Duct Retrofit Strategy to Complement a Modulating Furnace.

Andrews, J. W.

Technical Information Center Oak Ridge Tennessee

关键词: Conductive heat losses;    Ductwork;    Airflow rates;    Modulating furnaces;    Insulating sleeves;   

RP-ID  :  DE2003804678

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Recent work by the author and others indicates that conductive heat losses in ductwork will usually increase significantly when airflow rates are reduced, as will happen when a modulating furnace is installed in place of an existing high-output unit. A duct retrofit strategy is proposed that to mitigate these losses. The strategy involves the use of insulating sleeves installed inside the supply runout ducts.