1990-02-01

New Selective Transmittance Glazing for Optimizing Automotive Air Conditioning Systems 900851

“Tinted” glass, which has been in use in automotive applications for almost forty years, has been offered as part of air conditioning systems since their introduction. However, with the changes being imposed on other components, and the increasing use of glass relative to the total surface area of vehicles, the automotive glazing industry has been rethinking its function in that system. Innovations such as new glass compositions, coated glasses, aftermarket films, electrochromic variable transmission and auxiliary air-moving devices are being evaluated to reduce the input load on the air conditioner, improve passenger comfort or maintain system performance with new refrigerants.This paper will discuss the approach taken in engineering two solar heat load reduction products which have recently been introduced on new vehicles and the results achieved by these glasses to deal selectively with the solar energy spectrum, particularly the infrared (IR) region.

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