(PC-1211) Estimating Energy Savings from Reinsulating Houses

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An excerpt from Program for Hand-Held Computer Estimating Energy Savings from Reinsulating Houses, Building Practice Note - No.36, Division of Building Research, National Research Council of Canada, R.L. Quirouette and E,C. Scheuneman, July 1982, 14 pages

INTRODUCTION
       Hand-held computers are readily available, at prices which make them attractive as computational aids. This program enables a hand-held computer to perform the energy audit calculations used in Building Practice Note No. 20, "Estimating Energy Savings From Reinsulating
Houses"¹. The instruction package is designed for someone who knows little about computers but wishes to save time and effort on manual calculations. In this program, the computer prompts the user for information: it provides a fast and versatile way of performing energy
audit calculations. The program uses the same input data and produces the same output results as in the Energy Savings Chart from Reference 1 (Appendix A). A person can easily change from a calculator to a handheld computer. The symbols and terminology are the same.
Equipment
       The program is written for the Sharp PC-1211 pocket computer. Other hand-held computers such as the Radio Shack TRS-80 can also be used. For the Hewlett Packard and Texas Instrument types of hand-held computers, however, the program would need to be rewritten and adapted.
The Computer Program
       The program is organized into three general parts: the first calls for input data on the main building features, furnace characteristics, climate information and heat energy consumption records. The second part calls for a complete description of the building envelope components by area and thermal resistance, and the third part activates the analysis process to determine savings and cost benefits for various retrofit options.
       The calculations performed by this program are in metric units. It is easily converted to Imperial units by changing one line of the program listing. The program should be keyed in as it is, however, so that it can be checked (debugged) against the sample, which is all metric.
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PROGRAM LISTING
page 3

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