Abstract
With the account of modern requirements of energy saving each year increase actuality of technologies of use solar energy to decrease energy consumption. Multifunctional utilization of solar radiation make able much more degree in autonomy the energy supply of buildings, that main condition in case of too far location of traditional resources and appear of faults during their supply. Because of it is considered possibility of receiving heat and electrical energy in one technical device, with high efficiency. It is offered structural solution of multifunctional flat solar collector, which rise efficiency of radiation utilization. It is analyzed degree. It is analyzed the degree of absorption of solar radiation by additional location the photo converters in the device. It is estimated the influence of occupied by semi-conductors square on total absorption coefficient. It is proved, that by occupied square with photo elements less than 20% square of collector, the decrease of heat process parameters will be in limits of 5%. However by this it will be act neither heat, not electrical energy, which could be forwarded to systems of building life-support systems. Beside of it, for increase efficiency of solar collector it is offered additional processing of absorber’s surface, which is rise degree of radiation absorption. Technology of laser weld allows to create on surface ultra-thin cell ribbing, which in forthcoming could be consider as decrease reflection roughness. Execution by this way ribbing increase panel’s square and its absorption ability. By this size of cells could be from 0,5 to 4 mm and choose in depend of area irradiance, where will be located solar unit.
Highlights
In conditions of rise of prices on natural resources, the more and more competition capability receive renewable energy source
Comparative estimation of two most available approaches of energy receive by using photo transformers and solar collectors show advantage of generation of heat processes
By absorption of solar radiation by absorber part of flat collector, the specific utilized flow is estimated by formulae [13]: ЕА
Summary
In conditions of rise of prices on natural resources, the more and more competition capability receive renewable energy source. It is especially shows by solution the problem of energy supply of buildings, which don’t have access to central nets of heat-, gas- and electricity supply [1]. More widespread and multifunctional utilized renewable source is solar energy. In result of efficient transformation of radiation it is possible to supply low-story building with heat and electrical energy and organize alternative cold-supply. Source provision rate of regions, located southern 60 °north longitude, is allow to successful utilize solar radiation in heat and transit year periods and particular compensate necessity in heating season and total supply, using additional heat-pump equipment. Search of innovation solutions in this direction will expand period of season exploitation of solar units and decrease payback period [2]
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