Transcript Building Energy Modeling – The Future

FLORIDA SOLAR ENERGY CENTER
Creating Energy Independence Since 1975
Compliance Software Tool
Approval Technical Assistance
Manual
Florida Building Code, Energy Conservation, 5th Edition (2014)
Overview
 Review TAM & Standards
 Compliance Methods
 Formulate Test Cases
 Evaluation Procedure
 Vendor’s Requirement
 Reporting Requirements
2
7/7/2015
Project Summary


Review and Update the TAM per the Florida Building Code:
Energy Conservation, 5th Edition
Formulate New Test Cases & Evaluation Procedure for each
Compliance Method









Six Test Cases to use for Residential Prescriptive Methods
Five Test Cases for Residential Performance e-Ratio
Sixteen Test Cases for Commercial Performance Method
Six Test Cases for Commercial Prescriptive Method
One Test Case for Envelope Trade-Off Method
Each Commercial Test is Evaluated for Two Climate Zones
Update Existing Test Cases (only for residential)
Provide Standard Reference Test Results
Define Reporting and Submittal Requirements
3
7/7/2015
1. Introduction & Overview
of Process
2. Types of Approval
3. Vendor Requirements
4. User’s Manual and Help
System Requirements
5. Managing User Inputs
6. Residential Energy
Compliance Software
Programs
7. Commercial Energy
Compliance Software
8. Alternative Compliance
Software Test
9. Appendix
4
7/7/2015
Code Compliance Options
Residential




Prescriptive R-value Method
Prescriptive U-factor Alternative Method
Prescriptive Total UA Alternative Method
Performance Method
5
7/7/2015
Code Compliance Options
Commercial Buildings
 FEC Prescriptive Method
 FEC Total Building Performance
Method
 ASHRAE Prescriptive Method
 ASHRAE Envelope Trade-off Method
 ASHRAE Energy Cost Budget Method
6
7/7/2015
Technical Approach & Work Done
Commercial: Activities Overview






Review of Existing Manual, Applicable
Standards, COMNET, and Florida Building Code,
Energy Conservation, 5th Edition (2014)
Identify the Code Compliance Methods
Requirements
Formulate New Test Cases for Each Method
Create Standard Reference Design and
Performance Requirements
Design Evaluation Procedure
Define Reporting and Submission Requirements
7
7/7/2015
Commercial Evaluation Approach
Compliance Options – Test Cases
 Prescriptive (FEC and ASHRAE)
 Two Prototype Building (Six Test Cases)
 Envelope Trade-off (ASHRAE)
 One Prototype Building (One Test Case)
 Performance (FEC and ASHRAE)
 Prototype Buildings (Sixteen Test Cases)
Software Vendor’s enters the proposed building inputs to their software and
generate the standard reference building requirements and envelope
performance factors. Record the results into the evaluation spreadsheets.
8
7/7/2015
Commercial Evaluation Approach
Test Cases: Prototype Building Summary
 “CommercialCodeComplianceTestSuite.xls”
Test Suite
Buildings
Application
Number of
Floors
Total Floor Size, ft2
A1
Office
1
22,500
A3
Office
3
67,500
A20
Office
20
450,000
B1
Retail, Supermarket
1
40,000
C1
Manufacturing, Warehouse
1
160,000
D7
Mixed use: Retail, Office, and Multifamily
7
179,400
E1
Mixed use: Retail, and Warehouse
1
90,000
The spreadsheet contains the proposed prototype building inputs.
9
7/7/2015
Prototype Building A1: Office
Test Suite
Buildings
A1
Application
Office
10
Number of
Floors
Total Floor Size, ft2
1
22,500
7/7/2015
Prototype Building A3: Office
Test Suite
Buildings
A3
Application
Office
11
Number of
Floors
Total Floor Size, ft2
3
67,500
7/7/2015
Prototype Building A20: Office
Test Suite
Buildings
A20
Application
Office
12
Number of
Floors
Total Floor Size, ft2
20
450,000
7/7/2015
Prototype Building B1: Retail, Supermarket
Test Suite
Buildings
B1
Application
Retail, Supermarket
13
Number of
Floors
Total Floor Size, ft2
1
40,000
7/7/2015
Prototype Building C1: Manufacturing, or Warehouse
Test Suite
Buildings
C1
Application
Manufacturing, Warehouse
14
Number of
Floors
Total Floor Size, ft2
1
160,000
7/7/2015
Prototype Building D7: Mixed Use
(Retail, Office & Multi-Family)
Test Suite
Buildings
D7
Application
Mixed use: Retail, Office, and Multifamily
15
Number of
Floors
Total Floor Size, ft2
7
179,400
7/7/2015
Prototype Building E1: Mixed
Use (Retail and Warehouse)
Test Suite
Buildings
E1
Application
Mixed use: Retail, and Warehouse
16
Number of
Floors
Total Floor Size, ft2
1
90,000
7/7/2015
Commercial Evaluation Approach
Results & Evaluation
 Prescriptive (FEC and ASHRAE)
 CommercialPrescriptiveMethodsResults.xls
 Envelope Trade-Off (ASHRAE)
 CommercialEnvelopeTradeOffMethodResults.xls
 Performance (FEC and ASHRAE)
 CommercialPerformanceMethodsResults.xls
Each workbook contain expected results per the standard reference design
requirements and performance results and a place holder for the Vendor’s
software generated results for side-by-side comparison.
17
7/7/2015
Commercial: Prescriptive Options
18
7/7/2015
Commercial: Performance Options
19
7/7/2015
Commercial: Envelope Trade-Off
20
7/7/2015
ASHRAE Standard 140 tests
for Commercial software
*For software supporting Performance Based
Compliance:
*ASHRAE Standard 140 Test Certification
*The compliance software provider shall
submit a certificate to the commission
indicating that the code compliance software
engine meets the requirements of the
Standard 140 tests.
Technical Approach & Work Done
Residential: Activities Overview






