Jefferson County Community College

Case Study

Jefferson County Community College Ice Storage System

Background:

The James McVean College Center, one of Jefferson Community College’s eight permanent buildings, was built in 1966 and is in need of major renovations. It houses a large multipurpose gymnasium, offices, space for music instruction, a dance studio, dining facilities, and fitness center. It also serves as a venue for the college’s graduation ceremonies. The facility was originally built without air conditioning; over the years a combination of direct expansion split systems and window air-conditioning units have been installed. In order to improve efficiency and increase comfort for its students, faculty and guests, the college wanted to centralize cooling on a limited budget.

Project:

A pre-engineered solution, integrated with a new controls system and operator interface was installed. The 90-ton air-cooled scroll chiller with four thermal storage tanks serve the desired 200-ton peak cooling capacity. The plant makes ice at night during off-peak hours when the building cooling and power load is low to take advantage of lower-cost, off-peak electricity and milder outdoor conditions for improved system efficiency. During the day the ice and the chiller work together to cool the facility. The ice tanks and the downsized chiller help the college manage peak electrical demand and avoid a costly substation upgrade. Maintaining a more consistent temperature throughout the building increases comfort and contributes to creating a more positive learning enviornment for students.

In addition, the controls system allows facility managers to monitor equipment, make set-point changes, manage alarms and decide whether to melt, make or preserve ice. This highly efficient and simple system design allows ease in maintenance and repair. The project provides a design and operating basis for similar, future projects.

Pictuee of the ice storage at Jefferson County community college

Capital Facilities