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Experience with 113 Retrofit Insulation Surveys
Abstract
We have surveyed 113 plants for thirteen
clients. The results of 21 recent surveys at
today's average fuel price, show an average project
scope generation of $151,000 while saving about
5MMBTU/hour with a 72% DCF rate of return.
The size of the retrofit project generated, or
scope, is of course sensitive to the fuel price.
This is an important consideration because of the
variability of fuel price. A study of the effect of
fuel price on project scope generation and on return
has been made using sophisticated computer programs
designed for this purpose. These results indicate
that scope generation may vary from $50,000 for
$3.00 fuel up to $80,000 for $6.00 fuel. When this
happens, the project return will increase from 100%
up to 165% per year.
The main problem that we have found with
retrofit insulation surveys is the processing of
detail in existing plants. The solution is the
preparation or selection of the right system for
approaching the problem utilizing computer programs.
The time required to generate systematic approaches
to insulation surveys and the generation of retrofit
projects are sizable. The continued heat losses
while studying the project are also significant.
Thus, the heat losses suffered while deciding how to
insulate can be sufficient to pay for an insulation
survey.
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Citation
Webber, W. O. (1985). Experience with 113 Retrofit Insulation Surveys. Energy Systems Laboratory (http://esl.tamu.edu). Available electronically from https : / /hdl .handle .net /1969 .1 /93148.