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
Download the document here, or read it below: