The purposes of this research are to study water and electricity consumption behavior of the students to study understanding of water and electricity saving and to compare the difference of water and electricity consumption behavior classified as personal characteristic of the students Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon. This research was descriptive research. The sample group used in the research was the students Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon. Size of the sample group was specified to be 325 people by stratified sampling. The tool used in data analysis was questionnaire divided into 3 parts including part 1: questions regarding general details of a respondent part 2: questions regarding knowledge of water and electricity saving consumption the students of Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon and part 3: questions regarding water and electricity consumption behavior of the students Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon. The statistics used in data analysis consisted of frequency percentage mean standard deviation and hypothesis testing using t-test and ANOVA (Analysis of Variance) for testing parallel difference by LSD method. The research result found that: 1. The level of water and electricity consumption behavior of the students Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon was overall in the moderate level. 2. The level of understanding and knowledge regarding water and electricity saving of the students Faculty of Home Economics Technology Rajamangala University of Technology Phra Nakhon was overall in the moderate level. 3. The comparison of different behavior of water and electricity consumption specified according to personal characteristics could be summarized that the students having different gender class and major had identical water consumption behavior and the students having different gender class and major had identical electricity consumption behavior. On the other hand the students having different major had statistical significance in electricity consumption behavior at 0.05

To store electrical power from solar cells are generally used battery as storage. Recent development in capacitor technology achieves with higher capacitancc smaller and low cost especially dcvelopment of a supcr capacitor (doublc laycrs). This research study used a super capacitor to store electrical power from solar cells. The results show that super and electrolyte capacitor can be used without battery with more power density and fast charge. But capacitor discharging must be controlled. The important disadvantage is super capacitor is used with low voltage and high rate of charge leakage. In case of electrolytic capacitor can use with higher voltage low rate of charge leakage but lower capacitance.

Today Thailand has been facing the energy problems due to the limited sources of natural energy. Meanwhile the power consumption has been growing constantly and the tendency of consumption increases each year. Therefore to solve these energy problems especially in electricity-generating power which have been demanded throughout the country the National Economic and Social Advisory Council had a resolution to submit the Cabinet the comments on nuclear-electricity generation and proposed the government for approval on August 24 2003. The government assigned the National Energy Commission’s policy to set out the electricity production plan by nuclear power plant requiring that the power house during 2020-2021 will be established. The Electricity Generation Authority of Thailand (EGAT) has executed “the Power Development Plan 2007” established the many sets of committees to accommodate the plan and carried out surveying for dominant information for examples parameters and variables issues of resulting effect and economic expansion so that these would be summarized and submitted to the government under the production plan procedure set out by EGAT. According to the production plan for future energy reserves the new power houses have been established. To accommodate the economic expansion some potential factors needed to be taken into consideration included fuel supplied and low cost. Previous researches demonstrated that nuclear power plant was lowest on cost. In present study the appropriate model of unit cost for electricity generation in Thailand was examined. The equation was described below;....

HV power distribution system circuit breaker are important devices in substations. Such as Malfunction or deterioration of equipment with in the substation will directing impact on the stability of the power distribution system and affect the reliability of the system. In addition this means that it is necessary to assess the actual condition of the proper condition-based operation and maintenance. Thus this thesis presents condition assessment procedure for equipment by using technical information visual inspection by Weighted Scoring Method. Weighting technique is used to determine important weight testing methods of devices by using Analytic Hierarchy Process (AHP). Testing methods for circuit breaker are such as visual inspection contact timing test. Scoring technique is divided into 1-3 levels by classifying on actual evaluate equipment consisting of consisting of good moderate bad. This thesis proposes a software development in order to organize the database and calculate the analysis of the condition of equipment in 5 HV substations. The evaluation results will be divided into 3 levels good medium and bad condition. According to the evaluation level the maintenance types are separated into 1) regular maintenance 2) increase the frequency of maintenance and monitoring of the test 3) equipment must be improved urgently. Finally abnormal incidents of equipment and cost of HV equipment maintenance can be reduced in effective way.

In this study we investigated the effects of Sm2O3 addition in ceramics 0.93(Bi0.5- x/0 . 9 3Smx/0 . 9 3Na0 . 5 ) TiO3 - 0 . 0 7 BaTiO3 by mixing solid oxide solutions. The crystalline properties of the X-ray diffraction and ferroelectric properties were studied from the P - E loop. The physical properties showed that BSNT-BT ceramic density increased and the percentage of shrinkage decreased due to the increase of the amount of Sm2O3. Moreover it was found that the results were consistent with the structural study for sintered samples at a temperature of 950 °C for 7 hours. It can be determined that the BSNT-BT ceramics have a perovskite structure which is like the main structure of ceramic type BNT. Dielectric properties and dielectric losses at room temperature showed that when increasing the amount of Sm2O3 in BSNT-BT ceramics the dielectric and low dielectric loss were consistent with reduced material resistance. Further the ferroelectric test found that BSNT-BT ceramics improved the ferroelectric properties when increasing the amount of Sm2O3 in the BSNT-BT ceramics.