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Comparison of different models for calculating the annual heat output of solar collectors.

Porovnání ruzných modelu výpoctu rocní produkce tepla solárních kolektoru.

Author(s) : VAVRICKA R., MATUSKA T.

Type of article: Article

Summary

The paper compares four computational models for determination of the thermal performance of a flat-plate solar collector. Individual models were compared by calculating the annual heat output of the flat-plate solar collector in the simulation environment TRNSYS, at the chosen operating temperatures and climatic conditions in Wuerzburg locality. Simulations showed that neglecting the optical characteristics of the collector can significantly overestimate the heat gains of the collector by approximately 25 %. The difference between the dynamic model and the stationary model is very small due to the small time constant of the flat-plate collectors. The difference between the heat output model expressed by the coefficients of the efficiency curve and the detailed model with simulation of the temperature distribution in the collector is within the range of a few percent.

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Pages: 132-136

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Details

  • Original title: Porovnání ruzných modelu výpoctu rocní produkce tepla solárních kolektoru.
  • Record ID : 30020392
  • Languages: Czech
  • Source: Vytápení Vetrání Instalace - vol. 25 - n. 3
  • Publication date: 2016/06

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