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All Journal Jurnal Teknologi Prosiding Semnastek Journal of Applied Sciences and Advanced Technology
Hasan Basri
Universitas Muhammadiyah Jakarta
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering

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Design of Water Heating By Utilizing Waste Heat of Air Conditioner Hasan Basri; Ery Diniardi; Anwar Ilmar Ramadhan
Journal of Applied Sciences and Advanced Technology Vol 3, No 3 (2021): Journal of Applied Sciences and Advanced Technology
Publisher : Faculty of Engineering Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jasat.3.3.89-96

Abstract

This plan aims to minimize wasted energy in the air freshener system and utilize the wasted energy to heat water. Here using a split type air conditioner system which is commonly used. The author slightly modified the air conditioning system which previously used an air conditioning condenser, here the author added a condenser with a water cooler that functions as a condenser and at the same time as a water heater. The energy used to heat the water is obtained from the heat released by the refrigerant so as to minimize the energy wasted when only using an air conditioning condenser. But the air conditioning condenser is still used in this system, because when hot water is not needed, the water in the heater does not flow and of course cannot take heat from the refrigerant. In this condition the air conditioning condenser can work to help the process of releasing heat from the refrigerant. This tool can heat water up to 43oC with a flow rate of 1 liter per 9 seconds which can be used at home, SOHO, office for bathing, washing face, washing hands, etc.
STUDI EKSPERIMENTAL PERPINDAHAN PANAS DAN PENURUNAN TEKANAN DARI HIBRIDA NANOFLUIDA DI PENDINGIN RADIATOR MOBIL Ery Diniardi; Hasan Basri; Anwar Ilmar Ramadhan; Deni Almanda; Alvika Meta Sari
Jurnal Teknologi Vol 14, No 2 (2022): Jurnal Teknologi
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/jurtek.14.2.221-232

Abstract

The use of nanoparticle coolants in car radiators increases the rate of heat transfer and allows for a smaller overall radiator size. The transfer characteristics of hybrid nanofluids with various compositions of TiO2-SiO2 (40:60, 60:40, 80:20) based water/EG nanoparticles for a volume concentration of 1.0% were investigated experimentally. By dispersing the hybrid nanofluids in a mixture of water/ethylene glycol (60:40), the composition of the TiO2-SiO2 nanoparticles (40:60, 60:40, 80:20) was varied for a volume concentration of 1.0%. Experiments were carried out using a coolant flow rate between 2-12 LPM for a working fluid temperature of 70 °C, while the air flow velocity remained constant at an average of 4 m/s, to understand the effect of coolant flow velocity on heat transfer. The thermal performance of hybrid nanofluids in a water/EG mixture (60:40) was investigated for variations in the composition of TiO2-SiO2 nanoparticles (40:60, 60:40, 80:20) for a volume concentration of 1.0% and a working temperature of 70 °C. The heat transfer coefficient obtained is 32.1%, the maximum increase occurs in the TiO2-SiO2 nanofluid with the composition (40:60), while the 29.2% increase occurs in the nanofluid hybrid (60:40), for the nanofluid hybrid (80:20) it is an increase of 31.1%.
Co-Authors A I Ramadhan Alvika Meta Sari Anwar Ilmar Ramadhan Deni Almanda Ery Diniardi Firmansyah Firmansyah Jaref Darmawan Kisman H Mahmud N Nelfiyanti Rasma Rasma Syawaluddin Syawaluddin