Dear All
We are currently working on a Major Renovation Building. we are confused a lot in selecting a base case for Energy Modelling
1.Is there any specific modelling guidelines for Major Renovation Buildings
2.What is the base case for Energy Modelling
3.Is ASHRAE 90.1 is a Base case for Lighting, Building Envelope, HVAC Etc.
4.Is our previous building condition is take it as Base Case for Lighting, Building Envelope, HVAC Etc.
5.We purchase some new machines now we are going to work out a Exceptional calculation in that we need to documenting systems used to perform the same function in other newly constructed facilities (three facilities built within the past five years of the project registration date)
In our case Our Project is Major renovation so is it ok to take project registration date for consider three facilities built within the past five years for base caseor we take a date of major renovation start date or any other date
6.we have some already used machines and the machines are energy efficient we also done a exceptional calculation for that machines/Equipments but they are available in site before major renovation
.is it acceptable
It is acceptable means which date is consider for consider three facilities built within the past five years for base case
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5931 thumbs up
December 21, 2015 - 9:52 am
1. Appendix G. The latest section 1.4 tables should also be used to help you correctly model the baseline.
2. Defined in Appendix G.
3. Yes. Appendix G.
4. Typically only the previous building envelop can be modeled in the baseline. If you are keeping HVAC it is modeled identically in the baseline and proposed. Lighting is the 90.1 allowance.
5. Either would work. This is not a rigid rule.
6. Hard to say without specifics.
SAMY Chamy
EnginneerT&T Green
12 thumbs up
December 22, 2015 - 5:20 am
Dear Marcus:-
1.Condition :- The machines are purchased at may 2013 before renovation and renovation works start at may 2015 and LEED registration is done at November 2015 only.
The machines are energy efficient so exceptional calculation are done for these machines. in this case which date we take for base case facilities (three facilities built within the past five years of the project registration date)
The machine & Equipment are Air compressor with VFD, Boiler with Condensate recovery base cases are Air compressor without VFD, Boiler without Condensate recovery respectively.
Is it acceptable.
2.Main Doubt is "what are the machines are eligible for Exceptional calculation"
Options are
A.Machines and Utility equipment available before Renovation
B.Machines and Utility equipment purchased at & After Renovation
C.All the machines in project
3.
Marcus Sheffer
LEED Fellow7group / Energy Opportunities
LEEDuser Expert
5931 thumbs up
December 22, 2015 - 10:19 am
1. Use November 2015. No one can tell you if what you are doing is acceptable. Based on what you wrote you should be doing exceptional calculations to claim any savings and I don't see why you should not be able to do so. You will need to provide sufficient justification for the selected base cases proving that they are not standard industry practice for your specific situation.
2. None of the above. All of the new equipment purchased during the renovation are eligible. Some of the equipment purchased before the renovation may be eligible. I am not aware of a specific time frame for LEED in terms of how old the equipment may be and still claim savings associated with it. I would ask GBCI if you can claim savings for existing equipment. Whether you can may be related to each individual energy saving strategy rather than the age of the equipment. For example, many boiler technologies have not changed much over the years but data center cooling strategies have evolved rapidly.