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Recirculating Regenerative Environmental Control System
Technical Paper
2004-01-2575
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The rapid increase of liquid cooling demand from high-power and high-density avionics in military aircraft has been a challenge for aircraft cooling system designers. A number of state-of-the-art approaches were presented in SAE 2003-01-2399. This paper is a continuation of that discussion on the advancement of environmental-control-system design to meet the higher demands for liquid cooling.
In this paper, another advanced environmental control system will be presented. The advanced system is one of a new generation of “bootstrap” air-cycle cooling systems. Similar to a traditional bootstrap air-cycle system, the advanced system is powered by high-pressure engine bleed air and uses ambient ram air and/or on-board fuel as a heat sink. However, unlike a typical air-cycle system, the advanced system maximizes usage of engine bleed pressure to form a recirculation flow path. It is also able to recover waste energy from electronics equipment, so as to maximize re-use of aircraft-generated energy to boost system efficiency.
This new approach will significantly reduce bleed-air consumption and heat-sink demand, both of which are key parameters for energy-efficient aircraft design.
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Citation
Lui, C., Quan, M., and Wong, R., "Recirculating Regenerative Environmental Control System," SAE Technical Paper 2004-01-2575, 2004, https://doi.org/10.4271/2004-01-2575.Also In
References
- SAE 2003-01-2399 Dual Expansion Energy Recovery Environmental Control System
- Recirculating Regenerative Air Cycle