Introduction. In some solar concentrating system applications, in which the incoming sunlight is augmented by using commercial flat plate reflectors placed on different sides of planar collector, it very important to choose optimum tilts boosters (attached edge-to-edge top and bottom collector) for each month, enhance their received irradiation over year southern Algeria. The novelty proposed w...

In this paper, we studied theoretically and numerically heated losses of a flat solar collector to model the water heating system for Kazakhstan climate condition. For different climatic zones with growing cost energy or lack central systems, promising is find ways improve efficiency system. The mathematical (based on ordinary differential equation) simulated work process under conditions. To b...