Solar Pumping Solutions
solar hot water
Solar hot water Efficiency Graphs
View the charts below according to your latitude to demonstrate efficiencies of the Hills Evacuated Tube Solar Hot Water System in comparison to other solar systems on the market.
Sydney, New South Wales Collector Efficiencies
These charts demonstrate efficiencies of collectors when heating water from ambient temperature to 75 degrees Celsius.
Winter
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 426W/m2 and an Ambient Temperature of 13.1 degrees C in Sydney.
The ESTEEM TM Solar Collector is on Average 104% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Summer
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 840W/m2 and an Ambient Temperature of 21.3OC in Sydney.
The ESTEEM TM Solar Collector is on Average 50.5% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Radiation Data: Australian Solar Radiation Handbook edition 4 April 2006.
Temperatures: Bureau of Meteorology Climactic Averages.
Efficiency Calculation Formula: AS2535.1:2007 Annex B.
Flat Plate Collector Input Data: A1=0.655 A2=3.681 A3=0.0124 IAM=0.97. Tests performed at
National Solar Test Facility Canada.
Flat Plate Collector Absorber Material: Copper, Absorber Thickness: 0.005", Absorber Coating: PVD.
Data Represents the Suns angle 60 Degrees either side of Midday with 90% of the daily Insolation
totals incident during this period.
Collector efficiency is based on its ability to convert solar insolation to thermal energy.
Note: Radiation given is average Solar Radiation incident upon an inclined plane at an angle
of 20 Degrees, facing true (not Magnetic) North.
Melbourne, Victoria Collector Efficiencies
These charts demonstrate efficiencies of collectors when heating water from ambient temperature to 75 degrees Celsius.
Winter
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 296W/m2 and an Ambient Temperature of 9.9 degrees C in Melbourne.
The ESTEEM TM Solar Collector is on Average 163.5% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Summer
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 861W/m2 and an Ambient Temperature of 19.8 degrees C in Melbourne.
The ESTEEM TM Solar Collector is on Average 51.5% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Radiation Data: Australian Solar Radiation Handbook edition 4 April 2006.
Temperatures: Bureau of Meteorology Climactic Averages.
Efficiency Calculation Formula: AS2535.1:2007 Annex B.
Flat Plate Collector Input Data: A1=0.655 A2=3.681 A3=0.0124 IAM=0.97. Tests performed at National Solar Test Facility Canada.
Flat Plate Collector Absorber Material: Copper, Absorber Thickness: 0.005”, Absorber Coating: PVD.
Data Represents the Suns angle 60 Degrees either side of Midday with 90% of the daily Insolation totals incident during this period.
Collector efficiency is based on its ability to convert solar insolation to thermal energy.
Note: Radiation given is average Solar Radiation incident upon an inclined plane at an angle of 20 Degrees, facing true (not Magnetic) North.
Brisbane, Queensland Collector Efficiencies
These charts demonstrate efficiencies of collectors when heating water from ambient temperature to 75 degrees Celsius.
Winter
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 546W/m2 and an Ambient Temperature of 17.8 degrees C in Brisbane.
The ESTEEM TM Solar Collector is on Average 81% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Summer
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 828W/m2 and an Ambient Temperature of 25.2 degrees C in Brisbane.
The ESTEEM TM Solar Collector is on Average 54% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Radiation Data: Australian Solar Radiation Handbook edition 4 April 2006.
Temperatures: Bureau of Meteorology Climactic Averages.
Efficiency Calculation Formula: AS2535.1:2007 Annex B.
Flat Plate Collector Input Data: A1=0.655 A2=3.681 A3=0.0124 IAM=0.97. Tests performed at National Solar Test Facility Canada.
Flat Plate Collector Absorber Material: Copper, Absorber Thickness: 0.005”, Absorber Coating: PVD.
Data Represents the Suns angle 60 Degrees either side of Midday with 90% of the daily Insolation totals incident during this period.
Collector efficiency is based on its ability to convert solar insolation to thermal energy.
Note: Radiation given is average Solar Radiation incident upon an inclined plane at an angle of 20 Degrees, facing true (not Magnetic) North.
Adelaide, South Australia Collector Efficiencies
These charts demonstrate efficiencies of collectors when heating water from ambient temperature to 75 degrees Celsius.
Winter
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 452W/m2 and an Ambient Temperature of 10.9 degrees C in Adelaide.
The ESTEEM TM Solar Collector is on Average 132% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Summer
Efficiency Chart of an ESTEEM TM Evacuated Tube Collector Vs a Typical Flat Plate Collector. Based upon Solar Insolation of 953W/m2 and an Ambient Temperature of 22.1 degrees C in Adelaide.
The ESTEEM TM Solar Collector is on Average 52% more efficient per m2 of aperture than the Flat Plate Solar Collector.
Radiation Data: Australian Solar Radiation Handbook edition 4 April 2006.
Temperatures: Bureau of Meteorology Climactic Averages.
Efficiency Calculation Formula: AS2535.1:2007 Annex B.
Flat Plate Collector Input Data: A1=0.655 A2=3.681 A3=0.0124 IAM=0.97. Tests performed at National Solar Test Facility Canada.
Flat Plate Collector Absorber Material: Copper, Absorber Thickness: 0.005”, Absorber Coating: PVD.
Data Represents the Suns angle 60 Degrees either side of Midday with 90% of the daily Insolation totals incident during this period.
Collector efficiency is based on its ability to convert solar insolation to thermal energy.
Note: Radiation given is average Solar Radiation incident upon an inclined plane at an angle of 20 Degrees, facing true (not Magnetic) North.
