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The Effect of Greenery Façade on Thermal Comfort in Multipurpose Building at Samudra University Harmin, Amalia; Musfirah, Rizka; Syntia, Rita
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.9567

Global climate change causes environmental temperatures to rise resulting in thermal comfort problems in humans. Thermal comfort is needed by humans in their daily lives. If thermal comfort is not met properly, it can inhibit activity, and reduce the quality of life. Humans spend 87% of their time in the building performing various activities. To improve thermal comfort in the building, air conditioning systems such as air conditioners are needed, but increased use of air conditioners will increase electricity consumption. Samudra University's multipurpose building with a glass envelope and orientation of the building in the direction of the rising sun results in direct solar radiation entering the building. The wave nature of solar radiation when it enters the glass becomes a short wave and cannot return through the glass to get out so the temperature inside increases. To minimize radiation entering the building, it is necessary to add a green facade that can absorb solar radiation heat. However, studies on the effect of green facades on buildings with glass material envelopes are still unknown. The purpose of this research is to examine how the influence of solar radiation entering the Samudra University multipurpose building on thermal comfort with experimental study methods and MATLAB simulations to obtain a thermal comfort index. The results showed that with the green façade, the indoor temperature at 12:46 pm was 38.16 ºC in the part planted with plants, while the top of the room was the hottest part because at the top there was no obstruction from the sun on the roof of the building. Based on the simulation results show that the green façade of heat entering the building undergoes absorption first so that the temperature inside the building is lower than the environment which will improve thermal comfort.

Analysis of Factors Affecting Employee Performance at Palm Oil Company PT. Betami Aceh Tamiang Helvy Ramadhani; Amalia Harmin
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 01 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i01.9585

Aceh Province is an area rich in natural resources for oil palm plantations, which can be optimized. Many oil palm companies are established in Aceh. PT Betami, as one of the many Palm Oil Plantation companies in Aceh Tamiang, must improve the performance of its employees in order to compete with competitors. This research aims to describe the factors that can influence employee performance at PT Betami, describe the performance of PT Betami employees, and analyze the influence of salary, incentives, motivation, work environment, training, and development on the performance of PT Betami employees. The research was conducted at the PT Betami Palm Oil Company on Jln. Sapta Jaya, Suka Jadi Village, Rantau District, Aceh Tamiang Regency. The research method used is a survey using observation and questionnaires. The research sample was 77 people and was calculated using the Slovin formula. Sampling was carried out using the Simple Random Sampling technique. Data analysis was done using descriptive and multiple linear regression analyses using SPSS. The research results show that the performance of PT Betami employees is excellent. Salary, incentives, motivation, work environment, training, and development can influence PT Betami employees' performance. Motivation and incentives can influence employee performance in the highest category.

Design and Construction of a Machine for Squeezing Avocado Seeds into Oil as a Raw Material for Biodiesel Using a Screw Press Munawar Reza; Muqadis Ilhafa; Taufan Arif Adlie; Zainal Arif; Teuku Azuar Rizal
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 01 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i01.9757

The manufacturing industry is growing rapidly, especially in terms of industrial workshops. According to BPS data for 2017, in 2016 the development of the manufacturing industry increased by 4.74%. Engineering design or machine design is a series of processes that translate the results of a system into performance, to explain work in detail on the components used. Mechanical pressing is the process of extracting fat or oil through pressure applied to grains with an oil content of around (30%-70%). The aim of the research is to design a machine for squeezing avocado seeds into oil using a screw press, to obtain the length of time for pressing avocado seeds using a screw press and the percentage of biodiesel raw material oil obtained from avocado seeds in 1 kg after going through degumming. This research was carried out using the machine design method, calculating the length of pressing time and the amount of avocado seed seepage. The load pressure on the press is 360 N/m with an electric motor capacity of 0.88 HP and a rotation speed of 17.5 ????????m. Pressing 1 kg of avocado seeds is 58:39 seconds then the raw material for biodiesel oil is 23 grams/1 kg.

Design and Fabrication of a Single-Stage U-Type Savonius Wind Turbine Using Low Wind Speeds and Water Hyacinth Composite Material Suheri Suheri; Syamsul Bahri Widodo; Zainal Arif; Iskandar Yacob; Muhammad Syafii
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 01 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i01.10215

This research created an innovative single-stage U-type Savonius wind turbine with water hyacinth composite material, intended for low wind speeds. With the steps of wind speed measurement, turbine rotation monitoring, and power measurement, interesting results such as a wind speed of 4.52 m/s producing a power of 5.17 volts were revealed. The significance lies in the potential of the water hyacinth composite turbine in utilizing low wind speeds to generate electricity. The conclusion notes the achievements in the manufacturing process of Savonius turbine blades and suggests that these findings provide an important basis for the development of composite-based wind turbines as an environmentally friendly renewable energy source.

