Subjects -> ENGINEERING (Total: 2688 journals)
    - CHEMICAL ENGINEERING (229 journals)
    - CIVIL ENGINEERING (237 journals)
    - ELECTRICAL ENGINEERING (176 journals)
    - ENGINEERING (1325 journals)
    - ENGINEERING MECHANICS AND MATERIALS (452 journals)
    - HYDRAULIC ENGINEERING (56 journals)
    - INDUSTRIAL ENGINEERING (98 journals)
    - MECHANICAL ENGINEERING (115 journals)

ENGINEERING (1325 journals)            First | 1 2 3 4 5 6 7 | Last

Showing 201 - 400 of 1205 Journals sorted alphabetically
Concurrent Engineering     Hybrid Journal   (Followers: 3)
Continuum Mechanics and Thermodynamics     Hybrid Journal   (Followers: 8)
Control Engineering Practice     Hybrid Journal   (Followers: 46)
Control Theory and Informatics     Open Access   (Followers: 9)
Corrosion Science     Hybrid Journal   (Followers: 23)
CT&F - Ciencia, Tecnología y Futuro     Open Access  
CTheory     Open Access  
Current Applied Physics     Full-text available via subscription   (Followers: 4)
Current Applied Science and Technology     Open Access  
Current Journal of Applied Science and Technology     Open Access  
Current Research in Nanotechnology     Open Access   (Followers: 23)
Current Science     Open Access   (Followers: 115)
Dams and Reservoirs     Hybrid Journal   (Followers: 3)
Data-Centric Engineering     Open Access  
Decision Making : Applications in Management and Engineering     Open Access   (Followers: 1)
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 33)
Designed Monomers and Polymers     Open Access   (Followers: 1)
Designs     Open Access  
Designs, Codes and Cryptography     Hybrid Journal   (Followers: 7)
Development Engineering     Open Access   (Followers: 3)
Diálogos Interdisciplinares     Open Access  
Diffusion Foundations     Full-text available via subscription   (Followers: 4)
Digital Signal Processing     Hybrid Journal   (Followers: 34)
Dinamisia : Jurnal Pengabdian Kepada Masyarakat     Open Access  
Discrete Optimization     Full-text available via subscription   (Followers: 7)
Dokuz Eylül Üniversitesi Denizcilik Fakültesi Dergisi     Open Access  
Düzce Üniversitesi Bilim ve Teknoloji Dergisi / Duzce University Journal of Science & Technology     Open Access  
Dyes and Pigments     Hybrid Journal   (Followers: 1)
Dynamical Systems : An International Journal     Hybrid Journal  
E&S Engineering and Science     Open Access  
e-Phaïstos : Revue d’histoire des techniques / Journal of the history of technology     Open Access  
EAU Heritage Journal Science and Technology     Open Access   (Followers: 1)
El-Cezeri Fen ve Mühendislik Dergisi / El-Cezeri Journal of Science and Engineering     Open Access  
Electromagnetics     Hybrid Journal   (Followers: 13)
Electrophoresis     Hybrid Journal   (Followers: 18)
Elkawnie : Journal of Islamic Science and Technology     Open Access  
Emerging Science Journal     Open Access   (Followers: 1)
Emitter : International Journal of Engineering Technology     Open Access  
ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations     Open Access  
Energies     Open Access   (Followers: 4)
Energy and Power Engineering     Open Access   (Followers: 23)
Energy Conversion and Management     Hybrid Journal   (Followers: 15)
Energy Conversion and Management : X     Open Access   (Followers: 1)
Energy Engineering     Full-text available via subscription   (Followers: 8)
Energy for Sustainable Development     Hybrid Journal   (Followers: 13)
Energy Science & Engineering     Open Access   (Followers: 6)
Energy Science and Technology     Open Access   (Followers: 10)
Energy Sources, Part A: Recovery, Utilization, and Environmental Effects     Hybrid Journal   (Followers: 1)
Energy Sources, Part B: Economics, Planning, and Policy     Hybrid Journal   (Followers: 7)
Energy Systems     Hybrid Journal   (Followers: 11)
EnergyChem     Hybrid Journal   (Followers: 1)
Engenharia de Interesse Social     Open Access  
ENGEVISTA     Open Access  
Engineer : Journal of the Institution of Engineers, Sri Lanka     Open Access  
Engineering     Open Access   (Followers: 1)
Engineering & Technology     Hybrid Journal   (Followers: 22)
Engineering Analysis with Boundary Elements     Hybrid Journal   (Followers: 2)
Engineering Computations     Hybrid Journal   (Followers: 3)
Engineering Economics     Open Access   (Followers: 4)
Engineering Economist, The     Hybrid Journal   (Followers: 4)
Engineering Failure Analysis     Hybrid Journal   (Followers: 68)
Engineering Geology     Hybrid Journal   (Followers: 16)
Engineering Journal of Research and Development     Open Access  
Engineering Management in Production and Services     Open Access  
Engineering Management Research     Open Access   (Followers: 6)
Engineering Optimization     Hybrid Journal   (Followers: 19)
Engineering Reports     Open Access  
