The purpose of energy simulation is to estimate the total annual energy consumption of buildings so as to inform the building design process to create energy efficient choices. Energy analysis takes into account variety of factors involved in the design, including but not limited to:
Building location
Building orientation and interior layout
Architectural features (e.g. room locations, sizes, orientations )
Types of materials for walls, interiors, floors and roofing
Exchange of energy owing to infiltration of air into a building
Heat generated by the building's occupants
MEP system options
Lighting power density
Hot water requirement
On-site renewable energy
Direct purchase of energy to meet the project's energy needs
Inputs
The typical inputs required to undertake the analysis are:
Weather Data
Site Plan
Architectural Plans
Fenestration Schedules and Properties
HVAC Plans and Details
Lighting Details
Occupancy Details
Equipment Loads
Domestic Water Heating
On-Site Renewable Energy Details
Outputs
The typical outputs generated from the analysis are graphical and tabular representations of:
Energy consumption (kWh) generated for various systems modeled on a monthly basis
Monthly utility bills
Tools & Approach
eQuest 3.61 B is used for the analysis. Customers will be offered choice of tools in the near future
Models are directly created in eQuest using drawings and specifications provided
BIM models created in the Revit Architecture 2009 suite can be imported via gbXML for geometric representation only
Relationship to LEED® Credits
USGBC LEED® offers multiple credits under the Energy and Atmosphere category requiring the Proposed Building, as appropriately represented in a model to be more efficient than the Baseline ASHRAE 90.1 model in terms of energy and cost. The percentage cost saving of the proposed model over the baseline model helps in achieving LEED® points for this credit. In this situation Baseline ASHRAE 90.1 building must also be analyzed in addition to the Proposed building.
Consulting Support
The analysis can be executed multiple times for various design configurations or application of different Energy Conservation Measures (ECMs) in order to support tradeoffs between energy efficiency and capital costs involved in the ECMs.