Pei, Gang; Li, Guiqiang; Zhou, Xi; Ji, Jie; Su, Yuehong - In: Energies 5 (2012) 4, pp. 911-924
Evacuated tube solar water heater systems are widely used in China due to their high thermal efficiency, simple construction requirements, and low manufacturing costs. CPC evacuated tube solar water heaters with a geometrical concentration ratio <em>C</em> of less than one are rare. A comparison of the...