Engineering Science and Technology, an International Journal     Open Access   (Followers: 1)
Engineering Sciences     Open Access  
Engineering Studies     Hybrid Journal   (Followers: 1)
Engineering With Computers     Hybrid Journal   (Followers: 5)
Engineering, Technology & Applied Science Research     Open Access   (Followers: 1)
ENP Engineering Science Journal     Open Access  
Entramado     Open Access  
Entre Ciencia e Ingeniería     Open Access  
Entropy     Open Access   (Followers: 5)
Environmental & Engineering Geoscience     Full-text available via subscription   (Followers: 5)
Environmental and Ecological Statistics     Hybrid Journal   (Followers: 7)
Environmetrics     Hybrid Journal  
Épités - Épitészettudomány     Full-text available via subscription   (Followers: 1)
EPJ Photovoltaics     Open Access   (Followers: 2)
Ergonomics in Design: The Quarterly of Human Factors Applications     Hybrid Journal   (Followers: 21)
ESAIM: Control Optimisation and Calculus of Variations     Open Access   (Followers: 2)
ESAIM: Mathematical Modelling and Numerical Analysis     Open Access   (Followers: 5)
ESAIM: Proceedings     Open Access  
eScience     Open Access   (Followers: 1)
Estuaries and Coasts     Hybrid Journal   (Followers: 22)
EUREKA : Physics and Engineering     Open Access  
Euro-Mediterranean Journal for Environmental Integration     Hybrid Journal  
European Journal of Combinatorics     Full-text available via subscription   (Followers: 3)
European Journal of Engineering Education     Hybrid Journal   (Followers: 9)
European Journal of Lipid Science and Technology     Hybrid Journal   (Followers: 1)
European Journal of Mass Spectrometry     Hybrid Journal   (Followers: 16)
European Physical Journal - Applied Physics     Full-text available via subscription   (Followers: 19)
European Transport Research Review     Open Access   (Followers: 22)
Evolutionary Intelligence     Hybrid Journal   (Followers: 2)
Evolving Systems     Hybrid Journal  
Experimental and Computational Multiphase Flow     Hybrid Journal  
Experimental Techniques     Hybrid Journal   (Followers: 51)
Experiments in Fluids     Hybrid Journal   (Followers: 17)
Farm Engineering and Automation Technology Journal     Open Access  
Fibers and Polymers     Full-text available via subscription   (Followers: 4)
FIGEMPA : Investigación y Desarrollo     Open Access   (Followers: 1)
Filtration & Separation     Full-text available via subscription   (Followers: 4)
Finite Fields and Their Applications     Full-text available via subscription   (Followers: 5)
Fırat University Turkish Journal of Science & Technology     Open Access  
Fire Science Reviews     Open Access   (Followers: 12)
Flexible Services and Manufacturing Journal     Hybrid Journal   (Followers: 2)
Flow, Turbulence and Combustion     Hybrid Journal   (Followers: 30)
Fluid Dynamics     Hybrid Journal   (Followers: 27)
Fluid Phase Equilibria     Hybrid Journal   (Followers: 4)
Focus on Catalysts     Full-text available via subscription  
Focus on Pigments     Full-text available via subscription   (Followers: 3)
Focus on Powder Coatings     Full-text available via subscription   (Followers: 5)
Focus on Surfactants     Full-text available via subscription   (Followers: 2)
Food Engineering Reviews     Hybrid Journal   (Followers: 2)
Food Science and Technology     Open Access   (Followers: 2)
Forces in Mechanics     Open Access   (Followers: 2)
Formación Universitaria     Open Access   (Followers: 4)
FORMakademisk - forskningstidsskrift for design og designdidaktikk     Open Access   (Followers: 2)
Formal Methods in System Design     Hybrid Journal   (Followers: 6)
Forschung     Hybrid Journal   (Followers: 1)
Forschung im Ingenieurwesen     Hybrid Journal  
Foundations and Trends in Systems and Control     Full-text available via subscription   (Followers: 4)
Foundations and Trends® in Communications and Information Theory     Full-text available via subscription   (Followers: 6)
Foundations and Trends® in Electronic Design Automation     Full-text available via subscription   (Followers: 1)
Foundations of Science     Hybrid Journal   (Followers: 1)
Frontiers in Aerospace Engineering     Open Access   (Followers: 20)
Frontiers in Energy     Hybrid Journal   (Followers: 4)
Frontiers in Nanotechnology     Open Access   (Followers: 1)
Frontiers of Environmental Science & Engineering     Hybrid Journal   (Followers: 3)
Fuel and Energy Abstracts     Full-text available via subscription   (Followers: 7)
Fuel Cells     Hybrid Journal   (Followers: 8)
Fuel Cells Bulletin     Full-text available via subscription   (Followers: 9)
Fusion Engineering and Design     Hybrid Journal   (Followers: 6)
Fuzzy Information and Engineering     Open Access   (Followers: 2)
Fuzzy Sets and Systems     Hybrid Journal   (Followers: 3)
Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards     Hybrid Journal   (Followers: 8)
