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Men
u
SPRAY Pos:
XXXXX
Description
Input Defa
ult
Di
m.
3-3
HD EIN Verd High-pressure threshold for blocking spray operation (when exceeded)
Note:
only effective during
night operation.
70...1
00
98
bar
5.17 COP monitoring
COP -
Coefficient
of Performance
- is a factor without units and is used to assess the energy efficiency of a
refrigeration pack system. The greater the COP value, the more efficient the refrigeration system. In the E*LDS
system, the COP value is calculated by the pack controller and can be monitored in the LDSWin program. In
order to calculate the COP value, three enthalpies from the log-ph diagram are evaluated in the pack controller.
The enthalpy tables are stored in the pack controller.
Using the three enthalpies h1, h2 and h3, the COP value of the pack controller is calculated. The calculation of
the Carnot COP value is calculated on the basis of the COP values from the last 2 minutes.
Requirements
The following sensors must be present on the refrigeration pack system for the calculation of the COP:
•
The LP and HP pressure transmitters
•
The suction gas temperature sensors of the refrigeration points for the measurement of the enthalpy h1
1. When HR mode is active, the function is not performed or is immediately aborted.
2. The function of the spray mode is disabled for 15 minutes after the HR mode.
3. In the event of measuring loop errors of the gas cooler temperature, the function is not
performed or is immediately aborted.
4. The function is started if all available fan stages are in operation (for speed control types, the
current speed must also be greater than or equal to 98%).
5. Function is only started in daytime operation.
Exception: The activation is performed in night operation if the parameter
Nachtbetrieb
is set to
YES
or
the high-pressure exceeds the threshold value
HD AUS Verd.
.
6. Spray stages S1 and S2 are each controlled at the last compressor relay stage of the SIOX
extension module.
Note: This means that 2 compressors less are available!
7. If the spray stage 1 is activated, no fan stages will be unloaded!
The actual values of the COP calculation are shown in menu 2-6.
Summary of Contents for VS 3015 C
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