Driving Change with Geothermal Science and Solutions
I am a Geothermal Energy Specialist and Associate Professor at the Mechanical Engineering Education Study Program, Universitas Sebelas Maret (UNS), Indonesia. My expertise focuses on renewable energy systems—particularly geothermal energy, exergy analysis, and thermal power optimization. I actively publish in international journals, serve as a reviewer and editor, and frequently contribute to academic forums and digital platforms. I am also regularly consulted by industry stakeholders on geothermal energy development, reflecting my commitment to bridging research and practical application in sustainable energy.
Closed-Loop Geothermal ORC Systems
This research focuses on Closed-Loop Geothermal Organic Rankine Cycle (ORC) systems, which generate electricity using low- to medium-temperature geothermal heat without extracting fluids from the ground.
The system uses sealed pipes filled with a working fluid that absorbs heat from the earth and converts it into electricity through the ORC process. A key advantage of the closed-loop design is its environmental friendliness—it prevents contamination of underground water sources and is suitable for remote areas.
The study emphasizes thermal efficiency, optimal working fluid selection, modular system design, and the use of residual heat for direct applications such as water heating or agricultural drying..
“I highly recommend Dr. Nugroho Agung Pambudi, my former doctoral student at Kyushu University. He demonstrated exceptional dedication in geothermal research, particularly in exergy analysis, silica control, and simulations using EES. His work has been published internationally and has made a significant contribution to the field of renewable energy.”
Prof. Ryuchi Itoi
Professor at Kyushu University
“I have had the opportunity to collaborate with Dr. Nugroho Agung Pambudi on several research efforts related to Japan’s energy landscape, including geothermal systems and nuclear power plant analysis. His analytical skills, especially in energy modeling and exergy-based evaluations, are exceptional. Dr. Pambudi brings clarity, precision, and dedication to every project..”
Dr. Jane Colinn
Professor at Central University, USA
I am very proud to Dr. Pambudi as an inspiring figure. He facilitates collaborative research, expert exchange, and various other university activities. As an alumnus of the Faculty of Engineering at UNNES, He is often invited to motivate students, share strategies to obtain scholarships, and talk about education abroad. Dr. Pambudi is also known as the founder of the startup Halalmind in Japan—an innovation that greatly helps Muslims find halal food products. As one of the most outstanding academic lecturers at Universitas Sebelas Maret (UNS), I hope he will continue to innovate and contribute His best to Indonesia — a country rich in natural resources that deserves to be developed through advanced science and technology, especially in geothermal energy, His area of expertize”
Prof. Dr. Wirawan Sumbodo
Dean of the Faculty of Engineering, State University of Semarang (UNNES)
“Collaborating with Dr. Nugroho Agung Pambudi has been one of the most enriching academic experiences in my career. His approach to research goes beyond technical excellence—he brings a strong sense of purpose, ethics, and a genuine commitment to solving real-world energy challenges. Whether leading a geothermal field study or mentoring students, Dr. Pambudi’s presence is always thoughtful, grounded, and forward-looking. He exemplifies the ideal blend of scientist, educator, and innovator.”
Assoc. Prof. Caroline Linn
Senior Research Fellow, National Institute of Advanced Industrial Science and Technology (AIST), Japan