Review of Existing Manual, Applicable
Standards, and 2014 Florida Building Code
Identify Compliance Methods Requirements
Formulate New Test Cases & Updated Existing
Ones
Create Standard Reference Design &
Performance Requirements
Design Evaluation Procedure
Define Reporting & Submission Requirements
22
7/7/2015
Residential: Validation Approach
Prescriptive Methods



R-value Method
U-factor Alternative Method
Total UA Alternative Method
Six single family detached home designs were formulated for testing the prescriptive methods. Each
test case is evaluated using the three methods. The test methods, assumptions, evaluation results and
procedures are summarized in a standalone spreadsheet (Since June 15, 2014 we combined house
description, UA-Calculation, and Residential Prescriptive Compliance Test 2014).
23
7/7/2015
Prescriptive: House Description
24
7/7/2015
Prescriptive: UA-Calculation
25
7/7/2015
Prescriptive: U-Calculation
26
7/7/2015
Prescriptive: R-Value Validation
 Software Vendor enter
their results in the yellow
cells
 Selects dropdown menu
for most entries
 Must enter the software
calculated average
Fenestration U-Factor
and SHGC
 List of mandatory
requirements included

For mandatory they can
choose “Not Part of
Software”
 If the software calculates
all the expected results
the “Test Results for
Software” will “PASS”
27
7/7/2015
Prescriptive: U-Factor Validation
 Software Vendor enter
their results in the yellow
cells
 Selects dropdown menu
for most entries
 Must enter the software
calculated average
Fenestration U-Factor
and SHGC
 List of mandatory
requirements included

For mandatory they can
choose “Not Part of
Software”
 If the software calculates
all the expected results
the “Test Result ” will
“PASS”
28
7/7/2015
Prescriptive: Total UA Validation
 Software Vendor enter their
results in the yellow cells
 Must enter the software
calculated total UA for the
proposed and standard
reference home
 We allow 2% Range for
the total UA calculation
knowing that software
may use different
properties for
construction materials
 List of mandatory
requirements included

For mandatory they can
choose “Not Part of
Software”
 If the software calculates all
the expected results the
“Test Result ” will “PASS”
29
7/7/2015
Residential: Validation Approach
Performance Method
 The five test cases were updated to test vendor’s software
capability of generating the standard reference design from
proposed design building only
 HVAC Equipment Performance Tests
 Hot Water System Performance Tests
 Duct Distribution System Efficiency Tests
 Five new tests were created to evaluate code compliance using
e-Ratio method
30
7/7/2015
Performance Method: e-Ratio Test
Test Description (New test cases created)
* Case L130A-01: Using the HERS BESTEST L130 case for Orlando, create a
3-bedroom Proposed Home containing the following equipment:
 Heating system – electric HP with HSPF = 7.7
 Cooling system – electric A/C with SEER = 13.0
 Hot Water – 40 gal electric with EF = 0.92
 Equipment, Ductwork located inside the conditioned space and have zero
(0) air leakage.
* Case L100A-02: Identical to Case L130A-01 except that the hot water heater
is changed to a tankless natural gas with EF = 0.82.
* Case L100A-03: Identical to Case L130A-01 except that the space heating
system is changed to a natural gas furnace with AFUE = 78%.
* Case L100A-04: Identical to Case L130A-01 except that the space heating
system is changed to a high efficiency HP with SEER=17 and HSPF = 10.
* Case L100A-05: Case L130A-01 except the space heating system is
changed to a high efficiency natural gas furnace with AFUE = 96%.
31
7/7/2015
Performance: e-Ratio Validation
Acceptance Criteria:
 The reported Reference Home End Use Loads (REULs) vary by less
than 0.2% across all cases.
 The difference between the e-Ratios calculated by the software tool and
the e-Ratios calculated by the results spreadsheet provided by the
Florida Building Commission is less than 0.5% for all cases.
32
7/7/2015
Residential: Validation Approach
Performance Method: Results Workbooks







2014_Florida_AutoGen_results-form.xls
DHW_results-form.xls
DSE_results-form.xls
FL_eRatio-results_form.xls
FL-HERS_BESTEST_results-form.xls
HERS_BESTEST_results-form.xls
HVAC_results-form.xls
33
7/7/2015
Submission Cover Sheet
34
7/7/2015
Thank you
Questions?