nheeren's profile - activity

macOS slab pre-processor not working I am running energyplus on macOS and usually this works fine (enough). My typical w

I created an issue on Github: https://github.com/NREL/EnergyPlus/issues/9197

Thank you so much for this answer! I was wondering if there was as more sophisticated method to do this too. Technically

Is there a way to extract thermal mass from an energyplus model? I am comparing different building designs and would lik

The code will not work as is, because it is missing an import statement: from collections import defaultdict. See also t

How does Climate Consultant calculate the design strategies? Climate Consultant has a fantastic tool to calculate the ef

Good point, CC has knows different comfort models. My question is looking for a metric that can be used to decide if coo

What are good decision criteria for HVAC requirements for different climates? I am investigating the HVAC needs for diff

The Lesosai software suite can do that. There is a simplified tool from the same developers, which also calculates Glase

Thanks. Also nice supplementary info. Has the formula been defined in some standard?

@Ralph: Thanks! I updated the question - i hope my goal is now clearer. Climate zones are not really defined here. Good point about the solar potential. But I guess this is secondary in my case.

For a publication I am simulating a reference building for different sets of parameters and discuss the resulting differences in space cooling and heat demand. Amongst others, different locations / climates are used. Therefore I would like to shortly describe the climate data being used for the thermal simulations.

So I was thinking to provide heating degree days (HDD) and cooling degree days (CDD). However, I am unsure which is the correct algorithm to calculate those. A typical formula that can be found basically says:

If the daily mean temperature is below a threshold temperature (T threshold usually 12°C), sum up this day's temperature differences between mean (T ext, mean) and indoor temperature (T int, usually 20°C). For CDD it is the same but with a higher threshold temperature (T threshold).

Is this a good formula to use or are there other (standardized or more accepted) ones around? Would you take a different approach (than degree days)? Thanks!