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 หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Effect of Temperature on Soybean Quality Using Spouted Bed Technique) ผู้เขียน: Songchai Wiriyaumpaiwong, Somchart Soponronnarit, Somkiat Prachayawarakorn สื่อสิ่งพิมพ์:pdf AbstractThe effect of temperature on moisture reduction rate and soybean qualities using a two-dimensional spouted bed dryer has been studied. Air velocity was varied in a range of 15.86-20.50 m/s, with a fixed holdup of 25 kgs. The soybeans with initial moisture levels varying between 28 and 32% dry basis were dried to 12-17% dry basis using inlet air temperatures of 120-150?C. The experimental results indicate that higher temperatures provide faster moisture reduction rate. The qualities of soybean have also been considered in terms of stress cracking, breakage, urease activity and protein solubility in 0.2% KOH. It is shown that the percentages of cracking and breakage depend on temperature, final moisture content and degree of collision of kernel with deflector. The percentages of stress crack and breakage lie in the range of 50-60% and of 3-24%, respectively. The urease activity and protein solubility are accepted with slightly changing in the protein quality. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Drying of High Moisture Paddy by Two-Dimensional Spouted Bed Technique) ผู้เขียน:Somboon Wetchacama, Somchart Soponronnarit, Thanit Swasdisevi, Somkiat Prachayawarakorn, Jinda Panich-ing-orn, Suchart Suthicharoenpanich สื่อสิ่งพิมพ์:pdf AbstractThe objectives of this research were to design and construct a two-dimensional spouted bed dryer with draft plates, to study drying kinetics of paddy, paddy quality and specific primary energy consumption. Experimental drying conditions were as follows: initial paddy moisture contents (Mi) of 31.1-45.6% dry basis (d.b.), inlet air temperatures (Ti) of 130, 140 and 150?C, hold-ups (H) of 20, 25 and 30 kg. Experimental results showed that minimum spouting velocity of drying air at the inlet of drying chamber was 15.4-16.4 m/s equivalent to velocity through the draft plates of 3.9-4.1 m/s. The operating parameters affecting drying rate and specific primary energy consumption were drying temperature and specific air flow rate or hold-up. Those affecting head rice yield and rice whiteness were initial and final moisture contents of paddy and drying air temperature. The entrance height directly affected energy consumption of the fan. The suitable entrance height was 10 cm as it resulted in minimum energy consumption. The first order polynomial equation was accurate and appropriate for predicting drying rate. |
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หัวเรื่อง:ปัจจัยที่ส่งผลต่อการอบแห้งมะละกอแช่อิ่มในอุโมงค์ ผู้เขียน:Piyarat Noosuk, Somchart Soponronnarit, Tipaporn Yoovidhya, Adisak Nathakaranakule สื่อสิ่งพิมพ์:pdf AbstractThe strategies for papaya glace’ drying in tunnel were investigated. This experiment was performed at the fourth Royal Project Food Processing Section. The optimum conditions of drying, corresponding mathematical models were also evaluate. The criteria set for this stusy included low drying time, low specific enegy consumption and acceptable qualities of papaya glace’. The drying rate obtained from the model of batch tunnel dryer were close to the experimental ones. From the mathematical models, it was found that the optimum conditions of the first step of dyring for the dimension of papaya glace’ of 3.1x7.8x1.4 cm3 and drying temperature of 70oC were specific air flow of 12 kg/h-kg dry papaya glace’ and air recycled of about 70%. In the second step of drying for the dimension of papaya glace’ of 0.98x0.98x0.98 cm3 and drying temperature of 55 oC, it was found that the optimum drying conditions were specific air flow rate of 10 kg/h-kg dry papaya glace’ and air recycled of about 80%. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Development of a Commercial Scale Vibro-Fluidized Bed Paddy Dryer) ผู้เขียน:Somboon Wetchacama, Somchart Soponronnarit, Wuttikon Jariyatontivait สื่อสิ่งพิมพ์:pdf AbstractThe objectives of this research were to design, construct and test a prototype of vibro-fluidized bed paddy dryer with a capacity of 2.5–5.0 tons/h. Experimental drying conditions were: air flow rate 1.7 m3/s (1.9 kg/s), bed velocity 1.4 m/s, average drying air temperature 125–140?C, residence time of paddy approximately 1 minute, bed height 11.5 cm, fraction of air recycled 0.85 (1.6 kg/s) and vibration of intensity 1 (frequency 7.3 Hz and amplitude 5 mm.). It was found that moisture content of paddy was reduced from 28 to 23 % d.b. at a feed rate of 4821 kg/h. Electrical power consumption and average diesel oil consumption were 9646 W and 17.6 1/h, respectively. Specific primary energy consumption was 6.15 MJ/kg-water evap. Electrical power of blower motor and vibrator motor was 55 % as compared to electrical power of blower motor used in fluidized bed drying without vibration. For operation of 12 hours/day and 90 days/year, paddy drying cost was 1.50 baht/kg-water evap. (fixed cost 0.50 baht/kg-water evap. and operating cost 1.00 baht/kg-water evap., US$ 1 = 40 baht). |
