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Journal of Environmental and Development Studies
Published by TALENTA PUBLISHER
ISSN : -     EISSN : 27454592     DOI : https://search.crossref.org/search/works?q=journal
Core Subject : Economy, Science, Social, Engineering,
Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Economics, Econometrics & Finance Environmental Science Social Sciences
Aim of the Journal: The aims of this journal are to provide a place for graduate students, academicians, researchers, and practitioners to interchange and publish the original research or review articles related to the domain of environmental and development studies. Scope of the Journal: 1. Environmental Earth & Science - Environmental Technology - Environmental Health - Environmental Risk Assessment - Biodiversity - Environmental Chemistry - Environmental Engineering, Sustainability, & Green Technology - Pollution - Water & Hydrology 2. Regional Planning & Development - Urbanisation & Development - Sustainable Tourism - Community Based Tourism - Cultural Heritage & Conservation - Conservation Planning - Disaster Management Development 3. Socio Cultural Development - Socio Economic Development - Cultural Development - Policy, Socioeconomic, and Law
Arjuna Subject : Ilmu Lingkungan (semua ketegori) - Ilmu Lingkungan (Lain-Lain)
Articles 66 Documents
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Triple Helix Collaboration in PT. INALUM’s Corporate Social Responsibility Program for Empowering Coastal Women in Kuala Indah Village Dara Aisyah; Muhammad Sontang; M. Deny Effendy Tambusay
Journal of Environmental and Development Studies Vol. 7 No. 1 (2026): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jeds.v7i1.20651

Abstract

This study examines the implementation of Triple Helix collaboration within PT. INALUM’s Corporate Social Responsibility (CSR) program in empowering coastal women engaged in clam shell peeling activities in Kuala Indah Village through the utilization of clam shell waste. The research explores how collaboration among government, industry, and academia can create an innovative and sustainable empowerment ecosystem for coastal communities. The study employs a mixed-methods approach using a case study design integrated with Participatory Action Research (PAR). Quantitative data were collected through surveys involving 100 purposively selected respondents, while qualitative data were obtained from in-depth interviews, field observations, and document analysis. The research process included needs assessment, training on processing clam shell waste into calcium oxide-based products, participatory evaluation, and community mentoring. The findings indicate that the socio-economic conditions of coastal women remain relatively low, characterized by limited educational attainment, unstable daily income averaging IDR 50,000 from middlemen (tauke), and restricted access to empowerment programs. The study further reveals that Triple Helix collaboration contributes to emerging socio-economic transformation through product innovation based on coastal waste processing and strengthened community capacity. The collaboration also facilitated the emergence of five women as local innovation drivers within the community. To ensure long-term sustainability, stronger institutional support from Triple Helix actors, particularly local government, is required so that empowerment initiatives do not remain dependent on external intervention.
Urbanization in Transition: Building A Future-Ready Framework for Malaysia’s Sustainable Tiered City System Yong Chee Kong; Noraini Omar Chong; Egna Francis Gitom; Theo Fidelis Tarigan
Journal of Environmental and Development Studies Vol. 7 No. 1 (2026): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jeds.v7i1.25604

