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

Author:

Huang Li1ORCID,Piontek Udo2,Zhuang Lulu1,Zheng Rongyue13,Zou Deqiu4

Affiliation:

1. School of Civil & Environmental Engineering and Geography Science, Ningbo University, Ningbo 315211, China

2. Fraunhofer Institute for Environmental, Safety and Energy Technology UMSICHT, 46047 Oberhausen, Germany

3. Healthy & Intelligent Kitchen Engineering Research Center of Zhejiang Province, Ningbo 315211, China

4. Faculty of Maritime and Transportation, Ningbo University, Ningbo 315211, China

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.

Funder

Natural Science Foundation of Zhejiang Province

Natural Science Foundation of Ningbo

Publisher

MDPI AG

Subject

Energy (miscellaneous),Energy Engineering and Power Technology,Renewable Energy, Sustainability and the Environment,Electrical and Electronic Engineering,Control and Optimization,Engineering (miscellaneous),Building and Construction

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