The present disclosure provides a combined cycle power plant (10) comprising a gas turbine (26), a heat-recovery steam generator (34) receiving exhaust gas (33) from the gas turbine (26) for producing steam (35), a steam turbine (32) receiving and expanding the steam (35) from the heat-recovery steam generator (34) to produce expanded steam (36), an air-cooled condenser (50) receiving the expanded steam (36) from the steam turbine (32), and an absorption refrigeration system (40) receiving a reduced temperature exhaust gas (38) from the heat-recovery steam generator (34). The absorption refrigeration system (40) is connected to the air-cooled condenser (50) to selectively extract heat from air (55) entering the air-cooled condenser (50).

In one aspect, a refrigeration system is provided. The refrigeration system includes a refrigeration circuit configured to condition an air supply, a subcooling circuit configured to cool the refrigeration circuit, the subcooling circuit including a subcooling condenser, a subcooling heat exchanger, and at least one adsorption bed, and a heat generation system thermally coupled to the subcooling circuit.

In one aspect, a refrigeration system is provided. The refrigeration system includes a refrigeration circuit configured to condition an air supply, a subcooling circuit configured to cool the refrigeration circuit, the subcooling circuit including a subcooling condenser, a subcooling heat exchanger, and at least one adsorption bed, and a heat generation system thermally coupled to the subcooling circuit.

Method of recovering thermal energy from a motorized heat pump (1) comprising a step of: removal of the heat in the condenser (4), removal of the heat in the engine recuperator (11), removal of the heat in the exhaust recuperator (17), restoration of the heat removed in a heat restorer (21) that the heat transfer loop (18) passes through,
the method being capable of: determining the power of the combustion in the heat engine (7), determining the refrigeration power available in the evaporator (3), modulating the speed of rotation of the heat engine (7) such that the refrigeration power is numerically superior to the combustion power.

Method of recovering thermal energy from a motorized heat pump (1) comprising a step of: removal of the heat in the condenser (4), removal of the heat in the engine recuperator (11), removal of the heat in the exhaust recuperator (17), restoration of the heat removed in a heat restorer (21) that the heat transfer loop (18) passes through,
the method being capable of: determining the power of the combustion in the heat engine (7), determining the refrigeration power available in the evaporator (3), modulating the speed of rotation of the heat engine (7) such that the refrigeration power is numerically superior to the combustion power.

According to an embodiment of the present disclosure, the gas engine heat pump includes: an engine including an ignition plug for burning a mixture of air and fuel; a compressor connected to the engine, for compressing refrigerant by an operation of the engine; a mixer for mixing the air and the fuel and supplying the mixture to the engine; a zero governor having a valve, for regulating the amount of fuel supply to the mixer; a throttle valve disposed between the mixer and the engine, for regulating the flow of the mixture entering the engine; and a controller, wherein the controller checks a current number of revolutions of the engine upon receiving a command to stop running the engine, changes a target number of revolutions of the engine so that the current number of revolutions of the engine reaches a first reference number of revolutions, if the current number of revolutions of the engine exceeds the first reference number of revolutions, controls the opening degree of the valve included in the zero governor in response to the change in the target number of revolutions of the engine, and controls the ignition plug to stop igniting if the current number of revolutions of the engine reaches a second reference number of revolutions which is lower than the first reference number of revolutions.

A gas engine heat pump and a method of operating the same are provided. According to an embodiment of the present disclosure, the gas engine heat pump includes: an engine for burning a mixture of air and fuel; an exhaust gas compressor for compressing exhaust gases coming from the engine; a buffer tank for storing the exhaust gases compressed by the exhaust gas compressor; an exhaust gas valve disposed between the buffer tank and an intake manifold of the engine; an exhaust gas spray nozzle for spraying the exhaust gases stored in the buffer tank into a cylinder of the engine; an exhaust gas sensor for acquiring information on the exhaust gases coming from the engine; and a controller, wherein the controller controls the operation of at least one of the exhaust gas valve and the exhaust gas spray nozzle, based on the information on the exhaust gases acquired by the exhaust gas sensor. Other various embodiments are possible.

A transport refrigeration system includes a transport refrigeration unit having a refrigerant circuit through which a refrigerant is circulated in heat exchange relationship with air drawn from a cargo box, a fuel-fired engine for powering the refrigeration unit and having an exhaust system through which exhaust gases generated by the engine are discharged and an engine coolant circuit, an engine exhaust gases to engine coolant heat exchanger, and an engine coolant circuit to refrigeration unit heat exchanger.

A transport refrigeration system includes a transport refrigeration unit having a refrigerant circuit through which a refrigerant is circulated in heat exchange relationship with air drawn from a cargo box, a fuel-fired engine for powering the refrigeration unit and having an exhaust system through which exhaust gases generated by the engine are discharged and an engine coolant circuit, an engine exhaust gases to engine coolant heat exchanger, and an engine coolant circuit to refrigeration unit heat exchanger.

An air conditioner includes a battery temperature adjustment device which adjusts the temperature of a battery and has a refrigerant-heat medium heat exchanger to exchange heat between a refrigerant and a heat medium. A controller executes a first heating/battery cooling mode to let the refrigerant discharged from a compressor radiate heat in a radiator, decompress the refrigerant, and then let the refrigerant absorb heat in an outdoor heat exchanger and the refrigerant-heat medium heat exchanger, and a second heating/battery cooling mode to let the refrigerant discharged from the compressor radiate heat in the radiator and the outdoor heat exchanger, decompress the refrigerant, and then let the refrigerant absorb heat in the refrigerant-heat medium heat exchanger.