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Roof Savings Calculator
Heat Island group
Cool Colours Project
Cool Roof Rating Council
Cool Roof Calculator
Simple Inputs
Detailed Inputs
Parametric Inputs
Simple Inputs
Location
ST.PETERSBURG - Florida
Toronto
Victoria - British Columbia
San Jaun - Puerto Rico
Albuquerque - New Mexico
Las Vegas
Redmond
Vancouver
Carson City - Nevada
El Dorado - California
Beijing
New York
Nairobi
San Diego - California
Johannesburg
Harare
Brisbane
Dallas
Orlando
Hong Kong
Kuala Lumpur
Kuwait
Cairo
Stockholm
Miami
Nashville
Boston
Phoenix
Auckland
Singapore
Berlin
Dublin
Madrid
London
San Francisco
Detroit
Melbourne
Perth
Adelaide
Ahmedabad
Akola
Allahabad
Amritsar
Aurangabad
Bangalore
Barmer
Belgaum
Bhagalpur
Bhopal
Bhubneshwar
Bikaner
Calcutta
Chennai
Chirtadurg
Dehradun
Dibrugarh
Gorakhpur
Guwahati
Gwalior
Hissar
Hyderabad
Imphal
Indore
Jabalpur
Jagdelpur
Jaipur
Jaisalmer
Jamnagar
Jodhpur
Jorhat
Kolkata
Kota
Kurnool
Lucknow
Mangalore
Mumbai
Nagpur
Nellore
New Delhi
Panjim
Patna
Pune
Raipur
Rajkot
Ramagundam
Ranchi
Ratnagiri
Raxaul
Saharanpur
Shillong
Sholapur
Sundernagar
Surat
Tezpur
Tiruchirapalli
Trivandram
Veraval
Vishakhapatnam
Cool Roof
Slope Roof
Green Roof
Slope Angle
Orientation
WWR
Plant Properties
Height of Plants (m)
LEAF AREA INDEX (dimensionless)
Leaf Emissivity
Leaf Reflectivity (dimensionless)
Min Stomatal Resistance {s/m}
Soil Properties
Thickness (m)
Conductivity of Dry Soil {W/m-K}
Density of Dry Soil {kg/m3}
Specific Heat of Dry Soil {J/kg-K}
Thermal Absorptance
Solar Absorptance
Visible Absorptance
Saturation Volumetric Moisture Content of the Soil Layer
Residual Volumetric Moisture Content of the Soil Layer
Initial Volumetric Moisture Content of the Soil Layer
Building Type
Office
Institutional
Retail
Residential (Night Occupied)
Residential (24 Hrs Occupied)
Roof area
Roof Type
Insulated Concrete Roof
Uninsulated Concrete Roof
100 Reinforced Concrete+12 cement render on both sides
100 Reinforced Concrete+75 lime concrete (brick bats)+20 clay tile
100 Reinforced Concrete+12 cement render+25 air gap+Mangalore tile
Radiant Barrier
OFF
ON
Normal Roof
Gray EPDM (SR=0.23, IE=0.87, SRI=21)
Gray Asphalt Shingle (SR=0.22, IE=0.91, SRI=22)
Unpainted cement tile (SR=0.25, IE=0.9, SRI=25)
Red Clay tile (SR=0.33, IE=0.9, SRI=36)
Light Gravel (SR=0.34, IE=0.9, SRI=37)
Aluminium coating (SR=0.61, IE=0.25, SRI=50)
White-coated gravel (SR=0.65, IE=0.9, SRI=79)
White coating on metal roof (SR=0.67, IE=0.85, SRI=82)
White EPDM (SR=0.69, IE=0.87, SRI=84)
White cement tile (SR=0.73, IE=0.9, SRI=90)
White coating, 1 coat (SR=0.8, IE=0.91, SRI=100)
PVC white (SR=0.83, IE=0.92, SRI=104)
White coating, 2 coats (SR=0.85, IE=0.91, SRI=107)
Cool Roof
Gray EPDM (SR=0.23, IE=0.87, SRI=21)
Gray Asphalt Shingle (SR=0.22, IE=0.91, SRI=22)
Unpainted cement tile (SR=0.25, IE=0.9, SRI=25)
Red Clay tile (SR=0.33, IE=0.9, SRI=36)
Light Gravel (SR=0.34, IE=0.9, SRI=37)
Aluminium coating (SR=0.61, IE=0.25, SRI=50)
White-coated gravel (SR=0.65, IE=0.9, SRI=79)
White coating on metal roof (SR=0.67, IE=0.85, SRI=82)
White EPDM (SR=0.69, IE=0.87, SRI=84)
White cement tile (SR=0.73, IE=0.9, SRI=90)
White coating, 1 coat (SR=0.8, IE=0.91, SRI=100)
PVC white (SR=0.83, IE=0.92, SRI=104)
White coating, 2 coats (SR=0.85, IE=0.91, SRI=107)
HVAC Details
Window/Split air conditioner, Heating source: Electric Heat Pump
Central VAV system with air cooled chiller, Heating Source : Electric Resistance
Central VAV system with water cooled screw chiller, Heating Source : Electric Resistance
Packaged rooftop air conditioner, Heating source: Electric Heat Pump
Electricity
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Email ID:
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Detailed Inputs
