[Equest-users] Two Primary and one secondary loop for 2-pipe distribution system

Vipul Babriya vipulbabriya at aol.com
Thu Dec 8 09:24:05 PST 2011

Hello Everyone,

I am modeling very large office building, which is having central plant with chillers and heat exchangers. The heat exchangers provide hot water to the 2-pipe loop via two pumps, while the chillers provide chilled water to 2-pipe loop via four chilled water pump. The 2-pipe distribution supplies chilled and hot water to the AHUs and FCUs located different zones in the entire facility.

The 2- pipe distribution system have no pump. The loop operates year around based on heating and cooling requirement. Since, there is no pump in 2-pipe distribution system, it uses primary loop pumps (Chilled water pumps in summer and hot water pump in winter). 

Is there anyway i can model two primary loops and one secondary loop (2-pipe) in the eQUEST?


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