A valve for an adsorption heat pump may include a first channel, a second channel, a third channel, a first valve unit, and a second valve unit. The first valve unit may include a first valve body and a first valve seat and may be constructed and arranged to open and close the first channel. A second valve unit may include a second valve body and a second valve seat and may be constructed and arranged to open and close the second channel. A spring element may be pre-stressed between the first valve body and the second valve body and may be constructed and arranged to provide a first closing force upon the first valve body in a first direction of the first valve seat and a second closing force upon the second valve body in a second direction of the second valve seat. An actuating drive may include a control rod and may extend through the first valve body and the second valve body. A first carrier element and a second carrier element may each be secured to the control rod. The first valve body, the second valve body, and the spring element may be positioned between the first carrier element and the second carrier element. The valve may be constructed and arranged to move between a closed position, a first open position, a second open position, and at least one intermediate position. In the closed position, the first valve unit and the second valve unit may be closed. In the first open position, the first valve unit may be fully open. In the second open position, the second valve unit may be fully open. In the at least one intermediate position, one of the first valve unit or the second valve unit may be partially open. The actuating drive may be constructed and arranged to hold the valve in the closed position, the first open position, the second open position, and the at least one intermediate position without power. The actuating drive may include a stepping motor and a gear unit. The stepping motor and the gear unit may be constructed and arranged to hold the valve in the closed position, the first open position, the second open position, and the at least one intermediate position via a currentless holding moment. The first valve unit and the second valve unit may include a valve opening characteristic of a flow coefficient dependent on an adjustment path which may not be linear. The valve opening characteristic may include at least one flat region.

An adsorption heat pump may include a high temperature circuit for a high temperature heat transfer medium including a high temperature flow pipe and a high temperature return pipe, and a medium temperature circuit for a medium temperature heat transfer medium including a medium temperature flow pipe and a medium temperature return pipe. At least one sorption module may be in operative communication with the high temperature circuit and the medium temperature circuit. The at least one sorption module may include a sorption zone, a phase change zone, a working medium between the sorption zone and the phase change zone, a sorbent which may absorb and desorb the working medium, a first flow channel in thermal contact with the sorbent, and a second flow channel in thermal contact with the phase change zone. At least a first valve and a second valve may be in operative communication with the sorption module and the high temperature circuit and the medium temperature circuit. The at least first valve and second valve may be at least one of controlled and regulated independently from each other. The first valve may connect the high temperature flow pipe and the medium temperature flow pipe to the first flow channel. The second valve may connect the high temperature return pipe and the medium temperature return pipe to the first flow channel. The first valve and the second valve may include a first port, a second port, and a third port. A first fluid connection may be between the first port and the third port and a second fluid connection may be between the second port and the third port. The first fluid connection and the second fluid connection may each be selectively opened and closed. The at least first valve and second valve may be constructed and arranged to move between a closed position, a first open position, a second open position, and at least one intermediate position. In the closed position, the first fluid connection and the second fluid connection may be closed. In the first open position the first fluid connection may be open and the second fluid connection may be closed. In the second open position, the second fluid connection may be open and the first fluid connection may be closed. When the at least first valve and second valve are in the at least one intermediate position, one of the first fluid connection or the second fluid connection may be partially open and the other of the first fluid connection or the second fluid connection may be closed.

The solar-powered LiBr-water absorption air conditioning system using hybrid storage includes one or more solar collectors generating heat energy to drive the system. The solar collector communicates with a generator to heat an aqueous LiBr solution and release refrigerant through vaporization. The refrigerant feeds into a condenser to form a refrigerant condensate. The condensate feeds into an evaporator, which throttles the refrigerant and causes flash vaporization, resulting in cooling discharged into a load. The refrigerant from the evaporator feeds into an absorber containing a weak LiBr-water mixture from the generator to facilitate absorption of the refrigerant. A pump feeds the resultant aqueous LiBr solution back to the generator for another cycle. The hybrid storage includes a combination of heat storage tank, refrigerant storage tank, and/or a cold water tank coupled to the generator, condenser, and the evaporator to supplement driving or additional cooling during nighttime for continuous daily operation.

A cooling system is disclosed so that an operator cabin can be cooled even if the engine is off. An accumulator can be used to store high-pressure refrigerant until its release. When the compressor is off, the accumulator can release the high pressure refrigerant through the pressure reducer and to the evaporator where heat in the operator cabin can be removed by the refrigerant. An absorption bed with activated carbon can be used to adsorb the refrigerant from the evaporator in order to create a pressure gradient in A/C system. The refrigerant in the accumulator can also be used to subcool a refrigerant in the condenser through a heat exchanger. This allows the operator cabin to be cooled faster up on engine start up. The adsorption bed can also be used to create a pressure gradient in the cooling system.

