Journal of Energy and Environment Technology of Graduate School Siam Technology College

ANALYTICAL STUDY FOR REDUCE ENERGY LOSS IN COMPRESSED AIR SYSTEMS

soonthorn saengpetch — 2024-06-28

This research is to improve the efficiency of the air system and the loss of air pressure in the distribution system because the compressed air system is the tool and source in the air pressure production process. To pass on to other power-saving machinery and equipment in the pneumatic system and measuring instrument control system. Pneumatic conveyor systems are used to reduce human effort in many production processes. Compressed air is required for various pneumatic equipment such as air cylinders, air guns, polishing machines, drilling machines, spraying machines and conveying machines, as well as being a component in the use of various automatic machines. Reciprocating air compressors have sizes ranging from ¼ horsepower and up, but those commonly used in industrial plants have sizes ranging from 5–15 horsepower (3.7–11.0 kW). This research was conducted specifically. Piston air compressor that has been used for 9 years. Belt-type air pump, PP310A 10HP 3 cylinders 260 liters, 380V. The research results found that electrical energy used before the renovation was 21,060 kWh/year, and electrical energy used after the renovation was 19,699 kWh/year. Electrical energy can be reduced to 1,361 kWh/year, accounting for 6.46%.

ENHANCING COCONUT WATER PRODUCTION PROCESS ACCORDING TO GMP GUIDELINES AND EVALUATING IMPACT BY SIMULATION MODELING OF BAN KLANG KHLONG TAPLANG COMMUNITY ENTERPRISE, SAMUT SAKHON PROVINCE

Naphob Saisuwan — 2024-06-28

In recent years, the food and beverage industry has seen the importance of improving production processes to comply with Good Manufacturing Practices (GMP) guidelines, a modifying the process layout flow had been to play an important role in increasing product quality and production system efficiency. The objective of this research is to assess the effect of improving the coconut water production process flow chart in accordance with GMP guidelines in terms of productivity and work in process (WIP). The ways of the implementation method would be to use a relationship chart to analyze the interdependence between 8 main activities according to GMP guidelines, and then using the simulation techniques to compare the workflow before and after the renovation. The results showed that productivity increased in all activities by an average of 889.25 units or 31.32 percent. This improvement was the resulted of a more continuous flow of raw materials after improvements to the original production layout and resulting in a decrease in the amount of work during the production process, which it shows that the efficiency of the production process has improved.

This research also contributes to empirical evidence for quantitative process improvements showing the effectiveness of GMP principles to use for coconut water production. The results underscore the significance of aligning production processes with regulatory standards and leveraging simulation tools for optimizing efficiency and competitiveness. This study not only improves our understanding of the dynamics of process improvement, but also provides actionable insights for practitioners seeking to enhance productivity and streamline operations in the beverage manufacturing sector.

APPLICATION OF QUALITY FUNCTION DEPLOYMENT IN THE SAFETY WOODEN PUZZLE DESIGN FOR KIDS

kritsada phengarree — 2024-06-28

The purpose of this research is to (1) study customer preferences for wooden jigsaw puzzless using house of quality and (2) propose safety guidelines for designing wooden jigsaw puzzless using quality transformation techniques. The study involved 30 parents of children aged 3 months to 12 years. Data was collected through a 5-part questionnaire covering material, design, usefulness, maintenance, and other aspects. Quality Function Deployment (QFD) and House of Quality (HOQ) techniques were used to plan the design and development of wooden jigsaw puzzless. The research revealed six safety aspects ranked by technical importance, including appropriate size (14.54%), durability and lightweight (12.39%), cleanliness and absence of foreign substances (12.22%), sturdy packaging (12.17%), standard paint color (7.79%), and smooth surface (6.52%). The design guidelines summarized that wooden jigsaw puzzless should be larger than 3.2 cm and longer than 6 cm for children over 3 years old, made of strong and lightweight wood, and packaged in sturdy boxes. The paint should be durable, free from toxic substances, and the surface should be smooth.

