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How does ResStock calculate conditional probability distributions in housing_characteristics tsv files?

asked 2020-06-25 15:38:51 -0500

sashadf1's avatar

updated 2021-03-12 03:25:27 -0500

For reference I am using ResStock v2.2.4 and OpenStudio/PAT v2.9.0, with EnergyPlus v9.2.

I am trying to model a particular community in Georgia. I have 3 different AMY EPW files; a 2008 EPW file for Blairsville GA, a 2008 EPW file for Andrews NC, and a 2008 EPW file for Franklin NC.

The options I have determined to be candidates in Location.tsv in housing_characteristics directory are Asheville AP (NC), Athens AP (GA), and Chattanooga AP (TN), based on their proximity to the desired location I am modelling.

In order for PAT to recognize the EPW files, they were renamed before being zipped and uploaded to dropbox to create direct download links.

Asheville Location TSV configuration --> 0996216_US_NC_Buncombe_37021_0-20000-0-72315_35.45_-82.54_NSRDB_2.0.1_AMY EPW file name.

Chattanooga Location TSV configruation --> 0939546_US_TN_Hamilton_47065_0-20000-0-72324_35.05_-85.22_NSRDB_2.0.1_AMY EPW file name.

Athens Location TSV configuration --> 0979938_US_GA_Clarke_13059_0-20000-0-72311_33.97_-83.34_NSRDB_2.0.1_AMY EPW file name.

If I ran two simulations, all else held equal, I would get different results depending on what configuration I was using in Location TSV. I noticed that Geometry Foundation Type.tsv and Heating Fuel.tsv had Dependency=Location, meaning that their conditional probability distributions are conditional on whatever value/configuration is in Location.tsv. When I changed these conditional probability distributions to possess the same values, I would get the same results.csv output.

For example, see:

Geometry Foundation Type TSV change

Heating Fuel TSV before edit

Heating Fuel TSV after edit

How does ResStock calculate the probability distributions seen above for Heating Fuel and Foundation Type? I would like to get a probability distribution that is representative of my area.

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answered 2021-07-26 14:48:01 -0500

updated 2021-07-26 14:49:21 -0500

As of 2.4.0, all of the tsv files have comments at the bottom listing the source(s) and assumptions for the probability distribution data.


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answered 2021-07-26 14:43:34 -0500

sashadf1's avatar

updated 2021-07-26 14:43:52 -0500

The probability distributions use data from the Residential Energy Consumption Survey (RECS) which is administered by the EIA.

The ResStock team has queried the RECS data to create the distributions; how exactly that is done I do not know.

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Asked: 2020-06-25 15:38:51 -0500

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Last updated: Jul 26 '21