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Analisis Temperature Humidity Index (THI) terhadap Kenyamanan Termal dengan Penambahan Tumbuhan Hijau pada Gedung Bertingkat Harmin, Amalia; Isra, Muhammad; Fauzan, Fauzan; Bravikawati, Marini; Naziah, Afrahun; Kasim, Bukhari
Malikussaleh Journal of Mechanical Science and Technology Vol. 9 No. 1 (2025): Malikussaleh Journal of Mechanical Science and Technology (MJMST)
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v9i1.21763

Abstract

Aceh Province is experiencing rapid changes in infrastructure along with population growth and globalization and urbanization. This development and growth has led to a significant increase in the construction of high-rise buildings in urban areas. In multi-storey buildings, the use of materials that have a low albedo against solar radiation, so that a lot of radiation is absorbed and stored in the form of heat in the building so that it can increase the temperature of the building up to 12 °C. The absence of heat absorbers such as green plants around the building affects the thermal comfort of building occupants. Thermal comfort can be measured using various parameters, one of which is the Temperature Humidity Index (THI). The use of green plants of the type of Sansevieria Ttrifasciata which is used as a building envelope for 7 days on the 2nd floor of the Samudra University Laboratory building to measure the temperature difference after being absorbed first by the (Sansevieria Ttrifasciata) in the photosynthesis process. The results show that the THI thermal comfort index is reached at 25°C to 26°C with the conditions shown based on the ASHRAE 55 standard is thermally comfortable.
Rancang Bangun Mesin CNC Laser Engraving Berbasis Arduino untuk Edukasi Teknologi CNC Kasim, Bukhari; Usman, Usman; Sumardi, Sumardi; Razi, Muhammad; Saputra, Edi; Harmin, Amalia
Jurnal Mekanova : Mekanikal, Inovasi dan Teknologi Vol 11, No 1 (2025): April
Publisher : universitas teuku umar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35308/jmkn.v11i1.11693

Abstract

Mesin laser engraving CNC merupakan suatu alat yang dapat digunakan untuk memotong dan mengukir berbagai jenis material dengan tingkat presisi yang tinggi. Penelitian ini bertujuan untuk merancang dan membangun mesin laser engraving CNC sebagai media pembelajaran bagi mahasiswa Jurusan Teknik Mesin. Proses perancangan meliputi pemilihan komponen, pembuatan rangka, dan integrasi sistem kendali berbasis Arduino controller dan software GRBL. Mesin ini dirancang untuk digunakan dalam kegiatan demonstrasi dan praktikum terkait prinsip kerja mesin CNC, pemrograman, dan pengoperasian sistem kendali numerik pada mesin. Hasil penelitian menunjukkan bahwa gerak sumbu x, y, z sebelum dikalibrasi memiliki error sebesar 80,6%, 78,2%, 76,3% dan setelah dikalibrasi sebesar 0,2%, 2,3%, 0,3% untuk setiap sumbu secara berurutan. Nilai error ini turun menjadi 0,2%, 2,3% dan 0,3% setelah proses kalibrasi sumbu x, y, dan z. Hasil tersebut menunjukkan bahwa mesin laser engraving CNC yang dibangun dapat berfungsi dengan baik, menghasilkan ukiran dan pemotongan yang presisi sesuai dengan spesifikasi yang diberikan. Penggunaan mesin ini sebagai media pembelajaran diharapkan dapat meningkatkan pemahaman mahasiswa di bidang manufaktur modern dan teknologi CNC, serta memperkuat keterampilan teknisnya
The Effectiveness of Hanging Ornamental Plants in Absorbing solar Radiation for Enviromental Temperature Control Harmin, Amalia; Muhammad Isra; Fauzan; Marini Bravikawati; Sarah Niaci; Afrahun Naziah; Bukhari Kasim; Akbar Rizqullah
Malikussaleh Journal of Mechanical Science and Technology Vol. 9 No. 2 (2025): Malikussaleh Journal of Mechanical Science and Technology (MJMST)
Publisher : E-Journal Universitas Malikussaleh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29103/mjmst.v9i2.25013

Abstract

Global climate change, characterized by an increase in the average temperature of the Earth, is an important issue that affects human life. One of the phenomena that occurs is the Urban Heat Island (UHI) phenomenon. This phenomenon occurs due to the lack of green plants that function as absorbers of solar heat. However, the effectiveness of plants in absorbing solar heat can vary. Therefore, experimental scientific studies are needed to determine the extent to which hanging ornamental plants can absorb solar heat. This study tested five types of hanging ornamental plants to obtain heat absorption values, namely Epipremnum aureum, Chlorophytum comosum, Paperomia hopei, Discidia geri, and Tradescantia spatcheae. The results of the study found that Chlorophytum Comosum (spider plant) had the highest heat absorption value of 1 kJ. This study contributes to providing solutions for controlling environmental temperature.
Co-Authors Abd Rani Afrahun Naziah Akbar Rizqullah Akhyar Ibrahim Amalia Harmin Anwar Anwar Aris Khatami Azwar Yunus Dailami Dailami Dara Rauzatul Jannah Darmadi, Herry Darmein Darmein EDI SAPUTRA Edi Saputra Farhan Farhan Fauzan Fauzan Firdaus Firdaus Haikal, Rahmat Hamdani Hamdani Hamdani, Hamdani Ifwal Afwadi Ilyas Ilyas Ilyas Yusuf Ilyas Yusuf Marini Bravikawati Marzuki Marzuki Mawardi Mawardi Mawardi Mawardi Muhammad Isra Muhammad Isra Muhammad Razi Muhammad Razi Nawawi Juhan Nawawi Juhan Naziah, Afrahun Nelza, Novia Rahmansyah, Abdul Azis Sarah Niaci Simanjuntak, Agus Wiranto Sumardi . Sumardi Sumardi Turmizi Turmizi Turmizi Turmizi Usman Usman Usman Usman Wahyu Agung Almuzikri Yunus, Azwar Zainal Fakri Zuhaimi Zuhaimi