Experimental Analysis of a Polygeneration System: Assessment of the Thermal Sub-System

• Type: Article in International Scientific Journal
• Date: 2024

Authors

Rodrigues, A (Author) Other; A. I. Palmero-Marrero (Author) FEUP; Soares, J (Author) Other; Varga, S (Author) Other; Armando C. Oliveira (Author) FEUP

Journal

Title: Energies

Vol. 17

Final page: 1606

ISSN: 1996-1073

Publisher: MDPI

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-010-4DP

DOI: 10.3390/en17071606

Abstract (EN): In this paper, the experimental results of the thermal sub-system of a reliable and cost-effective polygeneration solar system are presented. This polygeneration system produces heating, cooling, and electricity from solar energy, which is used in an existing test building. Heat is generated in four evacuated tube solar collectors (ETCs). The heat may be used for space cooling through a variable geometry ejector (VGE) heat pump. In order to reduce the mismatches between generation and consumption, two thermal storage tanks were added. The performance of a new thermal storage, with 400 L, able to store both sensible and latent heat, was tested. The heating performances of the test building were assessed. Ejector cycle tests were also performed, and the variation of the cooling coefficient of performance (COP) was calculated for different flow rates. For heating, the results showed that the heat storage was capable of heating the test building for 8 h, with temperatures between 22 degrees C and 26 degrees C. All results showed that this polygeneration prototype could be capable of meeting the heating and cooling needs when applied to a real building.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12