Hot Air Drying Machine Set with Raspberry Pi
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Abstract
This research is the development of hot air herbal dryer model from the experiment using 3 types of hot air herbal dryers: (i). Factory hot air dryer (ii). Improved hot air dryer and (iii). Reverse hot air dryer. The two herbs, turmeric and lemongrass, were dried to 350 grams, divided into 4 layers, 87.5 grams each, at a drying temperature of 70 degrees Celsius, and for 540 minutes. In the weight test after drying herbs, it was found that the hot air herbal dryer model 3 could dry all layers of herbs thoroughly because the weight measurement of herbs in each layer was the closest. Lemongrass weighed a total of 49 grams and turmeric weighed 55 grams, which were less than the hot air herbal dryer models 1 and 2. The drying of herbs to measure the final moisture after drying took 9 hours, while the herbal dryer model 3 took 7 hours, which was less than the models 1 and 2, which had a difference of 2 hours. After drying, And the moisture content of the herbs that were baked, Type 1 and Type 2, were different from Type 3 in both samples. Turmeric had a moisture content of 16.14% when comparing Type 1 and Type 2 to Type 3, and lemongrass had a moisture content of 13.9% when comparing the same. In conclusion, Type 1 and Type 2, when compared to Type 3, had a baking time difference of 2 hours, and the moisture content when comparing lemongrass, where Type 3 was able to repel moisture better than Type 1 and Type 2.
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References
T. Thongkeun. (2020). Development of herbal products according to community product standards that affect consumer purchasing intention behavior: A case study of the health massage group, Khlong Kang Temple, Mueang District, Nakhon Sawan. Journal of Academic and Social Science Research. 15, 17-28.
U. Thawilrak et al. (2010). Effect of drying on total phenolic compounds and antioxidant activity of Bitter melon, Olive and Andrographis paniculata. Kasetsart Journal of Natural Science. 41: 1 (Special), 560-563.
P. Pintana. (2019). Efficiency of rice cracker drying system using a hybrid heat energy source. Uttaradit Rajabhat University Academic Journal. 14(1), 27-38.
R. Kavan et al. (2018). Determination of drying rate of jackfruit using vacuum infrared dryer. Journal of Industrial Technology, Lampang Rajabhat University. 11(2), 67-77.
A. Saenwan et al. (2016). A study of heat transfer through building walls: a case study of wood-plastic composite materials. Journal of Architecture, Khon Kaen University. 15(2), 161-173.
C. Techo et al. (2018). Estimation of natural heat transfer coefficient of banana and purple taro dried using solar energy. Srinakharinwirot University Journal (Science and Technology). 10(20), 1-12.
S. Jangso. (2020). Development of production process and shelf life extension of Khao Lam in Mueang District, Nakhon Pathom Province. Walailak Research and Development Journal under Royal Patronage. 15(2), 1-15.
Post-Harvest Technology Innovation Center (2003). Water activity and shelf life control of food products.
N. Sonjapo. (2021). A comparative study of the accuracy and precision of temperature sensors for IoT applications in different environments. Sripathum University. Sripathum Academic Journal. Chonburi. 17(4), 80-90.
M. Chanthakrajang. (2010). Improving the efficiency of heating small iron crucibles by using electricity. Energy Research Journal. 9, 33-47.
W. Thammasiriroj. (2006). Analysis of characteristics of floating buck converter circuit at steady state. Industrial Technology Academic Journal. 2(1), 14-21.
T. Onbunuea. (2019). Automatic goat milking control system using Raspberry board. Eastern Asia University Academic Journal. 13(1), 182-195.
W. Monatrakulwirun et al. (2018). Design and development of a rotary tray hot air dryer for commercial dry food production. Journal of Farm Engineering and Technology. 4(2), 49-59.
S. Thirawanichkul et al. (2013). Drying of pandan leaves and lemongrass for herbal tea production using various heat energy sources. The 14th National and 6th International Conference of the Agricultural Engineering Association of Thailand. 570-577.
S. Duangporn et al. (2019). Drying of golden bananas using a solar dryer combined with infrared. Phetchaburi Rajabhat University Science Journal. 16(1), 12-24.
