Project Title:

Heat Pump for Space Thermal Bus

09.12-3200
NAS5-30867
Heat Pump for Space Thermal Bus
Foster-Miller, Inc.
	350 Second Avenue
	Waltham, MA 02154-1196
		Andrew C. Harvey
(617-890-3200)

Abstract:

	Various space systems will require heat pumps to lift heat to a common thermal bus
and radiator system, e.g., a moon station with a relatively high radiator temperature.
A small, high-pressure compressor that avoids the problem of lubricant in the working
fluid loop is needed. Phase I will demonstrate a prototype of a compact, high-efficiency,
long-life, dry ammonia compressor at high head-pressure. In addition, system trade-offs
will be reviewed for probable applications and design refinement for zero-G demonstration.

Potential Commercial Application:

Potential Commercial Applications: A high-pressure, dry-head compressor will permit
commercial refrigeration with benign-to-ozone refrigerants for which compatible oils
do not yet exist.