Study on Thermal Performance of Electric Heating System with Salt Hydrate-PCM Storage

Li Huang, Udo Piontek, Lulu Zhuang, Rongyue Zheng () and Deqiu Zou
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Li Huang: School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China
Udo Piontek: Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, 46047 Oberhausen, Germany
Lulu Zhuang: School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China
Rongyue Zheng: School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China
Deqiu Zou: Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

Energies, 2023, vol. 16, issue 20, 1-21

Abstract: An electric radiator combined with salt hydrate-phase change material (PCM) storage was developed to replace the existing scattered coal burning systems for clean heating applications. It was designed to have an average heat output of 400 W and a thermal storage efficiency of 65.6% for reducing the electricity peak load. The thermal performance was investigated experimentally and numerically by using various radiator configurations and electric heating powers, as well as three PCMs with a melting point of 58 °C (PCMI 58), 78 °C (PCMI 78) and 90 °C (PCMI 90). It was found that the radiator combined with PCMI 78 had an average heat output of 412 W, and the PCMI 78 could be completely charged within 8 off-peak hours at an electric heating power of 1270 W, in the case of the radiator external dimension L × B × H of 796 × 106 × 656 mm and the L/B ratio of 7.5. The experiment results indicated that the average room temperature could be maintained at 20.0 °C at an outdoor temperature of 5.2 °C when applying the electric radiator developed.

Keywords: electric radiator; PCM storage; salt hydrate; thermal performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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