US 11,441,823 B2 · Adsorption heat pump and method for operating an adsorption heat pump

Abstract

The invention relates to an adsorption heat pump, having an adsorber device, comprising a solid adsorbent, an evaporator, a condenser or an evaporator/condenser and an operating medium in an operating circuit, wherein the operating circuit has a gaseous half-circuit between the evaporator, the adsorber device and the condenser or the evaporator/condenser and the adsorber device, in which gaseous half-circuit the operating medium is gaseous, and a liquid half-circuit which is configured between the evaporator and the condenser and in which the operating medium is liquid, wherein the liquid half-circuit contains a liquid functional medium which can be mixed with the operating medium and lowers the vapor pressure of the operating medium, with a vapor pressure at 25° C. of below 0.2 mbar. In a method for operating an absorption heat pump with an operating circuit comprising an adsorber, an evaporator and a condenser or an evaporator/condenser and an operating medium which is circulated between the adsorber, the evaporator and the condenser, the operating medium is mixed, when running through the operating circuit, within the liquid half-circuit with a liquid functional medium which lowers the vapor pressure, and the operating medium is separated from the functional medium before the transfer into the gaseous half-circuit of the operating circuit.

Claims21

Dependent claims

An adsorption heat pump, which comprises:

an adsorber device, the adsorber device having a solid adsorbent,
a first medium and a second medium, the first medium being an operating medium, the second medium being a liquid functional medium, wherein the first medium and the second medium are different,
an evaporator and a condenser,
an operating circuit containing the operating medium,
a mixture including the first medium and the second medium,
wherein the operating circuit has a gaseous half-circuit between the evaporator, the adsorber device and the condenser, in which the operating medium is in a gaseous phase,
wherein the operating circuit has a liquid half-circuit which is configured between the evaporator and condenser, in which the operating medium is in a liquid phase,
wherein the liquid half-circuit contains the liquid functional medium,
wherein the liquid half circuit at least transiently contains at least some of the mixture,
wherein the operating medium has a first vapor pressure and wherein the operating medium in the mixture has a second vapor pressure, the second vapor pressure being less than the first vapor pressure;
and
wherein the liquid functional medium is an ionic liquid.

9 more elements

A method for operating an adsorption heat pump, the adsorption heat pump comprising an adsorber device, an operating circuit, the operating circuit having a liquid half-circuit and a gaseous half-circuit, an evaporator and a condenser, a first medium and a second medium, the first medium being an operating medium, the second medium being a liquid functional medium, wherein the first medium and the second medium are different, wherein the liquid functional medium is an ionic liquid, wherein the operating medium is circulated between the adsorber, the evaporator and the condenser, the method comprising the steps of:

mixing the operating medium with the liquid functional medium within the liquid half-circuit, the mixing of the operating medium with the liquid functional medium lowering the vapor pressure of the operating medium,
transferring the operating medium from the liquid half-circuit to the gaseous half-circuit, wherein
the operating medium is separated from the liquid functional medium during the transfer into the gaseous half-circuit.

Dependencies are inferred from the claim text.

Adsorption heat pump and method for operating an adsorption heat pump

Life of this patent

Adsorption heat pump and method for operating an adsorption heat pump

Life of this patent

Abstract

Claims21