Mestro: Jurnal Teknik Mesin dan Elektro

Analisa Perbandingan Kinerja Mesin Pembuat Es Krim Menggunakan Variasi Diameter Pipa Kapiler

Ferry Sugara — 2025-06-01

Current refigeration technology has an important influence in improving the quality of food products. The purpose of this study is to find out how much the difference in performance generated from the expansion device in the form of two capillary pipes of different diameters and know the power consumption of electricity used, so that it knows the electric power per day. The method used in this study is to test the ice cream maker refrigeration system, by testing its performance by measuring the temperature and pressure in each main component when the system is steady. The results of the actual COP value of the average capillary pipe diameter of 0.028 inches are 2.16 while the actual COP value of the average capillary pipe diameter of 0.031 inches is 2.74. And the actual COP value of a 0.028 inch diameter capillary tube has a greater value of 2.16 while a capillary pipe with a diameter of 0.031 inches has a smaller value of 1.88. Whereas the biggest value of refractive efficiency at the average value is a capillary pipe with a diameter of 0.028 inches of 63.58%. While for capillary pipes with a diameter of 0.031 inches smaller the value of refraction efficiency averaged 59.49% and the cabin temperature in capillary pipes with a diameter of 0.028 inches, the average value was -9.82 ⁰C. While for capillary pipes with a diameter of 0.031 inches smaller it has a cooler average value of -9.09 ⁰C.

Rancang Bangun Programmable Logic Controller ( P L C ) Menggunakan Mikrokontroler Pic16f877 Sebagai Media Pembelajaran

Faizul Wafa Ibnu Analis — 2025-05-16

Programable logic control (PLC) is a versatile microprocessor control designed to meet practical demands in industry such as in the automatic field. In the automatic field serves as a substitute for an electro mechanical system that is to replace a series of series of relays found in conventional process control systems. Therefore, in this thesis, a research on Design (PLC) Programable Logic Controller Based on PIC16F877 Microcontroller as Learning Media has been conducted.This Micro PLC consists of a minimum system PIC16F877 microcontroller circuit. Micro PLC testing only takes a few sample cases such as I / O (input output) testing of logic gates, counter testing and timer testing. How to upload a ladder diagram to a micro PLC via a computer using the K150 programmer and Microbrn software to upload the program to a micro PLC so that the input and output modules can work according to the ladder diagram programming that has been made. From the results of micro PLC testing can be used as a PLC learning media.

Analysis of the Effectiveness of E-Learning in Enhancing English Comprehension Among Electrical Engineering Students: A Case Study in Cirebon"

Eliyawati Eliyawati — 2025-05-16

This study aims to analyses the effectiveness of e-learning in enhancing the English comprehension of Electrical Engineering students in Cirebon. The research employs a quantitative method with a journal review approach to identify trends and the effectiveness of e-learning in English learning for engineering students. The findings indicate that e-learning significantly contributes to students' comprehension improvement, particularly in reading and listening skills. Students who actively use e-learning show a 30% increase in English comprehension scores compared to those who rely solely on conventional learning methods. A total of 75% of students reported that e-learning helped them better understand technical materials in English. However, challenges remain in student interaction and learning motivation, especially in speaking and writing skills. The conclusion of this study suggests that e-learning can be an effective learning medium with proper implementation strategies, including enhancing digital interaction and developing more engaging methods for students.

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