Applying Split Coil to Condensers

Split coil allows users to select a refrigerant condenser and then evaluate the capacity of that condenser with a glycol split circuit included.

Use this tool to quickly and accurately size split coil condensers that use a compressor head cooling loop, or for other glycol cooling requirements.

Applying Split Coil from Design Criteria

If the glycol circuit criteria is known, it can be entered as part of the initial search. This way, all units in the Results grid will display a thermal capacity with the glycol split already factored in and applied.

To include the glycol circuit in the initial criteria search:

1. Navigate to Condenser Criteria search.
2. Select the desired product line(s).
3. Enter the required condensing capacity and condensing temperature.
4. Select Add Split Coil.

The split coil criteria fields appear.

5. Enter the glycol circuit criteria, and click Search.

The Results grid will only display condensers that can meet your required condensing capacity with the specified glycol split.

Applying Split Coil From Accessories

If a unit has already been selected and added to a project, or if the split coil criteria are not known, a glycol circuit may be applied by using the Split Coil wizard found on the Accessories screen.

Selecting an ideal unit

As required condenser capacity cannot be modified after initial selection, it is important that the condenser selected be above capacity prior to applying a glycol cooling split.

The glycol split could have a large impact on the overall capacity of the unit. Knowing the size of the glycol split as a percentage of the refrigerant capacity would give a good indication to the best unit to select initially.

The selection criteria used for this example are:

• Product line - ATC-E
• Refrigerant - ammonia
• Condensing temperature - 95°F
• Wet bulb - 78°F
• Total heat of rejection - 2,000MBH

We did not factor the glycol capacity requirement into our initial criteria, and selected the ACT-221E as it has adequate additional capacity for our glycol cooling needs.

Using the Split Coil wizard

To apply split coil to an already selected condenser:

1. Navigate to Accessorize.
2. Click Split Coilfrom the toolbar.

The Split Coil wizard opens.



The refrigerant conditions display on the left side, and the glycol split coil conditions on the right.

3. Under the glycol conditions on the right side, enter the required glycol conditions.

The Fluid Outlet temperature must equal the Condensing Temperature, due to the proximity of the fluids in the same coil and the thermal effect of the condensing temperature on the spray water temperature.

4. Once the glycol conditions are entered, click Calculate.



Upon completing the calculation, the window displays:

• Percentage of total available tubes that each circuit uses
• The pressure drop for each circuit
• Adjusted percentage capacity of each circuit based on the input conditions

Split coil cannot be approved and applied to a condenser if either circuit is below capacity (100%).

5. If necessary, click Edit Inputs to modify the criteria.
6. When satisfied with the provided solution, click Apply to save as an accessory applied to the unit.

The split information and adjusted condenser capacity will be shown on the accessories screen as well as the technical data sheet, quote, and order write-up.