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Open AccessArticle

A New Method to Determine the Annual Energy Output of Liquid-Based Solar Collectors

Department of HVAC Engineering, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, 15-351 Bialystok, Poland
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Partial content of this paper was presented at the VIII International Scientific Conference “Environmental Engineering—Through a Young Eye”, Bialystok 2019.
Energies 2019, 12(23), 4586; https://doi.org/10.3390/en12234586
Received: 29 October 2019 / Revised: 26 November 2019 / Accepted: 1 December 2019 / Published: 2 December 2019
(This article belongs to the Special Issue Innovations-Sustainability-Modernity-Openness in Energy Research 2019)
One of the most effective ways to reduce greenhouse gas emissions is the widespread use of solar panels. A new approach to estimating the annual energy output ESC of liquid-based solar thermal collectors is presented in this paper. The main parameters of the surrounding environment that affect the energy yield from solar water heating (SWH) systems are total solar radiation ES and outdoor air temperature θO. Here, two functions are developed that allow the specification of the ESC value based on these two previously determined factors. The article presents the subsequent stages that led to the development of this method. In the first step, the computer model of a solar domestic hot water (SDHW) system was built in the EnergyPlus environment. An object of the modeling procedure was the real solar installation located at Bialystok University of Technology. The database containing the annual energy output of the solar collectors, total solar radiation, and outdoor air temperature was developed based on the results of simulations made for 24 Polish cities. Then, the multiple regression method (implemented in Statistica v.13.1) was used to correlate these variables. Two contour graphs were also developed to determine the energy yield from solar collectors. View Full-Text
Keywords: solar energy; evacuated tube collectors; flat plate collectors; solar domestic hot water system; multiple regression method solar energy; evacuated tube collectors; flat plate collectors; solar domestic hot water system; multiple regression method
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Zukowski, M.; Radzajewska, P. A New Method to Determine the Annual Energy Output of Liquid-Based Solar Collectors. Energies 2019, 12, 4586.

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