This paper presents a study of heat exchanger design for improving the performance of ice maker by using waste water from ice factory. The heat exchanger was made of stainless steel and had 4.023 m2 of heating surface. After using the heat exchange in the waste water pond which the temperature was 0 C the temperature of feed water was decreased from 28 C to 22 C. The COP of the ice maker was increased and the factory can save energy consumption 52034 kWh/year or 61993 baht/year. The payback period was 0.5 year

This research aims to evaluate the effectiveness and limitations of the Road Safety Audit in Thailand. The evaluations would be used as a guideline to set Road Safety Audit policy for transport authorities in order to enhance the traffic safety in the construction area. In the study the construction project route 318 Trat-Had Lek part2 (Section1) Sta.1+900.00 to 20+000.00 (total distance of 18.100 kilometer) was selected as a case study. The accident statistics occurred before the construction and during the construction were compared to analyze the effectiveness of the Road Safety Audit used in the project. The result of the study shows that the main cause of the accident are traffic management traffic sign and marking as well as pavement surface. Therefore the researchers have provided some recommendations against the accident causes. Finally the operations of the contractors according to the recommendations were monthly summarized to measure the effectiveness of the recommendations.

This research aims to establish and measure the quality of students language proficiency Thailand for foreigners. Practical application Thailand Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon The sample of Chinese students High levels of Nanning 3rd year of study in Thailand. Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon No. 13 Semester 1 Academic year 2557 results were found. Measurement of Proficiency in Thailand. For Chinese Students The 3rd year of study in Thailand. Faculty of Liberal Arts The researchers created a multiple choice answer four options with 50 items measuring five aspects: the opposite of 10 questions the meaning close to 10 on the wrong side of 10 the right to have 10 problems and aspects. Selection of 10 items is measured with a content validity index based on the consistency of 1.00 with the difficulty (p) from 0.43 to 0.89 with discrimination (r) from 0.13 to 0.60 validity. Correlation coefficients ranging from 0.11 to 0.55 and the reliability coefficient for Bucks alpha ranging from 0.80 – 0.82 split half reliability ranged in value was 0.88 The results of the research can be a tool to measure language proficiency level of Thailand. Thailand is the language of international students at a certain level.

The implementation process and the supply chain transporting products used in construction. This is the process involves moving and storage distribution production planning and delivery. It is activities related to the management of the interaction processes and strategies for working effectively together to deliver the product as possible. The survey questionnaire to a sample of 100 projects and the 100 series for study sample. This is assumption that the information is credible information that has been 95 %. The results showed that the current project and the construction of a transport and supply chain principles attributed to the operation of many businesses but some of the data slightly different. Because of the way the business has different stages of implementation. Conclusions the study are to measure the reliability of the data using the program (SPSS) analysis showed that the reliability of the project is 98.7% and small and medium-sized enterprises was 98.9 %.information must be confidence according to hypothesis.

The purpose of this research was to construct the Computer Assisted Instruction Package for Computer Instructional Package for Drawing 2 dimension Subject using subject by evaluating the efficiency of the Computer Assisted Instruction Package Tools used for this research were Computer Assisted Instruction Package for Drawing 2 dimension Subject using multimedia quality test and questionnaire for learner’s satisfaction. The sample group was 30 students from Department of Machine Shop Pratumtani Technical College. The analysis between pretest and posttest was learning achievement higher scores This could be concluded that the computer self study package for Drawing 2 dimension Subject using can be used as a learning package.