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Access 4.x |
Heat exchanger efficiency |
The function calculates temperature efficiency of the heat exchanger.
There are two options for calculating the efficiency depending on the installed sensor:
Option 1 (using the Exhaust air temperature sensor):
Option 2 (using the Efficiency temperature sensor):
Minimal exchanger signal (default 5%) and minimal temperature increase (default 2oC) can be used as obligatory conditions for displaying efficiency.
Setup of the exchanger efficiency presentation |
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Variable |
Available options & Selection |
Note |
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Activate exchanger efficiency presentation |
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Configuration > Functions > Temperature control |
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Efficiency presentation |
| Yes | No | |
Activate function |
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Efficiency sensor |
| Efficiency temperature exchanger | Exhaust air temperature | |
Select option for efficiency calculation |
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Min output exchanger to show efficiency |
[5] % |
Efficiency is only displayed if the control signal for the exchanger sequence is higher than 5% |
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Min delta-T to show efficiency |
[2] oC |
Difference between Extract - Exhaust (option 1) or exchanger Intake - Efficiency (option 2) temperature to display efficiency |
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Configure inputs |
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Configuration > I/O allocation settings > Analog inputs > |
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Efficiency temperature exchanger |
Any available I/O |
- |
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View actual efficiency |
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Data & Settings > Operation overview > Exchanger |
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Exchanger (SEQ-B) |
0..100 % |
Indication of exchanger sequence output |
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Efficiency exchanger |
--- %ƞ |
Indication of exchanger efficiency |
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Graphical representation |
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Flowchart |
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18.0 oC - indication of Efficiency temperature 6% - indication of exchanger sequence output 60% - indication of exchanger efficiency |
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