Abstract
M.Ing. (Electrical Engineering)
In recent years the DSM residential program has extended itself to include subsidies for solar water heaters. This undertaking is primarily based on the fact that water heating contributes to about 30-50% of a households electricity demand.
The National Solar Water Heater Program, encourages residential homeowners to install an approved SABS solar water heater by means of a rebate incentive. The Namibian national power utility NamPower is set to roll out a similar DSM initiative. Often for DSM initiatives, impacts need to be determined with a certain degree of accuracy to ensure the security of the various stakeholders involved. Measurement and Verification (M&V) is a practice where an independent body impartially determines and presents its findings of the impacts of a DSM initiative.
The objective of this project looks to correlate the European (EN 12975-2) and American (ASHRAE 93) SWH standards to the South African (SANS 6211) SWH standard. The correlation will focus on finding a relationship between the performance coefficients of equations 9, 10 and 11 that are mentioned in chapter five.
This interrelationship should allow PolySun to accurately simulate South African SWH systems that are not found in PolySun’s database. Providing an M&V entity, Utility or SWH consumer the option of simulating SWH systems found in South Africa in PolySun.