Expert in geothermal, solar thermal, wind, and biomass energy — Universitas Sebelas Maret (UNS), Indonesia
Turning the earth's heat, the sun, the wind, and biomass into reliable power and clean fuel — through rigorous thermodynamics, exergy, and techno-economic modeling.
I work across renewable energy conversion — turning the heat beneath our feet, the sun, the wind, and biomass into reliable power and clean fuel.
My focus is the engineering between a resource and a working plant — how a geothermal reservoir, a solar thermal field, or a stream of agricultural waste actually becomes electricity, process heat, or solid fuel. Much of this work uses the Organic Rankine Cycle to recover low- and medium-temperature heat that would otherwise be lost, paired with exergy (second-law) analysis to pinpoint exactly where useful energy is being destroyed.
On the biomass side, I study thermochemical routes — hydrothermal carbonization, gasification, and refuse-derived fuels — that upgrade waste into energy-dense fuel and syngas. Every system is grounded in detailed simulation with Python, EES, and CoolProp, then tested against techno-economic reality through LCOE and multi-objective optimization.
I earned my doctorate at Kyushu University, Japan, publish in leading Elsevier journals such as Renewable & Sustainable Energy Reviews and Renewable Energy, and serve as a reviewer and editor. I also advise industry and government on geothermal and bioenergy development — keeping the modeling honest by holding it to what can actually be built, financed, and operated.
From the wellhead to the working fluid — the systems I design, model, and optimize for converting renewable heat and flow into power.
Closed-loop and conventional geothermal systems — binary and flash configurations, coaxial wellbore modeling, and ORC design with optimal working-fluid selection.
Solar water heating and thermal collectors, including hybrid geothermal–solar configurations that deliver both heat and power.
Hydrothermal carbonization, gasification, and refuse-derived fuels that turn biomass and waste into solid fuel and syngas.
Wind energy capture and experimental, Python-based computational analysis of airflow-driven generation.
Recovering waste brine and residual heat for combined power, freshwater (geothermal desalination), and direct-use applications.
Second-law evaluation and multi-objective optimization (LCOE, NSGA-II, Pareto) that underpin every system I design.
Simulation and optimization studies spanning closed-loop geothermal, biomass conversion, and plant-level economics.
Sealed wellbore systems generating electricity from medium-temperature heat without producing reservoir fluids — emphasizing thermal efficiency, working-fluid choice, and modular design.
A Python model of a closed-loop coaxial geothermal well, capturing transient heat extraction for the Mataloko field.
NSGA-II optimization of geothermal power plants with Pareto-front analysis to balance output, efficiency, and cost.
LCOE, CAPEX/OPEX, and sensitivity analysis for triple-flash geothermal configurations.
Optimizing hydrothermal processing of biomass waste into higher-grade, energy-dense solid fuel.
Python simulation of geothermal wells at Gunung Lawu, supporting resource and performance assessment.
A sample of recent technical articles. The complete, up-to-date list lives on Google Scholar.
Simulation and optimization code, openly available — built so the analysis can be checked, not just cited.
Coaxial wellbore closed-loop geothermal model for the Mataloko field, with transient heat extraction.
Multi-objective optimization of geothermal power plants using NSGA-II, with Pareto-front trade-offs.
Techno-economic analysis — LCOE, CAPEX/OPEX and sensitivity for triple-flash configurations.
Geothermal well simulation for Gunung Lawu, supporting resource and performance assessment.
Outside research, I help run the drPambudi Indonesia Foundation (Yayasan Derma Indonesia) — a non-profit, entirely family-funded initiative for social outreach and education, run without external fundraising as a sincere act of service rather than for recognition.
Basic food packages distributed every month in Jatibarang Kidul and Jatibarang Lor (Brebes) and Sukoharjo, reaching Kebumen and Boyolali as needs arise — funded entirely by the family to keep it sincere and sustainable.
Scholarships for santri at Islamic boarding schools (pesantren) in Sukoharjo and East Java — small, consistent steps toward more equal access to education for high-achieving children from low-income families.
For research partnerships, reviewing and editing, student supervision, or industry consultation on geothermal and thermal-energy systems — reach out.