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All Journal Journal of Petroleum and Geothermal Technology
Dwi Miftha Kurnia
Unknown Affiliation
Earth & Planetary Sciences Energy Engineering

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A Design Analysis of Shell and Tube Type Recuperator in Organic Rankine Cycle Power Plant with Low-Temperature Geothermal Steam Source MUHAMMAD RIFQI DWI SEPTIAN; Fitri Rusmaladewi; Friska Hasugian; Rozi Afdi; Dwi Miftha Kurnia; Stevy Canny Louhenapessy; Randy Yusuf Kurniawan; Setiadi Wira Buana
Journal of Petroleum and Geothermal Technology Vol. 6 No. 1 (2025): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v6i1.15142

Abstract

Organic Rankine Cycle (ORC) power generation systems offer an effective means to harness low-grade geothermal heat. A crucial component in improving ORC thermal performance is the recuperator, which recovers residual heat from the turbine outlet to preheat the working fluid. This study focuses on the design and evaluation of a shell and tube recuperator using R-600a as the working fluid, through thermodynamic and heat transfer analyses. Key parameters such as LMTD (32.38 °F), effectiveness (0.434), and heat transfer area (60.35 m²) were calculated. Pressure drops were within acceptable limits (tube side: 4.46 psi; shell side: 0.475 psi), and the dirt factor of 0.0038 indicates good resistance to fouling. The results support the feasibility of implementing the proposed design in small to medium-scale geothermal ORC applications. Keywords: geothermal; ORC; recuperator; shell and tube; thermal analysis
Impact of Reservoir Horizontal Permeability Vertical Distribution on Recovery Efficiency Based on Deepwater Massive Sands Azman Munthoha Maula; Tsani Sabila; Putri Agustryani; Friska Hasugian; Dwi Miftha Kurnia; Randy Yusuf Kurniawan; Rozi Afdi
Journal of Petroleum and Geothermal Technology Vol. 7 No. 1 (2026): May
Publisher : Universitas Pembangunan Nasional "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jpgt.v7i1.16798

Abstract

The influence of Deep-Water Massive Sands (DWMS) internal architecture on hydrocarbon recovery remains an area of ambiguity. This research endeavor aimed to elucidate the bed-scale ramifications of the vertical distribution of horizontal permeability, as determined from documented DWMS outcrop sedimentological analyses, on hydrocarbon recovery and sweep efficiency. This was achieved through the application of numerical waterflood simulations. Model construction leveraged outcrop textural parameters, including grain size, sorting, and orientation, in conjunction with analogous turbidite petrophysical subsurface data. The observed outcomes from four simulated heterogeneous cases revealed distinct trends in recovery efficiency, with variations up to 10%. These trends were attributable to the efficiency of water sweep and the interactive effects of vertical permeability heterogeneity, gravitational forces, and viscous forces. Specifically, the most stable, piston-like water sweep efficiency was associated with coarsening-upward permeability trends, followed by intermediate sweep efficiencies in anomalous and ungraded DWMS trends, and finally, the most unstable sweep efficiency in idealized trends.
Co-Authors Azman Munthoha Maula Fitri Rusmaladewi Friska Hasugian MUHAMMAD RIFQI DWI SEPTIAN Putri Agustryani Randy Yusuf Kurniawan Rozi Afdi Setiadi Wira Buana Stevy Canny Louhenapessy Tsani Sabila