CIAPR Convention 2010 August 5, 2010

Energy Affairs Administration

Government of Puerto Rico

Agenda Background Information

ARRA and the Governor’s Assurance

Overview of Energy Codes

IECC 2009 Structure

Climate Zone

Residential Energy Code

Residential Analysis

Commercial Energy Code

Overall Benefits

Puerto Rico Energy Code Status

Professional Education Support

Measurement of Implementation

Importance of Energy Codes

Background Information First Puerto Rico Energy Code

First code to be used in Puerto Rico, was adopted on December 19, 1978.

Was established following the energy crisis of the 1970’s.

The code was based on ASHRAE Standard 90.75 & 90.75R, and the “Model Energy Code” amended for the local climate.

Background Information Final Adoption of UBC 1997

On November 23, 1999 new amendments where approved finalizing the emergency regulation process, these amendments where placed in effect on December 8, 1999. On the amendments an energy code was not specified, and placing Puerto Rico in violation of 42USC6833.

It’s been 11 years since the adoption of the UBC 1997 and Puerto Rico has yet to implement a building energy code.

American Recovery and Reinvestment Act 2009

Under the 2009 American Recovery and Reinvestment Act (ARRA), the adoption of energy conservation codes is explicitly stated within their scope in energy related matters.

Energy Efficiency and Renewable Energy $33 Millions - Energy Efficiency and Conservation Block Grants

(EECBG)

$48 Millions - Weatherization Assistance Program (WAP)

3.7 Millions – State Energy Efficiency Appliance Rebate Program (SEEARP)

$37 Millions - State Energy Program (SEP)

Implementation of Building Energy Code

Building Energy Conservation Codes Residential Buildings

Required by ARRA 2009 Energy Savings equal or greater than

International Energy Conservation Code 2009

Commercial Buildings

Required by ARRA 2009 Energy Savings equal or greater than

ASHRAE 90.1 – 2007 A plan for the jurisdiction achieving

compliance with the building energy code or codes within 8 years of the date of enactment of this Act in at least 90% of new residential and commercial building space.

ARRA Energy – Governor’s Assurance

What are Energy Codes? Energy Codes are divided into two, which are Residential

and Commercial Buildings.

Residential Codes (IECC 2009) Focus is on building envelope

Ceilings, walls, windows, floors, foundations Sets insulation levels, window U-factors and solar heat gain

coefficients Infiltration control - caulk and seal to prevent air leaks

Ducts – seal and insulate Limited space heating, air conditioning, and water heating

requirements Federal law sets most equipment efficiency requirements, not the

energy codes. No appliance requirements Lighting equipment – 50% of lamps to be high-efficacy lamps

What are Energy Codes? Commercial Codes (ASHRAE 90.1-2007)

Building Envelope (i.e. insulation, window thermal properties, door thermal properties, etc.)

HVAC Systems (i.e. sizing, control strategies, commissioning, outdoor air, etc.)

Water Heating (i.e. sizing, insulation requirements, water circulation, etc.)

Power (i.e. circuit sizing voltage drop)

Lighting (i.e. lighting power levels, lighting efficiency)

Other (i.e. electric motors)

Structure of the IECC 2009 Chapter 1 Administrative

Chapter 2 Definitions

Chapter 3 Climate Zones

Chapter 4 Residential Energy Efficiency

Chapter 5 Commercial Energy Efficiency

Chapter 6 Referenced Standards

Climate Zones-IECC 2009

Climate Zones – Puerto Rico IECC 2009 treats Puerto Rico as Climate Zone 1

ASHRAE 90.1-2007 treats Puerto Rico as Climate Zone 1A except: Cayey – 2B

Barranquitas – 2B

New climate zone definitions:

Residential – All Zone 1

Commercial

Below 1,000 ft. elevation above mean sea level Zone 1

For ASHRAE/IESNA 90.1-2007 it shall be Zone 2

At or above 1,000 ft. elevation above mean sea level Zone 2

For ASHRAE/IESNA 90.1-2007 it shall be Zone 2A

Residential Energy Efficiency

CLIMATE ZONE

FENESTRATION

U-FACTOR

SKYLIGHT

U-FACTOR

GLAZED FENESTRATION

SHGC

CEILING

R-VALUE

WOOD FRAME WALL

R-VALUE

MASS WALL

R-VALUE

FLOOR R-

VALUE

BASEMENTWALL

R-VALUE

SLAB R-VALUE & DEPTH

CRAWL SPACE

WALL R-VALUE

1 1.20 0.75 0.30 30 13 3 / 4 13 0 0 0

Table 402.1.1 Insulation and Fenestration Requirements by Component

CLIMATE ZONE

FENESTRATION

U-FACTOR

SKYLIGHT

U-FACTOR

GLAZED FENESTRATION

SHGC

CEILING EQUIVAL

ENT

R-VALUE

WOOD FRAME WALL

R-VALUE

MASS WALL

R-VALUE

FLOOR R-

VALUE

BASEMENTWALL

R-VALUE

SLAB R-VALUE & DEPTH

CRAWL SPACE

WALL R-VALUE

1 1.20 0.75 0.40 15 13 NR NR NR NR NR

Roof Insulation Due to the tropical climate, the main concern on

the island is the reduction of heat gain due to solar radiation, specially through the roof which is the area of contact of highest impact.

The IECC 2009 establishes an R-Value of R-30.

An equivalent roof R-Value of R-15 is acceptable for Puerto Rico, due to its tropical climate.

A “Cool Roof” application is recommended to obtain the proposed R-Value.

Cool Roof Application (High Albedo Roofs)

Delivers a high solar reflectance and a high thermal emittance.

This application must be tested and certified by the Cool Roof Rating Council.

