Effects of window opening style on inside environment of solar greenhouse based on CFD simulation

Yachen Sun; En Cai Bao; Chenmeng Zhu; Lulu Yan; Yanfei Cao; Xuanhe Zhang; Jianming Li; Haiwei Jing; Zhirong Zou

doi:10.25165/j.ijabe.20201306.5734

Effects of window opening style on inside environment of solar greenhouse based on CFD simulation

Yachen Sun (Co-first Author)
, En Cai Bao (Co-first Author)
, Chenmeng Zhu
, Lulu Yan
, Yanfei Cao
, Xuanhe Zhang
, Jianming Li
, Haiwei Jing^*
, Zhirong Zou^*

^*Corresponding author for this work

Department of Management

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

10 Citations (Scopus)

127 Downloads (CityUHK Scholars)

Abstract

Solar greenhouse is extensively used in horticultural production in China. Natural ventilation is one of the key technological means to adjust the inside environment of greenhouse, while the effects of window opening styles on the inside environment are still not well understood. In the present study, the temperature and air flow field of five operation styles, namely back roof central opening style (G1), back roof evenly spaced opening style (G2), top roof full opening style (G3), style of G1+G3, and style of G2+G3 were simulated using the CFD method. The results indicated that: (1) the simulated and measured results exhibited favorable agreement, with relative errors within 5%; (2) In the case of the windows opening area was the same and only single ventilation style was applied, back roof full opening style exhibited the best cooling effect. The inside average temperature of the greenhouse with G1 style decreased by 0.5°C and 1.6°C respectively compared with those of greenhouses with G2 and G3. (3) The cooling effect of the style of G2+G3 was more favorable than that of the style of G1+G3. The style of G2+G3 exhibited better cooling effect than the single ventilation styles, with the lowest temperature (27.5°C) and temperature uniformity coefficient (0.36).

Original language	English
Pages (from-to)	53-59
Journal	International Journal of Agricultural and Biological Engineering
Volume	13
Issue number	6
DOIs	https://doi.org/10.25165/j.ijabe.20201306.5734
Publication status	Published - Nov 2020

Research Keywords

CFD modeling
Cooling effects
Solar greenhouse
Window opening styles

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@article{9e1d247b79a546a89c5d0fb4a8cc5bee,

title = "Effects of window opening style on inside environment of solar greenhouse based on CFD simulation",

abstract = "Solar greenhouse is extensively used in horticultural production in China. Natural ventilation is one of the key technological means to adjust the inside environment of greenhouse, while the effects of window opening styles on the inside environment are still not well understood. In the present study, the temperature and air flow field of five operation styles, namely back roof central opening style (G1), back roof evenly spaced opening style (G2), top roof full opening style (G3), style of G1+G3, and style of G2+G3 were simulated using the CFD method. The results indicated that: (1) the simulated and measured results exhibited favorable agreement, with relative errors within 5\%; (2) In the case of the windows opening area was the same and only single ventilation style was applied, back roof full opening style exhibited the best cooling effect. The inside average temperature of the greenhouse with G1 style decreased by 0.5°C and 1.6°C respectively compared with those of greenhouses with G2 and G3. (3) The cooling effect of the style of G2+G3 was more favorable than that of the style of G1+G3. The style of G2+G3 exhibited better cooling effect than the single ventilation styles, with the lowest temperature (27.5°C) and temperature uniformity coefficient (0.36).",

keywords = "CFD modeling, Cooling effects, Solar greenhouse, Window opening styles, CFD modeling, Cooling effects, Solar greenhouse, Window opening styles, CFD modeling, Cooling effects, Solar greenhouse, Window opening styles",

author = "Yachen Sun and Bao, \{En Cai\} and Chenmeng Zhu and Lulu Yan and Yanfei Cao and Xuanhe Zhang and Jianming Li and Haiwei Jing and Zhirong Zou",

