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Second law study of HVAC distribution system performance.

Author(s) : FRANCONI E. M., BRANDEMUEHL M. J.

Summary

In the study, the performance of two HVAC distribution systems is evaluated using the first and second laws of thermodynamics. The constant-air-volume and variable-air-volume systems are modeled using he TRNSYS simulation program. A first law analysis is used to investigate the relationship between building loads, distribution system loads, and plant energy consumption. A combined law analysis is completed to determine exergy flows and the useful work depleted by system components. To measure distribution system design advancements, the second law efficiencies of the two systems are compared. Applications of exergy analysis for making better informed operation and maintenance decisions are also explored.

Details

  • Original title: Second law study of HVAC distribution system performance.
  • Record ID : 2000-2086
  • Languages: English
  • Source: ASHRAE Transactions. 1999 Winter Meeting, Chicago, Illinois + CD-ROM.
  • Publication date: 1999
  • Document available for consultation in the library of the IIR headquarters only.

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