จำนวน Repository ( 3611 )

การออกแบบและพัฒนาการควบคุมแรงดันไฟฟ้าส่วนเกิน
การออกแบบและพัฒนาการควบคุมแรงดันไฟฟ้าส่วนเกิน

The purpose of this research is to facilitate technology of limiting excess electricity from the source before supplying to the electrical appliances. The distribution of electricity by Metropolitan Electricity Authority (MEA) frequently exceeds the needs of households and factories due to the fact that the voltage has to be enough to send electricity to users who are located further at the end of the voltage grid lines. Most electrical appliances are designed to perform at optimum voltage of 220 Volt. The voltage optimization system controls the incoming voltage to fit the optimum voltage of electrical appliances which will reduce the overheating phenomenon and thus lengthen the lives of electrical appliances. It can save 8-14% of total energy being consumed and potentially reduce CO2 emission. This analysis system can be used for industries in the range of small to large companies. From the development of remote monitoring using a control via internet or 3G/4LTE the voltage optimization system showed practical power saving results of the reduced power usage and lengthen the lives of electrical appliances; that leads to reduction of emerging electricity resource eradication of natural resources increase the chance of marketing competition and energy sustainable

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ผลิตภัณฑ์น้ำชะครามพร้อมดื่ม
ผลิตภัณฑ์น้ำชะครามพร้อมดื่ม

The purpose of the research entitled Product Development: suaeda maritima RTD was to study the appropriate amount of water and brown sugar used in the production process’ and the change during storage It was found that the product using1:10.05 of boiled (excess water squeezed out) suaeda maritima leaves to water (w/w) and 5% of brown sugar to the juice weight was accepted most in all aspects: appearance color flavor taste texture(mouth feel) overall preference; the mean scores were 7.46 7.53 7.73 7.63 7.55 and 7.68 respectively. This indicated that the product was very much and most accepted. The lightness (L*) the greenness (a*) and the yellowness (b*) were at 18.34 -9.95 and 19.51. The soluble solid Brix was 6.60; and the pH-alkalinity (pH) was 6.91. The product was best kept at 7 ºc for not longer then 7 days when there was still no physical or chemical change. All the microorganisms found did not exceed the Ministry of Public Health standard 2013. One hundred grams of the product contained 24.00 kcal 5.79 g carbohydrate 0.22 g protein 0.80 g fiber 8.40 g calcium 0.20 g iron and 14.00 mg iodine 84.00 sodium μg 1056.04 μg beta-carotene 360.00 μg phenolic compound of Alice and 1160.00 μg chlorophyll. The consumers’ test result indicated that most consumers accepted the product at the moderate level; and 94% of them were interested in buying at 20 baht per 180 ml glass bottle of the product

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การออกแบบและพัฒนาอุปกรณ์ลดระยะทางการยกเบาะนั่ง ในโรงงานผลิตรถยนต์
การออกแบบและพัฒนาอุปกรณ์ลดระยะทางการยกเบาะนั่ง ในโรงงานผลิตรถยนต์

This research aimed to study the design and development to assist in bringing the car seat into the production process and the risk assessment approach to ergonomics to suit operator. Emphasizing the importance of work and trying to create design tools. Organize work appropriately in accordance with the competency and performance of each individual. Using the principles of biomechanics analysis applied in the analysis along with an assessment of the risks by taking into consideration upon 3 factors. 1. The level of severity. 2. The level of frequency.3. Safety measures at the different parts of the body due to which the body must be borne from the outside and in the work. By bringing knowledge of mechanics the proportion of the body anatomy and physiology is able to create the relationship in a model way of Ergonomics which occurs according to the gesture. The use of tools lifting heavy parts and labor pull push and press researchers found in the process of lifting car seat weighs 14.5 kg dimensions width 45 cm length 55 cm and 100 cm in height is the distance of the car seat to shelve. Assembly point distance of 200 cm research has fixed this issue by adjusting the distance of the car seat and shelves by only 50 cm distance can be reduced down to 150 cm and adjust the position of the lifting cushion to reduce twisting torso while assess the biomechanics model of the behavior of all employee in improvement on quality both before and after work station.

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การพัฒนาผลิตภัณฑ์เปลือกกล้วยน้ำว้าแช่อิ่มอบแห้ง
การพัฒนาผลิตภัณฑ์เปลือกกล้วยน้ำว้าแช่อิ่มอบแห้ง

This research aimed to investigate the suitable method to product osmotically dehydrated banana peels and determine its shelf life as well as consumer acceptation. It was found that the proper method was the slow osmotic dehydration process with 30 40 and 50% of syrup (sucrose solution). This method led to the highest appearance color and flavor scores as accessed by the consumer. Therefore the slow osmotic dehydration process was selected for further study relating to the ratio between salt and malic acid (3:2 3:3 and 2:3 of syrup weight). The result show that no differences in appearance color flavor and texture scores were found among treatments however the sample treated with salt and malic acid in the ratio of 3:3 obtained the highest taste score. Thus the suitable process to produce the osmotically dehydrated banana peels was slow process with salt and malic in the ratio 3:3. According to the shelf life study the sample (100g) packed in metallic foil still compiled with Thai community standard of fruit and vegetable products during 12 weeks of storage under 25-30 °C. In addition the consumers also accepted the selected osmotically banana peel product.

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การออกแบบและพัฒนาเครื่องแลกเปลี่ยนความร้อนระหว่างน้าดีกับน้าเสีย กรณีศึกษา สายการผลิตกุ้งแช่แข็ง
การออกแบบและพัฒนาเครื่องแลกเปลี่ยนความร้อนระหว่างน้าดีกับน้าเสีย กรณีศึกษา สายการผลิตกุ้งแช่แข็ง

The research objective is to utilize the waste water at 12ºC to 20ºC in exchange with the process water at the temperature of 29ºC. After entering the heat exchanger the process water will have the reduced temperature of 19ºC and then will be delivered to the cooler so the temperature of the process water will further be reduced to 15ºC to involve in the production process. Consequently the cooler’s energy use is lower. Since the common coolers used in these days have problems about the clogged system caused by shrimp residue the cleanup of the system is difficult and the maintenance cost is high. With this problem the research and development of the new heat exchanger is carried out resulting to the Shell and Tube Heat Exchanger type with the angled lid and the waste water flow control pads allowing the water alternatingly running through the lower part and upper part of each pad. The process water will flow in the 6 sets of the stainless tubes with 2 mm. thickness ½ inch diameter and 6 meter length. The space between the set is 5 centimeters for exchanging heat with the waste water flowing outside the tubes. The study conclusion is that the new heat exchanger can reduce the temperature of the process water to 19ºC so it can save the electricity cost of the cooler for 886485 baht per year and make the cleanup easier without taking off the equipment parts thus lowering the maintenance cost as well.

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