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Optimization of compressors used in air conditioning systems.

Number: pap. 1562

Author(s) : ARALIKATTI J. V., ZIETLOW D. C.

Summary

Strong market pressures cause most compressors in air conditioning (AC) units to be designed by minimizing the initial cost. Since most manufacturers don’t own the air conditioning system, the operating cost of the system over the life of the component, is often neglected. The objective of this project is to create an analytical model that simulates an actual AC unit and then use it to arrive at the optimized design variables based on the lowest total life-cycle cost. Performance of a compressor is affected by several factors including compressor speed, suction and discharge pressures, and component geometry and valve efficiencies. The effect of these factors on the compressor performance in terms of volumetric and isentropic efficiencies is modeled for a reciprocating compressor. Experimental data is collected from an AC unit to verify and validate the analytical model at different operating conditions. Energy balances between the refrigerant and air side of the heat exchangers showed an average error less than 10% which confirms the accuracy of the instrumentation. A parameter optimization is conducted on the empirical coefficients used in the analytical model by minimizing the RMS error between the model and experimental data. This validated model can be used to optimize the compressor to obtain the lowest total life-cycle cost for different working environments.

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Pages: 10

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Details

  • Original title: Optimization of compressors used in air conditioning systems.
  • Record ID : 30024373
  • Languages: English
  • Source: 2018 Purdue Conferences. 24th International Compressor Engineering Conference at Purdue.
  • Publication date: 2018/07/09

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