Accession Number : ADD016573

Title :   Malone-Brayton Cycle Engine/Heat Pump.

Descriptive Note : Patent, Filed 28 Sep 93, patented 12 Jul 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Gilmour, Thomas A

Report Date : 12 Jul 1994

Pagination or Media Count : 9

Abstract : A machine, such as a heat pump, and having an all liquid heat exchange fluid, operates over a more nearly ideal thermodynamic cycle by adjustment of the proportionality of the volumetric capacities of a compressor and an expander to approximate the proportionality of the densities of the liquid heat exchange fluid at the chosen working pressures. Preferred forms of a unit including both the compressor and the expander on a common shaft employs difference in axial lengths of rotary pumps of the gear or vane type to achieve the adjustment of volumetric capacity. Adjustment of the heat pump system for differing heat sink conditions preferably employs variable compression ratio pumps.

Descriptors :   *HEAT PUMPS, *THERMODYNAMIC CYCLES, *PATENTS, *HEAT EXCHANGERS, COMPRESSION RATIO, COMPRESSORS, DENSITY, FLUIDS, GEARS, HEAT SINKS, PRESSURE, ROTARY PUMPS, THERMODYNAMICS, SHAFTS(MACHINE ELEMENTS), ENTHALPY, BRAYTON CYCLE

Subject Categories : Air Condition, Heating, Lighting & Ventilating
      Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE