Nijegorodov, N.; Jain, P.K.; Devan, K.R.S. - In: Renewable Energy 5 (1994) 1, pp. 373-375
A graphical method to estimate the efficiency of a solar concentrator used for heating and boiling liquids is described. The method involves the measuring of temperature of stagnated liquid in the absorber as a function of time at noon. The graphically estimated efficiency is within 5% of the...