Product Overview

© Danfoss | DCS | 2019.04
Data sheet | Superheat controller type EKE 1A, EKE 1B, EKE 1C
DKRCC.PD.RS0.A4.02 | 45
17.0 Superheat reference
calculation methods
In superheat mode the controller will control the superheat to be stable and closer to the superheat
reference. This will give the optimal utilization of heat exchanger and there by maximum cooling
capacity. If superheat is too low, the ow in the expansion is decreased and superheat will be higher.
Superheat reference can be calculated based on following dierent methods:
• Fixed Superheat reference
• Loadap
• MSS
• Delta Temperature Reference
Danfoss 80G8225.01
17.1 Comparison between
SH reference
Danfoss 84B1488.10
100 %
Superheat
Q
o
Unstable region
(wet)
10 %
Pressure (P)
EKE
operating
envelope
Superheat
reference
Enthalpy (H)
Danfoss Danfoss Fixed 3
rd
Party Danfoss Machanical
MSS LoadAP SH SH control Delta temp. TXVs