[TRNSYS-users] Combined solar system

[David Bradley]

Ivan,
> I'm  trying to simulate a combined solar system for domestic hot water 
> and for heating. The auxiliary source is a wood boiler. There is some 
> specific type to simulate the wood boiler?
A paper on the development of a sophisticated boiler model was presented 
at the IBPSA Building Simulation 2009 conference last summer. 
"Comparison of Different Approaches for the Simulation of Boilers Using 
Oil, Gas, Pellets, or Wood Chips." That model may be more complex than 
what you are looking for so I think what you might do is look at the 
higher heating value of your fuel source and from that, determine the 
efficiency of the boiler, then use either Type6 or Type700 (from the 
TESS HVAC Library).
> I would like to connect this power system to TRNBUILD file, to analyse 
> if it's acceptable for building heating and domestic hot water needs. 
> For domestic hot water needs i'm trying to add some DHW profiles (with 
> 1 hour simulation step). How do i get to import a DHW profile matrix 
> with 1 hour step DHW loads?
For the space heating, I would define either a VENTILATION type or a 
radiant floor in your building (depending on how you plan to deliver the 
heat to the space) and define the appropriate inputs to Type56. You'll 
then pass the heated water from the boiler to a splitter that breaks off 
some of the flow to your DHW system and sends the rest either to the 
radiant floor, to a fan coil, etc.

Best,
 David

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Thermal Energy System Specialists (TESS), LLC 
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