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All Journal Jurnal JEETech Journal of English Language and Education
Peby Tri Hartati
Universitas Lancang Kuning
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Languange, Linguistic, Communication & Media Other

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Solar Energy Assisted Heat Pump Water Heater Teguh Irawan; Meiyaldi Eka Putra; Peby Tri Hartati
Jurnal JEETech Vol. 6 No. 1 (2025): Nomor 1 May
Publisher : Universitas Darul Ulum

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32492/jeetech.v6i1.6107

Abstract

A solar energy-assisted heat pump water heating system has been developed to improve household water heating efficiency. The system consists of a compressor, evaporator, capillary pipe, and condenser wrapped around a tank to avoid leakage. This study aims to evaluate the performance of the system through coefficient of performance (COP) measurements at 30 liter and 60 liter tank capacities. The test was conducted for five days with sunny weather conditions and data collection on temperature, solar radiation, and compressor power between 10:00 am and 2:00 pm. The results showed that the highest COP of 2.46 was obtained at a capacity of 60 liters, while 1.25 for a capacity of 30 liters. An increase in the final water temperature led to a decrease in COP, indicating that the system is more efficient at lower temperatures. This system shows the potential of utilizing renewable energy for efficient and economical water heating for household applications.
The Effectiveness of Educational Games for Enhancing Early Reading Skills among Children with Intellectual Disabilities Peby Tri Hartati; Tatum Derin Derin; Nisaul Hasanah; Meta Silfia Novembli; Ebnovrio Hanesty
Journal of English Language and Education Vol 11, No 2 (2026)
Publisher : Universitas Pahlawan Tuanku Tambusai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31004/jele.v11i2.2070

Abstract

Early reading skills are essential for academic learning; however, children with mild intellectual disabilities frequently experience persistent difficulties in decoding simple syllabic word structures such as consonant–vowel–consonant–vowel (CV–CV), which limits their early reading development. This study aimed to examine the effectiveness of the GEMMAS educational game in improving early reading skills of children with mild intellectual disabilities. The study employed a Single Subject Research approach with an A–B–A design. The participant was a fifth-grade student with mild intellectual disabilities at Sekolah Luar Biasa Negeri 1 Yogyakarta. Data were collected through oral and performance tests and analyzed using visual graphical analysis. The results showed an improvement in reading skills from 0% during the baseline phase to a stable level of 60% after the intervention, indicating that the GEMMAS educational game effectively enhances early reading skills.
Co-Authors Ebnovrio Hanesty Meiyaldi Eka Putra Nisaul Hasanah Novembli, Meta Silfia Tatum Derin Derin Teguh Irawan