Andy Tindale's profile - activity

You can obtain design year weather data for a range of future climate scenarios from the DesignBuilder Climate Analytics

You can find a help page with some tips on editing and viewing epw files here: https://designbuilder.co.uk/cahelp/Conte

You don't need the Scripting module to generate AFN linakge flow rates. Simply request to "Store surface output" and "St

There is a confirmed bug in EnergyPlus related to use of multiple semi-transparent shading surfaces reported here: http

Hi Roya, I haven't seen your model but wonder whether the extra summer heat loss could be caused by internal temperature

@Ruben it looks like you may be using an evaluation version of DesignBuilder in which case zones and other EnergyPlus in

It seems likely that the reduced mechanical ventilation rate is caused by some sort of control. The best way to understa

DesignBuilder v4.7 daylighting calculations don't take into account the illuminance/irradiance data in the epw file. By

From what I can see in the above graphs Aaron is exactly right. The current version of DesignBuilder Results Viewer is n

From what I can see in the above graphs Aaron is exactly right. The current version of DesignBuilder Results Viewer is n

Hey Charlie, we've been successfully using ASHP systems in DesignBuilder. Provided the control settings are made correctly it should work well. You may find the DB v5 help and notes useful. As mentioned in my original reply getting the capacity of the system right is important and as the help notes say the setpoints must all be set up right.

Looking back at Nancy's ticket on our support desk she was able to resolve the issue by re-importing the ASHP HVAC template using a production release version.

Unfortunately I'm not familar with the OS HVAC GUI so can't help with that.

In DesignBuilder you can model a GSHP system most easily by switching to using the Detailed HVAC model option, creating the building model and then loading one of the HVAC templates (e.g. GSHP Water to Water HP, Heated Floor and Chilled Beams) as a starting point.

You can then load manufacturer's heat pump and ground loop heat exchanger data based on the building heating and cooling loads. The simple worked example in the DesignBuilder online help explains in more detail:

http://www.designbuilder.co.uk/helpv5....

It shows a simple way to set up a heated floor and chilled beam GSHP system and size the components involved.

If you post your model I'll have a look to see if anything jumps out as being wrong. I don't know if attachments are allowed on unmet hours but if not then please send it to the DB support desk.

ASHP systems can't be autosized so you should check the rated heating capacity of the air to water heat pump coil. The default value is designed for a fairly large building (40kW) and you may need to decrease this. I don't think that oversizing will cause this problem though.

Did you use the "ASHP Air to water Heat Pump convector" template? This works for me without modification when applied to the test house that comes with DB.