subway-air-conditioning - Load profile

Specific air conditioning requirements for subways

» The air conditioning demand is mainly subject to users density generating the most heat to be removed
» These places have two cooling demand peaks corresponding to the working peak hours
» Between those two periods, cooling demand goes significantly down
» At night the subway is closed allowing to use the chillers for storing cold energy


Benefits yielded by Cryogel cold storage technologies for such installations

» A moderate minimum load in requested all day long
» Chillers capacity can be significantly reduced
» Smaller electrical installation possible
» Lower operating costs due to a reduction in peak utility usage, maintenance and more efficient use of chillers
» Less space required for cooling towers and chillers


How does it apply to your own installation ?

Base assumptions:
» The minimum cooling capacity represents 20 % of the maximum capacity
» Peak hours are from 7.00 am till 10.00 pm and from 5.00 pm till 8.00 pm


You can use the sheet below for a first-cut simulation based on these assumptions :

You have specific requirements differing from these first assumptions ? Please contact us for a more detailed and custom analysis.
Cryogel, 52 bis Boulevard Richard Lenoir, 75011 Paris, France – – +33 1 47 00 85 81