ABSTRACT
Energy conservation has become a key concern of today’s consumer. Globally, insulation of buildings, homes and offices to conserve energy has become critical. Fluorocarbon blown insulation has historically provided the highest R-value per inch.
Due to environmental concerns HCFC technology will soon be replaced with HFC technology. Honeywell is dedicated to providing an HFC blowing agent to the construction industry. It has dedicated many years conducting research on HFC-245fa (1,1,1,3,3-pentafluoropropane) as a replacement for HCFC-141b. Honeywell is currently supplying semi-commercial quantities of HFC-245fa to the construction industry for industrial scale evaluations and field trials. Construction of the commercial facility is underway and is targeted to be operational mid −2002.
There are a variety of foam applications in the construction industry. Each has specific product requirements. In some applications the R-value of the insulation is critical. In other applications the insulation value is not as critical as the cost. Honeywell intends to supply HFC-245fa technology to meet all of these needs. HFC-245fa technology provides insulation with the highest R-value. HFC-245fa blend technology makes it possible produce foams with the optimal balance between blowing agent performance and cost.
This paper will discuss the progress made developing HFC-245fa and HFC-245fa blends in a variety of construction applications. It will include a discussion of laboratory and field evaluations vs. current HCFC-14lb technology.
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