本文介绍了一种在隔热玻璃（IG）单元内获得二维表面温度的技术。该方法基于使用数码相机拍摄的液晶片。然后使用经过校准的计算机程序将照片从颜色转换为温度。该技术用于测量垂直长宽比为21的IG装置3号表面（即，面向暖侧窗格玻璃充气腔的表面）的温度。 3.将IG装置插入木框窗中，并在相应瑞利数为14500的环境室内经受冬季条件。论文的第一部分介绍了校准程序。结果表明，所提出的方法可以给出很好的定性二维热场。此外，它可以在像素级（本实验中为1 mm x 1 mm）提供相对准确的定量温度测量，尤其是在IG单元底部附近，不确定度为±0。 25°C。该技术可能与其他测量技术结合使用，以评估内膜系数和研究耐冷凝性。单元:科学:研讨会，ASHRAE交易，第106卷，第页。2.

This paper describes a technique to obtain two-dimensional surface temperatures inside an insulating glazing (IG) unit. The method is based on the use of liquid crystal sheets that are photographed with a digital camera. The photographs are then processed using a calibrated computer program for conversion from color to temperature. The technique was used to measure temperatures on surface no. 3 of an IG unit (i.e., surface facing the air-filled cavity of the warm-side pane) with a vertical aspect ratio of 21.3. The IG unit was inserted in a wood-frame window and subjected to winterlike conditions in an environmental chamber with corresponding Rayleigh numbers of »14,500. The first part of the paper is devoted to the calibration procedure. Then it is shown that the proposed technique can give excellent qualitative two-dimensional thermal fields. In addition, it can give relatively accurate quantitative temperature measurements at the pixel level (1 mm x 1 mm in the present experiment) especially near the bottom of the IG unit where the uncertainty is ±0.25°C. The technique could potentially be employed, in conjunction with other measuring techniques, to evaluate inside film coefficients and to study condensation resistance.Units: SI