Géotechnique     Hybrid Journal   (Followers: 27)
Geothermics     Hybrid Journal   (Followers: 7)
Glass Technology - European Journal of Glass Science and Technology Part A     Full-text available via subscription   (Followers: 1)
Global Journal of Engineering Research     Full-text available via subscription  
Global Transitions Proceedings     Open Access  
GPS Solutions     Hybrid Journal   (Followers: 28)
Graphs and Combinatorics     Hybrid Journal   (Followers: 4)
Grass and Forage Science     Hybrid Journal   (Followers: 4)
Groundwater for Sustainable Development     Full-text available via subscription   (Followers: 5)
Heat Transfer - Asian Research     Hybrid Journal   (Followers: 10)
Heat Transfer Engineering     Hybrid Journal   (Followers: 36)
Heat Treatment and Surface Engineering     Open Access  
High Voltage     Open Access  
Himalayan Journal of Science and Technology     Open Access  
Historical Records of Australian Science     Hybrid Journal   (Followers: 2)
Human Behavior and Emerging Technologies     Hybrid Journal   (Followers: 1)
Human Factors in Ergonomics & Manufacturing     Hybrid Journal   (Followers: 12)
Human-Intelligent Systems Integration     Hybrid Journal  
I+D Revista de Investigaciones     Open Access  
IBM Journal of Research and Development     Hybrid Journal   (Followers: 16)
IEEE Antennas and Propagation Magazine     Hybrid Journal   (Followers: 112)
IEEE Antennas and Wireless Propagation Letters     Hybrid Journal   (Followers: 88)
IEEE Communications Magazine     Full-text available via subscription   (Followers: 139)
IEEE Embedded Systems Letters     Hybrid Journal   (Followers: 60)
IEEE Engineering Management Review     Full-text available via subscription   (Followers: 117)
IEEE Geoscience and Remote Sensing Letters     Hybrid Journal   (Followers: 150)
IEEE Geoscience and Remote Sensing Magazine     Hybrid Journal   (Followers: 6)
IEEE Industry Applications Magazine     Full-text available via subscription   (Followers: 82)
IEEE Instrumentation & Measurement Magazine     Hybrid Journal   (Followers: 148)
IEEE Journal of Biomedical and Health Informatics     Hybrid Journal   (Followers: 14)
IEEE Journal of Oceanic Engineering     Hybrid Journal   (Followers: 11)
IEEE Journal of Selected Topics in Quantum Electronics     Hybrid Journal   (Followers: 7)
IEEE Journal of Selected Topics in Signal Processing     Hybrid Journal   (Followers: 43)
IEEE Journal of Solid-State Circuits     Full-text available via subscription   (Followers: 24)
IEEE Journal on Selected Areas in Communications     Hybrid Journal   (Followers: 39)
IEEE Latin America Transactions     Full-text available via subscription   (Followers: 2)
IEEE Magnetics Letters     Hybrid Journal   (Followers: 7)
IEEE Microwave and Wireless Components Letters     Hybrid Journal   (Followers: 35)
IEEE Microwave Magazine     Full-text available via subscription   (Followers: 63)
IEEE Nanotechnology Magazine     Hybrid Journal   (Followers: 45)
IEEE Open Journal of Engineering in Medicine and Biology     Open Access   (Followers: 1)
IEEE Open Journal of Nanotechnology     Open Access   (Followers: 1)
IEEE Potentials     Full-text available via subscription   (Followers: 42)
IEEE Reviews in Biomedical Engineering     Hybrid Journal   (Followers: 19)
IEEE Signal Processing Letters     Hybrid Journal   (Followers: 60)
IEEE Solid-State Circuits Magazine     Hybrid Journal   (Followers: 11)
IEEE Spectrum     Full-text available via subscription   (Followers: 219)
IEEE Technology and Society Magazine     Full-text available via subscription   (Followers: 8)
IEEE Transactions on Advanced Packaging     Full-text available via subscription   (Followers: 8)
IEEE Transactions on Antennas and Propagation     Full-text available via subscription   (Followers: 79)
IEEE Transactions on Applied Superconductivity     Hybrid Journal   (Followers: 5)
IEEE Transactions on Automation Science and Engineering     Full-text available via subscription   (Followers: 13)
IEEE Transactions on Autonomous Mental Development     Hybrid Journal   (Followers: 8)
IEEE Transactions on Biomedical Engineering     Hybrid Journal   (Followers: 35)
IEEE Transactions on Broadcasting     Hybrid Journal   (Followers: 11)
IEEE Transactions on Circuits and Systems II: Express Briefs     Hybrid Journal   (Followers: 20)
IEEE Transactions on Components and Packaging Technologies     Full-text available via subscription   (Followers: 17)
IEEE Transactions on Control Systems Technology     Hybrid Journal   (Followers: 111)
IEEE Transactions on Education     Hybrid Journal   (Followers: 11)
IEEE Transactions on Electronics Packaging Manufacturing     Hybrid Journal   (Followers: 21)
IEEE Transactions on Energy Conversion     Hybrid Journal   (Followers: 16)
IEEE Transactions on Engineering Management     Hybrid Journal   (Followers: 74)