 Researcherดร. ลัดดา แสงเดือน วัฒนศิริธรรมที่ทำงาน:ฝ่ายเคมีและกายภาพอาหาร สถาบันค้นคว้าและพัฒนาผลิตภัณฑ์อาหาร สาขาที่สนใจ:Food Analysis, Protein and polysaccharide purification, Antioxidant properties in foods and agricultural products Resume |
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Researcherนาง จุฬาลักษณ์ จารุนุชที่ทำงาน:ฝ่ายกระบวนการผลิตและแปรรูป สถาบันค้นคว้าและพัฒนาผลิตภัณฑ์อาหาร สาขาที่สนใจ:การพัฒนาผลิตภัณฑ์อาหารด้วยกระบวนการเอกซ์ทรูชัน Resume |
 Researcherนาง พัชรี ตั้งตระกูลที่ทำงาน:ฝ่ายเคมีและกายภาพอาหาร สถาบันค้นคว้าและพัฒนาผลิตภัณฑ์อาหาร สาขาที่สนใจ:คุณสมบัติและการแปรรูปข้าวและแป้ง, การควบคุมคุณภาพอาหารทางเคมี Resume |
หัวเรื่อง:การทดสอบการอบแห้งข้าวเปลือกแบบในถังเก็บและแบบเป็นงวด : ความสิ้นเปลืองพลังงาน ผู้เขียน:Somchart Soponronnarit, Somchai Chimsakolthanakorn สื่อสิ่งพิมพ์:pdf AbstractThe objective of this paper was to study the energy consumption patterns in drying paddy under various drying air conditions and drying strategies. It was found from the experiment that ambient air drying with low air flow rate consumed final energy about one half of that drying with high air flow rate. However, they were about the same when primary energy was considered except the ambient air drying with high air flow rate which consumed primary energy much greater than the others. Ambient air low flow rate should be used in slow drying. Ventilation at particular times when relative humidity of drying air was not too high or continuous ventilation with controlled relative humidity should be practiced. If fast drying was required, warm air with high flow rate should be used. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Mathematical Simulation of Longan Fruit Drying) ผู้เขียน:Aree Achariyaviriya, Somchart Soponronnarit, Jirawan Tiansuwan สื่อสิ่งพิมพ์:pdf AbstractThe objectives of this study were to develop a mathematical model and to simulate longan drying for evaluating the optimum conditions. The specific energy consumption and average drying rate were used for the verification of the model. It was found that the simulated results agreed with some of those experiments. The effects on the specific energy consumption of drying air temperature, fraction of air recycled, and specific air flow rate were described. It was found that the specific air flow rate, drying air temperature and fraction of air recycled affect significantly on specific energy consumption. However, the effects of specific air flow rate and drying air temperature on specific energy consumption were small when fraction of air recycled was big. Additionally, it was also concluded that the optimum specific energy consumption of 3.3 MJ/kg-water occurred at fraction of air recycled of 95%, specific air flow rate of 28 kg-dry air/h-kg dry longans, drying air temperature of 75?C and drying time of 33 h. |
หัวเรื่อง:ไม่มีชื่อไทย (ชื่ออังกฤษ : Continuous Drying of Paddy in Two-Dimensional Spouted Bed) ผู้เขียน:Thanid Madhiyanon, Somchart Soponronnarit, Warunee Tia สื่อสิ่งพิมพ์:pdf AbstractAn industrial–scale prototype of spouted bed paddy dryer with a capacity of 3,000 kg/h was constructed and tested. The prototype was shown to be a desirable feature of spouted bed as well as capability of continuous drying and offering consistent results through the testing period. Experimental results showed that the prototype performed well on moisture reduction and milling quality. Head rice yield and whiteness were not significantly changed regardless of using inlet air temperature up to 146?C. At present, feed rate is limited to not exceed 1,000 kg/h and thermal energy consumption is relatively high, i.e. in range of 5.9-8.6 MJ/kg water evaporated. This could be attributed to using of improper blower. The relative results of increasing air velocity and pressure should be studied. |
หัวเรื่อง:การอบแห้งข้าวโพดด้วยเครื่องอบแห้งแบบหมุน : แบบจำลองทางคณิตศาสตร์และแนวทางการอบแห้ง ผู้เขียน:Paiboon Rodviboonchai, Somchart Soponronnarit สื่อสิ่งพิมพ์:pdf AbstractThe objectives of this study are to investigate appropriate operating conditions and to develop a mathematical model for corn drying by a rotary dryer. Experimental results showed that if feed rate, rotating speed, tilt angel of drum or air velocity increased, residence time decreased. Residence time obtained from a developed equation was agreeable with experimental result. A thin layer drying equation confirmed by equations of mass and energy balance could predict drying rate relatively well. Energy consumption varied inversely with hold-up and moisture content of corn. A volumetric heat transfer coefficient depended on hold-up, rotating speed and air velocity. To dry corn with a rotary dryer, a relatively high air temperature and high value of hold-up should be practiced. Drying at a range of low moisture content of corn should be avoided. |