Four KTH Projects – Risks and Opportunities of Refrigerants in Heat Pumps
What happens when flammable refrigerants leak in residential buildings? Why can the wrong refrigerant shorten the lifespan of heat pumps? How can internal superheating be reduced in heat pump systems? What opportunities exist for managing refrigerants at the end of their service life? Welcome to a webinar focusing on refrigerant research at KTH.
Organisers: The Swedish Energy Agency and Energiforsk
Location: Online via Teams, in English
Date and time: Tuesday, 17 March, 08:30–10:00
The link to the webinar will be sent in the confirmation email immediately after you sign up.
Agenda
During this webinar, four researchers from KTH will present their projects, all centered on refrigerants.
Saman Nimali Gunasekara: Tank-to-Grave Management of low-GWP refrigerants
Current practices and opportunities in end-of life management of low GWP refrigerants. Gas chromatography-based compositional analyses of low-GWP refrigerants from real installations: insights and discussion. Decomposition possibilities of some synthetic refrigerants.
Read more about the project (termoinnovation.se)
Monika Ignatowicz: Refrigerants Can Shorten the Lifespan of Heat Pumps
The choice of lubricant plays a crucial role in determining how durable and efficient future high‑temperature heat pumps will be. Tests show that at elevated temperatures, chemical reactions can cause both the refrigerant and the lubricant in the heat pump to degrade, potentially shortening the system’s service life.
Read more about the project (termoinnovation.se)
Jafar Esmaeelian: What Happens When Flammable Refrigerants Leak?
A presentation that covers numerical studies of accidental leakage of flammable refrigerants in residential air-conditioning systems. It shows how leakage scenarios and system parameters affect dispersion behavior and ignition risk. The findings contribute to safer system design and more informed safety guidelines.
Read more about the project (termoinnovation.se)
Samer Sawalha: How Overfeeding Methods Can Reduce Internal Superheat and Improve Efficiency
Highly efficient heat pumps and refrigeration systems are key to meeting future energy goals. Superheat in evaporators helps ensure stable operation and reliable compressors, but it reduces system efficiency. This project explores different overfeeding methods to reduce internal superheat and improve overall efficiency.
Read more about the project (termoinnovation.se)
