House power requirement

[Mur Huwcun]

get a bucket (3 gallon)and time how long it takes to fill

You wouldn’t hold a bucket on mine let alone time it!!

 

[daveydiesel1]

You wouldn’t hold a bucket on mine let alone time it!!

Mine either

 

[renewablejohn]

Yes but really you shouldn’t be harvesting from flowing water but it would work fantastic as running water never gets close to freezing temps and will never run out!!

Why should you not be harvesting from flowing water. With global warming rivers are getting to hot and fish are dying there iare schemes already in place to cool some rivers down.

 

[renewablejohn]

I’m lucky as it is to have 12 feet of drop and a 6” twin wall is running approx half full. It use to power a water wheel on side of house intill we re directed it slightly

You have plenty of water and fall to get a very useful output not only to provide electric for yor home but also heat your house for free.

 

[renewablejohn]

Take a look at these

Demonstration Videos – Kourispower

www.kourispower.com

With a head of 12 feet you could have two in series. The first with a generator connected and the second with a heat pump.

The technology is very simple and most farmers would be able to knock something up from off the shelf parts. Biggest thing is the tank which is easily obtainable as recycled 1620 ltr orange juice tanks. just cut the bottom off and use upside down.

 

[t murrr]

Suppose if you think of it like this a rule of thumb is a 10 kw per 1000 sq foot so unless you can produce something close to that you are wasting your time .There is a calculation of how much in volume a 1 kw etc immersion will heat to a certain temp and maintain it. Water is one of the hardest mediums to heat perhaps heating air internally in the home would be better and quicker and also less power hungry .

 

[renewablejohn]

Suppose if you think of it like this a rule of thumb is a 10 kw per 1000 sq foot so unless you can produce something close to that you are wasting your time .There is a calculation of how much in volume a 1 kw etc immersion will heat to a certain temp and maintain it. Water is one of the hardest mediums to heat perhaps heating air internally in the home would be better and quicker and also less power hungry .

Whats that rule of thumb for a cannabis factory. The household energy usage I am used to working with is 1kw on a 24/7 basis with the excess stored in batteries to give a peak output of 5kw.

 

[Exfarmer]

Suppose if you think of it like this a rule of thumb is a 10 kw per 1000 sq foot so unless you can produce something close to that you are wasting your time .There is a calculation of how much in volume a 1 kw etc immersion will heat to a certain temp and maintain it. Water is one of the hardest mediums to heat perhaps heating air internally in the home would be better and quicker and also less power hungry .

Whats that rule of thumb for a cannabis factory. The household energy usage I am used to working with is 1kw on a 24/7 basis with the excess stored in batteries to give a peak output of 5kw.

That is the sort of capacity I have to heat my 3,500 sq ft house. 30 Kw gas boiler, but it only runs for a fraction of the time. Sadly never tried to assess the running time. It also supplies my hot water too.
My house is well insulated but relatively large to the average I guess, quite small to many farmhouses though.

 

[Exfarmer]

Just had a thought. on my gas bill it shows I used 28,670 Kwh of gas last year
This heated a 3,500 sq. Ft. house and an Orangery of 350 Sq. Ft. but this is only very sparsely heated
This equates to 78 kWh per day. 3 Kw per hour
however of course the bulk of the usage would be in the winter months November - Feb
so I think the figure of 10Kw is a pretty good estimate unless you like walking round the house dressed in thick jumpers and wooly underwear.
Did plenty of that as a kid in a draughty 10 bed farmhouse where only the kitchen and living room were heated, except for Christmas Day when a smoky fire was set in the Drawing room ( we were very posh of course )

 

[renewablejohn]

Just had a thought. on my gas bill it shows I used 28,670 Kwh of gas last year
This heated a 3,500 sq. Ft. house and an Orangery of 350 Sq. Ft. but this is only very sparsely heated
This equates to 78 kWh per day. 3 Kw per hour
however of course the bulk of the usage would be in the winter months November - Feb
so I think the figure of 10Kw is a pretty good estimate unless you like walking round the house dressed in thick jumpers and wooly underwear.
Did plenty of that as a kid in a draughty 10 bed farmhouse where only the kitchen and living room were heated, except for Christmas Day when a smoky fire was set in the Drawing room ( we were very posh of course )

I do like it when people start doing maths. So your actual usage is less than 1kw per 1000 sq ft.

