Experimental Investigation of an Inexpensive Sky Temperature Measuring Device. Final Report, June 1, 1977-June 30, 1979

摘要

The objectives were to develop a simple approach for determining clear sky temperature from ground air temperature and absolute humidity and to develop an inexpensive device for direct measurement of sky temperature. The analytical approach taken was similar to that developed by Bliss. A simpler model to estimate sky temperature to acceptable accuracy, however, was not achieved. A simple device to measure sky temperature was designed and tested but development efforts within the means of the project were unsuccessful. It was concluded that a device that could include measurement or knowledge of the convective heat transfer coefficient rather than control or elimination of it would be an alternative approach in the development of a sky temperature measurement device. Project funds were depleted before the alternative device could be designed and tested. (ERA citation 05:008771)