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Title of Effective Practice: - California Postsecondary Education ...

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Direct Connection to Policy Area 6 <strong>of</strong> The Illinois Commitment<br />

Chiller Project<br />

Southern Illinois University - Edwardsville<br />

What issue or need is addressed by the effective practice?<br />

The former central cooling system for the campus consisted <strong>of</strong> four single-stage, lithium bromide absorption<br />

chillers, one two-state lithium bromide absorption chiller, and two electric driven centrifugal chillers. The<br />

ability to properly cool the campus’ major facilities was dependent on the reliable functioning <strong>of</strong> all <strong>of</strong> those<br />

chiller units. However, the chillers were obsolete (more than 35 years old), no longer energy efficient, and in<br />

extremely poor condition. For example, in June <strong>of</strong> 2000, all four single-stage chillers failed at once, leaving the<br />

campus with inadequate cooling.<br />

Description <strong>of</strong> the effective practice:<br />

As a result <strong>of</strong> this project, the chillers were replaced with a centrifugal chiller and a new chilled water storage<br />

tank that now holds 3.3 million gallons <strong>of</strong> chilled water. The tank utilizes the principles <strong>of</strong> thermal stratification<br />

for chilled water storage and allows chilled water to be produced at night at low utility rates and used during the<br />

day.<br />

How does this practice achieve sustainability?<br />

The cost <strong>of</strong> the project was $5 million and was paid for by state appropriations for SIUE to the Capital<br />

Development Board with additional funding from university operating funds.<br />

What are the results/measurable outcomes?<br />

The project was awarded the Illinois Capital Development Board Chairman’s Award for Programmatic<br />

Achievement in March 2006.<br />

Contact Information<br />

Name: Kenn Neher<br />

Email: kneher@siue.edu<br />

Phone: (618) 650-2536<br />

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