The purpose of this research is to develop a hot air dryer using waste heat from a200 liter kiln for drying bananas and to investigate its drying performance. The main parts of the dryer consist of the drying chamber that has dimensions 0.71x0.83x.091 m3 the air circulation system and a heat exchanger which receives waste heat from the exhaust tube and kiln surface. The dryer was developed by designing a drying chamber on the top of a 200 liter kiln to reduce heat lost in the structure and an exhaust gas heat exchanger was developed using groups of copper tubes for increasing then heat transferred to the air. The drying performances were analyzed by measuring specific drying rates and specific energy consumption. Experiments were performed under different temperatures of 60 70 and 80℃ And at a constant velocity of 1.8 ms-1. Eucalyptus was selected as the heat source. Thirty kg of peeled bananas were prepared at an initial moisture content of 241.19±31.50% dry basis and were dried until to final moisture content of 48.47±10.46% dry basis. All experiments were carried out in duplicate. For temperatures of 60 70 and 80 ℃ the ave age specific drying rates were 0.085±0.0004 0.114±0.0009 and 0.1277±0.010 kg water h-1kesolid-1 and the average specific energy consumptions were 1.42±0.055 1.21±0.355 and 1.04±0.074 MJ/kg water respectively. Some dried bananas had burned at a temperature of 80℃ so at temperature of 70 ℃ was the optimal condition in this experiment. This produced good color a high specific drying rate and low specific energy consumption.

The objectives of this research were to develop of transmission line calculation program based on usage and frequency consisting of the two-wire transmission line twisted pair transmission line and coaxial transmission line. The program was developed in the form of graphical user interface in Malta. The developing and testing results found that the program was correctly capable to calculate capacity conductance inductance resistance and impedance for each transmission line usage and frequency. The results from the program with black box testing by five experts and twenty system users found the average and the standard deviation of results form computer experts were 4.04 and 0.36 respectively while those of results form the system users were 3.88 and 0.48 respectively. Conclusion it showed that the efficiency of the calculation program was a high level and can be used as a teaching and learning as well.

Development of prototype products from waste rice for teenage consumer. The purpose of this study was developing formula and prototype of waste rice for food production. The waste rice could be used as rice in 100% for 3 products such as Khao Tang Rice Crackers and Sticky Rice Coconut Cream. The suitable condition for Khao Tang was using waste rice as 110 g. and seasoning 10%. The result of physical and chemical analysis showed that: products have orange bright color hardness cripyness and not rancidity. The percentage of moisture fat protein crude fiber ash and carbohydrate content 4.02 ± 0.06 20.12 ± 0.05 9.36 ± 0.04 2.58 ± 0.12 4.30 ± 0.11 and 59.62 ± 0.09 respective. The suitable condition for Rice Crackers was using waste rice as 130 g. storage in room temperature at 24 hr. After that place to microwave at 20 sec. %. The result of physical and chemical analysis showed that: products have orange bright color Tom Yum seasoning for delicious hardness cripyness and not rancidity. The percentage of moisture fat protein crude fiber ash and carbohydrate content 6.69 ± 0.03 1.65 ± 0.06 5.23 ± 0.07 0.93 ± 0.13 1.37 ± 0.08 and 84.12 ± 0.05 respective. The suitable condition for Sticky Rice Coconut Cream was using coconut milk (UHT) as 175 g. storage in freeze at 24 hr. After that place to microwave at 30 sec. %. The result of physical and chemical analysis showed that: products have white-yellow bright color softness and coconut sweet taste. The percentage of moisture fat protein crude fiber ash and carbohydrate content 43.55 ± 0.03 6.29 ± 0.02 3.21 ± 0.03 1.20 ± 0.06 0.50 ± 0.09 and 45.24 ± 0.05 respective. The shelf life of 3 products are more than 2 months and consumer acceptability like moderately product.

This study explored batik cotton coated by stabilizing substance made of three kinds of plant and animal including gum arabic powdered gelatin and carboxymethyl cellulose or CMC at a ratio of 15 grams of stabilizer per 3300 ml. of water. The stickiness was tested using the electron microscope SEMScaning able to be 1000 times enlarged and Shirley Stiffness Tester was used to test for the stiffness to measure the bending length of the fabric. It was found that the gelatin from animals could coat the surface the best. The fabric bending length demonstrated the average warp yarn of 4.78 cm and weft yarn of 4.92 cm. Subsequently the fragrance was added with 25 ml of micro-capsules and bound with 10 ml binder per 1000 ml water. After leaving that for one day and 30 days the amount of microcapsules attached to the fabric was investigated. It was found that the microcapsules of powdered gelatin stack on the batik cotton the most followed by gum arabic and carboxymethyl cellulose or CMC respectively. The fabric bending length of warp yarn was 5 .8 2 and weft yarn was 4 .7 0 . Concerning the washing endurance for one two or three times itสถาบันอุดมศึกษา was found that the microcapsules stack on batik cotton coated by powdered gelatin the most followed by gum arabic and carboxymethyl cellulose or CMC respectively. Therefore the batik coated with powdered gelatin was considered suitable for the production of flowered garlands and flower crafts as special occasion gifts. Also the knowledge could be transferred to the professional arts cooperative groups in Nonthaburi. The results of the training were satisfying revealing the average satisfaction towards officers’ service at 4.87 speakers or trainers at 4.87 procedures at 4 .8 0 facilities at 4 .8 6 benefits at 4 .82 and average satisfaction in the overall at 4 .9 3 . The participants were highly satisfied at 98.00% and 100.00% for the application.

The objective of this research was to design and development of a continuous flow paddy dryer with infrared radial radiation technique. The prototype of dryer consists of two concentric circular cylinders cylinders which the paddy drying chamber is height of 1 m. The inner cylinder has diameter of 26.5 cm made from glasses and outer cylinder has diameter of 29.5 cm made from perforated (1.75 mm) steel sheet. At the center of cylinders installed 1200 w of electric infrared heater. A hopper was installed on the top of the chamber while 120 w of blower and paddy flow control were installed at bottom of chamber. The performance of the dryer in terms of specific energy consumption (SED) drying rate (DR) and quality of paddy i.e. head rice yield (HRY) and whiteness index (WI) were evaluated by drying 15 kg of paddy with initial moisture content of 23-26% (w.b.) by using the drying conditions of 80oC of drying chamber temperature 1.075 m3/min of air flow rate and 0.837 1.228 1.875 and 2.308 kg/min of paddy flow rate. The results found that paddy flow rate at 1.875 kg/min is the optimum condition because gave the highest DR lowest SEC and rice qualities (HRY and WI) closely to control.