Abstract
The overall fuel efficiency in air conditioning systems can be improved by combining a system that requires high temperature, such as the compression cycle, with a system that requires low temperature heat, such as the absorption cycle. It is noted that this is the thermodynamic principle for electric cogeneration. The system can be considered cogeneration that bypasses the conversion of mechanical power to electricity, and thus avoids conversion losses, the additional costs of an electric generator and motor, the complications and issues of buy back rate by the electric utility grid, interconnect requirements, and peak demand charges. The system provides the maximum utilization of the heat that results from the burning of fuel over the entire temperature range by converting about 30% of the fuel energy to compressor input power. Most of the 70% of the fuel energy that is rejected by the engine is usefully recovered by the absorption cycle. The result is a virtual doubling of effective fuel efficiency and decreased need for new electric capacity for air conditioning on the hottest days of summer. The result can be a 50% energy cost saving to the user and up to a 90% capital cost savings for the air conditioning energy delivery system. >
Published Version
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