基于性能化设计的近零能耗建筑多能—储能系统协同耦合与调控机理研究
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1.Design and optimization of a novel dual source heat pump unit in a nearly-zero energy building
- 关键词:
- Air source heat pumps;Budget control;Evaporators;Geothermal heat pumps;Pumps;Air sources;Design and optimization;Dual-source heat pumps;Ground source;Heat pump unit;Low-Carbon Buildings;Multi energy;Photovoltaic thermals;Severe cold regions;Systems performance
- Lei, Zhang;Guohui, Feng;Kailiang, Huang;Shasha, Chang;Ainong, Li
- 《18th IBPSA Conference on Building Simulation, BS 2023》
- 2023年
- September 4, 2023 - September 6, 2023
- Shanghai, China
- 会议
For the development of low-carbon buildings, a novel heat pump unit is developed to improve coupled system performance and stability. PVT (photovoltaic/thermal), air, and ground sources were combined organically to establish a photovoltaic/thermal dual-source heat pump (PVT-DSHP) system experimental platform, which can realize flexible switching of multi-energy sources. The PVT-DSHP model was simulated, which has been validated with experimental data. The system performance and influencing factors of the DSHP units are further studied and discussed. The results indicate that the DSHP unit can stably run in the nearly-zero energy building (NZEB) in severe cold region. Meanwhile, the combination of PVT and DSHP not only improve the power efficiency of PVT, but also improve the unit performance by 8.0%. The system performance of the optimized PVT-DSHP system increases from 2.82 to 3.14 by single-criterion optimization, which increases by 11.35%. Moreover, the matching mode of the DSHP unit in severe cold region should be guaranteed: (1) the actual area of air source evaporator should be 2.0 times of the theoretical area. (2) The actual area of ground source evaporator should be 0.5 times of the theoretical area. (3) The rest of the equipment can be chosen according to budget in the premise of ensuring the stable operation of the DSHP unit. This study contributes to the wide application and promotion of multi-energy coupled technology in architecture. © 2023 IBPSA.All rights reserved.
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