This research aim to improve a combustion system of boiler within increase combustion efficiency and use all out of the energy. The large boilers were used in the industrial factories which consume a lot of energy for production. By oil and gas fuel will be increasing costs everyday cause many factories interested in energy saving with any method technical engineering specifically for production costs and environment effect decreasing. This researching was installed and program was invented in the industrial factory. This industry factory consumed cogeneration energy for fabric dying. The efficiency before installing the software is measured about 65.85 - 71.98% which heat in exhaust gas about 20% of overall energy is filled in the system. After installing heat loss in the system has been fallen until remain about 5 - 12% and efficiency of heat in system has been reached a peak of 80 - 85%.

This article presents The Analysis for high-Voltage Electric Stress in Lp and Ls coils of Tesla Transformer for studying the efficiency design. The tesla transformer is designed at 350kV rating Voltage and 120 kHz resonant frequency. The effect of high voltage when we designed the coil has impact to Electric Stress between primary and secondary coil because the tesla transformer uses air core. The insulator of coil also has problem on the reason as flashover on the 2 coils. The best dimension among coil has to present in this paper by using optimal mathematical solution. The simulation results show performance of the solution and ensure the methodology with positive way.

This paper presents a testing of three insulators namely solid fluid and gas for choosing the best electric insulators. In order to generate the ozone gas the insulator must be selected in electrode set. Nowadays the insulators do not have the optimal test procedure for getting total efficiency. Therefore in this paper a design of ozone generator is proposed by using the fundamental of electric field stress. The ozone generator is a coaxial cylindrical electric type that has solid insulator in center of glass tube. This solid insulator will be dielectric among the high voltage electrodes. Ozone gas will generate in this air gap. This paper also focuses on the insulator testing of three insulators. It will find the efficiency of 3 insulators and compares them with the density and stress of ozone gas. The experimental results show the performance and ensure the optimal ozone generator design.

The purposes of the research were to create and evaluate the efficiency of Computerassisted Instruction Program for courses of Physical Fitness based on criteria 90/90 and to analyze the learning achievement of the student after using computer - assisted instruction. The samples were 20 first-year diploma students at Rajamangala University of Technology Phra Nakhon North Bangkok Campus. The researcher did the experiment by using pretest and then implementing the computer assisted instruction program for courses of Physical Fitness. After that the students did the posttest then the researcher calculated the efficiency of the computer - assisted instruction and analyzed the learning achievement of students after studying.The result revealed that the efficiency of the computer - assisted Instruction was efficient in criteria 90/90 and learning achievement increased significantly at 0.05.

This research aimed to improve combustion burning system of boiler and to increase burning efficiency and use all out of the energy. The large boilers were used in the industrial factories which consume a lot of energy for production. The Increasing oil and gas fuel costs everyday cause many factories interested in energy saving with any technical engineering methods specifically for production costs and environment effect decreasing. This research program software was installed and invented for the industrial factory. This industry factory consumed cogeneration energy for fabric dying. The efficiency before installing the software is measured about 65.85-71.98% and heat loss by 50% of overall energy in the system. After installing heat loss in the system has been fallen to 5-12% and efficiency of heat in system has been reached a peak of 80-85%.