Compressive Strength Analysis of Composite Blocks Made from Glass Powder and Plastic Waste Isra, Muhammad; Syntia, Rita; Harmin, Amalia; Putra Wiratama, Andika; Febi Kurnia Sari, Ceni
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 01 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i01.10237

Efforts to manage waste are being undertaken at all levels, from households to large factories that produce waste daily. The imbalance between waste production and management has made waste a significant environmental issue. One of the most challenging types of waste to decompose naturally (non-biodegradable) is plastic waste, which constitutes the largest quantity compared to other types of waste. According to statistical data, the amount of non-biodegradable waste disposed of daily at final disposal sites in several cities in Indonesia is 6,598.23 tons per day. This research has both general and specific objectives. The general objective is to utilize plastic waste as a material for making paving blocks, while the specific objective is to analyze the compressive strength properties of paving blocks made from plastic waste. By exploring the potential of plastic waste in construction materials, this study aims to provide a sustainable solution to the plastic waste problem and contribute to environmental preservation. This study used 4 types of specimens where Specimen A consisted of 80% plastic waste and 20% glass powder. Specimen B consisted of 60% plastic waste and 40% glass powder, Specimen C consisted of 40% plastic waste and 60% glass powder, Specimen D consists of 20% plastic waste and 80% glass powder. The research results showed that Specimen B achieved the highest average compressive strength value of 10.9 Mpa, indicating significant potential in supporting material strength. On the other hand, Specimen D showed the lowest average compressive strength value with only 1.2 Mpa, indicating the need for further composition adjustments to increase the material's strength. This research provides valuable insight into developing recycled materials for construction and other industrial applications.

Perkembangan dan Tantangan Transisi Energi Terbarukan dalam Bauran Energi Indonesia untuk Mencapai Nol Emisi Maliya Syabriyana
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.10810

Indonesia's journey toward a zero-emission future is a complex and multifaceted endeavor, driven by its commitment to sustainable energy practices and reducing its carbon footprint. In 2021, the Indonesian government revised and submitted its Nationally Determined Contributions (NDC), reinforcing its commitment to the Paris Agreement's goal of achieving net zero emissions by 2060 or earlier. As part of this effort, the government has set ambitious targets for the energy mix, aiming for 23% new and renewable energy by 2025 and 31% by 2050. On the path to reaching these targets, several significant strides have been made in policy development and the establishment of energy transition facilities. This article examines the progress made in the renewable energy sector, focusing on policy initiatives, progress of integration of renewable energy into the national energy grid, and its challenge. Despite these advancements, Indonesia faces substantial challenges in achieving its zero-emission goals. In conclusion, while Indonesia has made commendable progress in its renewable energy transition, realizing a zero-emission energy mix will require sustained efforts and strategic planning.

Thermal Performance Enhancement of Solar Water Heaters Using Phase Change Materials in Flat Plate Collectors Saputra Sidabutar, Baginda; A. Abdullah, Nasruddin; Abdul Rahman, Nazaruddin; Amir, Fazri
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.10363

Solar water heaters are widely utilized for domestic hot water production, leveraging solar energy as a renewable and sustainable resource. However, the intermittent nature of solar radiation limits their efficiency, particularly during periods of low solar intensity or at night. This study investigates the thermal performance enhancement of solar water heaters through the integration of phase change materials (PCMs), specifically paraffin, within flat plate collectors. The paraffin PCM is placed within an additional pipe in the collector to store excess thermal energy during peak sunlight hours and release it when solar radiation is insufficient. Experimental tests were conducted to measure temperature fluctuations, heat storage capacity, and overall system efficiency with and without PCM integration. The results indicate that the addition of paraffin PCM significantly improves the system’s ability to retain heat, maintaining water temperatures above 50 °C for extended periods and increasing the overall efficiency of the solar water heater by 17.10%. This study demonstrates the potential of PCM-enhanced solar water heaters in optimizing energy use and improving thermal efficiency, making them more effective in regions with variable solar exposure.

