ETL 1110-1-181
12 Jan 98
designer can compare and evaluate the baseline chiller proposals (per
the specification) along with each of the additional chiller proposals.
The designer will have to perform an economic comparison between each of
the proposals in order to determine the optimum efficiency to select.
B-9. SAMPLE ECONOMIC COMPARISON. In comparing various chiller
proposals, the designer must keep in mind that the chiller with the best
part load or full load efficiency is not always the optimum chiller to
select. Factors such as chiller first cost, chiller energy usage,
available energy costs, etc. will all be influential in the chiller
selection. As an example, refer to Appendix C for an economic
comparison of various electrically-driven, water-cooled 200 ton
centrifugal chillers.
B-3
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