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Energy Analysis A - Process Maps (PM)
Energy analysis is concerned with predicting the use and cost of energy use and cost within buildings. It takes into account as input data:
- Building layout including the layout and configuration of spaces
- Building construction including the energy performance of all construction elements including walls, floors, roofs/ceilings, windows, doors and the like
- Building usage including functional use and occupancy of spaces
- Conditioning systems including lighting, HVAC, etc.
- Utility rates provided by the user
- Weather data
The output results of energy analysis may include:
- assessment of the space and building energy performance for compliance with regulations and targets
- overall estimate of the energy use by space and for the building and an overall estimate of the energy cost
- time based simulation of the energy use of the building and time based estimate of utility costs
- lifecycle estimate of the energy use by space and for the building and a lifecycle estimate of the energy cost
For the purposes of this process map, energy analysis is considered to include the assessment of heating and cooling demand within a building.
Various types of analysis are within the scope of this process map including:
- Setting comfort criteria for spaces including minimum and maximum required indoor air temperatures (summer and winter), minimum fresh air requirements
- Simple heat loss/gain calculations based on minimal data provision
- Detailed heat loss/gain calculations using well defined analytical methods
- Energy labelling calculations using analysis methods mandated by legislation
- Analysis of energy consumption in meeting the building energy demands
- Optimisation of energy performance related to fuel type for lifecycle cost, environmental impact issues, comfort aspects
Energy Analysis 1 - Analyze Energy (Programming) - Energy Analysis (PM) 2 - Analyze Energy (Sketch) 3 - Analyze Energy (Full Concept) 4 - Analyze Energy (Coordinated)
Process Overview
Use this section to get a more detailed overview of the process described above. Use the diagrams to navigate to the description of the different sub processes or tasks identified. 
The table below lists all identified sub processes or tasks shown in the above diagram. In addition it links to the specified phases in the reference process to which it belongs.
| Id | Type | Name | Description | Process Stage(s) | Input | Output |
|---|---|---|---|---|---|---|
| 1 | Sub-Process (collapsed) | Analyze Energy (Programming) | This process is concerned with determining the comfort, energy demand and energy use of a building based on the initial programming of a project. For a building requiring a high degree of energy efficiency, the energy analyst is considered to be able to influence the overall spatial and envelope design of a building at this stage. |
Outline Feasibility(2), Substantive Feasability(3) | Exchange Building Model - Programming (ER) | Exchange Energy Analysis Model - Demand (ER) |
| 2 | Sub-Process (collapsed) | Analyze Energy (Sketch) | Determines the energy demand and use of a building based on spatial layout and initial estimates of building construction. Energy analyst is considered to be able to influence the overall spatial and envelope design of a building at this stage. |
Outline conceptual design(4) | ||
| 3 | Sub-Process (collapsed) | Analyze Energy (Full Concept) | Determines the energy demand and use of a building based on the detailed spatial layout and with knowledge of the building elements used and their construction. The population of spaces in terms of people, equipment and technical solutions is known at this stage so that all constituent parts of the energy demand are taken into account. | Full conceptual design(5) | ||
| 4 | Sub-Process (collapsed) | Analyze Energy (Coordinated) | This process adds an energy label to a building. | Coordinated design and procurement(6) |
Role Overview
The primary roles shown in the process model diagram (as "swimlanes") are defined as:
- Energy Analyst (RS)
- Facilities Management (in this case, concerned with the electrical engineering aspects og facilities management)
1 - Analyze Energy (Programming) - Energy Analysis (PM)
(Information Delivery Manual (IDM))
2 - Analyze Energy (Sketch)
(Information Delivery Manual (IDM))
3 - Analyze Energy (Full Concept)
(Information Delivery Manual (IDM))
4 - Analyze Energy (Coordinated)
(Information Delivery Manual (IDM))