Now available: IIR-Gustav Lorentzen Conference Papers 2022

Download one or all of the 170 technical papers from the 15th IIR-Gustav Lorentzen Conference on Natural Refrigerants!

Hosted by the Norwegian University of Science and Technology (NTNU) and SINTEF in Trondheim (Norway) on June 13-15, 2022, the 15th Gustav Lorentzen Conference on Natural Refrigerants welcomed over 330 participants on site to share 17 plenary lectures, 25 posters and 132 oral presentations.


A conference in honour of the Professor himself


Despite being organised in the wake of a two-year pandemic, delegates were delighted to reunite with colleagues from far and wide.

Organised under the theme “The Natural Choices by 2030”, the 3-day conference fostered dynamic discussions on the latest research results and advances related to the use of natural refrigerants in different types of systems and applications.


This conference series is held by the IIR as a tribute to the work and legacy of Professor Gustav Lorentzen.

A prominent figure in the field, Professor Lorentzen held various responsibilities within the IIR. His work boosted research on CO2 as a refrigerant in order to replace chlorinated refrigerants (CFCs, HCFCs), setting the framework for international agreements such as the Montreal Protocol (1987).


Download the 170 technical papers


The conference proceedings, comprised of 170 papers, cover themes including natural working fluids, sustainability and alternative cycles, commercial and supermarket refrigeration, innovative CO2, R290 (propane) and R717 (ammonia) systems, energy efficiency and energy savings, and safety and risk.


Download the conference proceedings


Download the individual papers



Video recordings of three conference sessions are also available:

  1. Sustainable Refrigeration - What is sustainability and how to determine? (H. König) [download]
  2. Net zero, renewables, and natural refrigerants (L. J. M. Kuijpers) [download]
  3. Applying CO2 refrigeration to the cooling and heating of building worldwide to achieve reductions in energy and cooling water consumption, and emissions (K. Visser) [download]


Save the date for GL 2024
16th IIR-Gustav Lorentzen Conference on Natural Refrigerants
College Park, United States | August 2024