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Ammonia heat pump optimization at high temperature water ...


About this presentation

related to ATMOsphere Asia 2016
published on 10 February 2016
21 pages

Rolf Christensen highlighted the opportunity to increase efficiency for high-temperature ammonia heat pumps where a relatively large temperature rise on the water side exists. Testing results show that by using precise concepts, it is possible not only to lower the system’s condensing temperature, but also to reach outlet temperatures higher than the condensation temperature, while still recovering much more heat than is available solely from desuperheating.

About the speaker(s)

Rolf Christensen


Dr. Rolf Christensen holds a M.Sc. in Heat and Power Engineering and a PhD in Chemical Engineering from Lund Institute of Technology. He also holds an Executive Master in Technology Management from Chalmers University. His professional experience includes three years as an Engineer in the merchant marines and over five years as a Consultant for heat and power plant engineering & energy conservation. For six years, Dr. Christensen also held a position as an Associate Professor in heat and power plant engineering at the Lund Institute of Technology. 

Dr. Christensen has been with Alfa Laval since 1998 and has worked in various specialist and management positions, such as Manager for the heat & mass transfer department, testing laboratory, new concept development and concept portfolio management. He has also held a position as a Business Development Manager for refrigeration and Product Portfolio Manager for industrial refrigeration. He has been driving the development of plate heat exchangers for transcritical COas well as plate heat exchangers for ammonia heat pumps and evaporation.