Abstract

Malaysia’s urban transformation has entered a critical transitional phase characterized by rapid metropolitan expansion, uneven regional development, and evolving governance challenges. Although the national urbanization rate reached 75.8% in 2024, urban growth remains heavily concentrated within major conurbations, widening disparities between metropolitan centers and secondary cities. This study critically examines Malaysia’s tiered city system as a strategic framework for achieving more balanced, resilient, and sustainable urban development. The research adopts a mixed-method approach integrating spatial analysis, policy review, and expert-based validation. Spatial and demographic data from the Department of Statistics Malaysia (DOSM) and PLANMalaysia’s BMGN database were analyzed alongside key national planning policies, including the Fourth National Physical Plan (RFN4) and the Second National Urbanization Policy (DPN2). The study also incorporates comparative insights from international urban governance models and systems-based urban planning perspectives. The findings reveal persistent structural asymmetries within Malaysia’s urban hierarchy, reflected in fragmented governance, uneven spatial intensity, limited functional specialization, and weak integration between urban tiers. In response, the study proposes the Future-Ready Tiered City Framework (FRTCF), which integrates functional hierarchy, spatial intensity optimization, governance synchronization, digital intelligence systems, and resilience-oriented planning principles. This paper introduces a future-ready, adaptive framework that bridges hierarchical planning and network-based urban governance in the Global South, supporting more inclusive, data-driven, and sustainable urban transformation.
Green Architecture Strategies for Revitalizing Hybrid Traditional and Second-Hand Markets: The Case of Pasar Melati Medan Lanny Kamila Iswiditya; Isnen Fitri
Journal of Environmental and Development Studies Vol. 7 No. 1 (2026): Journal of Environmental and Development Studies
Publisher : TALENTA Publisher, Universitas Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pasar Melati, located in Medan City, functions as a hybrid traditional and second-hand market that plays a significant role in local economic and social activities. However, the market faces several critical issues, including poor spatial organization and circulation, inadequate waste management, limited natural ventilation, insufficient lighting, and a lack of green open spaces, all of which negatively affect user comfort and environmental quality. This study aims to propose a sustainable revitalization design for Pasar Melati by applying green architecture principles. A mixed-method approach was employed, combining field observations, spatial analysis, and semi-structured interviews with architects and market users to identify key problems and user needs. The findings indicate that the market requires improvements in spatial zoning, circulation systems, environmental comfort, and infrastructure management. The proposed design integrates green architecture strategies, including passive cooling through cross ventilation, natural lighting optimization, rainwater harvesting, waste segregation and composting, and improved spatial zoning to support both traditional and second-hand market activities. This study contributes to a green architecture-based design framework for hybrid markets, highlighting their role in sustainable urban development. Keywords: Circular Economy; Green Architecture; Hybrid Market; Market Revitalization; Passive Design
Performance Analysis of an Air-Based PV/T System in a Greenhouse Based on Indoor and Outdoor Test Chamber Temperature Comparison Fiky Setiawan; Ayu Zahra Chandrasari; Tinton Dwi Atmaja; Ahmad Rajani
Journal of Environmental and Development Studies Vol. 7 No. 2 (2026): Journal of Environmental and Development Studies (In Press)
Publisher : TALENTA Publisher, Universitas Sumatera Utara

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Abstract

This study analyzes the thermal behavior of an air-based photovoltaic thermal (PV/T) system integrated with a greenhouse under tropical outdoor conditions in Bandung, Indonesia. The integration extracts excess heat from photovoltaic panels, which typically degrades electrical performance and utilizes it to modify the agricultural microclimate. The experimental setup comprised a PV/T air collector, inlet fans, a connecting outlet duct, type-K thermocouples, DHT sensors, a pyranometer, an anemometer, and a data logger. Measurements were processed at 10-minute intervals from 09:00 to 15:00 across three observation days. The analysis emphasized solar radiation, PV/T component temperatures, mass flow rate, useful heat extraction, system thermal efficiency, and the comparison between the internal greenhouse temperature (DHT5-DHT7) and the external outdoor temperature (DHT8). The empirical results demonstrated an average solar radiation ranging from 676.84 W/m² to 768.65 W/m² across the observation days. The average outlet-inlet air temperature difference ranged consistently from 5.81°C to 6.36°C. Using the measured outlet velocity and duct area, the calculated air mass flow rate was 0.0774 kg/s. Consequently, the system generated an average useful thermal output of 467.85 W and achieved an average thermal efficiency of 25.24%. This effective heat transfer resulted in the internal greenhouse temperature remaining significantly higher than the outdoor ambient temperature by an average margin of 4.05°C to 4.73°C. These findings conclusively indicate that the active PV/T hot air flow, combined with the greenhouse enclosure effect, substantially governed the thermal conditions inside the test chamber, providing a viable thermal management strategy.
Thermal Performance Analysis of an Air-Based Hybrid PV/T Solar Collector in a Greenhouse under Varying Mass Flow Rates Jimmy Richardo Ginting; Ayu Zahra Chandrasari; Ahmad Rajani
Journal of Environmental and Development Studies Vol. 7 No. 2 (2026): Journal of Environmental and Development Studies (In Press)
Publisher : TALENTA Publisher, Universitas Sumatera Utara

