Bartoli, B.; Cuomo, V.; Francesca, M.; Serio, C.; Barone, G. - In: Applied Energy 10 (1982) 3, pp. 189-202
It is shown that the daily efficiency of flat-plate solar collectors working at constant flow rate can be evaluated with a simple algorithm when their structural features are known. It is also shown that long-term performances can be calculated starting from monthly values of global radiation.