F - Mech Eng,Light,Heat,Weapons – 25 – B
Patent
F - Mech Eng,Light,Heat,Weapons
25
B
62/25
F25B 29/00 (2006.01)
Patent
CA 1126523
COMBINED ENGINE COOLING SYSTEM AND WASTE-HEAT DRIVEN HEAT PUMP ABSTRACT OF THE DISCLOSURE An improved engine cooling system is combined with a jet- driven heat pump system for utilizing otherwise wasted heat from an engine to produce refrigeration and heating of cabin, charge air and other media without requiring additional shaft power from the engine. In a closed cycle, vaporized refrigerant fluid is con- veyed via jet ejectors from the engine cooling jacket at a high pressure and temperature and from refrigerant evaporators at low pressures and temperatures to a radiator/condenser at an inter- mediate pressure and temperature. The greater portion of condensed refrigerant fluid is pumped back to the engine (boiler) and the balance is throttled into the evaporators (heat exchangers) to pro- duce an evaporative cooling effect. The vapor resulting therefrom is evacuated by the ejectors and returned to the condenser/radiator. In the cooling mode, the engine jacket constitutes the boiler in a Rankine cycle power circuit providing motive fluid power for the jet vapor compressor in a reverse Rankine cycle refrigeration cir- cuit incorporating the heat exchangers as cooling coils. In a heating mode the high pressure vapor is conveyed directly from the engine to the heat exchangers which then serve as condensers to provide condensation heating effects, the partially condensed re- frigerant being further condensed in the radiator.
353679
Daeco Fuels And Engineering Company
Gowling Lafleur Henderson Llp
LandOfFree
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