| Issue |
E3S Web Conf.
Volume 116, 2019
International Conference on Advances in Energy Systems and Environmental Engineering (ASEE19)
|
|
|---|---|---|
| Article Number | 00064 | |
| Number of page(s) | 7 | |
| DOI | https://doi.org/10.1051/e3sconf/201911600064 | |
| Published online | 24 September 2019 | |
The influence of crop dryer operation parameters on the efficiency of energy recovery from extract air
1
Wrocław University of Science and Technology, Department of Air Conditioning, Heating, Gas Engineering and Air Protection, ul. Norwida 4/6, 50-373 Wrocław, Poland
2
Max Fordham, 42-43 Gloucester Cres, Camden Town, London, NW1 7PE, United Kingdom
* Corresponding author: aleksandraprzydrozna@gmail.com
Crop drying, especially maize drying, occurs at low external air temperatures, which are lower than the extract air temperature. Therefore, using heat exchangers, to recover thermal energy from the extract air to preheat the cold and dry external air, results in a significant reduction in the primary energy demand for crop drying. The measurements of air parameters in the crop dryer, with a drying capacity of 19 Mg/h of maize, confirm the assumptions undertaken for the production of the heat recovery system. We apply the cross-counter-flow surface heat exchanger system to provide a significant improvement in the efficiency of crop drying. We perform the analysis of the thermal energy recovery system operation. Our results indicate the influence of the drying air set-point and the crop specific humidity on the efficiency of energy recovery from the exhaust air. We performed our measurements at different drying air temperature set-points and different crop relative humidity.
© The Authors, published by EDP Sciences, 2019
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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