Sensitivity of solar greenhouse envelopes to the thermal disfigurements and optimal selection of the thermal insulation quilt

Authors

  • Yachen Sun College of Architecture and Urban Planning, Tongji University, Shanghai 200092, China; Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture and Rural Affairs, Department of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, Chin
  • Yao Zhang 2. Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Science, Key Laboratory of Protected Agriculture Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China; 3. School of Engineering, Anhui Agricultural University, Hefei 230036, China;
  • Chenmeng Zhu Department of Management, City University of Hong Kong, Tat Chee Avenue Kowloon, Hong Kong 999077, China
  • Shaonan Xu Qinghai College of animal husbandry and veterinary technology, Xining 812100, China
  • Bowen Liu School of Ocean and Earth Science, Tongji University, Shanghai 200092, China
  • Yanfei Cao Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture and Rural Affairs, Department of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
  • Changji Zhou Academy of Agricultural Planning and Engineering, Ministry of Agriculture and Rural Affairs, Beijing 100125, China
  • Yaqi Zhou School of Karst Science, Guizhou Normal University, Guiyang 550001, China
  • Zhirong Zou Key Laboratory of Protected Horticultural Engineering in Northwest, Ministry of Agriculture and Rural Affairs, Department of Horticulture, Northwest A&F University, Yangling 712100, Shaanxi, China
  • Encai Bao Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Science, Key Laboratory of Protected Agriculture Engineering in the Middle and Lower Reaches of Yangtze River, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China

Keywords:

solar greenhouse, thermal disfigurements, optimal selection, thermal insulation quilt

Abstract

The objectives of the present work are focused on exploration of the reasons for temperature difference in different envelopes, the sensitivity of envelopes of solar greenhouse to thermal disfigurements and optimal selection of the thermal insulation quilt. Theoretical analysis and derivation are conducted according to the experimental results of surface temperature, convective heat transfer, and heat flux density in different envelopes which with thermal disfigurements of solar greenhouse using heat transfer theory. The results revealed that the difference of intrinsic thermal conductivity and thickness of the envelopes leads to difference in the thermal flux and thus in the surface temperature of different envelopes. Compared with the front roof and back roof, the wall is more sensitive to thermal disfigurements. According to the influence of thermal disfigurements on solar greenhouse temperature, the allowable thermal disfigurements area fraction of front roof and back roof are given. Based on the analysis of heat transfer theory and test results, the work given the expression of the thickness and thermal conductivity of thermal insulation quilt under different outdoor minimum temperatures for optimal selection of thermal insulation quilt based on comprehensive considering factors of the solar greenhouse structure, crop demand, outdoor minimum temperature, and insulation quilt properties. The results of this work gives technical criterion for whether the envelopes with thermal disfigurements needs to be repaired or replaced, and it also provide theoretical and technical support for design the solar greenhouse as well as methodological guidance for the optimal selection of the thermal insulation quilt. Keywords: solar greenhouse, thermal disfigurements, optimal selection, thermal insulation quilt DOI: 10.25165/j.ijabe.20211405.6311 Citation: Sun Y C, Zhang Y, Zhu C M, Xu S N, Liu B W, Cao Y F, et al. Sensitivity of solar greenhouse envelopes to the thermal disfigurements and optimal selection of the thermal insulation quilt. Int J Agric & Biol Eng, 2021; 14(5): 50–55.

