FUEL SAVINGS WITH CONVENTIONAL HOT WATER SPACE HEATING SYSTEMS BY INCORPORATING A NATURAL GAS POWERED HEAT PUMP. PRELIMINARY PROJECT: DEVELOPMENT OF HEAT PUMP TECHNOLOGY

Compression type air/water heat pumps were developed for domestic heating systems rated at 20 to 150 kW. The heat pump is driven either by a reciprocating piston or rotary piston engine modified to operate on natural gas. Particular features of natural gas engines as prime movers, such as waste heat recovery and variable speed, are stressed. Two systems suitable for heat pump operation were selected from among five different mass produced car engines and were modified to incorporate reciprocating piston compressor pairs. The refrigerants used are R 12 and R 22. Test rig data transferred to field conditions show that the fuel consumption of conventional boilers can be reduced by 50% and more by the installation of engine driven heat pumps. Pilot heat pumps based on a 1,600 cc reciprocating piston engine were built for heating four two-family houses. Pilot pump operation confirms test rig findings. The service life of rotary piston and reciprocating piston engines was investigated. The tests reveal characteristic curves for reciprocating piston engines and include exhaust composition measurements.

  • Corporate Authors:

    Ruhrgas, AG

    Essen,   Germany 

    National Aeronautics and Space Administration

    600 Independence Avenue, SW
    Washington, DC  United States  20546
  • Authors:
    • Vanheyden, L
    • Evertz, E
  • Publication Date: 1980-12

Media Info

  • Pagination: 227 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00343847
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: BMFT-FB-T-80-143, ISSN-0340-7608
  • Files: TRIS
  • Created Date: Nov 23 1982 12:00AM