The condenser loop uses a cooling tower to supply cooling water to the water-cooled electric chiller in the chilled water loop.
Required Objects
The condenser loop must have the following property.
- It must have at least 1 demand object, such as a chiller or water source heat pump (WSHP), attached to the loop.
Design Assumptions
- A condenser loop can operate in two modes, as follows.
Cooling-only condenser loop
- The condenser operates in this mode when it only has cooling-only piece of equipment connected to it.
- The cooling-only condenser loop has the following default temperature assumptions.
Property Value Notes Design supply temperature 29.44°C Design range 5.56°C Operational control type Outdoor wet bulb reset Operational approach temperature 3.89°C
Condenser loop with cooling and supplemental heat
- The condenser operates in this mode when the condenser loop contains a variable refrigerant flow (VRF) condenser or a WHSP.
Configuration
There are 2 configurations for each of the two following condenser loop operations.
Cooling Only
- Pump
- Cooling Tower
condenser loop with cooling and supplemental heating
- Pump
- Boiler
- Fluid Cooler
Pump
The pump has the following assumptions.
| Property | Value | Notes |
|---|---|---|
| Pressure rise | 148556.625 Pa | |
| Flow type | Constant speed | |
| Flow control | Intermittent | Only runs when there is demand. |
Cooling Tower
The pump has the following assumptions.
| Property | Value | Notes |
|---|---|---|
| Fan type | Variable speed | |
| Design approach | 3.8888889°C | |
| Design range temperature | 5.55555556°C |
Fluid Cooler
The pump has the following assumptions.
| Property | Value | Notes |
|---|---|---|
| Fan type | Constant speed |
Boiler
The pump has the following assumptions.
| Property | Value | Notes |
|---|---|---|
| Design supply temperature | 21.11°C | |
| Efficiency | 96% | |
| Flow mode | Constant |