A solar environmental control system includes a solar powered apparatus and a heat transfer apparatus. The solar collection apparatus includes a solar collector for absorbing solar energy, a heat storage medium, and a generator. A heat transfer fluid circulates between the solar collector, the heat storage medium, and the generator.

The invention relates to an adsorption refrigerator or an adsorption heat pump as well as a method for the operation thereof. The adsorption refrigerator or adsorption heat pump comprises at least one module having an adsorber, a mixing evaporator and a mixing condenser. It is characterized in that the adsorber together with the mixing evaporator and the mixing condenser within the module is structurally combined and contained within a common, preferably thermally insulated adsorber container for accommodating the adsorber and having an adsorber section which can be thermally contacted externally, and having a mixing section thermally insulated externally for accommodating the mixing evaporator and the mixing condenser, wherein the mixing section is formed so that a refrigerant can flow through it, so that the refrigerant, after having flown through the mixing section, can be supplied to an external heat exchanger that is separated from the module, wherein the mixing section is arranged to enable the refrigerant to be evaporated and/or condensed.

The invention relates to a module for a heat pump, comprising an adsorption-desorption region, wherein in the region a bundle of pipes through which fluid can flow is arranged and a housing encloses the pipe bundle and a movable working medium in a sealing manner, wherein a supporting structure forms a mechanical support of a wall of the housing against the action of an external pressure.

An absorption chiller may include an absorbent circuit in which a liquid absorbent circulates and a working medium circuit in which a liquid working medium circulates. The absorbent circuit may include an absorber and a desorber. The working medium circuit may include an evaporator and a condenser. The absorption chiller may also include a low pressure membrane arrangement and a high pressure membrane arrangement each being permeable to a working medium vapour, impermeable to the liquid working medium and the liquid absorbent, and arranged between the evaporator and the absorber such that it is in contact with the working medium and the absorbent. At least one of the low pressure membrane arrangement and the high pressure membrane arrangement may include a working medium membrane and an absorbent membrane.

An absorption refrigeration and air conditioning device capable of controlling temperature and/or the humidity of enclosed spaces particularly useful in maritime applications and improving fuel economy of internal combustion engines is provided.

A thermodynamic power generation system for generating power from a low-grade or mid-grade heat source includes a turbine coupled to an electrical generator and a closed circuit fluid flow path for a refrigerant. The system also includes an adsorption thermal compressor positioned in the flow path, the adsorption thermal compressor comprising an inlet buffer vessel, an outlet buffer vessel, and two or more fluidized adsorber beds, each containing a sorbent. The fluidized adsorber beds are arranged in parallel. The system also includes a refrigerant configured to circulate within the fluid flow path, the turbine, and the adsorption thermal compressor, for driving the turbine. The refrigerant is configured to be adsorbed and desorbed by the sorbent in a vapor phase without condensing into a liquid phase. The two or more fluidized adsorber beds each cycle between an adsorption phase and a desorption phase.

An absorption refrigeration and air conditioning device capable of controlling temperature and/or the humidity of enclosed spaces particularly useful in maritime applications and improving fuel economy of internal combustion engines is provided.

A method operates an absorption heat pump system, specifically the flow of hydronic cooling fluid through the condenser during system start-ups, or when the cooling fluid temperature is low. To minimize the time for an absorption heat pump to reach full cooling or heating capacity, it is desirable for the high side pressure to increase as fast as possible, and the low side pressure to decrease as fast as possible. Since the high side pressure is a function of the temperature of the refrigerant exiting the condenser, if the condenser cooling fluid temperature is low, the corresponding high side pressure will be low, which may not permit adequate working fluid flow rates from the high pressure side of the system to the low pressure side.

An absorption heat pump having a generator, a heat source to heat the generator to drive coolant vapor out of solution, a condenser for cooling the coolant vapor and an expansion valve that expand the coolant fluid as well as an evaporator for at least partial evaporation of the expanded coolant fluid against a medium which is connected to at least one absorber which absorbs the expanded coolant fluid. A hot gas line which branches off from a line for coolant vapor upstream of the condenser and is fluid-connected to the evaporator such that it bypasses the condenser and the expansion valve, a defrosting valve being provided in the hot gas line, by means of which the flow of coolant vapor through the hot gas line can be controlled. The absorption heat pump is operated in a cyclic circulation process.

An absorber unit 1a includes a first absorber 13a and a second absorber 13b. The first absorber 13a includes a first heat transfer tube group 11a and a first dripper 12a. The second absorber 13b includes a second heat transfer tube group 11b and a second dripper 12b. The first heat transfer tube group 11a has a first end portion 11m, and the second heat transfer tube group 11b has a second end portion 11n. In the first end portion 11m and the second end portion 11n, a shortest distance D1 is larger than a shortest distance D2. The shortest distance D1 is a shortest distance, in a gravity direction, between the outer surfaces of a specific pair of heat transfer tubes 10 adjacent to each other in the first end portion 11m. The shortest distance D2 is a shortest distance, in the gravity direction, between the outer surfaces of a pair of heat transfer tubes 10 in the second end portion 11n that form rows corresponding to the specific pair of heat transfer tubes 10.