Variable Speed Drive Volumetric Tracking for Airflow Control in Variable Air Volume Systems

Author:

Liu Mingsheng1

Affiliation:

1. Energy Systems Laboratory, University of Nebraska-Lincoln, Omaha, NE 68182

Abstract

An airflow control method has been developed for variable air volume (VAV) systems. This airflow control method is termed VSD volumetric tracking (VSDVT) since both the supply and return airflows are determined using signals of variable speed drives (VSD) instead of flow stations. Its performance is studied and compared with the fan tracking (FT) method using model simulations. For the simulation considered, the VSDVT maintains a constant building pressure and the required outside airflow under all load conditions, and reduces the annual supply and return air fan energy significantly. This paper presents the VSDVT method, the system models, and the simulation results.

Publisher

ASME International

Subject

Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment

Reference25 articles.

1. ASHRAE, 1999, HVAC Applications, ASHRAE, pp. 45.1–45.3.

2. Warren, M., and Norford, L. K., 1993, “Integrating VAV Zone Requirement With Supply Fan Operation,” ASHRAE J., 35(35), pp. 43–46.

3. Rose, R. J., and Kopko, W. L., 1994, “A Novel Method for Resetting Duct Static Pressure for Variable Air Volume Systems,” Proc. of ACEEE 1994 Summer Study on Energy Efficiency in Buildings, 5, pp. 219–223.

4. Liu, M., Zhu, Y., Claridge, D. E., and White, E., 1997, “Impact of Static Pressure Set Level on HVAC Energy Consumption and Indoor Conditions,” ASHRAE Trans., 103(2), pp. 221–228.

5. Hartman, T. , 1993, “Terminal Regulated Air Volume (TRAV) System,” ASHRAE Trans., 99, Pt. 1, 791–800.

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