Simulation of simple solar collector with reflective panels and boiler

The concept of solar thermal water heating is very simple: the energy of the sun is absorbed by some solar collectors. This paper focuses on the combination of high efficiency boilers with simple collectors in domestic heating plants. The water temperatures have been calculated over a day time as function of weather data, dimensions of the pipes and surfaces of the panels, and of water consumption. The values of the cyclic efficiencies of a boiler can be calculated by simulation at partial load and compared with experimental results and with those of other high efficiency boilers for tap water service.