wind energy.

100kwh-hunter

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Mar 2, 2019
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A couple of months go, i wanted some energy from the windt.
A lot of knowledgeable people around here, advised me to don't do it.
It was about some aliexpress windmill.

The idea of a windmill/turbine on my roof or field was still playing in my head.
I live in a country side place withlots of open space, and decided to continue on my search...

I found this article on somewhat more expensive and better wind turbines.
Hope this is interesting for people that want to play with the same idea.
I am somewhat cured, every extra cent is going to my solar and pw stuff

https://www.lowtechmagazine.com/2009/04/small-windmills-test-results.html

Hope this is a pleasant reading.

Btw "Zeeland" is one of our most windy province, second i thought, "Noord-Holland" the first i thought.
 
I'd suggest looking at VAWT. I personal am though it needs planning permission so it got push to the last leg.

I've seen decent 450W / 600W VAWTs on eBay and aliexpress.

Depends on what you want though.. For higher stronger directional wind (not residential) you could look at Hawt mounted on pole.
 
"Selling everything at marketplace."

Wat is dat nou?

Why is that?
 
RikH said:
"Selling everything at marketplace."

Wat is dat nou?

Why is that?

Marketplace link on the main page.
 
@ Korishan.
No offence was taken or giving.
In our slang: wat is dat nou.
Would rufly, freely translated into: Whaaat are you doing?!?!.

Rikh also lives in Noord Holland, means he could be a "west fries".
For me that justivices that comment. It is in our slang, he did not mean something bad, but is curious why i stop with 18650 hobby, after so much trouble and almost completed 50%
To give him my answer, the sad reality:

@Rikh,
I had a visit from a caviar hunter in my garden, just after i left for work.
Wasn't a pleasant homecoming.
The fish in my profile picture was killed for the kaviar...i had that fish for over 25 years.
Its not the first time, so we decided to close the pond, and the fishes are going to the zoo, Amsterdam or zandvoort or beverwijk.
With out the security system and pond we use only ~2kwh a day.
Time for this is also a important factor.
For an (diy) ev and or heating we need a totallydifferent system.
But i agree, pm would be better.

I am not quitting on this forum,btw
Best


Back to topic:
At hermitdave,
I don't know the exact laws on this subject around here.
But if you don't "pollute" the horizon view, it would be ok to put one in your back garden of max 7 meters in height.
When we have no sun we have windt, probably the same weather in the uk.

But i will look on your suggestions for sure
 
Hahah, I wasn't thinking it was offensive. I thought he had bad english and was asking "what is that at?" or something of the sort. that's why I replied what I did ;)
But fair enough. Each country has their own slang, whether it's in english or their own. No worries. Thanks for the lingo lesson tho :)
 
100kwh-hunter said:
Back to topic:
At hermitdave,
I don't know the exact laws on this subject around here.
But if you don't "pollute" the horizon view, it would be ok to put one in your back garden of max 7 meters in height.
When we have no sun we have windt, probably the same weather in the uk.

But i will look on your suggestions for sure

In UK under permitted development, detached houses can have wind turbine installed (height restrictions apply) on pole and on the building itself.

I love in a semi detached house though having had a chat with planning officer, he really wants me to have a go. First of any renewable does not planning permission. So I'm looking at
Heat pump / solar first.
 
Sorry i don't want to be a party pooper.
Heat pump...waist of time and money...go with solar, you will find out.
 
I have to disagree re heat pump being a waste of time&money. In the long run they win by miles compared to other types of electrical heating. Just make sure to get a proper sized one. And if you live in snow/freeze prone areas, oversize it and place it under some sort of shelter.
 
ajw22 said:
I have to disagree re heat pump being a waste of time&money. In the long run they win by miles compared to other types of electrical heating. Just make sure to get a proper sized one. And if you live in snow/freeze prone areas, oversize it and place it under some sort of shelter.

The gas grid informed me that meter will need to be moved as current regulations do not allow it to be in enclosed box within storage room. I was told by gas engineers that they charge around 2500.

I'd go with 12kW heatpump as they use approx 3 / 4 kW electric. Not only will I cut greenhouse emissions, i can power it with solar
 
If you're in the UK, you're unlikely to have enough solar power in the winter to fully power the heatpump. Perhaps you can do what I do: get a time-of-use electric plan. Try to manage with solar and powerwall during the peak times, and just use grid power during off-peak hours. It's cheap and pretty green, too, since fuel burning power plants are likely to be off/idling during off-peak times.
 
ajw22 said:
If you're in the UK, you're unlikely to have enough solar power in the winter to fully power the heatpump. Perhaps you can do what I do: get a time-of-use electric plan. Try to manage with solar and powerwall during the peak times, and just use grid power during off-peak hours. It's cheap and pretty green, too, since fuel burning power plants are likely to be off/idling during off-peak times.

