Abstract :
The performance of water-in-glass evacuated tube solar water heaters is evaluated using experimental measurements of optical and
heat loss characteristics and a simulation model of the thermosyphon circulation in single-ended tubes. The performance of water-inglass
evacuated tube solar collector systems are compared with flat plate solar collectors in a range of locations. The performance of
a typical 30 tube evacuated tube array was found to be lower than a typical 2 panel flat plate array for domestic water heating in Sydney.
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