Window SHGC SHGC - Solar Heat Gain

Coefficient

Climate Zones 1 0.30 or lower (area-weighted

average)

Cannot exceed 0.50 even if performance path trade-offs are used (area-weighted average)

National Fenestration Rating Council (NFRC) tested

Solar Heat Gain Coefficient

Window Overhangs Adopting NFRC certification may represents a significant

challenge towards our current window manufacturing industry.

To achieve compliance for vertical fenestration we proposed the use of window overhangs. The SHGC of the installed windows shall be reduced by using multipliers based on the projection factor in order to achieved the required SHGC (0.40).

Projection Factor

SHGC Multiplier (All other

orientations)

SHGC Multiplier (North-Oriented)

>0-0.10 1.00 1.00

>0.10-0.20 0.91 0.95

>0.20-0.30 0.82 0.91 >0.30-0.40 0.74 0.87

>0.40-0.50 0.67 0.84

>0.50-0.60 0.61 0.81

>0.60-0.70 0.56 0.78

>0.70-0.80 0.51 0.76

>0.80-0.90 0.47 0.75

>0.90-1.00 0.44 0.73

SHGC Multipliers for Permanent Projections

Projection Factor

SGHC

SGHC402.1.1 Tablein required

Multiplier

EquipmentSHGC

Service Water Heating All Low-Rise Residential Buildings, as defined in IECC

2009.

Shall be provided to only use solar water heaters.

Equipment shall be certified by the Puerto Rico Energy Affairs Administration.

Result in estimated savings of approx. 30% on a typical electricity bill for a social interest unit.

Represents high energy savings, while achieving attractive return of investment.

Solar Water Heater Implementation

Electric Water Heater (Tank)

Water Heating = 4,225kW-hr/year

Energy Cost = $845/year

Electric Water Heater (Tankless)

Water Heating = 2,818kW-hr/year

Energy Cost = $563/year

Solar Water Heating

Water Heating = 0 kW-hr/year

Energy Cost = $0/year

Payback Period < 5 years

Assuming no Incentives

$1,900 Initial Cost

With incentives PB < 1.5 yrs.

Residential Analysis

Using a DOE approved energy simulation software (Energy Plus), a typical social interest house was modeled taking into consideration the different characteristic parameters in Puerto Rico (e.g. construction materials, schedule activities, electrical equipment, living area, among others). This model was considered as the baseline model for comparison with proposed energy codes. All the respective construction parameter were obtained through the Home Builder’s Association.

Social Interest House

Residential Analysis (Con’t)

Residential Analysis Outcomes Equivalent ceiling R-Value of R-15:

20% reduction in cooling load. Proportionally increases, with house size and the number of A/C units in the household.

Up to a 15° F reduction on indoor temperatures.

Window overhangs:

Alternative option for window replacement to achieve a SHGC=0.4

Highly reduces the solar radiation through the windows.

Solar Water Heater

30% savings in electricity bill

Commercial Buildings For buildings except low-rise residential buildings (i.e.

commercial buildings) the ASHRAE 90.1-2007 is highly recommended to adopt to its totality.

This thorough standard has various trade-off options for compliance, at the same time considering tropical climates.

Most commercial buildings in PR are currently using ASHRAE 90.1 -1989.

Overall benefits Residential Building Energy Efficiency:

Based on the simulation’s results, the homeowner will have an

accumulative energy cost saving of approx. $11,500 after payback.

Commercial Buildings Energy Efficiency:

ASHRAE 90.1-2007 improves energy efficiency over 30% when compared to the ASHRAE 90.1-2004, and more than 35% when compared to the ASHRAE 90.1-1989.

Current Energy Codes

Implementation

0% 35%

Energy Conservation

Energy Conservation

Where are we now? The above mentioned proposed amendments, among

others prepared by other entities were evaluated and approved during technical hearings coordinated by Administration of Regulations and Permits (ARPE).

The final public hearing of proposed amendments to the IECC 2009 will be held on August 27, 2010.

Implementation of these codes is expected to begin in 2011.

Where are we now? (Con’t) Puerto Rico Energy Affairs Administration presented

the amendments to DOE and the other tropical U.S. territories. These meeting was held during the Building Energy Code Training on the week of July 19-23 in Charlotte, NC.

DOE was very pleased with the progress of PR.

All tropical US territories will collaborate to prepare a set of amendments in order possibly include them in the IECC 2015.

Deadline to hand in amendments to the IECC 2015 is in 2012.

Professional Education Support

Under the Puerto Rico State Energy Plan the following will be provided to support the Code Implementation effort:

Training for Design Professionals on Code Compliance.

Development of needed Green Jobs for new construction techniques.

Standardization of Code Compliance Documentation

ComCheck

ResCheck

Measurement of Implementation DOE is currently working on a pilot study for all states

and territories to achieve 90% compliance on the energy conservation codes by 2017.

Random pool selection of new structures and remodeling projects.

PREAA will offer recommendations/suggestions on this pilot study.

The “Oficina de Gerencia de Permisos” (OGPE) will be in charged of implementation and enforcement of these code along with PREAA support and monitoring.

Importance Energy Codes The implementation of these building energy codes in

Puerto Rico will have the following benefits:

Lead energy conservation efforts for tropical locations.

Could be the hub for energy innovations and knowledge transfer to the tropical locations around the world.

The load profiles will evolve to a different model, where less energy will be required to satisfy our future needs.

If fail to do so, Puerto Rico will:

Will miss current trends and opportunities for energy conservation and global warming mitigation.

Payback to federal government: $125 Million

Contact Information

Andre Mesa

Energy Affairs Administration

Government of Puerto Rico

Phone: 787-999-2200 ext. 2886

Email: amesa@aae.gobierno.pr