[esp-r] Re: water tank

[Jon Hand]

Another approach is to treat the water tank as a thermal zone within a room. The
tank walls are made out of whatever the tanks really is made of and there is
something like a ideal controller that keeps the inside of the tank at about the
temperature that you expect the water to be.  The tank zone then exchanges
heat with the room via the normal convection and radiation that exists in
room surfaces.  Suggest that radiation view factors would be good to
include in such an analysis.

Note that this kind of design might be a bit strange in the summer - a
warm body in the room might cause discomfort for room occupants ;-) 

-Jon Hand
________________________________________
From: esp-r-bounces at lists.strath.ac.uk [esp-r-bounces at lists.strath.ac.uk] On Behalf Of Panos Rigos [panos.bandit at gmail.com]
Sent: 15 October 2012 12:13
To: esp-r at lists.strath.ac.uk
Subject: [esp-r]  water tank

Dear all,

I am considering of using esp-r for modeling a water tank for heat storage. However, the tank will not be insulated from the zone(s) but it will be inside the zone as extra thermal mass. So, the storage tank won't provide any water to any terminal system, it will just exchange heat with the zone from its surfaces. Any ideas on how to model such a tank in esp-r, as well as any references to literature about modeling and simulating water as part of a zone's/building's thermal mass (i.e. water walls, solar design) will be appreciated.

Greetings,

Panos