Refrigerant side evaporator development

Workpackage 6: Refrigerant side evaporator development

Design a highly-efficient refrigerant-side of the evaporator by:

  1. Significantly enhancing the fluid distribution of two-phase flow at inlet from evaporator in terms of robustness for a broad mass flow range;
  2. Reducing the inner volume of aluminum micro- /minichannel heat exchangers;
  3. Adapting the MPE tube design to fin design / air side characteristics;
  4. Optimizing the thermal balance in-between the refrigerant and air side;
  5. Testing and validating the proof-of-concept of a circuit able to realize natural circulation defrosting in heat pumps.

Publications

 

 

Reichl, Ch. (2015); GreenHP: Next Generation Heat Pump for Retrofitting Buildings – new evaporator component for large capacity air-to-water heat pumps; REHVA Annual Meeting and the 9th Conference on Advanced HVAC and Natural Gas Technologies; Riga 2015

Strehlow, A. (2015) GreenHP: Heat Exchangers for Next Generation Heat Pump; 4th International Congress and Exhibition on Aluminium Heat Exchanger Technologies for HVAC&R; Düsseldorf 2015

Makhnatch, P. (2014) The role of environmental metrics (GWP, TEWI, LCCP) in the selection of low GWP refrigerant; The 6th International Conference on Applied Energy; Taipei 2014