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Estimation of refrigerant charge inventory for an automotive air conditioning system.

Number: pap. 2384

Author(s) : PULINKUZHI V., THAKOR V., DATTA S. P., et al.

Summary

The knowledge about the refrigerant charge distribution in each component of an automotive air-conditioning system (AACS) is essential to predict any leakage into the system, health monitoring and estimation of overall system performances. However, estimating charge distribution in each component is not as easy as finding the total refrigerant mass into the system. It is observed mostly the condenser and the evaporator are the two major components, which consume maximum volume of refrigerant. In this present work the refrigerant inventory in each component of an AACS are estimated by using an analytical technique which is a modified version of Otaki method. It gives an advantage over actual Otaki method by ignoring the outside heat transfer coefficient to accommodate the design complexity of an automotive heat exchanger. Though the heat exchangers are the major stake holders of refrigerant, the residual refrigerant in compressor, liquid line, vapor line and expansion device is estimated according to their volume and density by this modified Otaki method. A comparative study between the Otaki and modified Otaki method justifies the acceptability of the later for a wide range of experimental data with the variation of compressor speed, blower speed and refrigerant charge from undercharging to overcharging.

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Pages: 10

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Details

  • Original title: Estimation of refrigerant charge inventory for an automotive air conditioning system.
  • Record ID : 30024527
  • Languages: English
  • Source: 2018 Purdue Conferences. 17th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2018/07/09

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