Page Comparison

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1. Setting the https://hysopt.atlassian.net/wiki/spaces/HRM/pages/3089204126capacity correctly, at the right reference return temperature

2. The electrical & thermal efficiency table

   1. If these are known, they should be filled in to accurately reflect the electrical and thermal power usage.

3. Pressure drop through KV-value

4. Capacitance (water content & metal mass)

   1. Keep in mind that the right capacitance is important in order to have a stable control (1l of capacitance compared to 100l of water capacitance requires a higher amount of capacity)

   2. If no water content is known, assuming 1l/kW is a good starting position

Make sure that the hydraulics are correct. Set both the pump and 3-way valve correct, and either add or substract subtract other hydraulic components.

Also set the buffer vessel with the correct capacity (example 200 kW if the CHP is 200 kW), correct delta T and the correct volume of the vessel. If there is information known of about the sensor placement, this can also be filled in.

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The programmable controller controls the CHP, by enabling and disabling, as well as calculated calculating the modulation of the CHP based on the measured return temperature.

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1. Timestep

   1. Standard value: 30 (in seconds)

   2. This is the standard timestep of the software and is needed to calculate the need for activation. If this standard is not changed in the model, this value should also be kept the same.

2. SetpointReturn

   1. Standard value: 70 (in °C)

   2. The setpoint return temperature for CHP, which the 3-way valve will be controlling towards

3. MaxReturn

   1. Standard value: 80 (in °C)

   2. The return temperature at which the CHP will disable

4. ReturnX1

   1. Standard value: 70 (in °C)

   2. The return temperature at which the CHP will run at maximum modulation (return temperature up to value X2 → In this case if the return temperature is between 70 and 75, the CHP will run at 100%)

5. ReturnX2

   1. Standard value: 75 (in °C)

   2. The return temperature at which the CHP will run at minimum modulation (return temperature up to value MaxReturn → In this case if the return temperature is between 75 and 80, the CHP will run at minimum modulation)

   3. The value is standard at 60% but can be changed by diving into the controller if needed

6. TimerValue

   1. Standard value: 600 (in seconds)

   2. This timer delays for 10 minutes after disabling the CHP, in order to not immediately restart the CHP and avoiding unhealthy CHP behavior

7. TimeReset

   1. Standard value: 86400 (in seconds)

   2. This value is needed for an implemented counter in the controller, that calculated the amount of starts in the day. The value of 8640 86400 allows the counter to reset every day.

   3. If different counters are needed, this value can be changed, but keep in mind to change the value in seconds

8. MaxStarts

   1. Standard value: 6

   2. The maximum amount of starts for each day

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