COOL$olutions The Cool Solutions Company

5007LincolnAvenue, Suite 201, Lisle, Illinois60532U.S.A.

tel: 1.630.353.9690 / fax: 1.630.353.9691 / e-mail:

January 13, 2004

Data Requested for Feasibility Analysis of Thermal Energy Storage (TES)

Please provide as much of the following data as practical, as well as any other relevant information:

  1. Peak system cooling load (tons), present and future (with timing of future load growth)
  1. 24-hour peak design day hourly cooling load profile, present and future (with timing of future load growth). Note: alternatively, provide operating logs and/or description of end-use types and sizes to allow estimation of the peak day hourly load profile.
  1. Typical chilled water supply and return distribution system temperatures (F) at high load times (and whether constant flow with 3-way control valves at loads, or variable flow with 2-way control valves)
  1. Approximate layout (plan view) of cooling loads (buildings) and chiller locations
  1. Existing chiller plant equipment (if any), including for each unit:
  • Chiller type (e.g. centrifugal, screw, absorption)
  • Chiller driver type (e.g. electric motor, gas engine, steam turbine)
  • Chiller manufacturer, model, age, condition, and estimated remaining useful life
  • Chiller capacity (tons)
  • Chiller supply and return temperatures (F)
  • Chiller nominal energy consumption (kW/ton) at design conditions
  1. Desired level of redundancy or spare chiller capacity (e.g. none, “N+1”, or X% of peak to be “firm”)
  1. Existing electric rate structure (and any available optional tariffs or applicable DSM rebate programs)
  1. Space or aesthetic limitations or preferences regarding storage (e.g. possible location(s), maximum height, maximum diameter, nominal soil bearing capacity), or nameplate data from any existing storage tank(s) which could possibly be converted to TES service
  1. Site construction labor requirements, if any (e.g. union, prevailing wage, open)
  1. Required schedule or in-service date
  1. Any other system problems, concerns or desirable results (e.g. would there be a benefit to colder chilled water supply temperatures to the loads, and if so, how cold; or is there a limitation to existing distribution piping that could be improved via a lower temperature, or via location of storage remotely from the chiller location; or is there value from use of TES as fire protection water storage?)

We look forward to working with you to explore and maximize the benefits of TES for your application.

Respectfully,

John S. Andrepont, President

TheCool Solutions Company