Energy Saving Devices on Gas Furnaces.
Abstract
Three devices designed for attachement to gas furnace flues were tested under specified conditions to measure their effect on the thermal efficiency of one furnace. An automatic vent damper (AVD) had no appreciable effect on furnace thermal efficiency. The tests confirmed the claims for this device, that it is of benefit only in reducing air exfiltration while the furnace is off. A vent restrictor and an extended draft hood were of varying effectiveness under the test conditions employed. The performance of these two devices showed that additional testing including furnace derating would be required to properly evaluate and compare these devices. Any consideration of retrofit vent devices should be reviewed with building officials, furnace manufacturer, device manufacturer and local utility with regard to building codes, mechanical codes, furnace warranty, and safety factors. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1980
- Accession Number
- ADA082075
Entities
People
- Philip B. Sheperd
- Thomas E. Brisbane