Upcoming natural refrigerant-driven heating and cooling systems in India

DOI: 10.18462/iir.compr.2024.0657

Sekcia: Compressors and refrigerants

Stav prijatia: Abstrakt prijatý

Meno Organizácia  
Sarun Kumar Kochunni, PhD Norwegian University of Science and Technology
Simarpreet Singh, PhD EcoRef Tech
Vinod Laguri Vinod Laguri, M.Tech Indian Institute of Science, Bangalore
Arun BS, PhD ICAR-Central Institute of Fisheries Technology, Kochi
Sumit Kumar, M.Tech Indian Institute of Technology Kharagpur
Prosenjit Singha, M.Tech Birla Institute of Technology and Science, Pilani
Chayan Das, PhD Birla Institute of Technology and Science, Pilani
Lukas Köster, Master’s SINTEF Ocean AS
Marco Bless, Master’s SINTEF Energy Research
Armin Hafner, PhD Norwegian University of Science and Technology


India's heating, ventilation, air conditioning, and refrigeration (HVAC&R) industry still mainly employs synthetic refrigerants, exacerbating global warming. Promoting natural refrigerants may facilitate the transition to clean, sustainable heating and cooling options. However, in addition to the technical difficulties brought on by high ambient temperatures, non-technological impediments such as lack of expertise with the technology, general hesitance to new technology, and a shortage of appropriately experienced experts and installers hamper the adoption of the latest technologies. The Future Refrigeration India: INDEE+ project aims to increase confidence in the HVAC&R sector by implementing and demonstrating some natural refrigerant-driven heating and cooling systems. Ejector-supported R744 systems are proposed for a hotel (480 kW cooling load) and a hot water supply unit (140 kW heating load) for a large school kitchen. These systems are designed to meet both the heating and cooling loads simultaneously. The third investigation focuses on operating a 350 kW CO2-NH3 cascade freezer in a fish processing factory. The fourth unit under development is an on-board refrigeration system that produces ice from saltwater using R290 (propane). This paper initially covers the modelling, simulation, and theoretical performance evaluation of the designed systems. Further validation of the models with data from the industrial areas is presented. The outcomes of this demonstration work in real industrial scenarios will serve as guidelines to assist the transition to more environmentally friendly heating and cooling systems in India.

Kľúčové slová

Natural refrigerants
Transcritical CO2 cycle
CO2-NH3 cascade refrigeration