iSERVcmb Case Studies

iSERVcmb Case Studies

Figure 6 – Example of iSERVcmb Case Study

iSERVcmb has shown that understanding what it is reasonable for HVAC system components to consume when designing new buildings or servicing existing ones, will lead to investment in more efficient operation and should allow realistic targets to be set for improvement in specific buildings and systems..

Applying the iSERVcmb process to the operational buildings that participated to the project helped achieve savings of up to 33% in a building’s total electrical energy use – often for little capital outlay.
Across all the buildings on the iSERVcmb database, the actual or projected annual energy savings were around 9% on average. Greater average savings are anticipated if the project were to run longer, as shown by the savings generally being larger in those buildings which have been on the database for longer.

An average annual saving of 18% of the electricity use in iSERVcmb systems where reductions were achieved, with more than a year’s data, is a very encouraging figure – particularly as the project was late in providing reports back to end users – meaning that the full impact was unlikely to be seen over the life of the project. Evidence from those systems that were also in HARMONAC is that full savings can take easily 2+ years to achieve, due to time taken to implement the measures needed to produce all the savings available, and for the full savings to appear in annual reporting.

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