CBECC-Res / Tickets / #1052 UEF water heaters in EAA & correct standard design comparison

Description has changed:

Diff:

--- old
+++ new
@@ -1,3 +1,3 @@
 On E+A+A projects, CBECC won't let the user input a UEF rated water heater of any type when it's existing..  This should probably be updated during your team's E+A+A work since at some  point in the near future a UEF will be an existing water heater for some projects.

-Should this also apply to 2016?
+This applies to both 2016 and 2019

Version: 2019 --> 2016&2019

Ken Nittler - 2018-10-08

assigned_to: Larry Froess --> Scott Criswell
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Ken Nittler - 2019-03-04

status: New --> 20%Done
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Scott Criswell - 2019-07-09

Priority: Medium --> High

Milestone: 2019.1.0 --> 2019.next
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Dee Anne Ross - 2019-08-06

Priority: High --> Critical

Milestone: 2019.next --> 2019.2.1
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Dee Anne Ross - 2019-11-19

Attachments has changed:

Diff:

--- old +++ new @@ -1,2 +1,4 @@ +AlterStorage.ribd19 (53.9 kB; application/octet-stream) +AlterTankless95.ribd19 (54.2 kB; application/octet-stream) EAA_UEF.PNG (17.5 kB; image/png) EAA_UEF.ribd19 (50.4 kB; application/octet-stream)
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Dee Anne Ross - 2019-11-19

The standard and proposed are using different DHW calculations. So what should be 0 compliance is a penalty because the standard design for an altered 0.81 UEF is a 0.82 EF; and for a 0.60 UEF consumer storage the standard design is 0.60 EF. Danny Tam adds that the problem is using the new gas model compared against the old. Existing water heaters should use the new gas model too. Allow old EF as an input, and then internally CBECC convert the EF into UEF and use the new gas model. [NOTE: was going to edit comment added earlier today, but didn't see it. This combines that comment with Danny's.]

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Dee Anne Ross - 2019-11-21

summary: Allow UEF water heaters for existing in EAA --> UEF water heaters in EAA & correct standard design comparison

Milestone: 2019.2.1 --> 2019.2.0
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Scott Criswell - 2020-08-14

status: 20%Done --> Fixed
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Scott Criswell - 2020-08-14

ruleset mods checked into SVN @ r1907

changed conditional enumerations to allow all heater types for Existing heaters

altered rule to prevent forcing reset of old heater types to new ones for heaters w/ no valid Status (Ex/Alt/New) (typically due to not being assigned)

removed error check preventing analysis for models w/ Existing heaters of newer (UEF) types
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Dee Anne Ross - 2020-08-17

status: Fixed --> Verified
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UEF water heaters in EAA & correct standard design comparison

Residential California Energy Commissiom Performance Compliance

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#1052 UEF water heaters in EAA & correct standard design comparison

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