M&V Solar Water Heating Guideline - Eskom
M&V Solar Water Heating Guideline - Eskom
M&V Solar Water Heating Guideline - Eskom
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Measurement and Verification Standard <strong>Guideline</strong> for Low Pressure <strong>Solar</strong> <strong>Water</strong> <strong>Heating</strong> Systems v1r1<br />
6.2.1 Installed Electrical Appliances at a Typical Low-cost House .................................. 24<br />
6.2.2 Electricity Usage / Load Profiles at Low-cost Housing Environment ..................... 25<br />
6.3 Installation of Dedicated M&V Equipment at Project Sites .......................................... 28<br />
6.4 Base Line Methodology ................................................................................................. 29<br />
6.4.1 Base Line Main M&V Question .............................................................................. 29<br />
6.4.2 Interviews with the inhabitants .............................................................................. 29<br />
6.4.3 Using Base Line Measurements by Dedicated SWH data Loggers after the<br />
Retrofit .............................................................................................................................. 30<br />
6.4.4 Measurements of the Electrical Energy Prior and after Retrofit at the Household<br />
.......................................................................................................................................... 31<br />
6.4.5 Recommendations for Baseline Procedure ............................................................ 32<br />
7 Determination of the Savings .............................................................................................. 32<br />
7.1 M&V RECOMMENDED OPTION ............................................................................................. 33<br />
7.2 MAIN M&V QUESTION FOR DETERMINATION OF THE SAVINGS RESULTING FROM LOW PRESSURE<br />
SOLAR WATER HEATING SYSTEMS ................................................................................................ 33<br />
7.2.1 Scenario 1: Baseline energy in [kWh] is less or at least equal to the retrofit<br />
(LPSWH system) energy output in [kWh] ......................................................................... 33<br />
7.2.2 Scenario 2: Baseline energy in [kWh] is higher or at least equal to the retrofit<br />
(LPSWH system) energy output in [kWh] ......................................................................... 34<br />
7.2.3 Examples to illustrate the energy savings .............................................................. 34<br />
8 Thermal Performance Model of Low Pressure <strong>Solar</strong> <strong>Water</strong> <strong>Heating</strong> Systems .................. 35<br />
9 SUMMARY ............................................................................................................................ 36<br />
10 A Worked Example for Development of the base Line AND DETERMINATION OF THE<br />
ENERGY SAVINGS of a lpswh project ....................................................................................... 37<br />
11 REFERENCES ....................................................................................................................... 44<br />
6