A refrigerating cycle apparatus includes an evaporator, a compressor, a condenser, a feeding channel, a main circuit that circulates a refrigerant including fluid whose saturated vapor pressure at ordinary temperature is a negative pressure as a main component, a heat absorption circuit including a heat absorption heat exchanger, a heat release circuit including a heat release heat exchanger, an internal heat exchanger that allows indirect heat exchange between the fluid flowing through the heat absorption circuit and the fluid flowing through the heat release circuit, at least one of a heat absorption bypass channel and a heat release bypass channel, and at least one of a flow rate adjustment mechanism for heat absorption that adjusts a flow rate of the fluid flowing through the heat absorption bypass channel and a flow rate adjustment mechanism for heat release that adjusts a flow rate of the fluid flowing through the heat release bypass channel.

The solar-powered LiBr-water absorption air conditioning system using hybrid storage includes one or more solar collectors generating heat energy to drive the system. The solar collector communicates with a generator to heat an aqueous LiBr solution and release refrigerant through vaporization. The refrigerant feeds into a condenser to form a refrigerant condensate. The condensate feeds into an evaporator, which throttles the refrigerant and causes flash vaporization, resulting in cooling discharged into a load. The refrigerant from the evaporator feeds into an absorber containing a weak LiBr-water mixture from the generator to facilitate absorption of the refrigerant. A pump feeds the resultant aqueous LiBr solution back to the generator for another cycle. The hybrid storage includes a combination of heat storage tank, refrigerant storage tank, and/or a cold water tank coupled to the generator, condenser, and the evaporator to supplement driving or additional cooling during nighttime for continuous daily operation.

A cooling system is disclosed so that an operator cabin can be cooled even if the engine is off. An accumulator can be used to store high-pressure refrigerant until its release. When the compressor is off, the accumulator can release the high pressure refrigerant through the pressure reducer and to the evaporator where heat in the operator cabin can be removed by the refrigerant. An absorption bed with activated carbon can be used to adsorb the refrigerant from the evaporator in order to create a pressure gradient in A/C system. The refrigerant in the accumulator can also be used to subcool a refrigerant in the condenser through a heat exchanger. This allows the operator cabin to be cooled faster up on engine start up. The adsorption bed can also be used to create a pressure gradient in the cooling system.

The present disclosure discloses a multi-energy coupled cooling/heating system for buildings in a long-term cooling region, including a multi-level management unit for heat sources, a solar energy heat collection unit, a lithium bromide absorptive refrigeration unit, a gas heat complementing unit, a ground source heat pump cooling/heating unit, and an indirect evaporative cooling waste heat recovery unit; the multi-level management unit for heat sources is connected to the solar energy heat collection unit, the lithium bromide absorptive refrigeration unit, the gas heat complementing unit, and the ground source heat pump cooling/heating unit; the ground source heat pump cooling/heating unit is connected to the indirect evaporative cooling waste heat recovery unit. The present disclosure adopts double-water tank structure, designs based on stratification principle, so as to achieve heat source classification management.

The present disclosure discloses a multi-energy coupled cooling/heating system for buildings in a long-term cooling region, including a multi-level management unit for heat sources, a solar energy heat collection unit, a lithium bromide absorptive refrigeration unit, a gas heat complementing unit, a ground source heat pump cooling/heating unit, and an indirect evaporative cooling waste heat recovery unit; the multi-level management unit for heat sources is connected to the solar energy heat collection unit, the lithium bromide absorptive refrigeration unit, the gas heat complementing unit, and the ground source heat pump cooling/heating unit; the ground source heat pump cooling/heating unit is connected to the indirect evaporative cooling waste heat recovery unit. The present disclosure adopts double-water tank structure, designs based on stratification principle, so as to achieve heat source classification management.

A multi-energy coupled cooling/heating system, including a multi-level management unit for heat sources, a solar energy heat collection unit, a lithium bromide absorptive refrigeration unit, a gas heat complementing unit, a ground source heat pump cooling/heating unit, and an indirect evaporative cooling waste heat recovery unit; the multi-level management unit for heat sources is connected to the solar energy heat collection unit, the lithium bromide absorptive refrigeration unit, the gas heat complementing unit, and the ground source heat pump cooling/heating unit, the ground source heat pump cooling/heating unit is connected to the indirect evaporative cooling waste heat recovery unit.