Chaishome, Jedsada
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Preferred name
Chaishome, Jedsada
Alternative Name
Chaishome, J.
Main Affiliation
Email
jedsada.ch@kmitl.ac.th
14 results
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Item type:Publication, Optimal Design and Installation of Solar Rooftop for Thai government building(2025-01-01); ; This research presents an approach for installing grid-connected solar cells on the rooftops of a prototype building in Thailand to offset electricity consumption, aligning with TOU electricity pricing. It includes design methods, energy-saving calculations, and illustrates the savings from solar cell installation over a one-year period, without accounting for solar cell deterioration or system loss charges. The study compares the concept of installing solar cells on the rooftop based on the building's electricity usage characteristics, distinguishing between installing solar cells across the entire rooftop area and according to the building's electricity usage behavior during daytime and working days, ensuring minimal electricity remains while still being sufficient for use. Furthermore, it calculates the comparison before and after installation to provide information for rooftop installation on the prototype building. The research results indicate that installing solar cells across the entire rooftop area can save electricity costs up to 550,000 THB per year. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Thermal degradation of flax fibres as potential reinforcement in thermoplastic composites(2014-03-19); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Estimating the Power Losses in Induction Motor using Temperature Monitoring(2025-01-01); ; The paper proposes the estimation of power losses in electrical machines using a measurement technique based on the temperature of the electrical machine and the heat transfer equation. To demonstrate this concept, the heat diffusivity of the induction motor can be illustrated through thermal images. This research addresses the impact of supply voltage unbalance on power loss in induction motors. The system comprises A contact temperature measuring circuit utilizing the IC LM 35DZ as a temperature sensor and signal converter, paired with a computer equipped with a National Instruments PCI 6014 data acquisition card. The experiment was conducted by adjusting the phase unbalance to 10%, 20%, and 50% to observe temperature changes. This allows for a direct temperature in the induction motor. The primary advantage of this method is that the machines do not need to stop or be removed from their operational process to measure their losses during preliminary maintenance. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, An investigation of oil residue on surface by infrared thermography(2020-01-01); ; This work aims to propose a visual inspection, infrared thermography technique, of oil residual mass on stainless steel surface (SS) (hydrophilic surface representative) and polytetrafluoroethylene (PTFE) surface (hydrophobic surface representative). An improved understanding of the oil fouling characteristic is a key point to develop this technique. The effect of surface roughness on the oil contact angle, oil residual mass, and the resulting average temperature of the residues on SS and PTFE surface was studied. For the infrared thermography technique, the mass of oil adhered to each interface using heating at a temperature of 80<sup>0</sup>C for 10 minutes. SS AISI 304 plaques with the average surface roughness of 0.4, 0.8, and 3.2 µm and PTFE with that of 0.4 and 0.8 µm were examined. All samples were snapped top view using a thermal image camera. The average temperatures were obtained from the color spectrum of the thermal images. It could be summarized that the proposed measurement is possible to detect the accumulation of oil on the SS whereas it was not clearly different that on the PTFE surface. A greater oil residual mass on both hydrophilic and hydrophobic surfaces is a result of an increase in surface roughness and sequential wettability from the contact angle as expected. Moreover, each liquid-solid interfacial material has its specific surface characteristic. Finally, each liquid-solid interfacial material has its specific surface characteristic and the new and used oil-SS interface could be detected by infrared thermography technique. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, The influence of alkaline treatment of plant fibres on tensile properties of single fibres and composites(2017-01-01); Rattanapaskorn, S.The hypothesis pursued in this work is that by removing hemicellulose and pectin from plant fibres by alkaline treatment, the fibre tensile performance could be improved. Flax fibres were examined as reinforcement. The highest ultimate tensile strength (UTS) resulted for fibre treated with 3% by weight of NaOH solution (up to 12% increase in UTS and 18% increase in Young’s modulus, compared to untreated fibres). A 15% reduction in cross-sectional area of the fibres was observed. Tensile performance of treated (a percentage of fibre volume fraction (V<inf>f</inf> %) of 30%) and untreated (V<inf>f</inf> % of 34%) fibre reinforced polypropylene composites manufactured by the vacuum forming process, were compared. A decrease of UTS and Young’s modulus of the treated material was observed with an increase in consolidation time. The UTS of the treated material was 3.82% lower than that of the untreated material. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Ripening control of nam dok mai mango (Mangifera indica Linn.) with titanium dioxide(2019-01-01); - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Polylactic acid (PLA) based green composites reinforced pineapple leaf fibres: Evaluation of processing and tensile performance(2018-08-14); This paper reports on a study of the compression moulding and the vacuum forming of unidirectional pineapple leaf fibres/polylactic acid composites and the influence of process variables on the tensile properties of the material. The characterisation of the micro and meso structures of the pineapple leaf fibres is reported. The effect of consolidation temperature on the fibre thermal stability and the tensile properties of the composites is investigated. The results show that vacuum forming was found to be preferable process with high stiffness modulus and UTS of the composites, compared to compression moulding. The insignificant detrimental effect of 165°C high consolidation temperature was observed. Finally, the fibre thermal degradation seems to dominate the composite tensile performance over its interfacial quality between the fibre and the matrix. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Inspection of Heat Seal Packing Bag Integrity Using Thermal Images With YOLO Algorithm(2025-01-01); ; This paper presents an inspection of heat seal packing bag integrity using thermal imaging with a deep learning technique. The performance was evaluated by comparing the object detection rates obtained from the YOLOv4-Tiny Algorithm and the Convolutional Neural Network (CNN) technique. Two sets of completely sealed and failure-sealed packaging bags were prepared for the training (100 bags) and testing (100 bags) of the models. Some sample bags containing tomato sauce inserted between the seals represent a failure-sealed condition. The integrity of the heat seal packaging bag was analyzed by examining the differences in color shade patterns of the thermal images. As a result, the YOLOv4-Tiny model achieved a detection accuracy of 98.80%, significantly outperforming the CNN technique, which detected only 78.40%, while using the same dataset; additionally, the time required for detection and training was faster. - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Effects of heat transfer surface temperature on liquid egg yolk fouling(2024-01-01); ; - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Tensile properties of PLA/PBAT blends and PLA fibre-reinforced PBAT composite(2018-08-14);