为了准确评估办公设备和建筑物内其他设备对冷负荷的影响，有必要对其辐射热损失进行测量。本文描述了ASHRAE研究项目RP-822《测量建筑物内设备的热增益和辐射/对流分离的试验方法》中开发的一种测量这种热损失的新方法。这种测量方法在这里被称为扫描辐射计方法，它使用了一种相对便宜的非接触式测量方法- 使用架网辐射计进行测量。辐射计扫描被评估设备周围的半球形区域，通过积分该区域的净辐射通量，测量从设备到房间的总辐射通量。这种方法会自动补偿房间中的其他辐射通量。辐射计传感器必须为此应用进行校准，为此开发了一种简单的装置。在使用扫描辐射计方法评估各种设备项目的辐射热损失之前，通过测量加热平板和加热球体的辐射热损失进行测试。 这些定义明确的物体的辐射热损失可以准确计算，并与扫描辐射计测量的结果进行比较。在这两种情况下，扫描辐射计方法产生的结果都在计算辐射热损失的不确定性范围内。使用扫描辐射计方法所需的设备和设施可以以适中的成本组装，建议将来在实验室和现场测量建筑物内设备的辐射热损失。 单位:双引文:研讨会，ASHRAE交易，1998年，第104卷，pt。1A，旧金山

Measurement of the radiant heat loss from office equipment and other equipment in buildings is necessary in order to make accurate assessments of their impact on cooling loads. This paper describes a new method of measuring this heat loss that was developed as a part of ASHRAE research project RP-822,Test Method for Measuring the Heat Gain and Radiant/Convective Split from Equipment in Buildings. The measurement method, referred to here as the scanning radiometer method, utilizes a relatively inexpensive, off-the-shelf net radiometer to make the measurements. The radiometer scans a hemispherical area around the equipment being evaluated, and, by integrating the net radiant flux through this area, the total radiant flux from the equipment to the room is measured. This method automatically compensates for other radiant fluxes in the room. The radiometer sensor must be calibrated for this application, and a simple device was developed for this purpose. Before various equipment items were evaluated for radiant heat loss using the scanning radiometer method, it was tested by measuring the radiant heat losses from a heated flat plate and a heated sphere. The radiant heat loss from these well-defined objects could be calculated accurately and compared to the results obtained with the scanning radiometer measurement. In both cases, the scanning radiometer method yielded results well within the range of uncertainty in the calculated radiant heat losses. The equipment and facilities required for using the scanning radiometer method can be assembled at modest cost, and this method is recommended for future laboratory and field measurements of radiant heat loss from equipment in buildings.Units: Dual