Measured Performance of Variable-Air-Volume Boxes.
Abstract
This report documents the results of work conducted to measure the performance of currently available variable-air-volume (VAV) boxes in terms of pressure independence, linearity, and hysteresis. This work was part of research being conducted to develop control systems for simple and reliable retrofit applications to heating, ventilating, and air-conditioning systems. General conclusions of the study indicated that the performance characteristics of VAV boxes vary widely and that this variation is likely to continue until consistently applied manufacturing standards are implemented. The tests also showed that most VAV boxes do not quite meet the manufacturers performance claims. A general problem is the boxes' inability to conform to specified minimum and maximum flow rates; although recalibration to give the desired flow rates is possible, it would be a difficult, time-consuming procedure in the field.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1986
- Accession Number
- ADA173266
Entities
People
- Douglas C. Hittle
- Lynn Krajnovich
Organizations
- Construction Engineering Research Laboratory