i have a building with heated floor and when i run the simulations the temperature and humidity are not constant in the same summer/winter week design. so in the summer i have temperatures between 20-40 deg and a humidity between 40-70% and in the winter the temperatures are between 19-20 deg and humidity between 9-15%
it sounds like you have a heating setpoint of 20, but either no cooling setpoint or no cooling equipment assigned to your zones, which means during cooling season temperatures will float between 20-40. likewise, if you don't have any cooling equipment there's no way to control humidity during cooling season. if you put cooling equipment into your zones, you'll also have to assign a humidistat (and if you're using an air loop, use a humidity-related setpoint manager) in order to control for humidity.
Thanks for the reply! For the project I have a heating and cooling system in the floor and the heat part I have in the program, but I do not know how to add the cooling part and I think this is the main cause of the big temperature differences.
does the floor cooling system have chilled water? if so, you'd need to have a chilled water plant connected to it. if you send me the designbuilder model i can take a look.
yes it has, but the idea is that it does not let me put the cooling system in the floor and also the underfloor heating (pipes). so I put the cooling system in the ceiling, although that's not what I need and anyway it generates too many errors. I would like to send the model but I do not know how, so if you have an ideea i will do it
i'm not sure about cooling in the floor, but designbuilder 5.2 has a "radiant surface" component you could try. or look here for advice on how to model chilled ceiling. you may then have to do a workaround and/or some post processing to get it to represent the differences in stratification properly.
Asked: 2018-03-09 06:57:58 -0500
Seen: 369 times
Last updated: Mar 13 '18
