Australian Politics Forum - New Solar system

Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: New Solar system Reply #15 - Oct 7^th, 2023 at 12:09pm Heating water takes a LOT of power. Mass and high specific heat. My Saxon woodheater—I can put a pan of stew on the front of it, it will slowly cook it so will try that rather than my slowcooker
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Captain Nemo

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Re: New Solar system
Reply #16 - Oct 7^th, 2023 at 1:02pm

Jovial Monk wrote on Oct 7^th, 2023 at 12:09pm:

Heating water takes a LOT of power. Mass and high specific heat.

My Saxon woodheater—I can put a pan of stew on the front of it, it will slowly cook it so will try that rather than my slowcooker

Yes, the heat pump was running almost 4 hrs last night.

Ran for free though thanks to the battery.

Those other short spikes are the kettle. Shocked

Here is what happened for the rest of the morning and so far today.

Quite overcast most of today but we were still only drawing from the grid during off-peak except for that blasted kettle again! Grin

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« Last Edit: Oct 7^th, 2023 at 1:21pm by Captain Nemo »

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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: New Solar system Reply #17 - Oct 7^th, 2023 at 2:15pm Yes, I would like to install a heat pump for hot water. Stuff paying the electric retailer.
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John Smith Gold Member Offline Australian Politics Posts: 78311 Gender:	Re: New Solar system Reply #18 - Oct 7^th, 2023 at 3:12pm Quote: Yes, the heat pump was running almost 4 hrs last night. I've never had a heat pump so I'm unsure how it works, but why run it at night? My hot water was set on a timer so that it would only heat up during the day when the solar panels were doing their thing
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Redmond Neck Gold Member Offline OzPolitic Posts: 23507 ACT Gender:	Re: New Solar system Reply #19 - Oct 7^th, 2023 at 3:31pm Gooday Nemo I had a 6.6Kw system installed this year, just wondering what the battery installation cost, as i wouldnt mind doing that as well?
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Captain Nemo Gold Member Offline Australian Politics Posts: 15570 Melbourne Gender:	Re: New Solar system Reply #20 - Oct 7^th, 2023 at 5:25pm Redmond Neck wrote on Oct 7^th, 2023 at 3:31pm: Gooday Nemo I had a 6.6Kw system installed this year, just wondering what the battery installation cost, as i wouldnt mind doing that as well? $10,000 for an 11 kW BYD brand battery. So the payback is a long-term prospect.
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Captain Nemo

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Re: New Solar system
Reply #21 - Oct 7^th, 2023 at 5:32pm

John Smith wrote on Oct 7^th, 2023 at 3:12pm:

Quote:

Yes, the heat pump was running almost 4 hrs last night.

I've never had a heat pump so I'm unsure how it works, but why run it at night? My hot water was set on a timer so that it would only heat up during the day when the solar panels were doing their thing

I let the heat pump do its thing whenever it wants to but it does have a timer set-up which I can use.

If the battery covers it I'm not really too worried when it fires up because we end up drawing from the grid during off peak (11 pm to 7 am) but I take your point that setting it to operate during the day might be a way to avoid drawing from the grid at all. I might have a go at setting it to run only in the day and see how we go.

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freediver Gold Member Offline www.ozpolitic.com Posts: 53184 At my desk.	Re: New Solar system Reply #22 - Oct 7^th, 2023 at 5:34pm It sounds like a heat pump is like a reverse cycle air conditioner. It will use a lot less electricity to heat up the water, and have an external cooler (beer fridge anyone?). The downside would be that it is not going to last 20 years like a hot water system should.
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Jasin Gold Member Offline Posts: 56772 Gender:	Re: New Solar system Reply #23 - Oct 7^th, 2023 at 6:45pm I have a group of Slaves. They power my place by running the treadmill.
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Jovial Monk

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Re: New Solar system
Reply #24 - Oct 7^th, 2023 at 7:04pm

Captain Nemo wrote on Oct 7^th, 2023 at 5:25pm:

Redmond Neck wrote on Oct 7^th, 2023 at 3:31pm:

Gooday Nemo

I had a 6.6Kw system installed this year, just wondering what the battery installation cost, as i wouldnt mind doing that as well?

$10,000 for an 11 kW BYD brand battery.

So the payback is a long-term prospect.

What type of battery? Lithium or something safer?

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Jovial Monk

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!
Reply #25 - Oct 7^th, 2023 at 7:09pm

Only solar panels I can install without rebuilding the house are a couple portable ones on the garage roof to keep a fish pond pump going. My land slopes, vege patch will be levelled with two levels, two wide terraces, means a waterfall effect can be simulated.

Mind you, dunno what fish I can stock! Top water of the pond might freeze on frosty cold nights!

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« Last Edit: Oct 7^th, 2023 at 8:32pm by Jovial Monk »

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freediver Gold Member Offline www.ozpolitic.com Posts: 53184 At my desk.	Re: New Solar system Reply #26 - Oct 7^th, 2023 at 8:31pm How's this for an idea - hook up your hot water system via a heat pump to your fridge and freezer. Maybe the temperature difference would be too much. I expect the hot water is much more powerful, so you could probably power a much bigger fridge and freezer while using less electricity.
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Captain Nemo

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Re: New Solar system
Reply #27 - Oct 8^th, 2023 at 10:11am

Jovial Monk wrote on Oct 7^th, 2023 at 7:04pm:

Captain Nemo wrote on Oct 7^th, 2023 at 5:25pm:

Redmond Neck wrote on Oct 7^th, 2023 at 3:31pm:

Gooday Nemo

I had a 6.6Kw system installed this year, just wondering what the battery installation cost, as i wouldnt mind doing that as well?

$10,000 for an 11 kW BYD brand battery.

So the payback is a long-term prospect.

What type of battery? Lithium or something safer?

I choose the danger. Cheesy

Cobalt Free Lithium Iron Phosphate (LFP) Battery

BYD
Premium HVM
11.04kWh of Storage

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« Last Edit: Oct 8^th, 2023 at 10:35am by Captain Nemo »

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Jovial Monk Gold Member Offline Dogs not cats! Posts: 51474 Gender:	Re: New Solar system Reply #28 - Oct 8^th, 2023 at 10:41am No, you chose safety—those are the LiFePO batteries that are much safer than plain lithium ones. Well done!
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issuevoter Gold Member Offline Australian Politics Posts: 9200 The Great State of Mind Gender:	Re: New Solar system Reply #29 - Oct 8^th, 2023 at 7:12pm I have to buy Communist Chinese crap that undercuts Western industry, but I would not give them that kind of money.
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