Geyser timer solution for solar

[Lupus]

Just buy a 2kw element for R300. Turn breaker off, drain geyser, remove element, fit new element, turn water back on and let it fill up, turn breaker back on.

And watch as it takes 5 hours to heat water

 

[wingnut771]

Just having a mixer tap in the middle uses hot water, doesn't matter if it's hot to touch or not it's still using hot water.
A heat pump monitors the geysers temp better as well so 55 is 55 and it also only turns back on when it will hit 52.

I know, thats why I walk through the house every day and turn them all to the cold side. Never ending job.

 

[Lupus]

I know, thats why I walk through the house every day and turn them all to the cold side. Never ending job.

And you don't even have kids

 

[isie]

Install a 2Kw element to give you some room.

Don't do it

 

[wingnut771]

90% of the time you won't hear it unless you're in the loo

I can hear my inverter aircon through the wall at certain speeds when it starts to resonate. through the wall

 

[wingnut771]

And watch as it takes 5 hours to heat water

There is 6 hours of sunlight:


Also, you can always turn the hot tap on more at the temp drops to 55.

 

[wingnut771]

And you don't even have kids

They have kids, 2 teenagers and a wife.

 

[wingnut771]

Don't do it

Dont leave me in suspense.

 

[Lupus]

There is 6 hours of sunlight:
View attachment 1881747

Also, you can always turn the hot tap on more at the temp drops to 55.

On a good day. So for the entire day his system will be warming his water not charging his battery

 

[wingnut771]

On a good day. So for the entire day his system will be warming his water not charging his battery

His battery is only charging at 35A (checks calculator): 1792W.

 

[isie]

Dont leave me in suspense.

tried it out , its exactly as @Lupus said Just takes forever to heat up - you using the same amount of power(maybe more as it might run a lot longer) - yes less taxing on the inverter but just not worth it
cheap experiment luckily -

 

[wingnut771]

tried it out , its exactly as @Lupus said Just takes forever to heat up - you using the same amount of power(maybe more as it might run a lot longer) - yes less taxing on the inverter but just not worth it
cheap experiment luckily -

Yes but what can you do when you have a 5kW inverter? One thing we have is time. Whats the rush? Have you tried setting it to 70?

 

[isie]

Yes but what can you do when you have a 5kW inverter?

thats why i went with 8kw - plus im the 2 geysers in series guy

One thing we have is time. Whats the rush?

i live with lizard people and you not sure if the day will remain good so try to get the geysers sorted by latest 2pm

Have you tried setting it to 70?

yup , on the good PV days one goes to 70 on the great PV days both go to 70

 

[G.A.S]

Yes but what can you do when you have a 5kW inverter? One thing we have is time. Whats the rush? Have you tried setting it to 70?

Times like this it helps to have a good setup: the geyser is on the non-critical line on the inverter, so it will get solar power when there is, mix with AC if solar generation or inverter capacity is insufficient, and go down with loadshedding so it doesn't overload the inverter. :-D

That, and a 5500W Sonoff, Raspberry Pi, and NodeRed.

 

[isie]

run it in the wee hours of the morning then top up during the day for an hour.

there be no sun in the wee hours

 

[Lupus]

run it in the wee hours of the morning then top up during the day for an hour.

Off of batteries? So you'd want 5 hours of constant 2.3 draw?

 

[Lupus]

tried it out , its exactly as @Lupus said Just takes forever to heat up - you using the same amount of power(maybe more as it might run a lot longer) - yes less taxing on the inverter but just not worth it
cheap experiment luckily -

It would actually work out a tad more.

 

[Lupus]

His battery is only charging at 35A (checks calculator): 1792W.

And 2300w will be taking the rest of the that, including cloudy days.

 

[Lupus]

Why do you need sun when you have a battery?

His batteries were at 3% this morning

 

[wingnut771]

thats why i went with 8kw - plus im the 2 geysers in series guy

i live with lizard people and you not sure if the day will remain good so try to get the geysers sorted by latest 2pm

yup , on the good PV days one goes to 70 on the great PV days both go to 70

I meant with 2kW. Trying to save @cavedog buying an 8kW inverter.