.Buildings.DHC.ETS.BaseClasses.PartialIndirect

Information

Indirect cooling energy transfer station (ETS) model that controls the building chilled water supply temperature by modulating a primary control valve on the district supply side. The design is based on a typical district cooling ETS described in ASHRAE's District Cooling Guide. As shown in the figure below, the building pumping design (constant/variable) is specified on the building side and not within the ETS.

Reference

American Society of Heating, Refrigeration and Air-Conditioning Engineers. (2019). Chapter 5: End User Interface. In District Cooling Guide, Second Edition and Owner's Guide for Buildings Served by District Cooling.

Revisions

• March 11, 2024, by Michael Wetter:
  Corrected wrong displayUnit string.
• April 7, 2023, by David Blum:
  Changed to partial base class for indirect so can extend to heating and cooling ETS.
• January 11, 2023, by Michael Wetter:
  Changed controls to use CDL. Changed PID to PI as default for controller.
• March 21, 2022, by Chengnan Shi:
  Update with base class partial model.
• Novermber 13, 2019, by Kathryn Hinkelman:
  First implementation.