Appendix A – Cooling Load Profiles
Appendix A – Cooling Load Profiles
A design-day cooling load profile is an hour-by-hour listing of the loads for a 24-hour day. Conventional
air conditioning system sizing is based on the peak design cooling load for the year. Ice storage system
sizing is based on the maximum daily total cooling load (total ton-hours over a 24 hour period) as well as
the peak hourly load (tons). An understanding of the cooling load profile for each cooling circuit is
valuable when designing an Ice Bear unit.
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Tons
Time of Day
Figure 30 – Design-Day Cooling Load Profile (Example)
When designing a building cooling solution using an Ice Bear unit, you will need an hourly load profile
worksheet to determine the design-day cooling solution. You should consider two design days: the day
that requires the maximum total cooling over a 24 hour period and the day with the peak hourly load for
the year.
A load profile worksheet template is provided on the next page.
Oftentimes the Ice Bear unit is used to shift the maximum connected load, 5 tons for six consecutive
hours, coincident with the utilities’ most costly on-peak billing period, typically Noon – 6 pm. This is
especially true when displacing one stage of a multi-stage system in a location that has a high demand
(kW) charge.
Ice Bear
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30 Unit Application Guide
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