Air-conditioning method and device

Patent metadata

Field	Value
Publication number	US-11609000-B2
Application number	US-201816618767-A
Country	US
Kind code	B2
Filing date	May 30, 2018
Priority date	Jun 2, 2017
Publication date	Mar 21, 2023
Grant date	Mar 21, 2023

Abstract

The invention relates to an air conditioning apparatus including a first absorptive heat exchanger having sorption channels in at least one flow direction, a method for conditioning fluids, in particular for cooling and/or drying a stream of air, an adsorptive air-air cross-flow heat exchanger, and an outer wall element including an integrated air conditioning apparatus.

First claim

The invention claimed is:

1. An absorptive air-air cross-flow heat exchanger, wherein the channels of the heat exchanger have no internal fins, wherein the heat exchanger has sorption channels having a channel width of from 0.5 to 2 mm, the sorption channels coated with an adsorption material in at least one flow direction, the adsorption material comprising water-adsorbing metal-organic frameworks, wherein a coating thickness of the adsorption material in the sorption channels is from 10 to 200 μm, and heat exchanger channels in at least one other flow direction, wherein an amount of an adsorption material coated in the heat exchanger channels is less than 5% of an amount of the adsorption material coated in the sorption channels.

2. The absorptive air-air cross-flow heat exchanger according to claim 1 , wherein the heat exchanger channels have no adsorption material.

3. The absorptive air-air cross-flow heat exchanger according to claim 1 , wherein the channel width of the sorption channels is from 0.7 to 1.5 mm.

4. The absorptive air-air cross-flow heat exchanger according to claim 1 , wherein the coating thickness of the adsorption material in the sorption channels is from 20 to 150 μm.

5. A process for conditioning a fluid, which comprises the following steps:
(a) flow of the process fluid through the sorption channels of a first absorptive heat exchanger,
(b) drying of the process fluid in the first absorptive heat exchanger,
(c) flow of the dried process fluid to the cold side of a cold source,
(d) cooling of the dried process fluid in a cold source,
(e) flow of the dried and cooled process fluid into the region to be conditioned,
(f) parallel flow of the regeneration fluid through the heat exchanger channels of the first absorptive heat exchanger,
(g) uptake of the heat of adsorption by the regeneration fluid,
(h) flow of the heated regeneration fluid to the hot side of a heat source,
(i) further heating of the regeneration fluid in the heat source,
(j) flow of the heated regeneration fluid through the sorption channels of a second absorptive heat exchanger,
(k) vaporization of the adsorbates located in the second absorptive heat exchanger and uptake of these adsorbates by the regeneration fluid,
(l) flow of the moist regeneration fluid into an exterior region;
wherein at least one of the first absorptive heat exchanger and the second absorptive heat exchanger is the absorptive air-air cross-flow heat exchanger of claim 1 .

6. The process according to claim 5 , wherein exhaust air from the region to be conditioned is used as regeneration fluid.

7. The process according to claim 5 , wherein the process is operated cyclically.

8. The process according to claim 5 , wherein the steps (a) to (l) and the cooling of the second absorptive heat exchanger are followed by the following steps:
(m) optional interruption of the flow of the process fluid and of the regeneration fluid in the first adsorptive heat exchanger, should this not yet have taken place,
(n) flow of the process fluid through the sorption channels of a second absorptive heat exchanger,
(o) drying of the process fluid in the second absorptive heat exchanger,
(p) flow of the dried process fluid to the cold side of a cold source,
(q) cooling of the dried process fluid in a cold source,
(r) flowing of the dried and cooled process fluid into the region to be conditioned,
(s) parallel flow of the regeneration fluid through the heat exchanger channels of the second absorptive heat exchanger,
(t) uptake of the heat of adsorption by the regeneration fluid,
(u) flow of the heated regeneration fluid to the hot side of a heat source,
(v) further heating of the regeneration fluid in the heat source,
(w) flow of the heated regeneration fluid through the sorption channels of a first absorptive heat exchanger,
(x) vaporization of the adsorbates located in the first absorptive heat exchanger and uptake of these adsorbates by the regeneration fluid,
(y) flow of the moist regeneration fluid into an exterior region.

9. The process according to claim 5 , wherein, as heat source or cold source, heat pumps based on compressor plants are used.

10. The process according to claim 5 , subsequently comprising a further step:
cooling of the second absorptive heat exchanger.

11. The process according to claim 10 , wherein the cooling of the second absorptive heat exchanger is achieved by means of the regeneration fluid for the second heat exchanger, the conditioned process fluid and/or the exterior air flowing through the heat exchanger.

12. An air conditioning apparatus for conditioning a fluid, comprising
a first absorptive heat exchanger, which has sorption channels in at least one flow direction and has heat exchanger channels in at least one flow direction,
a heat-cold source for the removal of heat arranged downstream of the first absorptive heat exchanger in the flow direction of the sorption channels,
a heat-cold source for the uptake of heat arranged downstream of the first absorptive heat exchanger in the flow direction of the heat exchanger channels and
a second absorptive heat exchanger, which is arranged downstream of the heat-cold source for the uptake of heat and has sorption channels in at least one flow direction and has heat exchanger channels in at least one flow direction, where the sorption channels on the second heat exchanger are arranged in the flow direction of the heat exchanger channels of the first heat exchanger;
wherein at least one of the first absorptive heat exchanger and the second absorptive heat exchanger is the absorptive air-air cross-flow heat exchanger of claim 1 .

13. The air conditioning apparatus according to claim 12 , wherein the heat exchangers and the heat-cold sources are connected via rigid pipes and/or movable hoses.

14. The air conditioning apparatus according to claim 12 , wherein the apparatus does not comprise any rotating components.

15. The air conditioning apparatus according to claim 12 , wherein elements which fan out and/or laminarize the airflow are inserted upstream of the heat exchangers.

16. The air conditioning apparatus according to claim 12 , wherein the adsorption material has a density of from 0.2 to 2 g/cm 3 and metal-organic frameworks and/or modified carbon are used as adsorption material in the sorption channels.

17. The air conditioning apparatus according to claim 12 , wherein BASOLITE® A520, MIL-160, MOF-841, U10-66, DUT-67 and/or MOF-801 are used as adsorption material in the sorption channels.

18. An outer wall element comprising an air conditioning apparatus according to claim 12 .

Assignees

• Basf Se

Inventors

• Noerenberg Ralf
• Opper Walter
• Karwacki Lukasz
• Weickert Mathias
• Mueller Ulrich

Classifications

• C09K5/047

  for absorption-type refrigeration systems · CPC title

• F28F13/18

  by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing · CPC title

• B01D2253/106

  Silica or silicates · CPC title

• F24F3/1429 Primary

  alternatively operating a heat exchanger in an absorbing/adsorbing mode and a heat exchanger in a regeneration mode · CPC title

• B01D53/261

  by adsorption · CPC title