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All Journal Vortex Jurna Beta Kimia
Hamdani, Taufik
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Aerospace Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Earth & Planetary Sciences Education Energy Materials Science & Nanotechnology Mechanical Engineering

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PERANCANGAN WATER HEATER KAPASITAS 0,1 LITER PER DETIK DENGAN MEMANFAATKAN PANAS MATAHARI UNTUK MENDUKUNG KETAHANAN ENERGI Hamdani, Taufik; Sudarmanto, Sudarmanto; Setiabudi, Dedet Hermawan; Mardwianta, Benedictus; ahmadi, Nurfi; subarjo, Abdul haris; irawati, Mardiana
Vortex Vol 4, No 2 (2023)
Publisher : Institut Teknologi Dirgantara Adisutjipto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28989/vortex.v4i2.1667

Abstract

Population growth and technology development are increasing rapidly. These cause the use of energy on the earth is increasing. One effort to obtain energy sources is to utilize solar energy using solar water heater. This research was expected to help the society to save energy derived from fossils. A testing was conducted by designing solar water heater with collector size of 60 cm x 50 cm using black painted aluminum-coated styrofoam insulator and the storage tank made of stainless steel with volume of 40 liter using black painted aluminum-coated styrofoam. In conducting the testing, the data were taken at 09.00 a.m until 04.00 p.m for 5 days. The research was conducted at ITD Adisutjipto. The analysis and discussion showed the solar water heater design and the storage tank used to perform performance the test (efficiency). Within 5 days testing the average of water temperature out (Tout) was 59.75 oC to 76.59 oC with the average rate efficiency of 54.07 % to 54.9 % and the average storage drop rate of 2.97 K / Hr or 17.84 K for 6 hours
Integration of Multi-Index Method and Qual2kw Evaluation Modeling of Quality Status and Pollutant Dispersion Pattern of Perian River in Kutai Kartanegara Fitria Sari, Dwi; Hamdani, Taufik; Kalauw, Syelvialousiana Ningsih; Ermawati, Rina; Kartika, Rudi; Hadi Raharjo, Slamet Ningsih
Jurnal Beta Kimia Vol 6 No 1 (2026): Volume 6 Issue 1, May 2026
Publisher : Universitas Nusa Cendana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35508/jbk.v6i1.28211

Abstract

This study is intended to assess water quality and determine the pollution status of the Perian River in its upstream (Perian Village) and downstream (Muara Aloh Village) sections in 2025. (COD) parameters. The findings reveal a marked deterioration in water quality from the upstream to the downstream segment of the river. Based on the CCME- WQI, both locations were categorized as "Poor," with scores of 61.95 (upstream) and 57.20 (downstream). The STORET method classifies the upstream status as "Moderately Polluted" (-23) and the downstream as "Heavily Polluted" (-42). Meanwhile, the PI method assigned a "Lightly Polluted" status to both locations. High concentrations of Nitrate (up to 42.57 mg/L) and Fecal Coliform (up to 12,976 counts/100ml) were the primary contributors to water quality degradation. The total actual COD pollution load was 25,344.52 kg/day, with the upstream area contributing a dominant share of 70.09%. Stringent conservation efforts and waste management along the river are required to prevent further degradation. This study also applied pollutant dispersion modeling using the Qual2Kw method.
Co-Authors abdul haris subarjo, abdul haris Benedictus Mardwianta, Benedictus Dedet Hermawan Setiabudi, Dedet Hermawan Ermawati, Rina Fitria Sari, Dwi Hadi Raharjo, Slamet Ningsih Kalauw, Syelvialousiana Ningsih Mardiana Irawati Nurfi Ahmadi, Nurfi Rudi Kartika, Rudi Sudarmanto Sudarmanto, Sudarmanto