Geyser timer solution for solar

[Lupus]

He definitely needs more solar, maybe he should take out that solar geyser panel and do what @denmendez65 did.

Or bigger element, or heat pump, or gas geyser, or solar geyser that fills up the 200l

 

[denmendez65]

How’s your warm water tank experiment?

Switched it off as the geyser controller is doing fine.

With thermometer I can see if it helps. Will turn it back on as a test for the remaining month or so I am here.

 

[wingnut771]

4kw is generally advisable for 200l geysers, 3kw is a happy medium and will drop it down by almost an hour to warm up the water.
Remember with 2kw you're essentially asking a kettle to heat 200l of water. Not sure who advised you to use 2kw with such a big geyser. 21k will get you a 3.4kw heatpump that will draw 900w and have the water done in about 2 and half hours.

PROMOTIONS!!! | Solar Geysers | 4 Seasons Solar Gauteng

Current Solar Geysers PROMOTIONS Offered by 4 Seasons Solar

www.4solarsa.com

It’s the length of the element.
100l come with 2kW
150l come with 3 kW
200l come with 4 kW

4 kW won’t fit in 150l.

 

[denmendez65]

@denmendez65, how much did your pv solar cost?

For the geyser? Or the whole thing?

Geyser was 9k for controller plus the 4 panels plus cabling, DB breakers etc.

 

[wingnut771]

4kw is generally advisable for 200l geysers, 3kw is a happy medium and will drop it down by almost an hour to warm up the water.
Remember with 2kw you're essentially asking a kettle to heat 200l of water. Not sure who advised you to use 2kw with such a big geyser. 21k will get you a 3.4kw heatpump that will draw 900w and have the water done in about 2 and half hours.

PROMOTIONS!!! | Solar Geysers | 4 Seasons Solar Gauteng

Current Solar Geysers PROMOTIONS Offered by 4 Seasons Solar

www.4solarsa.com

I posted a 3.6kW for R14knyesterday from ac direct.

 

[denmendez65]

Or bigger element, or heat pump, or gas geyser, or solar geyser that fills up the 200l

If he uses my exact system he can heat the 200 litres with no problem.

 

[wingnut771]

Or bigger element, or heat pump, or gas geyser, or solar geyser that fills up the 200l

He’s gor a solar geyser facing NE

 

[wingnut771]

If he uses my exact system he can heat the 200 litres with no problem.

Is that cheaper than a heat pump?

 

[Lupus]

I posted a 3.6kW for R14knyesterday from ac direct.

This is with install

 

[Lupus]

He’s gor a solar geyser facing NE

Doesn't seem to be working

 

[wingnut771]

For the geyser? Or the whole thing?

Geyser was 9k for controller plus the 4 panels plus cabling, DB breakers etc.

Didnt know you bought a geyser.
How much for controller and panels?

 

[wingnut771]

Doesn't seem to be working

Indeed. Those tube things are useless. Replace with 4 pv panels and controller.

 

[denmendez65]

He’s gor a solar geyser facing NE

Why is it not heating then?

 

[wingnut771]

This is with install

Think it’s better to go @denmendez65 strategy to take load off inverter as it doesn’t look very big. Only 2kW of solar.

 

[wingnut771]

Why is it not heating then?

Good question. **** angle prob.

 

[denmendez65]

Didnt know you bought a geyser.
How much for controller and panels?

No it’s orginal geyser that was there. Panels etc was 9.5

 

[Lupus]

Indeed. Those tube things are useless. Replace with 4 pv panels and controller.

Well there is another way, lots of copper pipes in a coil, light a fire in the middle of the coil and pipe that into the geyser . It would be more effecting. The tubes could work if you have quite a few of them and lots of sun.

 

[wingnut771]

Well there is another way, lots of copper pipes in a coil, light a fire in the middle of the coil and pipe that into the geyser . It would be more effecting. The tubes could work if you have quite a few of them and lots of sun.

How much are the copper pipes?

 

[wingnut771]

We need 7kWh to heat 200l from 30 to 55 and about 9kWh from 20c.

 

[Lupus]

How much are the copper pipes?

They aren't that expensive, you need them to be relatively small to allow the water to warm quickly. 5m is roughly 400 bucks, the problem is coiling that.