PREDICTING THE ENERGY CONSUMPTION OF THE SOLAR-POWERED ELECTRIC VEHICLE STC-4 FOR THE ROUTE OF THE BRIDGESTONE WORLD SOLAR CHALLENGE

Jirawat Garluna — 2024-06-28

The objective of this research is to predict the energy consumption of the STC-4 solar-powered electric vehicle for the Bridgestone World Solar Challenge race route. The route starts from Darwin, located in the northern region of Australia, and ends in Adelaide, situated in the southern region of Australia, covering a total distance of 3,039.42 kilometers and taking 6 days to complete. The analysis of the energy consumption of the STC-4 solar-powered electric vehicle revealed the following results: On Day 1, starting from Merrill Corporation Australia to Larrimah Hotel and Caravan Park, covering a total distance of 497.66 kilometers, the energy consumption was 28,449.47 watt-hour. On Day 2, starting from Larrimah Hotel and Caravan Park to Tennant Creek – Outback Caravan Park, covering a total distance of 492.21 kilometers, the energy consumption was 28,543.50 watt-hour. On Day 3, starting from Tennant Creek – Outback Caravan Park to Alice Springs Heritage Caravan Park, covering a total distance of 514.34 kilometers, the energy consumption was 30,447.40 watt-hour. On Day 4, starting from Alice Springs Heritage Caravan Park to Oasis Tourist Park, covering a total distance of 683.7 kilometers, the energy consumption was 39,034.06 watt-hour. On Day 5, starting from Oasis Tourist Park to Augusta Caravan Park, covering a total distance of 548.11 kilometers, the energy consumption was 31,980.70 watt-hour. On Day 6, starting from Augusta Caravan Park to Adelaide Victoria Square, covering a total distance of 303.4 kilometers, the energy consumption was 17,984.24 watt-hour.

EFFICIENCY ANALYSIS OF ELECTRICAL POWER GENERATION SYSTEM ON THE ROOF OF A SOLAR-POWERED ELECTRIC CARS FOR THE BWSC-2023 CRUISER CLASS COMPETITION

Kumjat Jaitrong — 2024-06-28

The objective of this research is to analyze the efficiency of the STC-4 solar electric vehicle rooftop electric power generation system for the Bridgestone World Solar Challenge 2023 Cruiser Class competition by measuring four parameters: light intensity, temperature, voltage, and current. These measurements are taken to determine the electrical power and energy produced. The installation of solar panels on the roof of a car utilizes monocrystalline solar panels, which are flexible and lightweight. These panels cover an area of 3.3 square meters and have a power output 650 watts at an electrical voltage of 79.8 volts. The results of the test of electrical energy production of solar panels while participating in the Bridgestone World Solar Challenge 2023 from the starting point in Darwin to Mataranka, a distance of 422 kilometers, were able to produce 3.92807 kWh of electrical energy with a capacity of Produces maximum electricity of 558 W at approximately 1:30 p.m. and a light intensity value of 1,430 W/m², equivalent to a solar panel efficiency of 12.46 %

ENHANCING LOGISTICS EFFICIENCY FOR THE COMPETITIVENESS M.W.A WELDING (THAILAND) CO., LTD

Kawinwet Pipitthanathunyathorn — 2024-06-28

The administration of operations that generate the flow of products and services in order to effectively and economically meet customer needs is known as logistics management. The objective of this research study is to lower the operational costs of logistics and provide methods for increasing M.W. Evelding (Thailand) Co., Ltd.'s efficiency in logistics management. Through interviews with 12 executives, managers, supervisors, and employees, this action research gathered data from the departments of purchasing, warehousing, inventory, and transportation. In order to lower operating costs, problems were further examined utilizing cause and effect diagrams and product grouping using ABC analysis.

