“Innovative condensation/evaporation system with dielectric refrigerant fluid in closed cycle with industrial application” NOVEC IN852A PROJECT 2018/29

INTEGASA, GIPAT, ATI SISTEMAS and DOSMASDOS are four Galician SMEs that have joined forces with the aim of creating a project for the design, study, and validation of a closed evaporative condenser system as part of a refrigeration installation. This project evaluates the use of NovecTM as a refrigerant fluid with characteristics that make it harmless to humans and environmentally friendly.

The project culminated in the construction of an industrial-scale pilot plant. The evaporative cooling cycle with a high heat transfer coefficient made it possible to reduce the size of the heat exchanger. The thermosyphon circulation of the refrigerant has been also successfully achieved, eliminating the use of pumping systems with the consequent energy savings. The final installation has an automatic regulation based on temperature and pressure to achieve natural circulation of the fluid and stabilization of the system. The behaviour of the system has been fully analysed under various operating conditions and parameters. As partial results, the thermal behaviour of the cooling fluid was also characterised in detail, a key task for the correct dimensioning of the system.