year = "2020",

month = nov,

doi = "10.25165/j.ijabe.20201306.5734",

language = "English",

volume = "13",

pages = "53--59",

journal = "International Journal of Agricultural and Biological Engineering",

issn = "1934-6344",

publisher = "Chinese Society of Agricultural Engineering",

number = "6",

}

Effects of window opening style on inside environment of solar greenhouse based on CFD simulation. / Sun, Yachen (Co-first Author); Bao, En Cai (Co-first Author); Zhu, Chenmeng et al.
In: International Journal of Agricultural and Biological Engineering, Vol. 13, No. 6, 11.2020, p. 53-59.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Effects of window opening style on inside environment of solar greenhouse based on CFD simulation

AU - Sun, Yachen

AU - Bao, En Cai

AU - Zhu, Chenmeng

AU - Yan, Lulu

AU - Cao, Yanfei

AU - Zhang, Xuanhe

AU - Li, Jianming

AU - Jing, Haiwei

AU - Zou, Zhirong

PY - 2020/11

Y1 - 2020/11

N2 - Solar greenhouse is extensively used in horticultural production in China. Natural ventilation is one of the key technological means to adjust the inside environment of greenhouse, while the effects of window opening styles on the inside environment are still not well understood. In the present study, the temperature and air flow field of five operation styles, namely back roof central opening style (G1), back roof evenly spaced opening style (G2), top roof full opening style (G3), style of G1+G3, and style of G2+G3 were simulated using the CFD method. The results indicated that: (1) the simulated and measured results exhibited favorable agreement, with relative errors within 5%; (2) In the case of the windows opening area was the same and only single ventilation style was applied, back roof full opening style exhibited the best cooling effect. The inside average temperature of the greenhouse with G1 style decreased by 0.5°C and 1.6°C respectively compared with those of greenhouses with G2 and G3. (3) The cooling effect of the style of G2+G3 was more favorable than that of the style of G1+G3. The style of G2+G3 exhibited better cooling effect than the single ventilation styles, with the lowest temperature (27.5°C) and temperature uniformity coefficient (0.36).

AB - Solar greenhouse is extensively used in horticultural production in China. Natural ventilation is one of the key technological means to adjust the inside environment of greenhouse, while the effects of window opening styles on the inside environment are still not well understood. In the present study, the temperature and air flow field of five operation styles, namely back roof central opening style (G1), back roof evenly spaced opening style (G2), top roof full opening style (G3), style of G1+G3, and style of G2+G3 were simulated using the CFD method. The results indicated that: (1) the simulated and measured results exhibited favorable agreement, with relative errors within 5%; (2) In the case of the windows opening area was the same and only single ventilation style was applied, back roof full opening style exhibited the best cooling effect. The inside average temperature of the greenhouse with G1 style decreased by 0.5°C and 1.6°C respectively compared with those of greenhouses with G2 and G3. (3) The cooling effect of the style of G2+G3 was more favorable than that of the style of G1+G3. The style of G2+G3 exhibited better cooling effect than the single ventilation styles, with the lowest temperature (27.5°C) and temperature uniformity coefficient (0.36).

KW - CFD modeling

KW - Cooling effects

KW - Solar greenhouse

KW - Window opening styles

KW - CFD modeling

KW - Cooling effects

KW - Solar greenhouse

KW - Window opening styles

KW - CFD modeling

KW - Cooling effects

KW - Solar greenhouse

KW - Window opening styles

UR - https://www.scopus.com/pages/publications/85097215577

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85097215577&origin=recordpage

U2 - 10.25165/j.ijabe.20201306.5734

DO - 10.25165/j.ijabe.20201306.5734

M3 - RGC 21 - Publication in refereed journal

SN - 1934-6344

VL - 13

SP - 53

EP - 59

JO - International Journal of Agricultural and Biological Engineering

JF - International Journal of Agricultural and Biological Engineering

IS - 6

ER -

Effects of window opening style on inside environment of solar greenhouse based on CFD simulation

Abstract

Research Keywords

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