Hi, This is Aykut. I have a question about ice rink design.

Our Ice Rink Technical specification ;

-size of the ice rink; 806m2
-ambient temperature above the ice surface;+24°С
- relative humidity above the ice surface;50%
- air velocity above the ice surface;0,2m/sec
- ice thickness;40mm
- required cooling capacity;≈280kW
Refrigerant;R-404A
Outdoor Temperature;+40°С

We have two offer and two different disegn;

First offer;

Semi hermetic screw compressors (2+1) 1pcs.
- type Bitzer or similar

- cooling capacity 291,0kW
- evaporating temperature -17°С
- condensing temperature +50°С
- power consumption 224,0kW

Pipe & tube heat exchanger 1pcs.
- type Alfa-Laval or similar

- capacity 460,0kW
- evaporating temperature -17°С
- glycol inlet temperature -9°С
- glycol outlet temperature -12°С
number of circuits 3pcs

Second offer;

Semi hermetic screw compressors (3+1) 1pcs.
- type Bitzer or similar
- cooling capacity 282,0kW
- evaporating temperature -22°С
- condensing temperature +50°С
- power consumption 200,0kW

Pipe & tube heat exchanger 1pcs.
- type Alfa-Laval or similar
- capacity 320,0kW
- evaporating temperature -22°С
- glycol inlet temperature -14°С
- glycol outlet temperature -17°С

Which glycol inlet&outlet temperature true? (-9°С /-12°С or -14°С /-17°С)