Application of green energy in smart rural passive heating: A case study of indoor temperature self-regulating greenhouse of winter in Jinan, China

XiaoLong Wang, GuoChen Sun, LinHua Zhang, WenJun Lei, WenKe Zhang, HaoYi Li, ChunYue Zhang and JingChenxi Guo

Energy, 2023, vol. 278, issue C

Abstract: As an essential facility for crop growth, the greenhouse creates an indoor microclimate that affects not only the growth quality of vegetation, but also the energy consumption and carbon emission of agriculture. China's agriculture has long been restricted by the traditional nature-dependent mode and lacks an comprehensive theoretical brace for the design and reform of greenhouses. Based on the exothermic and endothermic principle of phase change materials (PCM(s)), this study mainly focuses on the implantation of PCM(s) layers into the envelopes of an actual greenhouse for passive heating. A dynamic simulation of the whole-day indoor temperature self-regulation performance of the greenhouse was performed, and the calculation model was verified. Results show that the embedding of PCM(s) layer in the envelope structure can cut down the high temperature (>30 °C) during daytime and release heat to indoor delayed at night for warming up around 1–2 °C. The north wall is the key component for laying PCM(s), and the critical thickness is the best thermal performance thickness for heating effect. This design solely relies on solar energy with zero carbon emission, and allows for winter passive heating.

Keywords: Greenhouses; Passive heating; Phase change materials; PCM; Solar energy; Thermal storage wall; Rural development (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:278:y:2023:i:c:s0360544223011647

DOI: 10.1016/j.energy.2023.127770

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