[Equest-users] Indirect Fired Domestic Hot Water Heaters

[Karen Walkerman]

I usually use #1.  You can get the energy use for DHW by doing a run with
the process load applied, and without it.

On Tue, Nov 30, 2010 at 1:51 PM, Eddie Corwin
<ecorwin at altanova-energy.com>wrote:

> I am curious to know how you (the community) have modeled indirect DHW
> heaters in the past. There are two methods that I know of, and have employed
> in the past.
>
> 1. Model the DHW load as a process load on you boiler loop. When done this
> way, you get the actual DHW energy consumption because the boilers will be
> at the proper point on the efficiency curves. The down side is that you
> don't get the proper energy breakdown in the eQuest results summary.
>
> 2. Model the DHW heater with the same curves as your boilers. When done
> this way, the results may be off because your boiler and DHW heater will be
> at different points on the efficiency curves, but you will have the proper
> breakdown in the summary.
>
> Does anyone have a better solution for modeling an indirect fired domestic
> hot water heater?
>
>
>
> -Eddie
>
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