Fired Heater Learning Center

Steam Drum Volume Calculator

Steam Drum Volume Calculator

This calculator calculates the various water storage volumes and time between the levels for typical steam drums. The JacaScript assumes 2:1 eliptical heads on the drum.

Drum Inside Diameter, in: Feedwater Flow, lb/hr:
Drum Seam To Seam Length, ft: Specific Volume Of Water, ft3/lb:
Bottom of Drum to NWL, in:
Bottom of Drum to LLA, in: Bottom of Drum to LLSD, in:
Bottom of Drum to HLA, in: Bottom of Drum to HLSD, in:
Total Drum and Head Volume, ft3: Normal Water Level Volume, ft3:
Time From NWL to LLA, min: Time From NWL to LLSD, min:
Time From NWL to HLA, min: Time From NWL to HLSD, min:


The formulas and correlations presented herein are all in the public domain and are to be used only as a learning tool. Note that any product, process, or technology in this document may be the subject of other intellectual property rights reserved by sponsors or contributors to this site. This publication is provided as is, without any warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of fitness for a particular purpose, or non-infringement.

The formulas, correlations, and methods presented herein should not be considered as being recommended by or used by the sponsors of this site. The purpose of this site is educational and the methods may or may not be suitable for actual design of equipment. Only a fired heater design engineer is qualified to decide if a calculation or procedure is correct for an application.