With the costs of heating fuels
continuing to rise, improving boiler efficiency is a prime concern of
most facility managers today. When speaking of improving boiler efficiency, several
basic terms regarding boiler efficiency need to be well understood.
Heat Transfer Efficiency is an inherent property
of boiler design, and manufacturers typically indicate the values of
efficiency that the specific boiler design provides. It is simply
a ratio of how much heat must be put into a system to get a given amount
of heat out. It should be noted that the manufacture
specifications for heat transfer efficiency for a specific boiler are
for a perfectly clean system. Heat transfer efficiency loss can have a
very significant impact on overall energy efficiency. ECMI helps
our clients keep boilers operating at peek heat transfer efficiency by
eliminating lime scale from within their boiler and other facility
Heat Loss Ratio is also an inherent property of
boiler design. Manufacturers typically indicate the values of heat
loss efficiency that the specific boiler design incurs.
Improvements can most often be made, in regard to heat loss ratio efficiency, by
better insulating the boiler and piping systems. Heat loss ratio
is also a value of the building envelope itself, and boilers have to
react in relation to how a building looses heat. Improvements in
heat loss for a facility should also be looked at when considering
methods to improve efficiency. Improvements include better
insulating the facility, improved glazing, and better control of
air-flow within, and leaving, the building.
Operating Efficiency (also called seasonal
the boiler relates to the actual and ever-changing conditions found
within a facility, how the boiler reacts to the load, and the amount of
fuel consumed over a period of time. This value is not generally quantified by
boiler manufacturers due to the many variables involved in daily
operation, and variables due to the building envelope itself. Since a boiler operates most efficiently when it runs
constantly (or at full load), the trend of current technologies is to have several smaller
boilers managing supply water needs instead of one large unit. This way each boiler operates
closer to optimum efficiency when they are called on for heat.
We have found that significant improvements
can be achieved in boiler efficiency by better controlling how the
boiler operates in response to the changing conditions in a facility.
(Also refer to
Boiler Efficiency Graphs)
ECMI and our Associates help our clients improve boiler
operating efficiency in three ways:
By implementing the Savastat LC on
compatible boiler systems to better manage boiler operation and
optimizing firing patterns based on real-time system load.
By implementing the HydroFLOW
to improve heat exchange efficiency loss due to limescale build-up in
the boiler system and heat exchangers throughout the facility.
By implementing the Stack Draft Regulator System on
appliances to manage system stack draft losses.
By improving Boiler operating efficiency, boiler heat
efficiency, and stack drafting, significant energy savings can be achieved. The
combination of the systems can easily achieve savings in excess of 40% during a typical
heating season. Savastat LC implements "load compensation control"
which enables the boiler to function more efficiently in real time based
on the current ever-changing weather conditions and facility
environment, HydroFLOW keeps the system free of limescale and
operating at peak heat exchange efficiency, and the Stack Draft
System optimizes appliance performance by reducing excess stack draft
How ECMI Helps Clients Improve Boiler
Power Plant Efficiency
Is compatible with low pressure hot water heat loop system
Will eliminate boiler short cycling
Will extend the boiler and equipment's lifecycle
Is easily installed with little down-time
Will provide a
savings or a 24 month or less ROI.
Will remove limescale from inside the boiler and piping
Continues to keep limescale from forming within the system.
Keeps the boiler operating at peek efficiency.
Eliminates the need for frequently scheduled boiler cleaning,
as well as the need and associated costs for expensive and environmentally
Brings appliance efficiency back near
to the manufacturer's specifications
Provides a better flame pattern across
the heat exchanger and eliminates "rope flame"
Cleaner burns means less soot and lower
O2 readings in the stack
More efficient burns also means less
fuel going up the stack
Keeps more heat in the system thus
reducing burn cycles and burn frequency
Works with most any appliance with a
flame and a stack!
VERY Significant savings when
multiple appliances feed into a common stack!
Contact us so we can work with your
organization to help improve boiler power plant efficiency in your