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Optimal Planning of Urban Building-Type Integrated Energy Systems Considering Indoor Somatosensory Comfort and PV Consumption

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  • Guangzeng You

    (Power Grid Planning and Construction Research Center, Yunnan Power Grid Co., Ltd., Kunming 130022, China)

  • Peng Sun

    (Power Grid Planning and Construction Research Center, Yunnan Power Grid Co., Ltd., Kunming 130022, China)

  • Yi Lei

    (Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610213, China)

  • Donghui Zhang

    (Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610213, China)

  • Haibo Li

    (Sichuan Energy Internet Research Institute, Tsinghua University, Chengdu 610213, China)

Abstract

Building energy consumption is the main urban energy consumption component, which mainly serves people-centered work and living energy demands. Based on the physical requirements of humans in urban buildings and to determine the comfortable body temperature in each season, this paper establishes a sizing optimization model of building-type integrated energy systems (IES) for sustainable development, where the cooling and heating loads required to maintain indoor somatosensory body comfort temperature are calculated. Depending on the external energy price, internal power balance, and other constraints, the model develops an optimal sizing and capacity-planning method of energy conversion and storage unit in a building-type IES with PV generation. The operating principle is described as follows: the PV generation is fully consumed, a gas engine satisfies the electric and thermal base load requirements, and the power system and a heat pump supply the remaining loads. The gas price, peak-valley electricity price gap, and heat-to-power ratio of gas engines are considered important factors for the overall techno-economic analysis. The developed method is applied to optimize the economic performance of building-type IES and verified by practical examples. The results show that using the complementary characteristics of different energy conversion units is important to the overall IES cost. A 300 kW building photovoltaic system can reduce the gas engine capacity from 936.7 kW to 854.7 kW, and the annual cost can be approximately reduced from 7.82 million to 7.50 million RMB yuan.

Suggested Citation

  • Guangzeng You & Peng Sun & Yi Lei & Donghui Zhang & Haibo Li, 2024. "Optimal Planning of Urban Building-Type Integrated Energy Systems Considering Indoor Somatosensory Comfort and PV Consumption," Sustainability, MDPI, vol. 16(1), pages 1-20, January.
    • Handle: RePEc:gam:jsusta:v:16:y:2024:i:1:p:411-:d:1312264
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