Share

Enhancement of free-cooling opportunities through tertiary pumping.

Author(s) : OCEJO J.

Summary

In multiple-chiller applications, it is common to use parallel chillers in a primary, or production, loop, each with its own dedicated lump. The load is placed in a secondary, or distribution, loop, hydraulically decoupled from the production loop with its own pumping arrangement. If a heat exchanger is added to take advantage of free-cooling opportunities, extensive piping, valving, and pressure drop limitations have to be addressed or the distribution pump would have to carry the extra head loss imposed by the heat exchanger all the time. An alternative that offers both simplicity of control and diversity is to incorporate a tertiary, or free-cooling, loop with common piping with the distribution piping for heat transfer but hydraulically decoupled from the rest of the system. Details on piping arrangements, pumps and valves are given.

Details

  • Original title: Enhancement of free-cooling opportunities through tertiary pumping.
  • Record ID : 1995-2429
  • Languages: English
  • Source: ASHRAE Transactions 1994.
  • Publication date: 1994
  • Document available for consultation in the library of the IIR headquarters only.

Links


See other articles from the proceedings (72)
See the conference proceedings

Indexing