A quasi-steady state model for predicting the heating requirements of conventional greenhouses in cold regions

被引：56
作者：
Ahamed M.S. [1 ]
Guo H. [2 ]
Tanino K. [3 ]
机构：
[1] Division of Environmental Engineering, University of Saskatchewan
[2] Department of Mechanical Engineering, University of Saskatchewan
[3] Department of Plant Sciences, University of Saskatchewan
来源：
Information Processing in Agriculture | 2018年 / 5卷 / 01期
关键词：
Evapotranspiration; Heating model; Solar radiation; Supplemental lighting;
D O I：
10.1016/j.inpa.2017.12.003
中图分类号：
学科分类号：
摘要：
A time-dependent, quasi-steady state thermal model (GREENHEAT) based on the lumped estimation of heat transfer parameters of greenhouses has been developed to predict the hourly heating requirements of conventional greenhouses. The model was designed to predict the hourly heating requirements based on the input of greenhouse indoor environmental control parameters, physical and thermal properties of crops and construction materials, and hourly weather data including temperature, relative humidity, wind speed, and cloud cover. The model includes all of the heat transfer parameters in greenhouses including the heat loss for plant evapotranspiration, and the heat gain from environmental control systems. Results show that the predicted solar radiation data from the solar radiation sub-model are a reasonable fit with the data from the National Solar Radiation Database (NSRDB). Thermal analysis indicates environmental control systems could reduce 13–56% of the total heating requirements over the course of a year in the study greenhouse. During the winter season, the highest amount of greenhouse heat is lost due to conduction and convection, and the heat used for evapotranspiration is dominant in the summer. Finally, the model was validated with actual heating data collected from a commercial greenhouse located in Saskatoon, and the results show that the model satisfactorily predicts the greenhouse heating requirements. © 2018 China Agricultural University
引用
收藏
页码：33 / 46
页数：13
相关论文
共 67 条
  • [1] (2008)
  • [2] Spencer R., (2009)
  • [3] Chiapale J.P., Kittas C., Estimation regionale des besoins de chauffage des serres, Acta Hortic, 115, pp. 493-503, (1981)
  • [4] Morris L.G., Some aspects of the control of plant environment, J Agric Eng Res, 1, pp. 156-166, (1956)
  • [5] Sethi V.P., Sumathy K., Lee C., Pal D.S., Thermal modeling aspects of solar greenhouse microclimate control: a review on heating technologies, Sol Energy, 96, 1, pp. 56-82, (2013)
  • [6] Hill J.M., Dynamic modeling of tree growth and energy use in a nursery greenhouse using Matlab and Simulink, (2006)
  • [7] Chandra P., Albright L.D., Analytical determination of the effect on greenhouse heating requirements of using night curtains, Trans Am Soc Agric Eng, 23, pp. 994-1000, (1981)
  • [8] Jolliet O., Danloy L., Gay J.B., Munday G.L., Reist A., HORTICERN: an improved static model for predicting the energy consumption of a greenhouse, Agric For Meteorol, 55, 3-4, pp. 265-294, (1991)
  • [9] Breuer J.J.G., Short T.H., Greenhouse energy demands comparisons for the Netherlands and Ohio, USA. Acta Hortic, 174, pp. 145-154, (1985)
  • [10] Fitz-Rodriguez E., Kubota C., Giacomelli G.A., Tignor M.E., Wilson S.B., McMahon M., Dynamic modeling and simulation of greenhouse environments under several scenarios: a web-based application, Comput Electron Agric, 70, 1, pp. 105-116, (2010)
1234567