models of single stage and cascade cycles.

Number: pap. L37

Author(s) : SHEN J., GUO T., GAO Z., et al.

Summary

This paper develops a single stage/cascade double mode heat pump drying system, which can adapt to the variation of ambient temperature and then satisfy the drying system’s heating demand. Meanwhile the maximum temperature of dry air can be elevated using cyclic heating. Moreover, a prototype of the single stage/cascade double mode heat pump was developed and an experimental study was carried out. On the basis of experimental results, the performance variation of the heat pump at different mode and operating condition was analyzed. According to the results, it can be concluded that the maximum dry air temperature of cascade mode was higher than that of single stage with the same environment temperature and its difference decreased with the environment temperature. At the same environment temperature, both the heating capacity and power consumption of cascade mode were larger than single stage and the difference of power consumption increased with the environment temperature. With the increase of environment temperature, there existed a maximum COP of cascade mode while the COP of single stage kept increasing. The pressure ratio of the high stage compressor varied greatly at different operating mode and its selection should be reasonable.

Available documents

Format PDF

Pages: 12

Available

  • Public price

    20 €

  • Member price*

    15 €

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

Details

  • Original title: Experimental study of a heat pump dryer with dual models of single stage and cascade cycles.
  • Record ID : 30022057
  • Languages: English
  • Source: 8th international conference on compressors and refrigeration, 2017.
  • Publication date: 2017/07/20

Links


See other articles from the proceedings (97)
See the conference proceedings

Indexing