Title :
Development of a gas fired Vuilleumier heat pump for residential heating
Author_Institution :
Lab. for Energetics, Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
A natural gas-driven heat pump based on the Vuilleumier principle has been developed for use in single-family houses. The pump has a heat output of 7.5 kW at a coefficient of performance of 1.62 based on the lower heat content of the gas fuel. The heat pump uses helium as working fluid at 20 MPa mean pressure, and it is designed as a semihermetic unit. A crank mechanism distinguished by very small loads on the piston rings was developed. The advantages and disadvantages of the Vuilleumier principle for heat-driven heat pumps are discussed. Results of the extensive experimental work are presented. A new 20 kW Vuilleumier heat pump is briefly described
Keywords :
heat pumps; space heating; 20 MPa; 20 kW; 7.5 kW; crank mechanism; development; gas fired Vuilleumier heat pump; heat content; natural gas; piston rings; residential heating; semihermetic unit; space heating; Engine cylinders; Fluid flow; Fuels; Heat pumps; Helium; Laboratories; Natural gas; Pistons; Research and development; Temperature;
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
DOI :
10.1109/IECEC.1989.74788