According to the study, categorizing products based on their use value could be more effective in lowering inventory management expenses by utilizing ABC analysis to identify products that had a high use value and needed tighter supervision. Additionally, resources could be distributed effectively, leading to more economical orders. The findings also demonstrated that the cost of each order fluctuated depending on the quantity of inventory ordered each time but stayed constant regardless of the number of orders. Ordering using the economical approach was less expensive than ordering using the existing ordering model, according to the comparison of the annual value. Based on the comparison, it was discovered that the economy ordering model, which could save up to 69.35 percent, had a value of 461,761.33 baht, but the present ordering model of Group A warehouse products had a value of 1,506,511.30 baht. Additionally, it was discovered that budget-conscious route planning could save costs in ten days by as much as 30,845.00 baht, or 39.87 percent. This is due to the fact that full truckload management shortens delivery cycles and makes deliveries on time by combining delivery sites on the same route. Therefore, automation technology, warehouse management software, and transportation management systems to minimize operating expenses must be imported to eliminate running around empty in order to operate efficiently in line with the current context of competition and rapid change. Additionally, staff members need to be trained to comprehend their responsibilities and functions as well as the logistics management context.

THE MEASUREMENT AND ANALYSIS OF WORKING CONDITIONS REGARDING NOISE AND PREPARATION OF NOISE CONTOUR MAP IN A TAG AND TRANSPONDER PRODUCTION FACTORY IN LAMPHUN PROVINCE

Nutthaphong Mated — 2024-06-28

This study aims to assess the noise level in the working environment to create a noise contour map and designate areas for personal protective equipment in a tags and transponder manufacturing factory. The research involves measuring and analyzing the work environment is noise conditions in three areas using a sound level meter standardized by IEC PUB 651 TYPE 2. The results were used to create a noise contour map and designate areas for personal protective equipment. The study found that in area 1 (EMB department), the average noise level was 78.03 dBA, in area 2 (Injection molding department), it was 75.45 dBA, and in area 3 (RF machine department), it was 70.99 dBA. Overall, the majority of measured noise levels complied with standards, but area 2 had one point with noise exceeding standards, at 85.1 dBA, representing 0.52% from a total of 191 measuring points in the said area it has a maximum sound level of 85.1 dBA. Therefore, area 2 should be designated for protective equipment, along with monitoring and assessing noise exposure and measuring additional accumulated noise level, together with control planning at the source of the sound or transmission paths should be implemented to reduce potential health impacts on employees. This includes establishing safety regulations, providing training about the dangers of loud noises and creating noise contour maps to raise awareness and foster a healthy working safty environment for employees.

PERFORMANCE ANALYSIS OF AIR CONDITIONING COMPRESSOR USING THERMAL IMAGING WHEN CAPACITOR DEGRADES

Songkran Parakul — 2024-06-28

The compressor plays a crucial role in air conditioning systems. Its primary function is to compress the refrigerant, increasing its pressure and temperature, which directly affects the electricity consumption of the air conditioner. Typically, split-type air conditioners with constant speed use capacitor-run motors. If the capacitor’s value degrades from its original state, the compressor in the air conditioner will not operate efficiently, leading to energy wastage. This research aims to analyze the performance of the compressor using thermal imaging. In the final stage, the compressor efficiency of the air conditioning system is evaluated. The experimental results indicate that the acceptable efficiency of the compressor requires the capacitor value to decrease by no more than 30 microfarads from the default value. Analyzing compressor efficiency using thermal imaging can be applied for air conditioner maintenance, ensuring optimal performance and preventing equipment deterioration.

DEVELOPMENT MOBILE APPLICATION TO PROMOTE WEIGHT CONTROL

Suttilug Choonprawat — 2024-06-28

This research aims to 1) develop a mobile application to promote weight control, 2) determine the effectiveness of the mobile application for weight control promotion, and 3) assess user satisfaction with the mobile application for weight control promotion. The sample for this research was 28 employees from a private company who are interested in dietary control, selected through purposive sampling. The research tools included the mobile application for weight control promotion, an effectiveness evaluation form for the mobile application, and a user satisfaction evaluation form for the mobile application. The statistical methods used for data analysis included mean and standard deviation.
The research findings indicated that the developed mobile application for weight control promotion comprised six functions: 1) personal data recording, 2) daily calorie requirement calculation, 3) daily food intake recording, 4) food items and calorie content, 5) weekly and monthly calorie intake reports, and 6) nutritional knowledge. The evaluation of the mobile application's effectiveness in terms of content showed a high level of suitability (Mean=4.36, S.D.=0.52). The evaluation of the mobile application's performance indicated a high level of suitability (Mean=3.91, S.D. = 0.78). Overall user satisfaction with the mobile application was moderate (Mean=3.20, S.D.= 0.48).

