Employ someone to do it for you. Using any software. Wish you the best.
======================
All can be done using EPlus, as far as I know. If an item is not available, a module can be written to cover your need.
===================
X-ray? No problem. I have worked with X-ray equipment up to 330KV. How do you want to simulate it? Direct viewing, with intensifier? film? CCD camera? or for tissue burning? Not kidding. or just kidding?
====================
Past papers? Ask Google.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Mon, 7 Nov 2011 15:48:43 +0000
Subject: [EnergyPlus_Support] Energy Models for existing buildings
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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__,_._,___
======================
All can be done using EPlus, as far as I know. If an item is not available, a module can be written to cover your need.
===================
X-ray? No problem. I have worked with X-ray equipment up to 330KV. How do you want to simulate it? Direct viewing, with intensifier? film? CCD camera? or for tissue burning? Not kidding. or just kidding?
====================
Past papers? Ask Google.
Dr. Li
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
From: jim@xxxxxxxxxxxxxxxxxxxxxxxxxxx
Date: Mon, 7 Nov 2011 15:48:43 +0000
Subject: [EnergyPlus_Support] Energy Models for existing buildings
Dear Forum,
I am soliciting input from you regarding your experience in using full, 8760 hour energy models for energy audits of existing buildings. I have used EnergyPlus for a few of these and am starting to get an opinon about what is important for an existing building energy model. I am convinced that the rules are different than for a new building, but would like to know what your experience has been.
My primary interest is the "big picture" factors, not so much the fine details. I have made an outline of factors and considerations below and will appreciate your feedback and comments as you are able!
p.s., I suspect that I am not the first to ask this question! If you are aware of past conferences or papers, please point me in the right direction.
Energy Audits Which Utilize an Energy Model
Factors which imply the need for an energy model
? Multi-use (different schedules for portions of the building)
? Radically different construction types in different portions of the building
o e.g., lightweight construction added to massive construction, high % glazing added to low % glazing
? Multiple air handlers of different types
o E.g., RTUs for one portion, baseboard heating only for another portion
? Anticipation of changing to one of the above
? Other???
What is the minimum data needed for a defensible / reliable energy model?
? Correct total wall area plus window area by elevation?
o With low regard for a perfect match to actual geometry
? Schedules of operation?
? Motor power for fans, pumps?
? Air and water flow for fans and pumps?
? Special uses?
o Pool
o Assembly
o Specialized equipment such as servers, X-ray
? Plug loads?
? Outdoor air flow?
? Lighting loads in W/sq.f.t? W / zone or room?
? Exterior lighting?
? Temperature / humidity setpoints?
? Air handler control setpoints?
o Which ones?
? Shading elements?
What method should be used for evaluating hard-to-measure data such as actual lighting and plug load use, outdoor air flow, heating / cooling system efficiency at part loads, infiltration, insulation (especially for old buildings with no construction drawings), process power
? Trial & error? Using user-imposed restraints?
? Benchmark or past project data?
? ???
How closely must the energy model match past energy use?
? Match annual consumption +-10%? >75% R2 month-by-month?
? Is actual weather data important? (vs. TMY / "typical")
? ???
How carefully must the energy model match define ECMs?
? Annual? Peak? Efficiency of new components
? Generic or manufacturer-specific performance data?
I am soliciting input from you regarding your experience in using full, 8760 hour energy models for energy audits of existing buildings. I have used EnergyPlus for a few of these and am starting to get an opinon about what is important for an existing building energy model. I am convinced that the rules are different than for a new building, but would like to know what your experience has been.
My primary interest is the "big picture" factors, not so much the fine details. I have made an outline of factors and considerations below and will appreciate your feedback and comments as you are able!
p.s., I suspect that I am not the first to ask this question! If you are aware of past conferences or papers, please point me in the right direction.
Energy Audits Which Utilize an Energy Model
Factors which imply the need for an energy model
? Multi-use (different schedules for portions of the building)
? Radically different construction types in different portions of the building
o e.g., lightweight construction added to massive construction, high % glazing added to low % glazing
? Multiple air handlers of different types
o E.g., RTUs for one portion, baseboard heating only for another portion
? Anticipation of changing to one of the above
? Other???
What is the minimum data needed for a defensible / reliable energy model?
? Correct total wall area plus window area by elevation?
o With low regard for a perfect match to actual geometry
? Schedules of operation?
? Motor power for fans, pumps?
? Air and water flow for fans and pumps?
? Special uses?
o Pool
o Assembly
o Specialized equipment such as servers, X-ray
? Plug loads?
? Outdoor air flow?
? Lighting loads in W/sq.f.t? W / zone or room?
? Exterior lighting?
? Temperature / humidity setpoints?
? Air handler control setpoints?
o Which ones?
? Shading elements?
What method should be used for evaluating hard-to-measure data such as actual lighting and plug load use, outdoor air flow, heating / cooling system efficiency at part loads, infiltration, insulation (especially for old buildings with no construction drawings), process power
? Trial & error? Using user-imposed restraints?
? Benchmark or past project data?
? ???
How closely must the energy model match past energy use?
? Match annual consumption +-10%? >75% R2 month-by-month?
? Is actual weather data important? (vs. TMY / "typical")
? ???
How carefully must the energy model match define ECMs?
? Annual? Peak? Efficiency of new components
? Generic or manufacturer-specific performance data?
__._,_.___
Primary EnergyPlus support is found at:
http://energyplus.helpserve.com or send a message to energyplus-support@xxxxxxxx
The primary EnergyPlus web site is found at:
http://www.energyplus.gov
The group web site is:
http://groups.yahoo.com/group/EnergyPlus_Support/
Attachments are currently allowed but be mindful that not everyone has a high speed connection. Limit attachments to small files.
EnergyPlus Documentation is searchable. Open EPlusMainMenu.pdf under the Documentation link and press the "search" button.
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