(Effective Until July 1, 2010.)
WAC 51-11-1008
Section 1008 Air infiltration.
1008.1 General: Tables 10-8 and 10-8A list effective air
change rates and heat capacities for heat loss due to
infiltration for Group R Occupancy.
Estimated seasonal average infiltration rate in air
changes per hour (ACH) is given for standard air-leakage
control (see section 502.4 of this code for air leakage
requirements for Group R Occupancy). The effective air-change
rate shall be used in calculations for compliance under either
the Component Performance or Systems Analysis approaches.
Heat loss due to infiltration shall be computed using the
following equation:
| Qinfil = ACHeff* HCP |
| where: |
Qinfil |
= |
Heat loss due to air infiltration |
|
ACHeff |
= |
the effective air infiltration rate in Table
10-8 |
|
HCP |
= |
the Heat Capacity Density Product for
the appropriate elevation or climate zone
as given below. |
TABLE 10-8
ASSUMED EFFECTIVE AIR CHANGES
PER HOUR
| Air-Leakage |
Air Changes per Hour |
| Control Package |
Natural Effective |
| Standard |
0.35 0.35 |
TABLE 10-8A
DEFAULT HEAT CAPACITY/DENSITY PRODUCT FOR
AIR
| Zone |
Average Elevation |
Heat Capacity/Density |
| 1 |
Mean Sea Level |
0.0180 Btu/h•°F |
| 2 |
2000 |
0.0168 Btu/h•°F |
| 3 |
3000 |
0.0162 Btu/h•°F |
[Statutory Authority: RCW 19.27A.025, 19.27A.045. 01-03-010,
§ 51-11-1008, filed 1/5/01, effective 7/1/01; 98-03-003, §
51-11-1008, filed 1/8/98, effective 7/1/98. Statutory
Authority: RCW 19.27A.020 and 1990 c 2. 91-01-112, §
51-11-1008, filed 12/19/90, effective 7/1/91.]
(Effective July 1, 2010.)
WAC 51-11-1008
Section 1008 Air infiltration.
1008.1 General: Tables 10-8 and 10-8A list effective air
change rates and heat capacities for heat loss due to
infiltration for single-family residential.
Estimated seasonal average infiltration rate in air
changes per hour (ACH) is given for standard air-leakage
control (see section 502.4 of this code for air leakage
requirements for single-family residential). The effective
air-change rate shall be used in calculations for compliance
under either the Component Performance or Systems Analysis
approaches.
Heat loss due to infiltration shall be computed using the
following equation:
| Qinfil = ACHeff* HCP |
| where: |
Qinfil |
= |
Heat loss due to air infiltration |
|
ACHeff |
= |
the effective air infiltration rate in Table
10-8 |
|
HCP |
= |
the Heat Capacity Density Product for
the appropriate elevation or climate zone
as given below. |
TABLE 10-8
ASSUMED EFFECTIVE AIR CHANGES
PER HOUR
| Air-Leakage |
Air Changes per Hour |
| Control Package |
Natural Effective |
| Standard |
0.35 0.35 |
TABLE 10-8A
DEFAULT HEAT CAPACITY/DENSITY PRODUCT FOR AIR
| Zone |
Average Elevation |
Heat Capacity/Density |
| 1 |
Mean Sea Level |
0.0180 Btu/h•°F |
| 2 |
2000 |
0.0168 Btu/h•°F |
| 3 |
3000 |
0.0162 Btu/h•°F |
[Statutory Authority: RCW 19.27A.025, 19.27A.045. 10-03-115,
§ 51-11-1008, filed 1/20/10, effective 7/1/10; 01-03-010, §
51-11-1008, filed 1/5/01, effective 7/1/01; 98-03-003, §
51-11-1008, filed 1/8/98, effective 7/1/98. Statutory
Authority: RCW 19.27A.020 and 1990 c 2. 91-01-112, §
51-11-1008, filed 12/19/90, effective 7/1/91.]
NOTES:
Reviser's note: Notice of Objection: The Joint Administrative Rules
Review Committee (Committee) finds that, in adopting the 2009 proposed changes
to the State Energy Code, Chapter 51-11 WAC, on November 20, 2009, the State
Building Code Council (Council) failed to comply with all requirements of the
law and failed to adequately respond to the Committee's request for additional
economic impact and cost-benefit analyses prior to adoption.
On October 1, 2009, the Committee found that the Small Business Economic
Impact Statement (SBEIS) for the proposed changes filed with the Code Reviser
failed to comply with all requirements of law. The Committee requested that
the Council conduct a cost-benefit analysis pursuant to RCW 34.05.328 and
amend the SBEIS to provide additional economic impact information, including
an estimate of the number of jobs that would be created or lost as a result of
compliance with all the proposed rules, as required by RCW 19.85.040 (2)(d).
The Council provided the Committee with information and data on November
18, 2009. On December 2, 2009, the Committee found that the Council failed to
adequately respond to the Committee's request for additional data.
Specifically, the Committee found that the Council failed to amend the SBEIS
to (a) estimate the number of jobs that would be created or lost as a result
of compliance with the proposed changes; and (b) support the SBEIS with a
detailed and rigorous costs analysis of the cumulative impact of all the
changes. In addition, the Committee found that the Council failed to provide
the Committee with a cost-benefit analysis of the proposed changes and
pursuant to the requirements of RCW 34.05.328.
The Committee strongly supports a process that makes thoughtful and
informed progress towards changes that result in improved energy efficiency in
our buildings, wherever practicable. While the Council worked diligently, it
is the opinion of the Committee that the Council did not fully develop and
consider the economic impacts and costs versus benefits of these significant
changes to our Energy Code. Furthermore, it is the opinion of the Committee
that the Council and the Legislature need this information to fully evaluate
the value, impacts, and consequences of the proposed codes, with due diligence
to their respective fiduciary responsibilities, in order to create the best
informed public policy.
As a result, the Committee recommends that the Governor suspend the
adoption and implementation of the changes to the Energy Code, Chapter 51-11
WAC, adopted by the Council on November 20, 2009, until such time as a more
adequate analysis has been completed and considered by the appropriate bodies.
For all of the above stated reasons, the Committee objects to the
changes to the State Energy Code, Chapter 51-11 WAC, that were adopted by the
Council on November 20, 2009, and hereby directs the Code Reviser, pursuant to
RCW 34.05.640(4), to publish this Notice of Objection in the Washington State
Register and along with any publication in the Washington Administrative Code
of changes to Chapter 51-11 WAC that were adopted by the Council in 2009 and
filed with the Code Reviser.