Accuracy, tests for simulations of VAV dual-duct, single-zone, four-pipe fan-coil, and four-pipe induction air-handling systems Conference Paper uri icon


  • This paper provides a method for verifying the accuracy of computer models that simulate the performance of the air-handling components of four types of heating, ventilating, and air-conditioning systems: the dual-fan VAV dual-duct system, the single-zone system, the four-pipe fan-coil system, and the four-pipe induction system. To accomplish this, a detailed description of each system and its operating parameters was developed and a set of eight test conditions was generated, consisting of carefully chosen space loads and weather conditions. Each of the systems was simulated at each of the defined conditions. The thermodynamic properties at each point in the system, as well as the heating and cooling coil loads, were calculated. The calculations were then repeated by a second analyst using an independently developed program. The maximum deviation in the total coil loads was 1.8%, and the average of the absolute deviations was 0.4%. These validated results can be used by program developers or users to test the performance of the air-side simulations contained in most building energy analysis computer programs. 2006 ASHRAE.

published proceedings


author list (cited authors)

  • Yuill, G. K., Haberl, J. S., & Caldwell, J. S.

complete list of authors

  • Yuill, GK||Haberl, JS||Caldwell, JS

publication date

  • October 2006