Help Review Energy Efficiency Measure List for ASHRAE 1651-RP

6 posts / 0 new
Last post

For ASHRAE research project 1651-RP, we are trying to
assemble a comprehensive list of energy efficiency measures
that can be considered for new buildings covered by 90.1
except for renewables. The project is titled: "Development
of Maximum Technically Achievable Energy Targets for
Commercial Buildings (Ultra Low Energy Use Building Set)".
Later we will be looking for the combination of measures
that will result in the lowest possible energy consumption
for each building type using EnergyPlus.

Attached is a spreadsheet that describes the 320 energy
efficiency measures gathered to date along with a report
describing how the spreadsheet was assembled. The report
also recommends enhancements to EnergyPlus. After we finish
compiling the list, we will be choosing a subset of measures
to simulate.

Your help is requested to add measures that are missing from
the "EEMs" tab of the spreadsheet. Column A, the name of the
measure, and Column D, the description, are the most
important. When you add measures, if possible, please also
add a web or literature source that describes the measure on
the "References" tab. Your input on any other portion of
the spreadsheet is also welcome.

To learn more about how the list was assembled and the
meaning of each column, a conference call is scheduled for
Wednesday January 23 at 11am central. If you are interested
in attending, please let me know and I will send you the
connection information.

Please feel free forward this email and attachment to others
who might be interested but please CC me when you do so I
can keep track of who has received it.

If you have suggestions, it would be most helpful if you
replied only to me with a revised version of the spreadsheet
attached containing additional rows at the bottom of each
tab with your input.

Please provide input no later than February 20, 2013.

Thank you for your help.

Jason Glazer, P.E.

Jason Glazer's picture
Offline
Joined: 2011-09-30
Reputation: 0

Jason:

I read your message with interest, and started creating new measures, before I realized that you clearly state that this list (and presumably the Title/Purpose/Scope of 1651-RP) is meant to cover measures that apply only to NEW BUILDINGS. In other words - you are not looking for measures that would be appropriate for EXISTING buildings...

Given the sheer amount of existing building square footage in our nation's building stock, and the sheer amount of potential for improvement within the poorer performing actors in this stock, is there any activity that you are aware of where a similar effort as to 1651-RP is being undertaken, yet focused on existing buildings? A few scenarios of the types of measures I am referring to may help describe what I mean..

M1: A 4-pipe VAV AHU with a steam (or hot water) heating coil in series with a cooling coil and where the 2-way modulating coil control valves for either (or both) coils fail to close tightly, either because of actuator/linkage issues and/or valve seat erosion). Repair/replace damaged control valves/valve assemblies.

M2: A Rooftop VAV AHU where the sequence of operations defines the unit outdoor air dampers to close tightly during unoccupied conditions, but where in reality the dampers fail to close completely due to actuator/linkage issues. Repair/replace damaged damper actuator/linkage.

While these may seem like retro-commissioning issues that we do not need modeling tools to help us understand how to 'fix', it's my belief that incorporating simulation-driven estimates of savings from 'fixing' these measures along with other capital improvement measures into packages of improvements can allow us to create more holistic retrofits in existing buildings that achieve deeper savings while yet providing an attractive overall ROI, and ultimately moving the centroid of energy use intensities in our entire built environment. I hate to see measures like I describe get 'left behind', and yet want to understand if there is a way I can still contribute.

All the Best,

Chris Balbach, PE, CEM, CMVP, BEMP, BESA, BEAP

Chris Balbach's picture
Offline
Joined: 2011-09-30
Reputation: 1

Chris,

Great observation!

I come at it from a slightly different perspective:

What are the commonalities and differences between measures for new construction vs. retrofit vs. RCx and optimization?

Even in new construction there is significant potential impact from properly designed, programmed and optimized controls (Cx). And in retrofit there is opportunity for capital replacement that could be viewed as `new' construction.

With respect to RCx, new construction design and Cx, the ability to simulate `sloppy' or broken controls is seriously lacking. Especially within whole building tools that can also capture the enormity of potential interactions. We do it with bin analysis and load profiles built from `experience' simulation tools (Equest) or actual performance data (using inverse methods) . Absent real data (as in new construction) a simulation tool, based on fundamental analysis, is the next best way to create such profiles. But unless the analysis is integral to the simulation, capturing the interactions that may, or may not matter, is difficult, if not impossible.

Can we get there? What do you think?

Mark E. Case

Mark Case2's picture
Offline
Joined: 2013-01-10
Reputation: 0

Chris,

The focus of the 1651-RP research project is just on new
building construction but I think it would be great if a
similar project on existing buildings was started. I
certainly welcome your input on new construction measures.

Perhaps you can start a similar spreadsheet for existing
building measures, I think others on BLDG-SIM might find it
valuable.

Jason

Jason Glazer's picture
Offline
Joined: 2011-09-30
Reputation: 0

Jason, it would be interesting to have an ECM list tied to the type of
"Design Guidelines" algorithm developed for passive design measures by the
Energy Design Tools team at UCLA (copied), having an ability to filter ECMs
using project parameters.

[image: Inline image 1]

*Arpan Bakshi *

Arpan Bakshi3's picture
Offline
Joined: 2012-03-13
Reputation: 0

Interesting idea.

Thanks

Jason

Jason Glazer's picture
Offline
Joined: 2011-09-30
Reputation: 0