Honeywell International Inc.

Alliedsignal Inc.

Other

Michel A Jonqueres

Peter C Collins

Felipe A Fuentes

Jim A Emerick

Wayne T Pearson

Peter M Michalakos

Francis Stephen Lupton

Roger P Murry

Shaojun Zhou

Jean-Luc Derouineau

Alfred Sauterleute

Russ Johnson

Roy Araki

Roger R Sanger

Stanley C Pollitt

Kathrine J Clarke

Ronald E Crabtree

George N Afeiche

Thomas J Kazan

Robert J Kay

Tim Birbeck

An aircraft environmental control system (ECS) may be configured to operate in first mode and a second mode. The ECS may include an air cycle machine (ACM), a by-pass valve positioned to allow bleed air to by-pass the air cycle machine so that when the by-pass valve is open, the ECS operates in the first mode with bleed air at a first pressure and when the by-pass valve is closed the ECS operates in the second mode at a second bleed air pressure, higher than the first bleed air pressure. A bleed air system controller and ECS controller may be configured to selectively couple high pressure or low pressure bleed air ports of an engine of an aircraft to the ECS and control the by-pass valve position.

Low-pressure bleed air aircraft environmental control system

An aircraft architecture may be designed to create an optimal balance between electric power and bleed power in order to match or improve current more electric architecture (MEA) performance while simplifying power extraction from the engines as well as simplifying the electrical system. Conventional aircraft architectures may use electric only ECS and cabin pressurization systems (so-called 'no bleed' systems). Alternatively, older conventional aircraft may use strictly engine bleed air to provide power for ECS and cabin pressurization systems. The present invention, on the other hand, provides an architecture which may optimize the use of both engine bleed air and MEA designs to provide a system that may be simpler and potentially more reliable and available as compared to conventional aircraft architectures.

Smart hybrid electric and bleed architecture

A water purification system comprising a thermal hydrolysis catalytic reactor, an adsorbent media bed and a reverse osmosis unit is provided. The water purification system may provide potable water from non-potable water, such as non-potable water contaminated with chemical warfare agents, biological warfare agents, radioactive agents and/or Toxic Industrial Chemicals (TICs). Methods for providing potable water using the water purification system of the present invention are also provided.

Water purification system and modes of operation

Systems, apparatus, and methods for the catalytic removal of at least one pollutant from an air stream via a catalytic precooler arranged in series with at least one augmentative catalytic device. The augmentative catalytic device may be located upstream or downstream from the catalytic precooler. The augmentative catalytic device may be integrated with the catalytic precooler, thereby eliminating the need for a separate housing and minimizing weight. Alternatively, the augmentative catalytic device may be disposed within a separate housing, thereby facilitating access for maintenance and decreasing direct maintenance costs.

Augmented catalytic heat exchanger system

The vapor membrane dehumidification device and method for air cycle environment control systems uses a semipermeable vapor membrane for water vapor, air separation. The vapor membrane has a high water to air permselectivity. When air containing water vapor is passed over or through the semipermeable fibers of the membrane countercurrently or crosscurrently to a purge air stream the water vapor may permeate through the fibers. Using a purge air stream of lower water vapor partial pressure relative to the feed moist air stream, the water vapor is moved to the purge air stream due to the partial pressure differential of water vapor and then expelled overboard with the purge air stream. The purge air stream can be replaced with any source of air internal or external to the aircraft such as air from the aircraft cabin.

Vapor membrane dehumidification for air cycle environment control system

This invention relates to an air-conditioning system for passenger aircraft for conditioning humidity-containing air under excess pressure for air-conditioning a passenger aircraft cabin, comprising at least one compressor and two expansion turbines, where in accordance with the invention a droplet coalescing device with succeeding water separator is disposed between the expansion turbines.

Air-conditioning system for aircraft

A two spool environmental control system includes a low pressure spool subsystem comprising a low pressure turbine and a condenser downstream of the low pressure turbine. A high pressure spool subsystem is in air flow communication with the low pressure spool subsystem and includes the condenser, a first water extractor in air communication with the condenser, a high pressure turbine downstream of the condenser, a second water extractor in air flow communication with the condenser, and a reheater downstream of the high pressure turbine.

