Low cost thermal storage for solar dryers in the Himalayas
(2022) MVKM01 20221Department of Energy Sciences
- Abstract
- Post-harvest losses in the himalayan regions of Nepal and Bhutan are high, and
current drying methods are in need of improvement. This report improves on a
previously developed solar dryer design and evaluates thermal storage solutions
for the ’SolarFood: Reducing post-harvest losses through improved solar drying’ project. This report uses experimental measurements to compare different
dryer configurations, as well as results from previous measurements and experiments to improve the current prototype. The report studies two different solar
dryer prototypes located at Kathmandu University based on the same design.
Previous hypotheses regarding leakage in the solar dryer prototype were partly
solved. Incorporating a thermal storage... (More) - Post-harvest losses in the himalayan regions of Nepal and Bhutan are high, and
current drying methods are in need of improvement. This report improves on a
previously developed solar dryer design and evaluates thermal storage solutions
for the ’SolarFood: Reducing post-harvest losses through improved solar drying’ project. This report uses experimental measurements to compare different
dryer configurations, as well as results from previous measurements and experiments to improve the current prototype. The report studies two different solar
dryer prototypes located at Kathmandu University based on the same design.
Previous hypotheses regarding leakage in the solar dryer prototype were partly
solved. Incorporating a thermal storage system utilizing water as the working
material can increase control over the solar dryer and increase consistency. The
system presented is low-cost and performs adequately. The system is adaptable
to different temperature ranges and requirements and should be applicable for
use with different drying commodities. Previous studies have utilized rocks or
gravel as the working material. A comparison measurement in this report shows
water performs favorably toward rocks or gravel. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/9085069
- author
- Karlsson, Adam LU
- supervisor
-
- Henrik Davidsson LU
- Paula Viola LU
- organization
- course
- MVKM01 20221
- year
- 2022
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- heat storage, solar dryer, solar drying, rock bed storage, thermal storage, pcm, water heat storage, himalayas
- report number
- LUTMDN/TMHP-22/5497-SE
- ISSN
- 0282-1990
- language
- English
- id
- 9085069
- date added to LUP
- 2022-06-08 09:29:44
- date last changed
- 2022-06-08 11:24:45
@misc{9085069, abstract = {{Post-harvest losses in the himalayan regions of Nepal and Bhutan are high, and current drying methods are in need of improvement. This report improves on a previously developed solar dryer design and evaluates thermal storage solutions for the ’SolarFood: Reducing post-harvest losses through improved solar drying’ project. This report uses experimental measurements to compare different dryer configurations, as well as results from previous measurements and experiments to improve the current prototype. The report studies two different solar dryer prototypes located at Kathmandu University based on the same design. Previous hypotheses regarding leakage in the solar dryer prototype were partly solved. Incorporating a thermal storage system utilizing water as the working material can increase control over the solar dryer and increase consistency. The system presented is low-cost and performs adequately. The system is adaptable to different temperature ranges and requirements and should be applicable for use with different drying commodities. Previous studies have utilized rocks or gravel as the working material. A comparison measurement in this report shows water performs favorably toward rocks or gravel.}}, author = {{Karlsson, Adam}}, issn = {{0282-1990}}, language = {{eng}}, note = {{Student Paper}}, title = {{Low cost thermal storage for solar dryers in the Himalayas}}, year = {{2022}}, }