Heat pump, energy recovery method and method of curtailing power for driving compressor in the heat pump
AssigneeMitsui Engineering & Shipbuilding Co., Ltd.
InventorHajime Endou
Life of this patent
Estimating the term…
Abstract
Disclosed are a heat pump, a method of energy recovery in the heat pump and a method of curtailing the required power for driving a compressor in the heat pump, which commonly center essentially upon providing a vapor-liquid separator for separating a working fluid introduced from a condensor through an expansion valve into vapor and liquid, an expansion turbine to be driven by the vapor separated through the vapor-liquid separator, and a compressor adapted to be driven by the expansion turbine, into which turbine a cooling liquid is atomized and sprayed.
Claims8
A heat pump for delivering heat to a heat sink at elevated temperatures, comprising:
- an evaporator including a heat source for changing liquid from a working fluid into a low pressure vapor by utilizing the heat from said heat source,
- a compressor means for converting said low pressure vapor to high pressure vapor,
- a condenser, including said heat sink, for receiving said high pressure vapor from said compressor means and supplying to said heat sink heat generated by condensing said high pressure vapor into a high pressure liquid,
- an expansion valve for incompletely expanding said high pressure liquid and generating medium pressure vapor and liquid of the working fluid,
- a vapor-liquid separator for separating said vapor and liquid received from said expansion valve, and
- an expansion turbine connected to said vapor liquid separator to be driven by the vapor separated therein, said vapor being expanded in said turbine,
- said expansion turbine partially powering said compressor means.
A heat pump for delivering heat to a heat sink at elevated temperature, comprising:
- an evaporator including a heat source for changing a working fluid liquid to a low pressure vapor by utilizing heat from said heat source;
- compressor means connected to said evaporator for converting said low pressure vapor to high pressure vapor;
- a condenser, including said heat sink, for receiving said high pressure vapor from said compressor means and supplying to said heat sink heat generated by condensing said high pressure vapor;
- an expansion valve and a vapor-liquid separator for receiving condensed working fluid from said condenser and producing therefrom medium pressure vapor working fluid;
- wherein said compressor means comprises a velocity type compressor driven by said medium pressure vapor working fluid to increase density of said low pressure vapor which is then supplied to a displacement type compressor to produce said high pressure vapor provided to said condenser.
A heat pump for delivering heat to a heat sink at elevated temperature comprising:
- an evaporator including a heat source for changing a working fluid liquid to a low pressure vapor by utilizing heat from said heat source;
- compressor means connected to said evaporator for converting low pressure vapor to high pressure vapor;
- a main condenser, including said heat sink, receiving said high pressure vapor from said compressor means and supplying heat to said heat sink generated by condensing said high pressure vapor;
- an expansion valve and a vapor-liquid separator receiving condensed working fluid from said main condenser and producing therefrom medium pressure vapor and working fluid liquid, said working fluid liquid being supplied to said evaporator;
- an expansion turbine connected to drive said compressor means, said turbine receiving said medium pressure vapor from said vapor-liquid separator and expanding said medium pressure vapor to a pressure below the pressure in the evaporator,
- a second condenser receiving expanded vapor from said expansion turbine and condensing and liquefying said expanded vapor;
- and
- a pump means connected to said second condenser for supplying the condensed and liquified expanded vapor to said evaporator.
Dependencies are inferred from the claim text.