The constant flow ground collector/storage system consists of a network of pipes buried in the ground; the top surface is black ened and covered with a thermal trap. For a 0·05 m thickness of thermal trap and for a 0·14 m depth of the plane of heat retrieval, the collection efficiency of...

In order to account for the day-to-day variation in the solair temperature data, the coefficients in its Fourier series representation have been assumed to be time dependent. The variation in the numerical values of the coefficient being random, they have been modelled as a stochastic process....

This paper examines the effect of the absorption coefficient of a transparent slab, which forms the outer layer of a roof/wall, on such factors as average thermal flux passing/through/a roof/wall, maximum and minimum values of this thermal flux and the thermal load levelling. It is seen that a...