This research aimed to study powe generation from heat loss strove by thermoelectric generator unit. As cooking with a gas stove can cause heat loss between the stove and the cookware this heat loss from gas stove can be converted into the electricity. For the experiment the researcher used a gas stove model KB5 installed with thermoelectric plate model TEG1-241-1.4-1.2 connected in a series to the power of 4 modules. Then experimental conditions of the gas pressure in the gas strove were set at 0.1 0.2 0.3 0.4 0.5 and 0.6 kg/cm2 respectively while the amount of mixed air was constant during the experiment. The results showed that when the gas pressure was at 0.6 kg2 the temperatures of the hot side and cold side of the thermoelectric generator was equal 250.5oC and 65.5oC respectively. Lt also generated the highest electric power of 53.3 watts. The power conversion efficiency was 5.3% at 38.1 Volts with 1.4 Amperes. In addition when electric was connected to a thermoelectric generator unit with 12 VDC 7-watt LED bulb the gas pressure in the gas stove were set at 0.3 0.4 0.5 and 0.6 kg/cm2 respectively was affected by the difference between the heating temperature and the cold temperature in the range of 185o C that could lighten up LED bulb.

A case study was conducted to design construct and test a thermosiphon economizer for increasing the temperature of feed water by using waste hot water. The simulation of the thermosiphon economizer (heat exchanger) for the establishment of the optimum size was performed using the thermos-economical method. The thermosyphon was made of a total of 80 copper tubes (outside diam.19.05 mm) with evaporative adiabatic and condensation lengths of 300 10 and 300 mm respectively. The working fluid was R-134a filling ratio was 50% by evaporative volume and the thermosiphon was arranged in a staggered form. In testing performance flow rate of the inlet hot water was set at 10 L/min and the controlled inlet temperature of cold water at 25oC. The average flow rate of the cold water was set at 5 7 and 10 L/min respectively. Results showed that the maximum of rate of heat transfer from the condenser section occurred at the flow rate of the cold water of 10 L/min. When test the inlet temperature of hot water of 4555 and 65 o C were used at the inlet volume flow rate of cold water of 10 L/min maximum heat transfer rates from the condenser 4626 8260 and 8790 W were achieved. Moreover the outlet temperature of the cold water which was initially 25o C changed to 311 34 and 37o C respectively. Therefore increasing the outlet feed water temperature reduced energy consumption. The effectiveness of the thermosiphon economizer with the inlet temperatures of hot water of 45 55 and 65o C was 0.47 0.48 and 0.49 respectively.

Due to the systems of mechanical vapor compression have a high energy consumption for air-conditioned space. Therefore the system of evaporative cooling presents as a promising alternative option for the air-conditioning system. Moreover the pre-cooling system is normally used to reduce an intake ambient air temperature before the air-conditioning system. As mentioned above this research aims to investigate the effectiveness of evaporative cooling system by using a car radiator for air per-cooling. In this research the commercial car radiator was used for cooling inlet ambient air by cooling water. The evaporative cooling system consisted of evaporative cooling panel with a maximum water rate of 40 lite/minute and a maximum air rate of 5100 m3/hr. The results show that most suitable water flow rate of radiator is 10 lite/minute and this radiator can make the differences of air temperature of about 8.9oC. Moreover the results also show that the effectiveness of evaporative cooling system could reach about 73.31% with a maximum sensible heat of 8.43 kW.

The purposes of this research were to study and survey the relationship between personal factor and supportive factor and the demand of entrepreneurs in home economics students from the Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakorn. By giving questionnaires and quizzes to 180 of Home Economics students from the Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakorn. The result were found that the demand for entrepreneur in home economics students is at a high level The personal factor consisted of gender major of study and work experiences during the study period was not significantly related to the demand of entrepreneurs in home economics students. The supportive factor consisted of attitudes towards entrepreneurs and the management of teaching and learning the correlation with the demand for entrepreneurs in home economics students at the 0.05 level. The knowledge about entrepreneurs was not significantly related to the demand of entrepreneurs in home economics students.

This research aims to study and compare Knowledge Attitudes and Practices of Electronic Documentation Systems. Of the Faculty of Home Economics Technology 117 Students in Rajamangala University of Technology Phra Nakhon classified by personal Factors.The research instrument was a questionnaire with the characteristics of tools and tools forresearch. The questionnaire was designed on the research concept. The characteristics of the questionnaire was closed- end question and open- end question. Descriptive analysis: frequency percentage mean and standard deviation t-test and F-test The study indicated that Knowledge attitude and performance. An electronic record system that affects the effectiveness of Faculty of Technology Home Economics Rajamangala University of Technology Phra Nakhon Personal factors Mostly sexual Female between 25 and 35 years old. Average monthly income 15000 – 25000 Type of Academic Teaching Experienced in work 5- 10 years and most have access. Trained How to use the system of electronic documents. Knowledge Understand about the electronic document system found that the staff of the Faculty of Home Economics. Knowledge in the high level. I know that the electronic system. Useful in the field. Space saving for document storage. The attitude of personnel to the information system. Electronics They found that they had a high level of feedback and a good working relationship with journalists.Electronics can be operated with a medium electronic system. The analysis compares data wirefree personal factor affect performance in different applications. The system is classified according to the individual factors and test the hypothesis using. The t- test and F- test were statistically significant at the 0. 05 level. Knowledge Understanding personal factors in terms of gender has no effect on the effectiveness of the journal. Electronics Level Comments Attitude In addition Overview does not affect the performance of electronic records. Level of feedback Job performance was classified according to personal factors in terms of gender. The electronic registries were significantly Different at the 0.05 level.