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Esim Review

ESim seems like a fairly useful tool in our analysis of our overall house energy usage. The main benefit of this software is that it can be as simple or as complex as we want it to be.

The software is run by editing data files based on the type of design that is being calculated (passive solar, single zone, or multi-zone). The parameters to be entered are vast, and include the obvious dimensions, windows, doors, etc. However, it also includes a large number of variables that may often be overlooked, such as heating and cooling points, window overhangs, etc.

Another useful feature is the usage of actual weather data files (file type TMY2) which are available free on the internet for a number of cities. These help accurately calculate the energy usage during normal weather conditions.

The numbers that are calculated are fairly standard, and are also represented in graphical format, but considering the ease of use of this tool, I would definitely recommend it.

Neal Hamer

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