REGEN works across six connected research themes, from laboratory experiments to industrial-scale systems and community projects.
| Theme | Lead | Recent projects |
|---|---|---|
| Energy System Optimization | Nasruddin | Thermoeconomic optimization of cascade refrigeration with CO2 and hydrocarbon mixtures (2026); multigeneration systems driven by geothermal heat (2025); exergy analysis of steam power plants using waste heat |
| Refrigeration, HVAC and Heat Pipes | Nasruddin, Arnas |
Industrial-scale wraparound loop heat pipes for HVAC (2026); dynamic analysis of single–double-effect absorption chillers (2023–now); load-based testing of air conditioners and heat pumps (2026) |
| Two-Phase Flow and Ice Slurry | Agus S. Pamitran | R290 two-phase flow pattern visualization in horizontal channels (2023–2024); boiling pressure drop in microchannels (2021–2022); ice slurry generator for a 28 GT fishing vessel (2020–2021) |
| Adsorption, Gas Storage and Thermal Storage | Nasruddin | Cobalt-glutamate bio-MOF for methane storage and CO2/CH4 adsorption (2026); biochar from oil palm empty fruit bunches for thermal energy storage, with IPB University, Universitas Sebelas Maret and Sunway University (2025–now) |
| Biomass and Waste-to-Energy | Adi Surjosatyo | Sago waste gasification in Papua (2022); hydrogen-rich syngas with Al2O3 catalyst (2025); tar-to-biocarbon (2026); hydrothermal carbonization of municipal waste (2020–2021) |
| Water and Sustainability | Arnas, Adi Surjosatyo |
Ozone treatment for water saving in cooling towers (2024–now); seawater desalination for Bekasi coastal communities (2023) |
