Add unmet water heater loads EMS program #1502
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jmaguire1
changed the title
…d on some discussions with Joe. Still need to connect the EMS sensor for WH outlet temperature.
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Right now, this method calculates:
Unmet shower energy I feel is the most complete metric, since it accounts for how far off from the desired temperature you are. However, no one really has a sense for if say 2 kWh of unmet showers is too many, so this way you can calculate the % of shower time where loads are unmet. We could also add metrics related to ALL hot water usage, or all fixtures. We'd want to account for the different desired delivered temperature for appliances, but it wouldn't be hard to add metrics like Unmet Energy for all fixtures. |
shorowit
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shorowit
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Some comments while I think of it. Addressing these comments will make it easier to pull in the master branch.
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@shorowit: I just did a major refactor of this, no more duplicate code. Thanks for the suggestions. It'd be good to know if you think this is a decent way to organize things at a minimum if/when you have a chance to take a look, we're looking to use this with the 120 V HPWH relatively soon. |
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Need to compare outputs for:
The first two are currently giving very different answers (in hours), I think because of #1890. |
| .. [#] Unmet heating/cooling hours reflect the number of hours during the heating/cooling season when the conditioned space temperature deviates more than 0.2 deg-C (0.36 deg-F) from the heating/cooling setpoint. | ||
| .. [#] Unmet showers hours only account for a storage water heater running out of water and occupant discomfort; they do not account for temperature drop due to a distribution system or a tankless water heater's minimum firing rate. | ||
| Using simple hourly schedules (rather than detailed/stochastic sub-hourly schedules) may under-represent these values. |
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Need to review this once the results are making sense.
…o unmet_wh_loads # Conflicts: # BuildResidentialScheduleFile/measure.xml # HPXMLtoOpenStudio/measure.xml # ReportSimulationOutput/measure.xml
…/OpenStudio-HPXML into unmet_wh_loads # Conflicts: # HPXMLtoOpenStudio/measure.xml # workflow/tests/base_results/results_simulations_misc.csv
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Note: I pulled #1896 into here and changed the base branch. |
…o unmet_wh_loads # Conflicts: # BuildResidentialScheduleFile/measure.xml # HPXMLtoOpenStudio/measure.xml # tasks.rb # workflow/tests/base_results/results_simulations_misc.csv
…l doing some testing.
Pull Request Description
Add an EMS program for calculating unmet water heating loads. Focus is on unmet showers, but we can also calculate this for each end use if we wanted to. Addresses #1170.
Checklist
PR Author: Check these when they're done. Not all may apply.
strikethroughand check any that do not apply.PR Reviewer: Verify each has been completed.
Schematron validator (EPvalidator.xml) has been updatedtasks.rb)HPXMLtoOpenStudio/testsand/orworkflow/tests/hpxml_translator_test.rb)openstudio tasks.rb update_measureshas been run