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Chilean Building Thermal Performance regulations:
what we´ve done and what we haven´t Waldo Bustamante G
School of Architecture
Catholic University of Chile
CIB TASK GROUP 66 WEB EVENT
"THE IMPLEMENTATION OF ENERGY EFFICIENT BUILDINGS POLICIES IN SOUTH AMERICA"
NOVEMBER 4, 2010
Chile.
17 million people
7 million in Santiago
85% urban population
0,2 % of world CO2 emissions
170% of CO2 emissions increasing during last 25 years
Energy: Main responsible for CO2 emissions
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PRIMARY ENERGY
Source: Ministry of Energy. Chile
Firewood 14%
Petrolium 35%
Natural Gas 22%
Coal 10%
Hidro power 19%
BY SECTORS
20% FOR RESIDENTIAL SECTOR
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Source: Ministry of Energy of Chile. 2010
Residential buildings national survey
Hot Water
33.2%COOKING
13,4%
Refrig 9,5%
Lighting (5,4%)
Heating system
19,1%
TV 4,2%
Stand by 3.5%
Climate:
To the
expected
variation from
north
to south, the
ocean, the
coastal range
and the
Andes, along
the country
causes
pronounced
longitudinal
variations
Note: temperatures in °C and Solar radiation (mean value) in kWh /m2 day
T°Max T°Mín Sol rad
Jan 29.7 13.0 6.4
July 14.9 3.9 1.2
T°Max T°Mín Sol rad
Jan 24.9 17.7 7.2
July 18.0 13.1 3.6
T°Max T°Mín Sol rad
Jan 24.1 5.4 7.6
July 20.9 -0,9 4.1
T°Max T°Mín Sol rad
Jan 23.8 9.0 7.0
July 11.6 4.2 1.1
T°Max T°Mín Sol rad
Jan 14.7 6.5 5.1
July 3.7 -1,1 0.6
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CHILEAN THERMAL REGULATIONFOR (NEW) HOUSING
1st STEP : 2000
Maximun U values for
Ceiling of new residential buildings
2nd STEP: 2007
Maximum U values for Walls
Floor (excepting floors over ground)
Máx area of windows according tu U value
THERMAL ZONES to ACCORDING HEATING DEGREE DAYS / BASE 15°C
1 5002 > 500 - 7503 >750 - 10004 >1000 - 1250
5 > 1250 - 15006 >1500 - 20007 > 2000
“ThermalZones”
Or
HeatingDegreeDayZones
Climatic Zones accordingto a non mandatory Chilean Standard
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Ceiling Walls FloorSingle
glazing
Double Glazing
Max Area WindowsSTANDARDS (Residential buildings)
No standars for ventilation
No standards for infiltration
No standards for cooling periods
No requirements for thermal bridges and “nonventilated“ floors
No standards for avoidingcondensation
CityThermal
Zone
Máx U
Wall
W/m2 K
Máx U
Ceiling
W/m2 K
Minimum
Heating Demand
kWh/m2 year
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