Apr 23 2018, 08:49 AM
QUOTE(Zot @ Apr 23 2018, 08:32 AM)
For me solar water heater is useless in Malaysia except .... (later on this)
During hot day, you get plenty of hot water but why you need hot water to bath in hot day? During rainy days, you just have water than is not hot enough or not enough hot waterÂ
I'w say even with electric water heater, the hot water storage tank is not holding water long enough for next day. Probably lost most of heat at night time. Someone who has been installing this said, it is not worth the investment. Almost useless.
The only thing that you can benefit is that if you use hot water in your kitchen like for cleaning greasy plate etc.
I don't know what experience your statements are based upon. I've live in 2 house were we installed a solar water heater, the first was a plastic panel type, it was good most of the year apart from a few days at the end of the year when the water wasn't warm. We have a vacuum tube type panel now, the performance is much better, I would estimate there are 2 -3 days/year when we have to use 100% water from the hot tap for a shower. We don't have electric water heaters.During hot day, you get plenty of hot water but why you need hot water to bath in hot day? During rainy days, you just have water than is not hot enough or not enough hot waterÂ
I'w say even with electric water heater, the hot water storage tank is not holding water long enough for next day. Probably lost most of heat at night time. Someone who has been installing this said, it is not worth the investment. Almost useless.
The only thing that you can benefit is that if you use hot water in your kitchen like for cleaning greasy plate etc.
To add, performance of the panel depends upon the location. best solar gain is generally in the mornings. Afternoons tend to be more cloudy.
This post has been edited by kk131: Apr 23 2018, 08:53 AM
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