Simulation of Annual Energy Saving Benefit of Solar Collector

The paper introduced design flow chart and algorithm. By inputting solar hot water load, meteorology, solar fraction, system type, water tank volume etc., the software calculated the system annual energy saving benefit, the result was compared with Polysun software and analyzed. According to recent years’ testing date of National Center for Quality Supervision and Testing of Solar Heating System (Beijing), more than one hundred collectors were simulated to promote the solar collector energy efficiency certification.