Location
Ahmedabad
Akola
Allahabad
Amritsar
Aurangabad
Bangalore
Barmer
Belgaum
Bhagalpur
Bhopal
Bhubneshwar
Bikaner
Calcutta
Chennai
Chirtadurg
Dehradun
Dibrugarh
Gorakhpur
Guwahati
Gwalior
Hissar
Hyderabad
Imphal
Indore
Jabalpur
Jagdelpur
Jaipur
Jaisalmer
Jamnagar
Jodhpur
Jorhat
Kolkata
Kota
Kurnool
Lucknow
Mangalore
Mumbai
Nagpur
Nellore
New Delhi
Panjim
Patna
Pune
Raipur
Rajkot
Ramagundam
Ranchi
Ratnagiri
Raxaul
Saharanpur
Shillong
Sholapur
Sundernagar
Surat
Tezpur
Tiruchirapalli
Trivandram
Veraval
Vishakhapatnam
Building Type
Office
Institutional
Retail
Residential (Night Occupied)
Residential (24 Hrs Occupied)
Roof area
Radiant Barrier
OFF
ON
Roof Type
Layer 1 (Top most):
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
Acoustic tile
Insulation
Layer 2:
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
AirGap
Acoustic tile
Insulation
None
Layer 3:
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
AirGap
Acoustic tile
Insulation
None
Layer 4:
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
Acoustic tile
Insulation
None
Roof External Finish
:
Normal Roof
:
Reflectivity (aged):
Emissivity(aged):
Cost (Ruppee/m
2
):
Life (Years):
Cool Roof
:
Reflectivity (aged):
Emissivity(aged):
Cost (Ruppee/m
2
):
Life (Years):
HVAC Details
Window/Split air conditioner, Heating source: Electric Heat Pump
Central VAV system with air cooled chiller, Heating Source : Electric Resistance
Central VAV system with water cooled screw chiller, Heating Source : Electric Resistance
Packaged rooftop air conditioner, Heating source: Electric Heat Pump
System/Chiller COP:
Internal Loads
:
Lighting power density (W/m
2
):
Equipment power density (W/m
2
):
Window Area
:
North (m
2
):
South (m
2
):
East (m
2
):
West (m
2
):
Electricity
Show me the results now
Email
Email ID:
Simulate
Parametric Inputs
Location
Ahmedabad
Akola
Allahabad
Amritsar
Aurangabad
Bangalore
Barmer
Belgaum
Bhagalpur
Bhopal
Bhubneshwar
Bikaner
Calcutta
Chennai
Chirtadurg
Dehradun
Dibrugarh
Gorakhpur
Guwahati
Gwalior
Hissar
Hyderabad
Imphal
Indore
Jabalpur
Jagdelpur
Jaipur
Jaisalmer
Jamnagar
Jodhpur
Jorhat
Kolkata
Kota
Kurnool
Lucknow
Mangalore
Mumbai
Nagpur
Nellore
New Delhi
Panjim
Patna
Pune
Raipur
Rajkot
Ramagundam
Ranchi
Ratnagiri
Raxaul
Saharanpur
Shillong
Sholapur
Sundernagar
Surat
Tezpur
Tiruchirapalli
Trivandram
Veraval
Vishakhapatnam
Building Type
Office
Institutional
Retail
Residential (Night Occupied)
Residential (24 Hrs Occupied)
Roof area
Radiant Barrier
OFF
ON
Roof Type
Layer 1 (Top most):
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
Acoustic tile
Insulation
Layer 2:
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
AirGap
Acoustic tile
Insulation
None
Layer 3:
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
AirGap
Acoustic tile
Insulation
None
Layer 4:
Metal Surface
12mm thick motar
Built-up roofing
150mm Thick RCC Slab
200mm Thick RCC Slab
Gypsum Plasterboard
Tile or slate
Acoustic tile
Insulation
None
Roof External Finish
:
Normal Roof
:
Reflectivity (aged):
Emissivity(aged):
Cost (Ruppee/m
2
):
Life (Years):
Cool Roof
:
Reflectivity (aged):
Emissivity(aged):
Cost (Ruppee/m
2
):
Life (Years):
k-Value of insulation (W/mK):
HVAC Details
Window/Split air conditioner, Heating source: Electric Heat Pump
Central VAV system with air cooled chiller, Heating Source : Electric Resistance
Central VAV system with water cooled screw chiller, Heating Source : Electric Resistance
Packaged rooftop air conditioner, Heating source: Electric Heat Pump
System/Chiller COP:
Internal Loads
:
Lighting power density (W/m
2
):
Equipment power density (W/m
2
):
Window Area
:
North (m
2
):
South (m
2
):
East (m
2
):
West (m
2
):
Electricity
Show me the results now
Email
Email ID:
Simulate