给定热环境的平均辐射温度（MRT）是影响乘员热舒适性的重要环境参数。MRT通常采用黑球法或表面温度法测量。然而，全球温度计的响应速度很慢，无法记录HVAC系统的快速运行或太阳入射等外部因素。它还需要额外的传感器来测量空气温度和速度，从而得出平均辐射温度。由于传感器的响应更快，表面温度法速度更快。但为了计算MRT，需要大量传感器来测量多个代表性位置的表面温度。这种方法取决于表面温度的均匀性，对于可用传感器长度有限且干扰居住者生活方式的大型或大型空间来说可能不切实际。使用红外（IR）摄像头监测表面温度的干扰性较小，但仍存在视图因素、传感器部署和精度方面的困难。 一种基于实际接收的辐射能来确定MRT的装置是可取的，该装置类似于黑球，但具有更快的响应时间。在本研究中，开发了一种红外球装置来测量平均辐射温度。根据表面温度法和黑球法测定MRT，将该装置部署在两个试验建筑现场。结果表明，所研制的红外球装置具有较高的精度、经济性和鲁棒性。引用:德克萨斯州达拉斯ASHRAE Transactions第119卷第1部分。

The mean radiant temperature (MRT) of a given thermal environment is an important environmental parameter that influences the thermal comfort of occupants. The MRT is typically measured by the black globe or surface temperature methods. However, the response rate of a globe thermometer is slow to document rapid HVAC system operation or external factors such as solar incidence. It also requires additional sensors to measure the air temperature and velocity to derive the mean radiant temperature.The surface temperature method is faster due to the quicker response of the sensors. But a quantity of sensors is required to measure surface temperatures at a number of representative locations in order to calculate MRT. This method is contingent on the surface temperature uniformity and may be impractical for large or spaces for limited available sensor lengths and interference with the lifestyle of the occupants. Using an infrared (IR) camera to monitor surface temperature is less intrusive, but the difficulties of view factors, sensor deployment, and accuracy remain.A device based on the actual reception of radiant energy to determine the MRT similar to the black globe, but with a quicker response time, is desirable. In this study, an infrared sphere device was developed to measure the mean radiant temperature. The device was deployed at two test building sites against the surface temperature method and the black globe method in determining MRT. The results show that the infrared sphere device developed is fairly accurate, affordable, and robust.