TY - BOOK AU - Kamminga,W. TI - The approximate temperatures within a flat-plate solar collector under transient conditions N2 - Some of the heat resistances of a conventional flat-plate solar collector are smaller than others. Using this property, analytic approximations of the temperatures within the collector at a moment t = 0, are derived. They are expressed as functions of the time-varying behaviour of the insolation, the ambient temperature and the fluid outlet and inlet temperature. In particular, the fast-varying temperature of the fluid near the collector inlet has been shown. Some applications are mentioned, in which coarser approximations of the temperatures are possible. A simple, one-capacity differential equation describes the fluid temperature, in that case UR - https://drive.google.com/file/d/1cxfj45awclJKQno26a5PFrQ1JYxr9iJs/view?usp=drivesdk ER -