Effects of weather on temperatures of the grain bin components and headspace of a 10-m diameter corrugated steel bin

Canadian Biosystems Engineering

article

Vimala S. K. Bharathi¹  Fuji Jian¹  Digvir S. Jayas¹ 

[1] Department of Biosystems Engineering, University of Manitoba

关键词: Grain bin;    headspace temperature;    roof temperature;    floortemperature;    climate change;    wheat.;   

DOI  :  10.7451/CBE.2022.64.3.1

学科分类：农业科学（综合）

来源: Canadian Society of Agricultural Engineering

【 摘 要 】

The mean global temperatures are increasing as a result ofclimate change. To understand how the change in ambientweather influences the temperature of the stored grain, thetemperature fluctuation patterns of the floor, roof,sidewalls, and headspace were monitored from mid-August2019 to the end of October 2021 in Winnipeg, Canada. Thebin was filled with 300 t of wheat at an initial averagemoisture content of 12.5 ± 0.1% (wet basis). Thethermocouples were installed at 17, 9, and 12 locations onthe floor, roof (outside), and sidewalls (outside) of the bin,respectively. Sixteen temperature and relative humiditysensors were installed at different locations with varyingdistances from the surface of the grain in the headspace. Theambient weather (air temperature (°C), relative humidity(%), barometric pressure (kPa), average solar radiation(W/m2), precipitation (mm), wind speed (m/s), and winddirection (degrees with reference to the north)) were alsomeasured near the bin during the study period.The temperatures of the roof, sidewalls, and headspacewere influenced by the ambient temperature and solarradiation. In Year II (November 2020 – October 2021), thefloor, roof, sidewalls, and headspace temperatures werehigher by 2.1 ± 0.1°C, 3.9 ± 0.1°C, 3.5 ± 0.2°C, and 1.9 ±0.1°C than that in Year I (November 2019 - October 2020),respectively. The ambient temperature increased by 1.8°Cin year II, compared to year I. These results can be used inthe prediction of temperatures in grain bins caused byweather changes.

【 授权许可】

CC BY