[Equest-users] Boiler temperature for hybrid geothermal heat pump system

[Siliang Lu via Equest-users]

Thank you all!

Best,
Siliang

Siliang

On Tue, Aug 9, 2016 at 5:42 AM, Sharad Kumar via Equest-users <
equest-users at lists.onebuilding.org> wrote:

> Hi Siliang,
>
> I think that i was right in the discussion.
>
> The boiler set-point should be lower than the heating ground water steam
> exchanger.
>
> See the following cases:
>
> 1. The boiler set-point can be higher than the ground steam water heat
> exchanger if you apply some extra heat or fuel and you apply more than one
> fuel then it can be a hybrid boiler. So electricity can be the fuel to
> enhance the heat.
>
> 2. If the boiler is of less size then there can not be any scope to
> increase the set-point of the boiler as there can not be any extra heat
> added to the boiler as it is only again a heat exchanger.
>
> The temperature that the 360 or 370 °F i am talking about is the steam
> coming out of the earth crust.
>
> *Thanks,*
> Sharad.
>
>
> ---------- Forwarded message ----------
> From: Siliang Lu via Equest-users <equest-users at lists.onebuilding.org>
> To: Sharad Kumar <sharadcapricious at gmail.com>
> Cc: equest-users <equest-users at lists.onebuilding.org>,
> equest-users-request at lists.onebuilding.org
> Date: Mon, 8 Aug 2016 08:58:55 -0400
> Subject: Re: [Equest-users] Boiler temperature for hybrid geothermal heat
> pump system
> Hi Sharad,
>  Thanks for your reply.
>  My design is ambient geothermal heat pump system. The water loop
> temperature ranges between 55-85F and the ground temperature is not so high
> as 360-370F. What I am wondering is that if the boiler setpoint could be
> much higher than ground heat exchanger setpoint if the size of boiler is
> much smaller than that of GHX? Thanks a lot!
>
> Have a great day!
>
> All the best,
> Siliang
>
>
>
> _______________________________________________
> Equest-users mailing list
> http://lists.onebuilding.org/listinfo.cgi/equest-users-onebuilding.org
> To unsubscribe from this mailing list send  a blank message to
> EQUEST-USERS-UNSUBSCRIBE at ONEBUILDING.ORG
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.onebuilding.org/pipermail/equest-users-onebuilding.org/attachments/20160809/c97bca64/attachment-0005.htm>