References

[1] Sun Y C, Cao Y F, Wang H T, Zhou C J, Xiao J J, Jiang C Y, et al. Influence of thermodynamic disfigurement on the convective heat transfer of solar greenhouse. Int J Agric & Biol Eng, 2020; 13(4): 55−60.
[2] Ma C W, Wang P Z, Zhao S M, Chen J Y. Thermal insulation quilt materials and performance evaluation of solar greenhouse. Agriculture Engineering Technology, 2018; 38(31): 14−18. (in Chinese)
[3] Kim H K, Ryou Y S, Kim Y H, Lee T S, Kim Y H. Estimating the thermal properties of the cover and the floor in a plastic greenhouse. Energies, 2021; 14(7): 1970−1980.
[4] Sánchez-Guerrero M C, Medrano E, Olmo F D, Lorenzo P. Influence of a passive heating system that combines heat accumulators and thermal screen on the greenhouse microclimate. Acta Horticulturae, 2020; 1271(): 41−46.
[5] Subin M C, Karthikeyan R, Periasamy C, Sozharajan B. Verification of the greenhouse roof-covering-material selection using the finite element method. Materialstoday: Proceedings, 2020; 21(1): 357−366.
[6] Zhou C J, Zhou X Q, Gui J G. Performance analysis on several kinds of insulation pads for solar plastic greenhouse. Transactions of the CSAE, 1999; 15(2): 168−177. (in Chinese)
[7] Ma C W, Wang P Z, Zhao S M, Chen J Y. Thermal insulation quilt materials and performance evaluation of solar greenhouse. Agriculture Engineering Technology, 2018; 38(31): 14−18. (in Chinese)
[8] Jiang L Y, Zhang C H, Yu X Z, Ma Y, M C W. Test and analysis on the performance of heat preservation quilt for greenhouse. Journal of Chinese Agricultural Mechanization, 2017; 38(8): 64−67. (in Chinese)
[9] Zhang J K. Evaluation indices and system of thermal insulation quilt for solar greenhouse. Agriculture Machinery Quality and Supervision, 2008; 4: 30−32. (in Chinese)
[10] Liu C X, Ma C W, Wang P Z, Zhao S M, Cheng J Y, Wang M L. Analysis on affecting factors of heat preservation properties for thermal insulation covers. Transactions of the CSAE, 2015; 31(20): 186−193. (in Chinese)
[11] Liu C X, Ma C W, Wang P Z, Zhao S M, Cheng J Y, Wang M L. Theoretical analysis and experimental verification of heat transfer through thick covering materials of solar greenhouse. Transactions of the CSAE, 2015; 31(2): 170−176. (in Chinese)
[12] Xu D, Li Y, Zhang Y, Xu H, Liu X. Effects of orientation and structure on solar radiation interception in Chinese solar greenhouse. PLoS One, 2020; 15(11): e0242002.
[13] Sobota T. Fourier's law of heat conduction. Springer Netherlands, 2014.
[14] Li Z, Xiong S, Sievers C, Hu Y, Fan Z, Wei N, Bao H, Chen S, Donadio D, Ala-Nissila T. Influence of Boundaries and Thermostatting on Nonequilibrium Molecular Dynamics Simulations of Heat Conduction in Solids. The Journal of Chemical Physics, 2019; 151: 234105.
[15] Bal H, Jannot Y, Gaye S, Demeurie F. Measurement and modelisation of the thermal conductivity of a wet composite porous medium: Laterite based bricks with millet waste additive. Construction & Building Materials, 2013; 41: 586−593.
[16] Wardi F, Cherki A. B, Mounir S, Khabbazi A, Maaloufa Y. Thermal characterization of a new multilayer building material based on clay, cork and cement mortar. Energy Procedia, 2019; 157: 480−491.
[17] Modest M F. Radiation combined with conduction and convection. Radiative Heat Transfer. San Diego: Elsevire Science, 2003; pp. 680−727
[18] Chen D S, Zheng H S, Liu B Z. Comprehensive study on the meteorological environment of sunlighlt greenhouse. Transactions of the CSAE, 1990; 6(2): 77−81. (in Chinese)
[19] Liu H. A new linear relationship of average specific heat capacity and temperature of gas. Inner Mongolia Petrochemical Industry, 2013; 11: 13−15. (in Chinese)

Downloads

Published

2021-10-13

How to Cite

Sun, Y., Zhang, Y., Zhu, C., Xu, S., Liu, B., Cao, Y., … Bao, E. (2021). Sensitivity of solar greenhouse envelopes to the thermal disfigurements and optimal selection of the thermal insulation quilt. International Journal of Agricultural and Biological Engineering, 14(5), 50–55. Retrieved from https://ijabe.migration.pkpps03.publicknowledgeproject.org/index.php/ijabe/article/view/6311

Issue

Vol. 14 No. 5 (2021): IJABE

Section

Animal, Plant and Facility Systems

License

IJABE is an international peer reviewed open access journal, adopting Creative Commons Copyright Notices as follows.


Authors who publish with this journal agree to the following terms:


  1. Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

  2. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.

  3. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).