  First | 1 2 3 4 5 6 7 | Last

Similar Journals
Journal Cover
Engineering Journal of Research and Development
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 0857-7951
Published by Engineering Institute of Thailand Homepage  [1 journal]
  • STRESS SCORE OF CIVIL ENGINEERING STAFF IN THE ROAD CONSTRUCTION PROJECT
           OF THAILAND

    • Authors: Suphachai Yordsawad, Natee Suriyanon
      Pages: 9 - 22
      Abstract: This research was conducted as following. First, the research investigated the stress score of civil engineering staff in 56 projects of the department of rural roads which were carried out from July 2020 to December 2020. The results revealed that out of the full score of 100.00 point, the sample group’s average stress score was 50.16 points. The median score was 49.00 point and the lowest and highest scores were 20.00 point and 80.00 point, respectively. Categorizing the sample group according to stress levels showed that the groups with severe stress, high stress, moderate stress, and low stress accounted for 22.80%, 45%, 29.30%, and 2.90%, respectively. Second, the study analyzed the relationship between individual and career factors and stress scores. It appeared that gender, family income, and job positions had a significant relationship with stress scores, at a statistical significance of 0.05. Third, the research created a multiple linear regression model to predict stress scores, for which five individual and career factors were selected for inclusion: having excess income (family income), working as a foreman or a civil engineer, being male (gender), being 41 to 50 years of age (age), and having to work seven days a week (the number of workdays per week). The predicting power of the aforementioned model was at 13.10 %.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • EFFECT OF WET-DRY CONDITION ON COMPRESSIVE STRENGTH OF SOIL IMPROVEMENT
           WITH CEMENT AND FLY ASH-BASED GEOPOLYMER

    • Authors: Chinnawat Srichat, Dolrerdee Hormdee
      Pages: 23 - 34
      Abstract: At present, Ordinary Portland Cement has been widely used to improve the soil for highway base course. However, cement manufacturing process impacted on the environment. Geopolymer was chosen to replace the Ordinary Portland Cement for soil improvement in this research. This research was aimed to study the effect of wet-dry condition on unconfined compressive strength (UCS) of soil stabilized with Portland cement and fly ash-based geopolymer. Percentage of cement was 5 7 9 and 11 by mass and percentage of fly ash was 10 20 and 30 by mass. NaOH solution of 10 molar and various mix design at different fly ash/akali activator ratio and Na2SiO3/NaOH ratio were used to preparation specimens and cured for 2 7 and 28 days at room temperature. Each mixture was tested for UCS in accordant to the soil cement standard from the Portland Cement Association was used to perform wet-dry condition test. Wet-dry condition test was divided into 2 sets. The first set was used to conduct the UC test after through the process and the second set was determined the durability of the specimens. The results, revealed that the compressive strength of soil cement tended to decrease after processing and the mass loss percentage was 11.06. The unconfined compressive strength (UCS) of soil geopolymer tended to increase after the wet and dry condition and the mass loss percentage was 6.80. It was concluded that soil geopolymer exhibited the performance in withstanding the wet and dry condition better than soil cement.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • IMPROVEMENT OF COMPRESSIVE STRENGTH AND DURABILITY FOR BASE LAYER WITH
           GEOPOLYMER MATERIALS BY USING BAGASSE ASH AND RICE HUSK ASH

