NUMERICAL SIMULATION OF CONCENTRATING SOLAR COLLECTOR P2CC WITH A SMALL CONCENTRATING RATIO

Abstract

Solar energy may be practically utilized directly through transformation into eat, electrical or chemical energy. A physical and mathematical model is resented, as well as a numerical procedure for predicting thermal performances f the P2CC solar concentrator. The demonstrated prototype has the reception ngle of 110„a at concentration ratio CR = 1.38, with the significant reception of iffuse radiation. The solar collector P2CC is designed for the area of middle emperature conversion of solar radiation into heat. The working fluid is water ith laminar flow through a copper pipe surrounded by an evacuated glass layer. ased on the physical model, a mathematical model is introduced, which consists f energy balance equations for four collector components. In this paper, water emperatures in flow directions are numerically predicted, as well as emperatures of relevant P2CC collector components for various values of input emperatures and mass flow rates of the working fluid, and also for various alues of direct sunlight radiation and for different collector lengths. The device hich is used to transform solar energy to heat is referred to as solar collector. his paper gives numerical estimated changes of temperature in the direction of luid flow for different flow rates, different solar radiation intensity and different nlet fluid temperatures. The increase in fluid flow reduces output temperature, hile the increase in solar radiation intensity and inlet water temperature ncreases output temperature of water. Furthermore, the dependence on fluid utput temperature is determined, along with the current efficiency by the umber of nodes in the numerical calculation.

Keywords

Dates

  • Submission Date2012-04-30
  • Revision Date2012-09-24
  • Acceptance Date2012-09-28

DOI Reference

10.2298/TSCI120430184S

References

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