 

[Mur Huwcun]

We’ve got an 8kw GSHP, worse I saw was it ran 16 hrs in a 24 hr period during beast from the east. It’s usually running 8 ish hrs a day in late Winter, lot less October, November, December. I can easily knock two hours off the running time at weekends or holidays if we run the log burner all day but then you kind of pay for it on Monday as the UFH has then got to play catch up. Our log burner is at wrong end of house so can’t use it to heat any water but will be looking into other ways once the RHI period comes to an end

 

[Exfarmer]

I do like it when people start doing maths. So your actual usage is less than 1kw per 1000 sq ft.

per day per year , yes.
To be fair there is just two of us living here.
We also virtually never heat the upper floor.
I would happily live with the house colder than my wife keeps it, but as fast as I turns the stats down ( we have individual room stats) she is round turning them back up

 

[renewablejohn]

We’ve got an 8kw GSHP, worse I saw was it ran 16 hrs in a 24 hr period during beast from the east. It’s usually running 8 ish hrs a day in late Winter, lot less October, November, December. I can easily knock two hours off the running time at weekends or holidays if we run the log burner all day but then you kind of pay for it on Monday as the UFH has then got to play catch up. Our log burner is at wrong end of house so can’t use it to heat any water but will be looking into other ways once the RHI period comes to an end

Cannot understand why you would go GSHP if your next to a stream as to me the stream would be the obvious heat source and far cheaper to install.

 

[steveR]

Aww i wouldnt know the answer to that without hirein a laser level. Also what is the best way to determine how much volume of water is flowin

Use a GPS. Or look at an OS map?

 

[steveR]

Cannot understand why you would go GSHP if your next to a stream as to me the stream would be the obvious heat source and far cheaper to install.

Very simple "ground" loop needed in comparison to a real ground loop. I assume a heat exchanger??

 

[steveR]

We’ve got an 8kw GSHP, worse I saw was it ran 16 hrs in a 24 hr period during beast from the east. It’s usually running 8 ish hrs a day in late Winter, lot less October, November, December. I can easily knock two hours off the running time at weekends or holidays if we run the log burner all day but then you kind of pay for it on Monday as the UFH has then got to play catch up. Our log burner is at wrong end of house so can’t use it to heat any water but will be looking into other ways once the RHI period comes to an end

Why? Moving hot/warm water is a doddle, it is the integration of alternative sources of heat into the existing GSHP/UFH system that seems to be the problem!

My RHI runs out next year, and although my engineer and I looked at installing a "new" system to start the RHI again, I could not deal with the bollix attached to such an application these days

I will probably put in an alternative heating system to the GSHP, possibly solar thermal to feed the exisiting heat stores and complement the PV. Might need to beef the thermal store to 5-600l mind.

Not interested in wood, as too much work.

 

[renewablejohn]

Very simple "ground" loop needed in comparison to a real ground loop. I assume a heat exchanger??

Yes a heat exchanger but can be as simple as coils of microbore copper pipe.

 

[t murrr]

There is a thought that the temp outside does never dip much into to minus figures .Last year we recorded minus 8 and us looking to get18 -20 indoors so that's a difference of 28 degrees I can tell you I will stick with my 35 kw boiler rather than go with solar etc .Also its generally colder in the winter and the daylight hours are much less leaving the solar less efficient. The cheapest source of heat could be a straw boiler .Now I know straw is expensive however I did look into heating our house with something like rush etc you could grow it on marginal ground and it would produce once dried heat which can be used .

 

[holwellcourtfarm]

There is a thought that the temp outside does never dip much into to minus figures .Last year we recorded minus 8 and us looking to get18 -20 indoors so that's a difference of 28 degrees I can tell you I will stick with my 35 kw boiler rather than go with solar etc .Also its generally colder in the winter and the daylight hours are much less leaving the solar less efficient. The cheapest source of heat could be a straw boiler .Now I know straw is expensive however I did look into heating our house with something like rush etc you could grow it on marginal ground and it would produce once dried heat which can be used .

I always fancied building a house into a hillside so only the windows were exposed. It would help cut heat losses as it never freezes below about 12" in the UK. It would also be cool in summer without needing active cooling.

Combined with controllable sunshades I reckon I could get energy requirement well down.

It'd be really cool to live in a genuine Hobbit House as well....

 

[steveR]

Yes a heat exchanger but can be as simple as coils of microbore copper pipe.

Way better than plastic I imagine at conduction Pretty sure I saw someone putting slinkies into a brook and pinning the pipework down 10 years ago. The advantage of plastic is less corrosion issues I guess...