About this presentation

related to ATMOsphere Europe 2011
published on 11 October 2011
24 pages
2 MB

Free cooling is a possible solution when the temperature for the cooling load is above the outdoor temperature. To increase efficiency on a yearly basis, the objective is to raise the temperature level at which free cooling can be applied in order to achieve more hours of free cooling operation. By supplementing the traditional glycol based free cooling system with a CO₂ based system, the benefits of phase transition and an increased heat transfer coefficient are utilized and the temperature limit is raised, lowering the annual energy consumption. To further reduce operating costs the heat is recovered from the server room and the canteen refrigeration system by the use of heat pumps. Calculations show a significant reduction in the energy consumption.

About the speaker(s)

Christian Heerup

 

Christian holds a B.Sc. in Mechanical Engineering supplemented by 30 years’ experience within refrigeration, including solutions for supermarkets, cold stores, heat recovery and air conditioning systems with focus on natural refrigerants CO₂ and hydrocarbons.

Christian has initiated several projects aiming at reducing climate impact and optimizing energy performance and he share his discoveries when delivering training courses in CO₂ refrigeration.