Hello, I have read thru the previous posts and responses, and hope this is not a redundant question. I am working on a C&S major renovation. We are going to follow Option B from IPMVP Vol.3. I will need to monitor the ECMs we have included in the system design. At this point we are targeting chillers with VFDs, variable primary pumping, cooling towers with wet bulb tracking, and high efficiency condensing boilers. I believe I only have to monitor the electric usage, but like to verify how best to monitor the equipment usage. Is it possible to monitor the main power feed to the chillers, monitor the pumps as a whole, the power feed to the boilers, and cooling towers? Thank yuo in advanced!
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Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5922 thumbs up
March 2, 2012 - 4:18 pm
Are those the only energy efficiency measures implemented in the project? If there are any interactive EEMs that affect the energy use of other systems (like lighting or envelope improvements) you will need to use Option D.
Randy Cook
Associate DirectorThe Rock Brook Consulting Group
6 thumbs up
March 2, 2012 - 4:20 pm
Because we are dealing with a C&S major renovation project, the tenant lighting and the building envelope are not being targeted with ECMs.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5922 thumbs up
March 2, 2012 - 5:13 pm
The envelope is exactly the same as code? If not it affects HVAC and the savings must be verified. Option B is almost never used on new construction or major renovation projects but it is possible.
The point is in a major renovation project of any sort you have to verify the savings from all of the EEMs. If those are all the EEMs then Option B may apply.
There are not specific monitoring requirements in the IPMVP under any of the options. You will need to measure what you need to verify your savings projection tool. Sounds like you will have to monitor more than electric if one of your measures is condensing boilers, so gas usage of the boilers as well.
The question to ask is based on how you are projecting savings, what data do I need to gather to verify the savings? Do you have pre-renovation data to compare against (and is the comparison valid) or are you using an energy model or engineering calculations or a combination? How did you generate the projection of savings you are trying to verify?
So basically the monitoring need is dictated by the savings projection method and budget (i.e. what is the cheapest way to gather the data you will need).
I know my answer is kinda vague and full of more questions but so is the IPMVP!