ECS with 2-stage water separation

An environmental control system provides for two stage compression and expansion of a bleed air within a cooling cycle, while allowing for a separately driven fan to handle ambient air as a heat sink. The system comprises a plurality of compressors capable of compressing a water vapor bearing air to produce a compressed air. A reheater is capable of cooling the compressed air. A condenser is in flow communication with the reheater, with the condenser being capable of condensing the water vapor. A water extractor is in flow communication with and intermediate of the condenser and the reheater. A plurality of turbines are in flow communication with and downstream of the reheater.

Air cycle environmental control systems with two stage compression and

An environmental control system includes a single heat exchanger, a single water separator and two air cycle machines on separate spools. Cooling turbines of the air cycle machines are cascaded. Air flows through both air cycle machines during normal operation of the environmental control system. If one of the air cycle machines fails, air can be bypassed around the failed air cycle machine. Cascading allows water separation to be performed by a mid-pressure water separator located between the air cycle machines.

Single package cascaded turbine environmental control system

An air cycle environmental control system regenerates energy through the provision of a reheater condenser that condenses water vapor from compressed air. The condensed water vapor is extracted by a water extractor to produce dehumidified air. A subcooler heat exchanger can receive the dehumidified air for further cooling, but while causing a minimal amount of condensation. A subcooled air from the subcooler heat exchanger is then reheated in the reheater condenser, with a resulting reheated air having absorbed a heat of sensible cooling and heat of condensation. The reheated air then passes into a first turbine which recovers a heat of sensible cooling and heat of condensation. The first turbine expands the air, which then flows through the subcooler heat exchanger and into a second turbine for additional recovery of a heat of sensible cooling and heat of condensation. The second turbine cools the air by expansion for delivery to an enclosure to be conditioned.

Air cycle environmental control system with fully energy regenerative

An air cycle environmental control system regenerates energy through the provision of a reheater condenser that condenses water vapor from compressed air. The condensed water vapor is extracted by a water extractor to produce dehumidified air. A subcooler heat exchanger can receive the dehumidified air for further cooling, but while causing a minimal amount of condensation. A subcooled air from the subcooler heat exchanger is then reheated in the reheater condenser, with a resulting reheated air having absorbed a heat of sensible cooling and heat of condensation. The reheated air then passes into a turbine where the heat of sensible cooling and heat of condensation are recovered. The turbine expands the air, which then flows through the subcooler heat exchanger and finally to an enclosure to be conditioned.

Air cycle environmental control system with energy regenerative high

A method for conditioning water vapor bearing compressed air for supply as conditioned air to an enclosure includes the steps of flowing the compressed air into a condenser-evaporator heat exchanger and then cooling the compressed air with a liquid evaporating refrigerant in the condenser-evaporator. Thus, the water vapor in the compressed air can become condensed liquid water available for subsequent separation to form a dehumidified air. The dehumidified air undergoes reheating with a vapor condensing refrigerant in a reheater-condenser such that the dehumidified air becomes a reheated air. The reheated air is then routed through a turbine to provide the supply to the enclosure. An apparatus is also provided for accomplishing the above steps and includes a condenser-evaporator heat exchanger capable of placing the compressed air in heat exchange relationship with a vapor cycle subsystem. A water extractor is in flow communication with the condenser-evaporator, with the extractor being for extracting the condensed water to produce a dehumidified air. A reheater-condenser is in flow communication with the water extractor. The reheater-condenser is capable of placing the dehumidified air in heat exchange relationship with the vapor cycle subsystem to produce an evaporated air. A turbine is in flow communication with the reheater-condenser such that the turbine is capable of producing a cooled, expanded air to the enclosure.

Air cycle environmental control system with vapor cycle system assisted

An integrated system for removal of CO.sub.2 from and thermal conditioning of a gas mixture is disclosed. A pair of regenerating chemically impregnated molecular sieve absorption beds are used for removal of the CO.sub.2. A heat exchanger used in the thermal conditioning subsystem also heats the gas used to regenerate the beds and cools absorption gas. A recirculation fan moves the gas mixture throughout the entire thermal conditioning and gas purification system.

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Torrance, CA, United States of America

Michel A Jonqueres