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Energy Conservation Analysis
There are many building simulation programs on the market that calculate the annual energy use for a facility. These programs are difficult to for use in energy conservation projects. The designer must run a complete simulation for each intended design or systems modification. This can be time consuming and expensive. This report describes a program that performs an energy analysis in a way that is much more convenient for the energy analyst. Several common conservation projects are featured in the program: tinting glass, single-to-double pane conversion, adding roof insulation, savings from landscape features, external wall shading and reduction in outside air. Each of these are evaluated in a separate building load subroutine. The program computes and displays the annual load profile for each of these components of the envelope. It can then calculate the exact savings possible, for example, by modifying south-facing window, or by planting fast-growing shade trees to the west of the building. This is to permit the user to focus limited funds on specific projects. The analysis takes into account geographic location, ambient temperature and latitude. It also permits the user to modify these parameters to conform to unique local conditions. The software will rotate a building as well, to discern the effect on loads of a change in building orientation. Another feature is the ability to separate the building load by specific elements. Each screen used to input glass, roof, wall or floor data also gives a reading on the load attributed to that particular element alone, (e.g. each individual wall, window or roof section) converted into annual energy use. This is useful to the designer as it gives a relative perspective on the building load, of changes in insulation, glass area or wall color. The program is complete with help screens, pull-down menus, input help and range constraints on data entry. It also has a full range of data editing review and print-out features.
Clark, W. H. (1994). Energy Conservation Analysis. Energy Systems Laboratory (http://esl.tamu.edu); Texas A&M University (http://www.tamu.edu). Available electronically from