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Abstract

Solar photovoltaic panels often experience electrical efficiency degradation due to heat accumulation, which can be effectively mitigated using hybrid photovoltaic/thermal (PV/T) systems. While a PV/T system concurrently generates electrical and thermal energy, the scope of this specific study is exclusively limited to evaluating its thermal performance and heat distribution. This study analyzes the thermal performance of an air-based hybrid PV/T solar collector integrated with a greenhouse. Because the system does not utilize phase change materials, the primary variable evaluated is the air mass flow rate, which is controlled by adjusting the number of active fans in both the PV/T collector and the greenhouse exhaust. Experimental data were collected over three days between 09:00 and 15:00 WIB. The testing was simplified into three operational scenarios: maximum PV/T - maximum greenhouse, maximum PV/T - minimum greenhouse, and minimum PV/T - minimum greenhouse. The numerical air velocities recorded were 3.70 m/s for the maximum PV/T setup and 2.35 m/s for the minimum. Concurrently, greenhouse exhaust velocities were 3.18 m/s (10 fans) and 2.03 m/s (6 fans). Findings revealed that the highest average useful heat reached 368.28 W during the maximum PV/T-minimum greenhouse scenario, highlighting optimal heat accumulation. Conversely, the highest average thermal efficiency was achieved in the maximum PV/T-maximum greenhouse scenario at 25.30%, demonstrating better air circulation and thermal stability. Ultimately, the results indicate that PV/T air velocity strongly governs heat extraction from the panels, whereas greenhouse exhaust velocity dictates heat retention inside the chamber.
Experimental Study on the Effect of Zigzag Configuration of Paraffin Wax-Filled Aluminum Containers on the Thermal Performance of a Photovoltaic Thermal System Sugito Julio Putra; Ayu Zahra Chandrasari; Ahmad Rajani
Journal of Environmental and Development Studies Vol. 7 No. 2 (2026): Journal of Environmental and Development Studies (In Press)
Publisher : TALENTA Publisher, Universitas Sumatera Utara

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Abstract

The performance of photovoltaic (PV) panels decreases significantly as operating temperatures rise. To mitigate this, forced-air cooling is often employed, but fluctuating outdoor solar radiation makes the integration of phase change materials (PCM) essential for effective heat regulation. This study experimentally evaluates the thermal performance of an air-based photovoltaic thermal (PV/T) system integrated with a zigzag arrangement of aluminum containers filled with paraffin wax PCM. The zigzag geometry was specifically designed to extend the contact path for forced convective heat transfer. Three PCM mass variations (150 g, 200 g, and 250 g) were tested outdoors in an urban environment from 09:00 to 15:00 WIB. The system's thermal response was monitored using K-type thermocouples, DHT22 sensors, and a solar power meter to record radiation intensity, component temperatures, and inlet-outlet air temperature differences (ΔT). Experimental results showed average solar irradiance values of 817.16, 643.76, and 606.05 W/m² for the 150 g, 200 g, and 250 g tests, respectively. The PV backsheet recorded the highest average temperatures across all setups, reaching up to 57.88°C. Notably, the 200 g PCM configuration demonstrated the optimal thermal response, achieving the highest peak PCM ΔT of 10.98°C at 13:00. Furthermore, the system yielded average positive air ΔT values of 6.37°C, 5.00°C, and 4.83°C for the respective masses. These findings confirm that forced air flow effectively removes heat from the zigzag PCM section, highlighting that selecting an appropriate PCM mass is critical for balancing heat absorption and continuous convective removal under dynamic field conditions.

Page 7 of 7 | Total Record : 66

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