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All Journal International Journal of Education, Social Studies, And Management (IJESSM) Andalasian International Journal of Applied Science, Engineering, and Technology
Diyajeng Luluk Karlina
Universitas Sultan Ageng Tirtayasa, Indonesia
Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Mechanical Engineering Other

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Design Cooling Load on Economy Passenger Train Type K3-438 using Thermodynamic Physics Diyajeng Luluk Karlina; Choirul Mufit
Andalasian International Journal of Applied Science, Engineering and Technology Vol. 4 No. 1 (2024): March 2024
Publisher : LPPM Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/aijaset.v4i1.120

Abstract

Abstract— Factors that influence comfort on trains are thermal comfort factors. Thermal comfort is a thermal interaction between humans and their surroundings that satisfies the human mind. The principle of thermal comfort itself is related to the surrounding body temperature. Because if the human body temperature and the environment have a significant temperature difference, discomfort will occur. Research aims to design an effective air conditioning system to produce a better air supply so that it can overcome the problem of thermal comfort in trains. The first methodology for this research was collecting primary and secondary data. Primary data includes data on train size, construction, type of equipment, and number of passengers. While secondary data is data on design conditions. To determine the value of the cooling load, it is necessary to analyze the heat load in the train which includes sensible heat load and latent heat load. The results of this research obtained a total sensible heat value of 86371.19 Btu/hr. And the total latent heat is 73855.839 Btu/hr. Based on the results of research that has been carried out, it can be Conclusions were drawn from the calculation of the cooling load on the Type K3-438 Passenger Train with a capacity of 94 passengers. It was concluded that the minimum cooling load required was 40412.48 kcal/hr. Keywords: Cooling Load, Thermal Comfort, Passenger Train, Thermodynamic Physics
Implementation Minimum Competency Assessment to Improve Literacy Numeracy in Class V Students of Elementary School Diyajeng Luluk Karlina
International Journal Of Education, Social Studies, And Management (IJESSM) Vol. 5 No. 3 (2025): The International Journal of Education, Social Studies, and Management (IJESSM)
Publisher : LPPPIPublishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52121/ijessm.v5i3.876

Abstract

This research was motivated by observation data which showed that the numeracy literacy abilities of class V students were quite low. The implementation of this research aims to equip students with better thinking skills regarding various problems that arise in questions through a minimum competency assessment which is carried out in two stages, namely pre-test and post-test. This activity was carried out in class V, which was attended by 15 students. The research method consists of three stages, namely planning, implementation and evaluation. The results of this service show a significant increase in students numeracy literacy skills. The increase in the minimum competency assessment score in class V is supported by the successful implementation of the work program that has been designed. From the pre-test to post-test minimum competency assessment activities, there was a good improvement and a fairly high increase in students numeracy literacy skills.
Co-Authors Mufit, Choirul