Simplified analytical modeling of an air conditioner with a positive displacement compressor
- Virginia Military Inst., Lexington, VA (United States). Dept. of Mechanical Engineering
- Univ. of Virginia, Charlottesville, VA (United States). Dept. of Mechanical, Aerospace and Nuclear Engineering
- Belvoir Research Development and Engineering Center, Fort Belvoir, VA (United States). Environmental Control and System Support Div.
A simplified computer model to simulate the thermal performance of a vapor-compression air conditioner has been developed. The analytical model was created to predict the performance of a generic air conditioner using a broad range of refrigerants. A loss-efficiency compressor model was developed, assuming that displacement, operational speed, volumetric efficiency and isentropic efficiency information are available. Volumetric and isentropic efficiencies were used to quantify the compressor performance departures from the theoretical cycle. In the simulation model, heat exchanger energy balance relationships for the evaporator and the condenser are coupled to an energy balance on the compressor. A simplified heat transfer model was developed using overall heat transfer coefficients for each heat exchanger. Air conditioner performance using various refrigerants has been successfully demonstrated. Model sensitivity to changes in volumetric efficiency, isentropic efficiency, and to evaporator sensible heat ratio have been documented.
- Sponsoring Organization:
- Department of the Army, Washington, DC (United States)
- OSTI ID:
- 474428
- Report Number(s):
- CONF-960805-; TRN: IM9723%%321
- Resource Relation:
- Conference: 31. intersociety energy conversion engineering conference, Washington, DC (United States), 9-14 Aug 1996; Other Information: PBD: 1996; Related Information: Is Part Of Proceedings of the 31. intersociety energy conversion engineering conference. Volume 3: Policy impacts on energy, renewable energy resources, energy systems, environmental impact; Chetty, P.R.K.; Jackson, W.D.; Dicks, E.B. [eds.]; PB: 684 p.
- Country of Publication:
- United States
- Language:
- English
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