Going the extra mile by Tony Willis

Once you’ve implemented all of the obvious energy-saving measures in the boiler room, what comes next? Tony Willis of Sabien Technology suggests the next obvious step

Boiler run-times don’t measure up

Reduced boiler run-times on modulating and two-stage boiler plant do not necessarily equate to energy savings. The only accurate measures are a reduction in kWh or fuel consumption, says Tony Willis of Sabien Technology 

Delivering further efficiencies from fully modulating boilers.

There are a number of contributory factors that can cause ‘fully modulating’ boilers to dry and short cycle. Tony Willis, Technical Director with Sabien Technology, discusses theissues.

Fine-tuning boiler efficiency

To increase efficiency from commercial boilers Building Services Engineers must look beyond the existing BMS and boiler controls. *Tony Willis, Technical Director, Sabien Technology explains further.

What is IPMVP?

IPMVP – Overview

  • Presents a framework and defines terms used in determining ‘savings’ after implementation of a project
  • Specifies the topics to be addressed in an M&V Plan for a specific project
  • Allows flexibility in creating M&V Plans, while adhering to the principle of:


o  Accuracy

o  Completeness

o  Conservativeness

o  Consistency

o  Relevance

o  Transparency

What is Boiler Dry Cycling?

The boiler is currently at set point and is in stand-by mode as further heat is not required from the system load. Due to the ambient radiated heat losses, together with the flue draught heat losses (“standing losses”) the boiler will naturally cool down over time which may cause the boiler temperature controls to instruct the boiler to re-fire and return the boiler back to set point. In this case the heat is not being used by the system base load; it is only replacing the “standing heat loss” and therefore wasting energy.