    • Authors: Atthaphon Phra-khote, Dolrerdee Hormdee
      Pages: 35 - 48
      Abstract: Loess soil in dry conation is easily lost its strength and collapsed when increased its moisture content for a sufficient time. The of objective this research is to study the improvement of the loess soil with bagasse and rice husk ash-based geopolymer material, compared with the standard of Department of Highways dh-s. 204/2556 for soil cement. The unconfined compression test and durability test in term of wet-dry process method were conducted in laboratory. The specimens were prepared as 95% modified compaction with optimum liquid content. For geopolymer, curing temperature of 70, 90 and 110 ๐C were used for 1 day then curing with room temperature up to 2, 7 and 28 days for curing time, respectively. The ratio of sodium silicate and sodium hydroxide of 1:3 is used. The results shown that for 7-day curing time, the maximum compressive strength was obtained from the lower percentage of bagasse ash with rice husk ash, BA10RH5 at the curing temperature of 70๐C but at higher curing temperature, the maximum compressive strength was obtained from the lower percentage of bagasse ash without rice husk ash, BA10 and that compressive strength were more than the compressive strength of soil-cement, SC5. In term of durability, the SC5, BA10-70 and BA10RH5-90 were chosen using wet-dry method. The percentage of loss in SC5 is 11.06% that was more than those of BA10-70 and BA10RH5-90 as 4.57% and 9.05%, respectively. The results of percentage of loss were related to their corresponding compressive strength.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • UTILIZATION OF GEOPOLYMER ON IMPROVEMENT OF LOESS SOIL USING PALM OIL FUEL
           ASH AND GRANULATED BLAST FURNACE SLAG

    • Authors: Wuttichai Phudphong, Dolrerdee Hormdee
      Pages: 49 - 60
      Abstract: This research was aimed to improve the loess soil for base course using palm oil fuel ash and granulated blast furnace slag – based geopolymer and compared to the conventional soil cement. The unconfined compression test and wet-dry durability test were performed in laboratory. The ratio cement is 5, 7, 9, and 11 percent by mass with the room temperature curing for 2, 7, and 28 days. Soil geopolymer used palm oil fuel ash of 5 and 10 percent by mass and 5 percent of palm oil fuel ash mixed with 3 percent granulated blast furnace slag by mass. The concentration of sodium hydroxide solution of 10 molars with the ratio of sodium silicate and sodium hydroxide of 1:3 was used as alkali base. The determined curing phase was 2, 7, and 28 days, controlling temperature at 70, 90, and 110 degrees of Celsius at the first day. The results shown that the soil geopolymer using palm oil fuel ash mix granulated blast furnace slag 5 with 3 percent by mass provided higher strength than using palm oil fuel ash 5 percent by mass about 2.8 percent at 70 degrees of Celsius at curing 28 days, and by exhibited higher strength than soil cement used 5 percent about 11.7 percent. In the term of percent weight loss on durability test, geopolymer using palm oil fuel ash with granulated blast furnace slag provided just littlebit more than using palm oil fuel ash as 0.3 percent and less than soil cement used 5 percent is 3.1 percent.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • EFFECTS OF GLOBAL CLIMATE CHANGE ON EXTREME RAIN IN PONG DISTRICT AND
           CHIANG KHAM DISTRICT, PHAYAO PROVINCE

