Share

DRYING BY CASCADED HEAT PUMPS.

Author(s) : PERRY E. J.

Type of article: Periodical article

Summary

SINCE THE COP OF A HEAT PUMP IS DEPENDENT UPON THE TEMPERATURE STRETCH OVER WHICH ENERGY IS ABSORBED AND REJECTED, SINGLE STAGE REFRIGERATION PLANT TENDS TO BECOME INEFFICIENT, THUS MAKING THE ECONOMICS POOR. TO IMPROVE THE PERFORMANCE OF HEAT PUMPS FOR DRYING OPERATIONS, 2 SYSTEM MODIFICATIONS CAN BE INCORPORATED. THESE ARE (I) SUB-COOLING OF THE REFRIGERANT AND (II) USE OF CASCADE REFRIGERATION SYSTEMS TO REDUCE THE TEMPERATURE STRETCH OVER WHICH THE ABSORBED ENERGY HAS TO BE DISSIPATED. AN ADDITIONAL INCREASE IN THE COP CAN BE OBTAINED BY USING ENGINE-DRIVEN COMPRESSORS BY UTILIZING THE ENGINE WASTE HEAT FOR RAISING THE TEMPERATURE OF THE DRYING AIR.

Details

  • Original title: DRYING BY CASCADED HEAT PUMPS.
  • Record ID : 1982-0985
  • Languages: English
  • Source: Inst. Refrig., Adv. Proof - 8 p.; 15 fig.; 4 tabl.
  • Publication date: 1981
  • Document available for consultation in the library of the IIR headquarters only.

Links


See the source

Indexing