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Chiller Technical Manual 9635376 V1.3.0_06_2019
Chillers
TurboChill™ R513A Air Cooled and FreeCool
Design Features & Information
Operating Limits
Standard Unit
Minimum ambient air DB
-20°C*
Maximum ambient air DB at full load operation
35°C
Max ambient air DB (subject to chiller model selected)
40°C
Minimum supply water temperature
5°C
Maximum return water temperature
26°C**
Maximum supply water temperature
18°C
Minimum / maximum ΔT
4K / 8K
* Appropriate Glycol may be required, refer to the freeze protection policy.
** With an 8K ∆T
ESEER Calculations
The quoted EER figures cover the performance of the unit ONLY at the standard rating conditions of 7/12°C water,
35°C ambient. The ESEER (European Seasonal Energy Efficiency Ratio) calculation method has been developed by
Eurovent to give a single value that is a realistic indication of the efficiency of the chiller across the year round range of
operation. The ESEER value is calculated from the unit’s performance at 20, 25, 30 and 35°C ambient temperatures for
25, 50, 75 and 100% loading stages respectively, and with a fixed 7°C supply temperature.
The calculation below uses the Eurovent weighting coefficients and the part load EERs are determined in accordance
with EN14825:2018 Clause 4.4.
ESEER = A●EER
100%
+ B●EER
75%
+ C●EER
50%
+ D●EER
25%
A, B, C and D are weighting factors 0.03, 0.33, 0.41 and 0.23.
A
B
C
D
Temperature
35°C
30°C
25°C
20°C
Capacity Requirement
100%
73.7%
47.4%
21.1%
Weighting (Eurovent)
0.03
0.33
0.41
0.23