EVALUATING THE CARBON FOOTPRINT OF ENERGY USE IN ROAD FREIGHT TRUCKING SYSTEMS: A CASE STUDY OF M.E. TRANS COMPANY LIMITED

Chalida Pohma — 2024-06-28

Climate change is a significant factor impacting the environment and the sustainability of countries worldwide. Climate change is one of the most crucial issues of our time, and the transportation industry plays a vital role in generating carbon dioxide (CO₂), which is a part of greenhouse gases (GHGs) that directly affect climate change. There is an awareness of the need to assess the carbon footprint of energy use in land freight transportation using trucks. Therefore, this research focuses on calculating GHG emissions using the greenhouse gas emission coefficient in units of carbon dioxide equivalent (CO₂eq), following the guidelines of the Greenhouse Gas Management Organization (TGO). The objective is to study the energy data of land freight transportation activities by land freight operators using trucks and to evaluate the carbon footprint of energy use in the freight transportation system. Annual data collection from freight operators transporting goods to the southern provinces of Thailand was conducted. The research studied energy data from land freight operators' land freight transportation activities, including the quantity and destination provinces of the transportation routes per year. The transportation of goods originates from Samut Prakan province has transported to Songkhla province, with an average distance of 991.9 kilometers by large six-wheel trucks with a maximum load of 11 tons. The vehicles have consumed some diesel fuel, From the data recorded on the full truckload and empty running This makes the annual carbon dioxide emissions equal to 3,255.42 kgCO₂eq/year and in the case of using large 10-wheel trucks the average maximum load weight is 16 tons. Using diesel as fuel emits carbon dioxide. It was found that when loading goods on the return trip, it was a 100% empty trip. There would be an amount of carbon dioxide released from the transportation of goods, with the use of vehicle fuel for transport by the operator equal to 7,275.59 kgCO₂eq / year. For these reasons, in order to reduce greenhouse gas emissions, truck management methods using alternative fuels, biodiesel or other clean energy sources have lower emissions compared with diesel or gasoline, improving engine technology of renewable energy sources can significantly reduce the carbon footprint of cargo transportation, and adopting electric vehicles (EV) to provide services.

STRUCTURAL ANALYSIS OF THE STC-4 SOLAR ELECTRIC VEHICLE ENERGY STORAGE UNIT ACCORDING TO THE BRIDGESTONE WORLD SOLAR CHALLENGE 2023 COMPETITION REQUIREMENTS USING FINITE ELEMENT METHOD

Rattapon Phosri — 2024-06-28

This research aims to analyze the structural strength of the STC-4 solar electric vehicle's energy storage unit built in compliance with the Bridgestone World Solar Challenge 2023 requirements. According to the competition's regulations, participating teams must equip their solar-powered vehicles with an energy storage unit capable of withstanding an acceleration of 20 G in all directions. The specified dimensions for the energy storage unit's structure are 600 millimeters in width and 1,600 millimeters in length. The structural strength of the STC-4 solar electric vehicle's energy storage unit was analyzed using the finite element method (FEM). It was found that the front energy storage structure has horizontal expansion due to acceleration along the Y axis equal to 4.16 mm, respectively. Horizontal expansion due to acceleration along the X axis is equal to 1.31 mm, respectively, and horizontal expansion occurs due to acceleration along the Z axis is equal to 1.52 millimeters. The expansion along the XYZ axis meets Bridgestone World Solar Challenge requirements, ensuring safety for drivers and passengers.