Environmental control system with adsorption based water removal

a technology of environmental control system and water removal, which is applied in the field of air conditioners, can solve the problems of insufficient ecs, ecs therefore has to be oversized or require higher inlet pressure, and the type of system is inherently more complex and may be heavier

Inactive Publication Date: 2008-05-15
HONEYWELL INT INC
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AI Technical Summary

Benefits of technology

[0008]In one aspect of the present invention, a method of removing a supply of water from an air stream comprises the steps of providing a compressed air stream; increasing the moisture content of the compressed air stream such that a super-humidified air stream is provided; positioning the sup...

Problems solved by technology

Water in excess of 30 to 50 grains of water per pound of dry air (g/lb) would freeze in the expansion process of air cycle based ECS or could result in unwanted liquid droplets entrained in the cooled air distributed to the cabin.
The ECS therefore has to be oversized or require higher inlet pressure to cool the cabin load.
That type of system is inherently more complex and may be heavier than the system 500 described above.
Turbine inlet energy is acquired in the form of pressurized airflow by compression of ambient air in a propulsion engine, auxiliary power unit or a number of...

Method used

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  • Environmental control system with adsorption based water removal
  • Environmental control system with adsorption based water removal
  • Environmental control system with adsorption based water removal

Examples

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example 1

[0087]For an aircraft ECS with ambient inlet moisture of 133 g / lb and a 103° F. ambient temperature, an adsorbent sub-system 41 comprising an adsorbent wheel can deliver a water content of 213 g / lb to a high pressure water extractor (high pressure water separation sub-system 85), 80 g / lb above that of a traditional state-of-the-art system. At a temperature of 119° F. achieved by cooling the moist stream in air heat exchange with ambient air and at a pressure of 62.8 psia, the extractor can extract 91 g / lb of the entrained condenser water. The adsorbent wheel captures 80 g / lb out of the remaining water vapor, leaving 41 g / lb, an acceptable supply level, to the turbine 43 and the enclosure 44. The turbine 43 at 60.8 psia and 193.5° F. from the adsorbent wheel delivers 24.3° F. DB / 9.1° F. DAR at 41 g / lb, representing a cooling capacity of 44.5 kW to a 75° F. enclosure based on DAR temperature and a system air flow of 160 lb / min. The air supply system (air supply sub-system50) for that ...

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Abstract

The present invention includes an adsorbent sub-system to concentrate water vapor from an incoming pressurized air stream to a level that allows efficient water condensation with ambient air as the single cooling source. The heat released when condensing the water is transferred to the ambient air, without affecting the cooling capacity of the system.

Description

[0001]This application claims the benefit of U.S. Provisional Application Ser. No. 60 / 865,377, which was filed on Nov. 10, 2006. This application also claims the benefit of U.S. Provisional Application Ser. No. 60 / 865,577, which was filed on Nov. 13, 2006.BACKGROUND OF THE INVENTION[0002]The present invention generally relates to air conditioners and, more particularly, to aircraft environmental control systems.[0003]All aircraft environmental control systems (ECS) designed to cool the cabin environment need to remove excessive atmospheric water. Water in excess of 30 to 50 grains of water per pound of dry air (g / lb) would freeze in the expansion process of air cycle based ECS or could result in unwanted liquid droplets entrained in the cooled air distributed to the cabin.[0004]For a typical prior art high pressure water separation ECS 500, as depicted in FIG. 1a, the water extraction process can be simply represented by the schematics shown in FIG. 1b. The prior art high pressure w...

Claims

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Application Information

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IPC IPC(8): F25B11/00
CPCB64D13/06B64D2013/0662F25B9/004Y02T50/54Y02T50/545Y02T50/56Y02T50/44Y02T50/40Y02T50/50
Inventor JONQUERES, MICHEL A.
Owner HONEYWELL INT INC
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