Blended Temperature

To properly size a steam temperature regulator, it is important to determine the proper load, expressed in lbs/hr. The temperature rise needed is one of three key factors along with the flow rate (GPM) and steam pressure (psig) at the regulator that determines the correct regulator.

This calculator figures the "blended temperatures" for applications with a combination of makeup and system returns. In some applications, there may be more than one return pipe and the returns may be at different temperatures (see step 3 of calculator).

A user must enter the following inputs:

• Percentage of load and temperature of makeup water.
• Percentage of load and temperature of returns.

Blended Temperature Calculator
1. Enter percentage of load (default: 50%) and corresponding temperature of makeup. a) % °F	Blended Temperature °F
2. Enter percentage of load (default: 50%) and corresponding temperature of return. b) % °F
(optional step) Typically, applications are a combination of makeup with only one return. However, on occasion multiple returns may exist at different temperatures. You may enter percentages of any additional loads and corresponding temperatures of any additional returns. c) % °F d) % °F e) % °F
Total Percentage of Load (must be 100% to be valid) % Total percent not equal to 100%. Adjust each of your percentages so this total is 100%.
Press "Reset All" to CLEAR ALL calculations and enter new values.

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