Greetings everyone,

I'm not in the refrigeration engineering branch (yet) and I come from a Physics background. Lately I've been working on a project of cold storage (ice bank) in which I'm trying to project a low (specific) cost ice bank, in a prototype stage. Since I'm completely new to this I could use some help and this forum seemed perfect for it.

Here are some details of the project:
  • 80cm*80cm*80cm insulated tank;
  • HDPE coil as an heat exchanger;
  • approximately 15kWh of storage;
  • internal melt system with water glycol (20% weight slycol concentration) solution as refrigerant;
  • water glycol start temperature around -6 degC;
  • DN20 coils (around 26.67mm OD) with around 1.9mm wall thickness;
  • 1.6m/s average velocity of water-glycol flowing in the tubes.


The type of heat exchanger may be found here attached.
ice_pipe_2geom_3D.png

The part I'm in need of help is to project the type of chiller I need to chill down the return glycol solution and its pump. I don't know exactly the type of chiller I need and the required parameters I need to get to project that chiller and pump.

If someone could help I'd be glad. Hope I was clear.

Best regards,
António Rocha