Thermal Storage Performance of a Dual-Purpose Underground Thermal Battery for Shaping the Electric Demand of Buildings

Lingshi Wang; Xiaobing Liu; Ming Qu; Liang Shi

doi:10.46855/energy-proceedings-7329

Thermal Storage Performance of a Dual-Purpose Underground Thermal Battery for Shaping the Electric Demand of Buildings

Lingshi Wang, Xiaobing Liu, Ming Qu, Liang Shi

Building Equipment Research Group

Research output: Contribution to journal › Conference article › peer-review

Abstract

A dual-purpose underground thermal battery (DPUTB) integrates a ground heat exchanger with underground thermal energy storage. It can be installed in shallow boreholes (less than 6 m deep) and thus is less expensive than the conventional ground heat exchangers. The thermal energy storage can be used to shave or shift the electric load for meeting the thermal demands of a building. The charging and discharging performance of a lab-scale DPUTB were tested. The test results show that the DPUTB can be fully charged within 4 h and can provide 34 W cooling continuously for 2.5 h with a supply water temperature below 14°C. A small amount of phase-change material significantly increased the thermal storage capacity.

Original language	English
Journal	Energy Proceedings
Volume	11
DOIs	https://doi.org/10.46855/energy-proceedings-7329
State	Published - 2020
Event	12th International Conference on Applied Energy, ICAE 2020 - Bangkok, Thailand Duration: Dec 1 2020 → Dec 10 2020

Keywords

Ground heat exchanger
peak electric demand
phase-change material
thermal storage
underground thermal battery

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.46855/energy-proceedings-7329

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title = "Thermal Storage Performance of a Dual-Purpose Underground Thermal Battery for Shaping the Electric Demand of Buildings",

abstract = "A dual-purpose underground thermal battery (DPUTB) integrates a ground heat exchanger with underground thermal energy storage. It can be installed in shallow boreholes (less than 6 m deep) and thus is less expensive than the conventional ground heat exchangers. The thermal energy storage can be used to shave or shift the electric load for meeting the thermal demands of a building. The charging and discharging performance of a lab-scale DPUTB were tested. The test results show that the DPUTB can be fully charged within 4 h and can provide 34 W cooling continuously for 2.5 h with a supply water temperature below 14°C. A small amount of phase-change material significantly increased the thermal storage capacity.",

keywords = "Ground heat exchanger, peak electric demand, phase-change material, thermal storage, underground thermal battery",

author = "Lingshi Wang and Xiaobing Liu and Ming Qu and Liang Shi",

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year = "2020",

doi = "10.46855/energy-proceedings-7329",

language = "English",

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journal = "Energy Proceedings",

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TY - JOUR

T1 - Thermal Storage Performance of a Dual-Purpose Underground Thermal Battery for Shaping the Electric Demand of Buildings

AU - Wang, Lingshi

AU - Liu, Xiaobing

AU - Qu, Ming

AU - Shi, Liang

PY - 2020

Y1 - 2020

N2 - A dual-purpose underground thermal battery (DPUTB) integrates a ground heat exchanger with underground thermal energy storage. It can be installed in shallow boreholes (less than 6 m deep) and thus is less expensive than the conventional ground heat exchangers. The thermal energy storage can be used to shave or shift the electric load for meeting the thermal demands of a building. The charging and discharging performance of a lab-scale DPUTB were tested. The test results show that the DPUTB can be fully charged within 4 h and can provide 34 W cooling continuously for 2.5 h with a supply water temperature below 14°C. A small amount of phase-change material significantly increased the thermal storage capacity.

AB - A dual-purpose underground thermal battery (DPUTB) integrates a ground heat exchanger with underground thermal energy storage. It can be installed in shallow boreholes (less than 6 m deep) and thus is less expensive than the conventional ground heat exchangers. The thermal energy storage can be used to shave or shift the electric load for meeting the thermal demands of a building. The charging and discharging performance of a lab-scale DPUTB were tested. The test results show that the DPUTB can be fully charged within 4 h and can provide 34 W cooling continuously for 2.5 h with a supply water temperature below 14°C. A small amount of phase-change material significantly increased the thermal storage capacity.

KW - Ground heat exchanger

KW - peak electric demand

KW - phase-change material

KW - thermal storage

KW - underground thermal battery

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U2 - 10.46855/energy-proceedings-7329

DO - 10.46855/energy-proceedings-7329

M3 - Conference article

AN - SCOPUS:85202638246

SN - 2004-2965

VL - 11

JO - Energy Proceedings

JF - Energy Proceedings

T2 - 12th International Conference on Applied Energy, ICAE 2020

Y2 - 1 December 2020 through 10 December 2020

ER -

Thermal Storage Performance of a Dual-Purpose Underground Thermal Battery for Shaping the Electric Demand of Buildings

Abstract

Keywords

UN SDGs

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