I'm on specialised tariff which gives me low rate 10 hours from 2100 GMT every weekday night and entire weekend.

Yes I'm planning something like that.
 
@awj22.
Interesting.
Can you give me some more info please.
Or provide some links.
I would like to expand my knowledge, cous what they are offering in holland, is not much.

Thanks in advance
 
ajw22, it seems like there are lots of power options in the UK! I'm just curious if you ever see prices go negative on your time-of-use plan and if you monitor prices manually or if you have some sort of program to automate your switching from grid to battery and back again?

Where I'm at in the US, a time-of-use plan is available, and I've seen prices go negative occasionally. Last night, between midnight and 5AM, prices stayed at 0.5 cents (US$0.005) or less per kilowatt. But I've also seen them go to 50 cents (US$0.50) per kilowatt for brief periods of high demand as well. There are also plans that give free electricity every night between 7 and 11PM, that I'm considering exploiting if I can get my batteries to charge fast enough. And if I can get my system automated. I've reached out to a few people working on peak-shaving, but they all seem to abandon their projects. It's a cool idea if I can get it to work!
 
I have a very simplified time-of-use plan: fixed high rates during the day, and about 1/3 price during the off-peak hours of 11pm~7am. There's some slight variability depending on market fuel prices, but it's just +/-10% or so. No hope of ever approaching zero.

I've updated my project page (see sig) to show how I've automated usage of the off-peak rate.
In short: RaspberryPi BMS monitor controls GTIs via a TP-Link HS105 Smart Wifi Plugs.
I _could_ use the same system to charge the batteries from the grid during off-peak times, but I don't think it's worth it, considering the additional wear on the batteries and conversion inefficiencies involved. Not to mention that saving a few $ on electricity is not my main motivation.

100kwh-hunter: Can't say much about electric rates in Holland. https://www.mainenergie.nl/en/thuis-tarieven/ seems to offer something, but the off-peak rates are almost the same. ...or were you asking about the heat pumps?
 
That's a really clever and simple way to do it! Having fixed rates at times makes it even easier, you can set a time and forget about it. Nice setup, btw!

I guess there are two different time-of-use plans, one that has fixed rates at different times of the day, and one that has variable rates based on actual prices on the electricity market. If you want to see what I'm talking about,check this outfor the second type of plan from my utility, and you can see negative rates if you scroll back to November 21, and $0.507/kwh on November 18.
 
Heat pumps and windenergie in particular.
I would like to have some good stuff and not the pre roberment payed stuff, i am cured, sorry
Don't fall for that scam from mainenergie...the after bill would be a big surprise.
They sound cheap, the cheapest in the Netherlands is greenchoice.

Best
 
100kwh-hunter said:
Heat pumps and windenergie in particular.
I would like to have some good stuff and not the pre roberment payed stuff, i am cured, sorry
Don't fall for that scam from mainenergie...the after bill would be a big surprise.
They sound cheap, the cheapest in the Netherlands is greenchoice.

Best

Heatpump are like refrigeration unit. Depending upon what you install you can either heating only or heating and cooling option.

In UK, heating only option are supported by renewable heating incentives. Normally they pull 3x amount of heat compared to what they consume
 
There are many types of heatpump systems, but what they all have in common is that they use one unit of energy (kWh) to move ("pump") about 3 units of heat energy into the home. So compared to other electrical heating units (eg. fan heater, oil heater, toasters, etc), heatpumps use just 1/3 the electricity.

One type sucks warmth from the ground and pumps the heat into the house. Effective, but need quite a lot of digging to get it installed.

The most common heatpump system is the Ductless Mini-Split Air Conditioners (lots of similar names), which extracts warmth from the outside air. Some can only cool, but most nowadays can be reversed into heating mode, too. I'm sure you've seen them before:
https://www.amazon.com/dp/B07XHNWJQQ

Of course the device is a bit pricier than simple heating units, but over time it will be cheaper due to the 1/3 consumption of electricity.
Installation is not that difficult (see YouTube), but you may need to hire a licensed technician (electricity + refrigerant) depending on your region.

One common complaint with these units is "they just don't work in the winter", but that's often due the outdoor device getting snowed in. Another common cause is that a too small device is made to work at full power for too long. Like with a freezer, ice builds up over time, reducing the efficiency.
If you have very harsh winters, there are specialized units that have modifications optimized for winter operations, too. Like hoods to deflect snow, strategically placed heating elements for removing ice, etc.
 
Another thing that keeps them from working during winter is if it's too cold. If the heat isn't ample enough to be captured, then it can't be transferred inside. The colder it is outside, the harder it is to get heat to transfer inside.
Agreed with making sure the outside unit not be covered in snow. It needs air flow to work properly.
 
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