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All Journal Turbo : Jurnal Program Studi Teknik Mesin Proksima
Sihombing, Tikkos
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Mechanical Engineering

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Evaluasi Unjuk Kerja Boiler: Studi Kasus pada Pabrik Pulp dan Kertas PT. ABC Nasution, Fikri Fahlevi; Khotimah, Nur; Sihombing, Tikkos; Martin, Awaludin
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3119

Abstract

In process industries or power generation, boilers are one of the first components to consume energy. Moreover, poor combustion, heat transfer fouling, and improper operation and maintenance lead to a gradual decrease in efficiency. In addition, poor fuel and water quality cause boiler performance to decrease. As a result, efficiency testing helps determine how far the boiler efficiency deviates from the best efficiency level. A complete energy audit of the boiler was conducted at PT. ABC Pulp and Paper Mill with ASME (American Society for Mechanical Engineers) power test code, PTC 4.1. Direct method is an input-output method, and Indirect mehod is a method of heat loss that occurs in the boiler. The direct method shows an efficiency of 84.46% and the indirect method shows an efficiency of 78.73%. Based on direct and indirect methods showing a difference of 5.73%, it is reported that the total heat loss is 21.26% where the highest is in the dry flue gas of 14.88%, namely the incoming heat energy is carried away with dry flue gas.
Energy Management and Audit of the Lighting and Air Conditioning System at the Teratak Buluh Grand Mosque, Pekanbaru City Nasution, Fikri Fahlevi; Khotimah, Nur; Martin, Awaludin; Sihombing, Tikkos
Proksima Vol 2 No 1 (2024): Jurnal ProKsima
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/proksima.v2i1.17

Abstract

Energy management and audits are important steps in improving a building's energy efficiency. Mosques, as centers of religious and social activities, often have significant energy requirements. The research methods used include field observations at the Teratak Buluh Grand Mosque, measuring energy consumption, and recommendations for saving energy use. The research results show that mosques have the potential for significant energy savings with recommendations for energy conservation opportunities that can be implemented by reducing the number of lamps used and the number of air conditioners. Previously, electrical power consumption at the Teratak Buluh Grand Mosque was 74,480.40 kWh/year with electricity costs reaching IDR 68,894,370/year. Meanwhile, electrical power usage after energy conservation opportunities (ECO) is 41,918.40 kWh/year with electricity costs of IDR 38,774,520/year, with an energy consumption intensity (IKE) value at the mosque of 13.49 kWh/m2/ month. Based on Permen No. 13 Tahun 2012 Tentang Penghematan Energi Listrik, this value is included in the fairly efficient energy consumption category.
Perancangan Sistem Air blast freezing Berkapasitas 25 Kg dengan Sistem Refrigerasi Cascade Menggunakan Refrigerant R290/R32 Martin, Awaludin; Sihombing, Tikkos; Rizqullah, Ibnu; Auliaswan, Fayzil; Mainil, Rahmat Iman
TURBO [Tulisan Riset Berbasis Online] Vol 14, No 2 (2025): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v14i2.4399

Abstract

Indonesia is a country rich in marine catch, especially shrimp commodities, with a production volume reaching 1.12 million tons, but only 220 thousand tons or approximately 19.64%, are exported. One contributing factor to the low export rate is poor temperature control throughout the cold chain supply process. The aim of this study to design and develop an air blast freezing system with a capacity of 25 kg, and to compare the design results with experimental data. The main focus of the research is to increase the cooling system’s capacity to meet the demands of the cold chain in the storage of marine catch, while maintaining product temperatures consistently between -18 °C and -25 °C. The design results for the low-temperature cycle (LTC) yielded evaporator load of 788.66 W, compressor power of 221.78 W, condenser load of 1317.64 W, and an evaporator surface area of 4.84 m². For the high-temperature cycle (HTC), the evaporator load was 1499.76 W, compressor power was 159.61 W, condenser load was 948.27 W, and condenser surface area was 8.98 m². Experimental tests showed that the system was able to reach product temperatures between -19.6 °C and -25.3 °C, with a design COP of 2.014 and an actual COP of 2.413 for the cascade system
Co-Authors Auliaswan, Fayzil Awaludin Martin Khotimah, Nur Nasution, Fikri Fahlevi Rahmat Iman Mainil Rizqullah, Ibnu