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The Economizer: What, Why, and How?

What Is an Economizer?

Economizers are mechanical devices intended to reduce energy consumption or perform a useful function such as preheating a fluid. In basic terms, an economizer is a heat exchanger. The orientation of an economizer can be vertical, horizontal, or cylindrical depending on boiler size and space available, and it is fitted directly to the boiler near the flue gas outlet.

How does it Work?

In a boiler system, an economizer captures the heat of the flue gas and transfers it to the feed water. The process is simple. As the flue gas exits the boiler, it enters an economizer with finned tubes. The finned tubes absorb the heat and raises the temperature of the boiler feed water, lowering the needed energy input.

Why Add an Economizer?

Adding an economizer will increase boiler efficiency by 10-12%. In addition, the reduced amount of energy required for heating results in reduced fuel consumption and cost.

Nationwide Boiler’s EconoStak Economizers

A Nationwide Boiler EconoStak consists of the economizer and all of the associated piping and structural supports required for very efficient and safe operation. It is a fabricated assembly of finned tubing that uses hot stack gases to heat the boiler feed water. The EconoStak economizer reduces stack emissions and thermal pollution, as well as provides fuel cost savings. It can be can be utilized with one of Nationwide’s trailer-mounted rental boilers, or can be purchased with a new or reconditioned boiler.

 

 

 

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