What are B.T.U’s and why are they important in boiler blowdown processes and cost savings?

B.T.U stands for British thermal unit and is commonly defined as the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit. Other than safety measures, BTU’s are arguably the most important factor to spend time and energy on when it comes to your boiler process. In the boiler room, B.T.U’s are their own form of currency. It takes a lot of energy to produce heat to boil water and to keep it boiling. The more efficient the boiler operator can be, the less energy, heat, and fuel are needed to produce steam.

Most boiler applications run 24/7/365. The energy to produce heat can come from natural gas, electric, or coal, among other sources and processes. So the smallest amount of B.T.U’s you can save will add up to big savings to your fiscal year’s bottom line.

There are many processes in the boiler room dedicated to maintaining and reusing already generated B.T.U’s. Condensate return pumps return condensed steam back to the boiler water as make up water, deaerator (D/A) tanks can reuse steam, and boiler chemicals are dosed into the boiler to make sure the water remains free of scale build up and of dissolved solids which hinder heat transfer from the boiler’s fire tubes to the water. 

And last but not least, when your boiler(s) application calls for continuous blowdown to maintain clean water, one can recover B.T.U’s from this as well. Madden Manufacturing is one of the industry leaders in designing boiler blowdown equipment, and specifically blowdown heat recovery systems.

Concept of B.T.U’s & Heat Recovery

To get you in the right frame of mind for this topic, think about when you’re preparing to cook noodles and need to boil a pot of water. Some may simply fill a pot of water and turn the stove on high and not think twice about it. However, others may think to specifically fill their pot with the hottest water possible from the sink. In this case the water would come to a boil faster and the stove will not have to work as hard.

This is because the hot water from the sink contained more B.T.U’s than it would have otherwise. The stove didn’t need to produce as many B.T.U’s to reach boiling. Usually ground water or city water is around 60-70 degrees Fahrenheit, and your water heater can provide water closer to 100-110 degrees Fahrenheit. That is 40 less B.T.U’s needed to be generated by the stove top to reach boiling.

If you were not familiar with British Thermal units before, hopefully the concept where it concerns boilers is a little clearer now. So let’s see how the Madden Manufacturing Blowdown Heat Recovery System product line works.

Boiler Blowdown Heat Recovery. Fast and Sure Way to Save Fuel and Optimize Boiler Operstion.

65 Years Old US Manufacturer of Steam System Components and Chemical Metering Pumps
Simple, rugged industrial quality pumps and steam system equipment that will provide excellent performance and value.  
– Back Pressure Valves

– Pressure Relief Valve

– Pulsation Dampeners

– Liquid Sample Coolers

– Miniature Heat Exchangers

– Boiler Blowdown Heat Recovery

– Boiler Blowdown Flow Control

– Boiler Blowdown Tanks

– Blowdown Separators

– Chemical Feed System

– Chemical Mixers

– Diaprhragm Metering Pumps

– Various Industrial Metering Pumps
Boiler Blowdown Heat Recovery

See related posted information.


For Inquiry or RFQ (Request for Quotation) on posted technology solution, please email: gregoriojess@yahoo.com

Jess C. Gregorio

Affiliate Technical Marketing and Project Lead Generation Manager for the Philippine Territory



Driving Leads. Adding Sales.
View story at Medium.com


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