Enter the vented steam mass flow and the feed water mass flow into the calculator to determine the deaerator vent rate.
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Deaerator Vent Rate Formula
The following formula is used to calculate a deaerator vent rate.
DVR = VSMF / FWMF * 100
- Where DVR is the deaerator vent rate (%)
- VSMF is the vented steam mass flow rate (kg/s)
- FWMF is the feedwater mass flow rate (kg/s)
To calculate Deaerator Vent Rate, divide the vented steam mass flow rate by the feedwater mass flow rate, then multiply by 100.
What is a deaerator vent rate?
Definition:
A Deaerator Vent Rate is a measure of the percentage of mass that is converted to steam by a deaerator with respect to the inlet feedwater mass flow.
How to calculate Deaerator Vent Rate?
Example Problem:
The following example outlines how to calculate a Deaerator Vent Rate.
First, determine the feedwater mass flow rate. In this example, the feedwater is moving at a rate of 150 kg/s.
Next, determine the vented steam mass flow rate. In this case, the vented steam is moving at 50 kg/s.
Finally, calculate the Deaerator Vent Rate using the formula above:
DVR = VSMF / FWMF * 100
DVR = 50/150 * 100
DVR = 33.333%