US 11,619,426 B2Granted

Adsorption-based heat pump

AssigneeEnersion Inc.

InventorsHanif Montazeri, Jingyuan Hou, Arshan Singh, Bahman Lashkari, Vignesh Krishnamurthy

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Abstract

Disclosed is an adsorption-based heat pump useful for refrigeration and cooling/heating for applications such as HVACs and chillers. Adsorption is a surface phenomenon where a solid substance (adsorbent) attracts molecules of a gas or solution (refrigerant or adsorbate) on its surface. The latent heat of the adsorbate provides the heating/cooling effect. The novel adsorption heat pump enhances heat and/or mass transfer to and from the adsorbate. One embodiment comprises at least one evaporator, at least one desorber (adsorbent heating apparatus), at least one adsorbent cooling apparatus and at least one condenser. The embodiment employs different techniques to enhance heat and/or mass transfer.

Claims7

Dependent claims

An adsorption-based heat pump comprising:

a condenser to liquefy a refrigerant;
a cooling apparatus for cooling an adsorbent;
an evaporator for evaporative cooling using the adsorbent;
a desorber for separating the adsorbent and the refrigerant;
a first valve between the desorber and the cooling apparatus to allow the absorbent into the cooling apparatus after the absorbent has been separated from the refrigerant by the desorber;
and
a second valve between the evaporator and the desorber to allow saturated absorbent into the desorber,
wherein the desorber comprises a first screw conveyor and a second screw conveyor, the first screw conveyor receiving the saturated adsorbent and transporting the saturated adsorbent to the second screw conveyor, the second screw conveyor transporting the saturated adsorbent while the saturated adsorbent is being heated to separate the adsorbent from the refrigerant such that the second screw conveyor delivers the adsorbent back to the cooling apparatus and delivers the refrigerant back to the condenser.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/976,606Filed 7 Mar 2019 · us provisional application
Priority: 7 Mar 2018
Published: US 2021/0048232 A118 Feb 2021
Granted: 4 Apr 2023
Term ends: Not estimatedThe source records don’t support an estimate.

Classification12 codes

F25B 30/04
Heat pumps: of the sorption type
F25B 17/08
Sorption machines, plants or systems, operating intermittently, e.g. absorption or adsorption type: the absorbent or adsorbent being a solid, e.g.…
F25B 35/04
Boiler-absorbers, i.e. boilers usable for absorption or adsorption: using a solid as sorbent
F25B 39/026
Evaporators: specially adapted for sorption type systems