    • Authors: Thanakit Thepumong, Piyapong Chankawee, Thanakorn Chompoorat, Preeda Chaimahawan, Somboon Shaingchin
      Pages: 61 - 78
      Abstract: Nowadays, the global warming is becoming more intense issue for human. Due to daily human activities, greenhouse gases are increased and they affects the global climate change. One of the effects of the global climate change is heavy rainfall events in many regions around the world. As aforesaid, the north of Thailand also confronts this issue, heavy rainfall, for example in 2010, heavy rainfall caused landslide damaging many people lives and property in Pong and Chiang Kham districts of Phayao province. Consequently, this paper aims to study the effect of the climate change causing the heavy rainfall event in Pong and Chiang Kham districts of Phayao province. The general circulation models (GCMs) using statistical minification are utilized for explanation of the future climate exchange in term of daily rainfall. The results were then predicted the rainfall and heavy rainfall occurrence in the future by comparing with the real observation data from meteorological station in the past. From this study, the result concluded that the rainfall in Pong district has increased approximately 8.0% - 30.0% during 2012-2098. Also, Chiang Kham district has increased 9.0%-35.0% during 2011-2099. Finally, the results of rainfall from GCMs in the future can be used for being on guard of future flood and landslide in the study area.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • HYBRID SOLAR PUMP INVERTER

    • Authors: Panuwat Janbamroong, Chukait Nitayotan, Supachoke Techaudomtaworn, Aummarin Yampraywong, Pennapa Pirodamonchai
      Pages: 79 - 90
      Abstract: This paper presents the design of a hybrid solar water pump inverter which is an alternative for the use of solar energy as a substitute for electric power. The hybrid solar water pump inverter is a system that uses both electricity and solar energy. Therefore, this system can be used in areas where electricity is not accessible, such as in a farm, garden, or remote area. And in the case of using of electric energy and solar energy together, the hybrid solar water pump inverter can be work all the time as needed and reduce electricity consumption. In the event of a power failure, the hybrid solar water pump can use the solar energy and run continuously without stopping the pump. The designed hybrid solar water pump is developed to be compatible both with 1-phase and 3-phase induction motor pump. It has important functions for using efficiently including Maximum Power Point Tracking (MPPT) for solar panel and Power Factor Correction (PFC) for AC input current. In addition, three power modes can be adjusted as appropriate: Grid mode that uses electricity only, Hybrid mode that uses electricity and solar energy together, and Stand-Alone mode that uses solar energy only.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • COOLING PERFORMANCE OF THERMOELECTRIC COOLER BOX USING WATER COOLING
           SYSTEM

    • Authors: Chocktawee Suriyawattanasin, Thanansak Theppaya, Warakorn Suwanruengsri, Ukrit Ramchaunchorn
      Pages: 91 - 100
      Abstract: Currently, thermoelectric has been increasingly applied to various cooling equipment. It is commonly used in a small-size refrigeration system or in portable cooler box for cold storage. This research studied power supplies to thermoelectric affecting the cooling performance (COP) in a 17.5 L cooler box without cooling load. In experiment, electric power ranging from 19.3-74.1W was supplied to TEC1-12715 modules while airflow inside cooler box was kept at 32 cfm. A 90 L/h cooling water was circulated through a water block, attached on hot side of thermoelectric, and removed heat via radiator. The results showed that maximum COP was 0.53 occurred at cooling rate (qc) of 8.2 W and input power of 19.3 W. A maximum cooling rate of 18.7 W was achieved at 74.1 W input power, and consequently 0.32 COP. It can be seen that the maximum power input to the thermoelectric was not resulted in the maximum qc and COP concurrently. If optimum cooling rate was required, the thermoelectric modules must be powered in the range of 43.3-58.8 W to keep the lowest temperature in the cooling box by 2.0 ± 0.5 °C.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
  • SALES FORECASTING FOR GREEN FISHING NET: A CASE STUDY OF MANUFACTURE
           FISHING NET AND POLY ROPE COMPANY

    • Authors: Jutathip Leelathanapiat, Piyaphon Paichit, Orawan Reangsephet, Jitpatima Loysoongnern, Supanwipha Khunwiset, Wannaphon Suriyakat
      Pages: 101 - 111
      Abstract: This study aimed to propose the appropriate forecasting method for sales of Green fishing net 380/18 with trend and seasonal components. In this study, the four methods, including decomposition method, Box-Jenkins method, exponential smoothing adjusted for trend and seasonal variation: Winter’s method, and Grey method, were considered. The mean absolute percentage error was uesd as the criterion for comparing the efficiency of the methods. The results revealed that the appropriate method to predict the Green fishing net 380/18 data is the exponential smoothing adjusted for trend and seasonal variation with multiplication model provide the lowest mean absolute percentage error, having the lowest mean absolute percentage error.
      PubDate: 2022-03-09
      Issue No: Vol. 33, No. 1 (2022)
       
 
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