Jongyingcharoen, Jiraporn

Preferred name

Jongyingcharoen, Jiraporn

Alternative Name

Jongyingcharoen, Jiraporn Sripinyowanich

Main Affiliation

School of Engineering

Email

jiraporn.jo@kmitl.ac.th

Now showing 1 - 3 of 3

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Combustion study of rice husk under different heating rates by integrating thermogravimetric analysis and decision tree regression
(2025-01-15)
Pambudi, Suluh
;
Jongyingcharoen, Jiraporn Sripinyowanich
;
Saechua, Wanphut
This study investigates the combustion behavior of rice husk using thermogravimetric analysis coupled with decision tree regression. Results indicated that increasing heating rates caused elevated burnout (Tb) and peak temperatures (Tp) while extending the active combustion stage. The optimized decision tree model effectively predicts mass loss, demonstrated by a perfect coefficient of determination (R<sup>2</sup>) of 1 with a low root mean square error (RMSE) of 0.1993 on the validation set. The model's robustness suggested its potential for accurate mass loss prediction in rice husk combustion.
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Effect of torrefaction temperature on energy properties of spent coffee ground
(2020-09-08)
Bangkha, Natthanant
;
Saechua, Wanphut
;
Nuamyakul, Tharathip
;
Jongyingcharoen, Jiraporn Sripinyowanich
The aim of this research was to investigate the effect of torrefaction temperature on 4 energy properties as high heating value (HHV), enhancement factor, solid yield, and energy yield of spent coffee ground (SCG). Four different torrefaction temperatures (200, 250, 300, and 350°C) were selected. Torrefaction process was conducted at the heating rate of 10°C/min. HHV and enhancement factor were the highest when SCG was torrefied at the highest temperature of 350°C. However, at this temperature, solid and energy yields were the lowest. Torrefaction temperature highly affected these four energy properties with R of higher than 0.9. Regression models representing the relationship between torrefaction temperature and HHV and energy yield were HHV = 0.0519T+15.917, R2 = 0.9483 and energy yield =-0.2743T+155.1, R2 = 0.9976. These models are helpful for prediction of the energy properties of SCG undergoing torrefaction process in the studied temperature range.
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Effect of hot air assisted infrared drying on drying characteristics and quality of rice bran pellets
(2018-08-14)
Sansak, Sahachart
;
Jongyingcharoen, Jiraporn Sripinyowanich
The objective of this study was to determine drying characteristics and quality of rice bran pellet subjected to hot air assisted infrared (HA-IR) drying at different levels of infrared (IR) intensity (750 - 3750 W/m<sup>2</sup>) and air temperature (40 - 80°C). The rice bran pellets were dried from 0.18 to 0.08 g water/g dry matter. The maximum drying rate (DR) and drying time were in the ranges of 0.0030 - 0.0165 g water/g dry matter·min and 8 - 54 min, respectively. Higher IR intensity and air temperature resulted in greater maximum DR and shorter drying time. The same trend was also observed for the effective moisture diffusivity (D<inf>eff</inf>) values which were between 0.3103×10<sup>-7</sup> and 2.7603×10<sup>-7</sup> m<sup>2</sup>/s. As compared to the commercial reference sample of dried rice bran pellets, the products of this study had higher oil content and lower FFA content. The oil content was affected by IR intensity only while the FFA content was affected both by IR intensity and air temperature. HA-IR drying could improve drying characteristics of the rice bran pellets and produce better quality of the dried products.