Solar geyser performance

rodga said:
My flat plate collecter solar system was just replaced by insurance with a 300l evac tube system. Geyserwise says it raised from 53 to 69 in the letter part of the afternoon. I have turned off the geyser circuit breaker and will monitor over the next few days. Seems much more efficient than the old system but then that was 15+ years old.
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Hit 86 today. Geyser cb was off since yesterday.
 
rodga said:
Hit 86 today. Geyser cb was off since yesterday.
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Responses like this makes it seem like my SWH is waaay underperforming!! What's your water usage though? I take 5-10min showers but the 4 others in my family love their long showers (even in summer!). Although I have had my geyserwise set to heat the geyser to 60deg (in summer) from 5am to 6:30am, by the time the 3kids finish their showers, the water temp is around 35deg. Thus it needs another boost from Eskom for my wife and I to shower!
 
ritz_sa said:
Responses like this makes it seem like my SWH is waaay underperforming!! What's your water usage though? I take 5-10min showers but the 4 others in my family love their long showers (even in summer!). Although I have had my geyserwise set to heat the geyser to 60deg (in summer) from 5am to 6:30am, by the time the 3kids finish their showers, the water temp is around 35deg. Thus it needs another boost from Eskom for my wife and I to shower!
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200 liters is way under budget for 6 people. Kwikot suggests 50l per person. As a first step I'd add at least another 10 tubes to your setup.
 
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