UNITED TECHNOLOGIES CORPORATION
United Technologies Research Center (UTRC) is working on a 18-month program to develop hybrid vapor compression cooling cycle technology and specific components that enable flexible utilization of both electricity and waste heat to generate cooling with high system efficiency. Development will be focused on a lightweight, compact environmental control unit (ECU) design that makes the best use of electricity and waste heat streams provided by a mobile diesel/generator set in common use by the Army. UTRC project deliverables to CERDEC will be a design for a 5 ton (@125°F) environmental control unit linked to a military diesel generator or commercial equivalent, reduced-order design tools and an advanced technology demonstration (ATD) unit. The impact to CERDEC is the delivery of environmental control technology that can improve fuel utilization by 10-40% relative to current commercial R410A air conditioners at the 125°F Army to the 82°F DOE-B rating condition, respectively while giving the environmental and logistical advantages of using CO2 as a working fluid.