Solar Heat Generation in Estonia and its Peculiarities
Abstract
Solar energy-based heating technology in Estonia has passed its early phase of development and moved into commercialization. In this paper an attempt has been made, by way of computer simulation, to analyse the justification of the usage of evacuated tubular collectors, which have become popular there. Their average seasonal efficiency is 9% higher than a flat plate collector with an equal absorber area. Due to peculiarities of the Estonian (radiation) climate, some techniques are recommended with which to improve energy yield.