Effect of Carbonization Temperature of Charcoal Briquettes from Corn Cob with Gondorukem (Resina Colophonium) Adhesive on Briquette Quality Standards Johanes Saragih, Kevin; A. Abdullah, Nasruddin; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.10364

Briquettes are an alternative energy source made from agricultural waste. Apart from producing an alternative energy source, briquettes are a more efficient and income-generating solution for processing agricultural waste in Indonesia. This research obtains quality standard of briquettes due to carbonization temperature, time and variations in the ratio of adhesive. Carbonization temperature is 300-350°C, and 350-400°C with a temperature increase rate of 10 °C/minute for 15 and 30 minutes. Then the briquettes are molded with a charcoal mass ratio of 90:10 and 80:20 with adhesive. The briquettes are then tested using the SNI 1683-2021 method including calorific value, water content, ash content, volatile matter and fixed carbon. The best method for this research is Carbonization temperature on 350-400 ℃, time of carbonization and a ratio of 90% raw material and 10% adhesive (90:10) with test results of a heating value of 5,605.75 Cal/g, water content 6.29%, ash content 6.12 %, volatile matter 11.96 % and bound carbon 81.92 %.

Progress and Challenges of Renewable Energy Transition in Indonesia’s Energy Mix Towards Net Zero Emissions Syabriyana, Maliya
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.11141

Indonesia's journey toward a zero-emission future is a complex and multifaceted endeavor, driven by its commitment to sustainable energy practices and reducing its carbon footprint. In 2021, the Indonesian government revised and submitted its Nationally Determined Contributions (NDC), reinforcing its commitment to the Paris Agreement's goal of achieving net zero emissions by 2060 or earlier. As part of this effort, the government has set ambitious targets for the energy mix, aiming for 23% new and renewable energy by 2025 and 31% by 2050. On the path to reaching these targets, several significant strides have been made in policy development and the establishment of energy transition facilities. This article examines the progress made in the renewable energy sector, focusing on policy initiatives, progress of integration of renewable energy into the national energy grid, and its challenge. Despite these advancements, Indonesia faces substantial challenges in achieving its zero-emission goals. In conclusion, while Indonesia has made commendable progress in its renewable energy transition, realizing a zero-emission energy mix will require sustained efforts and strategic planning.

Analysis of Spindle Rotation Speed on Turning Results in CQ 6236 Lathe Machine Fiqri, M. Shyadul; Arif Adlie, Taufan; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.10818

The selection of turning speed is very important because the turning process affects the quality of the work, especially in the metal industry and small or medium-sized industries. To meet production needs, the rotational speed of the lathe can be adjusted to various spindle speed levels. Variations in speed will cause the workpiece to differ in terms of flatness and smoothness. The turning process begins with a linear motion along the axis of the AISI 1040 steel workpiece, with a slow feed of 2 mm. Smooth and even results were obtained at speeds of 80 rpm, 105 rpm, 160 rpm, 250 rpm, 380 rpm, 480 rpm, 750 rpm, and 1200 rpm. The turning test was conducted once with a diameter of 25 mm. The surface roughness from the turning process is influenced by various factors, including the spindle speed and the cutting angle used. Each workpiece processed on the machine tool certainly produces a different surface roughness. This research aims to determine the effect of the cutting angle and spindle speed on the surface roughness of AISI 1040 carbon steel. The Experimental Method is more suitable for this research to determine the effect of surface roughness and spindle rotation on AISI 1040 steel specimens. The material used has a diameter of 25 mm and a length of 80 mm, with a cutting depth of 2 mm. Meanwhile, the spindle speeds used were 1200 rpm, 750 rpm, 480 rpm, 380 rpm, 250 rpm, 160 rpm, 105 rpm, and 80 rpm. Surface roughness was measured using a surface roughness tester. The research results showed that the lowest surface roughness value in the specimen testing with a spindle speed of 1200 rpm was 0.679 µm, while the highest surface roughness was obtained at a spindle speed of 80 rpm, which was 5.260 µm. The conclusion of this research is that spindle speed affects the surface roughness value, where a smaller cutting angle results in a rougher surface, and a higher spindle speed results in a smoother surface.

Home Page

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Contact Name
Fazri

Contact Email
jurutera@unsam.ac.id

Phone
+6285261571533

Journal Mail Official
fazri@unsam.ac.id

Editorial Address
Jln. Prof. Dr. Syarif Thayeb, Meurandeh, Kota Langsa, Aceh, 24416

Location
Kota langsa,

Aceh

INDONESIA

Abstract

Abstract

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Abstract

Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Fazri

Contact Email jurutera@unsam.ac.id

Phone +6285261571533

Journal Mail Official fazri@unsam.ac.id

Editorial Address Jln. Prof. Dr. Syarif Thayeb, Meurandeh, Kota Langsa, Aceh, 24416

Location Kota langsa, Aceh INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Fazri

Contact Email
jurutera@unsam.ac.id

Phone
+6285261571533

Journal Mail Official
fazri@unsam.ac.id

Editorial Address
Jln. Prof. Dr. Syarif Thayeb, Meurandeh, Kota Langsa, Aceh, 24416

Location
Kota langsa,

Aceh

INDONESIA