Does anyone have any information if any DOE Prototype building uses Radiator for heating purpose?
I am trying to model radiator heating and thought it would be a good starting point.
TIA
@Rwadhwa910, you seem to be working mainly with OpenStudio (from your previous posts). A few suggestions:
OpenStudio-Standards' model_add_hvac method has an option to add baseboard heating (i.e. radiators), which relies on a few other methods:
OpenStudio-Standards relies on these methods (and/or many others) to generate US DOE Prototype HVAC systems. This is a nice point to start from, especially if interested in interfacing with OpenStudio's API. For non-SDK users, the coded instructions remain useful (e.g. which components are needed, in which order they should be added to a model, how to link them).
Alternatively, you can go through the OpenStudio-resources repository. In this basic example, a baseboard is added to 1 zone, fed by a hot water loop (complete with boiler, pump, sizing parameters, etc.). Again, in-line comments and coded instructions are useful (what's needed, in what sequence, etc.). Here however, you have the added benefit of looking up the generated .osm file, via a text editor or the OpenStudio Application (e.g. run a simulation, check the generated .idf file, etc.). The repository holds several other instances of hot water plant loops.
Hi Denis, thanks for the reply, I attached a picture above in the question and it is a Baseboard Conv water instead of baseboard radiator.Its not the same right.
You can also see on this link https://drive.google.com/file/d/1Tl6g...
If you're after larger units (e.g. traditional cast iron radiators, Runtal panels), then the "OS:ZoneHVAC:Baseboard:RadiantConvective:Water" object would be more suitable (where you can set the fraction of radiant heat). It ultimately depends on how one defines "radiator". Cheers.
So I am looking to model residential radiators units which one would be the correct one , I am using Zone HVAC Baseboard Rad Conv Water and putting it on autosize, but I am not able to meet the setpoint when I try to hardsize the capacity , I am running into convergence error, Severe ** CheckWarmupConvergence: Loads Initialization, Zone="L01-1 BR 10" did not converge after 25 warmup days Increasing warmup days to 50 is not helping , so I dont know whats the probelm, what will you recommend to use if I am modeling residential radiator units?
Thanks!
Similar issues (and suggestions moving forward) here and here. Ensure the defaulted parameters (Rated Average Water Temperature at 87.78C, Rated Water Mass Flow Rate at 0.063 kg/s) are compatible with the Plant/Loop parameters elsewhere. I'd then try loosening the Coil Convergence Tolerance parameter.
Are you seeing these CheckWarmupConvergence errors only for the RadiantConvective model (yet not the Convective one)? If so, you can always fall back onto the latter. Depending on the objective (e.g. calibrating model vs energy bills, vs detailed thermal comfort assessment), it may not matter much ...
ok thanks, i used the one with Zone HVAC Baseboard Conv Water and it worked. Thanks!
Asked: 2023-11-30 13:32:23 -0500
Seen: 158 times
Last updated: Dec 17 '23
