Solar Water Heating in the Waitakere and Rotorua NOW Homes and in 3 Papakowhai Renovation Homes (2009)

This report by Beacon Pathway evaluates the relative successes of solar water heating installations in three pilot  renovation projects in New Zealand. Each renovation project used a different SWH system, which allows Beacon Pathway to make conclusions about best practice - after efficiency levels varied significantly between 36-75% of total energy use being from renewable sources over the monitored period.

From these results, the report makes four best-practice suggestions:

  • Control of supplementary heating isimportant
  • The collector angle should latitude rather than shallow
  • The collector area should be large enough for demand required
  • Heat loss should be kept to a minimum

The report also discovers that most users of SWH in New Zealand are passive, rather than regularly monitoring systems to ensure best performance.

Author: Beacon Pathway

Year: 2009


Pages: 115

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