จำนวน Repository ( 3611 )

Simulations in Sheet Metal Forming Industry for the 21st Century
Simulations in Sheet Metal Forming Industry for the 21st Century

High petroleum cost nowadays and expectedly in the future is a major force driving the cost up in every industrial sector. In metal forming industry tooling design is a very important and costly process in the design and development phase. By a traditional means trial-and-error approach requires continuous corrections causing many problems to manufacturers since tooling corrections and real scale experiments are very costly and inefficient consumption of limited natural resources. As a result simulations via computer models play an important role in the present time. An important tool to this problem solving in the sheet metal forming industry is a nonlinear finite element method. When it works together with proper material models it has potential and is suitable for applications in the current 21st century to efficiently analyze and design manufacturing processes especially in sheet metal forming.

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Technology Transfer on Banana Flour and Food Products
Technology Transfer on Banana Flour and Food Products

The project aimed to construct and disseminate knowledge on banana flour and food products through media; to transfer technology by conducting the workshop training on banana flour and food products and to follow up knowledge implementation for community market testing. Project was done by preparing contents materials equipments sites taking photos gathering data producing original media producing VCD training need analysis preparing training program evaluating and following up the training achievement. The result of the project was found that 500 VCD cases were constructed for 85 trainees. Percentages of the project achievement was 99.16%. There was a significant difference between pre-test and post-test of the knowledge at .05 level. Mean of the achievement in creating quality work was at 4.30. The achievement percentages of implementing how to make banana flour baked dessert and Thai dessert for community market testing was 12.5%.

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Technology Transfer to Community for Existing Career Development and New Career Creation
Technology Transfer to Community for Existing Career Development and New Career Creation

This project has three main purposes: to provide training courses for producing and packaging of food textile craft and handicraft community products; to conduct a workshop for initial quality evaluation of community products and their packages; and to encourage the community to develop its products according to Thai Community Product Standard. The methodology of the project included assessing need for technology transfer; preparing the project; appointing the committee; recruiting trainees; inviting speakers; preparing instructors documents place and facilities; conducting the training course; and following up project achievement. Results from the 20 training courses with 204 target trainees revealed satisfaction in training at the level of 83.20%. About 46.15% of the trainees were ready for the community product standard guarantee and 33.17% were able to create new careers.

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Using Condensate Water to Reduce Heat for Finned-Tube Condenser of Air Conditioning System
Using Condensate Water to Reduce Heat for Finned-Tube Condenser of Air Conditioning System

Now a day the mostly air condition are use vapor compression refrigeration system in which R-22 refrigerant is used as a working substance. From the results of study it found that the quantity of water vapor or moisture in the air is condensed with in the fan coil unit while through out the evaporator. The fluid after condense is called condensed water. By this process the quantity of condensed water is increases when the air condition is used in the long time. To increase the utility the condensed water is recovered for the heart reduction in the finned-tube condenser. The experiment is consist of two conditions by using the air and condensed water to heart reduction. But in case of condensed water the pressure operation is controlled at 280 and 260 Psig respectively. The results of experiment shown the refrigeration effect coefficient of performance (C.O.P) and energy efficiency ratio (EER) is 39675 Btu/hr 3.01 and 10.3 Btu/hr.Watt respectively with the air is used. At the pressure operation 280 Psig refrigeration effect (C.O.P) and (EER) is 44212 Btu/hr 3.38 and 11.5 Btu/hr.Watt respectively and 49856 Btu/hr 3.99 and 13.6 Btu/hr.Watt at pressure operation 260 Psig. Furthermore the capacity of condenser is increases to 11.43% and 25.6% and also the refrigerant efficient is increases to 12.43% and 32.43% at the pressure operation 280 and 260 Psig. Thus the parameter of the energy efficiency ratio depends on the capacity of condenser working substance temperature (pressure operation) and air surrounding temperature.

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