Electric boiler

Cardew

Andy_WSM wrote: »

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It is also possible of course to pay for a green tariff, which I and many others do.

I obviously understand the principle, but some people think that a 'green tariff' somehow ensures you are fed with a separate electricity supply with all the 'nasty' FF generated electricity filtered out;)

Andy_WSM

Cardew wrote: »

I obviously understand the principle, but some people think that a 'green tariff' somehow ensures you are fed with a separate electricity supply with all the 'nasty' FF generated electricity filtered out;)

The same people that would pay to only have Buxton Spring water coming out of their taps I presume?

I've not seen a post suggesting that people believe that on here to be honest, but nothing would surprise me anymore. The dumbing down of the nation continues one Daily Mail article after another.

Martyn1981

KeithElliott wrote: »

Advice please...

We have a perfectly good grant vortex oil fired boiler, about 7 years old and serviced every year. It runs our central heating and hot water without any issues.

But we don’t like oil, we don’t have mains gas and don’t fancy a Calor tank again (had one before the oil boiler).

I get where you are coming from, you want to go greener, and so heating your house by burning 'diesel' is hardly ideal.

So, have you considered ASHP for you needs? The RHI grant should repay the cost over about 7yrs, and in the UK the average COP for ASHP is about 2.9, so you would be using 1/3rd of the leccy v's an electric boiler, and also your 'fuel' cost would be the same as oil or gas, or even cheaper when using E7.

If you haven't already, you might want to think about PV too. It won't generate as much in the winter as the summer, but you'd still get some and this would help with your cooking etc during the Summer, provide the leccy for the ASHP for hot water in the warmer months, and might, if big enough, just be able to provide the majority of the leccy for heating in the shoulder months (Mch, April, May & Sept, Oct).

G_M

The other problem with grid electricity, apart from the % based on fosil Vs green sources, is transmission. It's hugely unenvironmentally efficient.


If you are serious about using electricity for environemtal reasons, invest in solar and heat pumps ( and/or wind if feasible) and geneate your own on site.

Gerry1

Martyn1981 wrote: »

the average COP for ASHP is about 2.9, so you would be using 1/3rd of the leccy v's an electric boiler, and also your 'fuel' cost would be the same as oil or gas, or even cheaper when using E7.

How do you store all the heat that you produce overnight? :huh:

Perhaps there are some Fischer wet radiators filled with capsules of magic crystals with mega-high latent heat !

A._Badger

Andy_WSM wrote: »

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That's simply not true any more. Maybe 5 years ago it was.

3% coal right now and 35% gas. The rest is "green" in one form or another. So "the most part" is not fossil fuels.

A week ago there was an excess of wind and nearly zero fossil fuels on the grid. As time goes on this can only get better. It is also possible of course to pay for a green tariff, which I and many others do.

You can see the current grid generation and consumption data here.

Christmas Day, prime turkey roasting time. The percentage of wind generated electricity? 2.66% - 0,88GW according to Gridwatch.

Smcgarry1992

Hey guys! I desperately need help and I don’t know how to post a forum so apologies for jumping on this one. My aunts boiler (Oil) has went on fire and been condemned, she is a home owner who lost her job due to ill health ( Tumour on the brain) so she relies on benefits I have no idea what help is out there I know she can get £700 towards a replacement but she doesn’t have the funds to pay the remainder any advice on what I could do to help? Or if there is any additional help available? Thank you so much and Merry Christmas everyone

Martyn1981

Gerry1 wrote: »

How do you store all the heat that you produce overnight? :huh:

Perhaps there are some Fischer wet radiators filled with capsules of magic crystals with mega-high latent heat !

In a giant thermal battery, perhaps constructed from bricks and mortar?

Wet system heat pumps produce hot water at a much lower temp around 40-45C, v's perhaps 70-80C for conventional boilers, so they are operated over a longer time period, even 24/7.

They can be especially useful when used for underfloor heating where the 'slab' will warm up over time and help to heat and regulate temps.

Andy_WSM

A._Badger wrote: »

Christmas Day, prime turkey roasting time. The percentage of wind generated electricity? 2.66% - 0,88GW according to Gridwatch.

So? I was replying to the point that was stated saying our electricity nowadays is produced "for the most part by fossil fuels".

Boxing day,
33% wind

Coal 1%,
Gas 26%.

27% fossil fuels, so not "the most part", which was the original point.

Of course it will vary day to day until the mix is favoured towards renewables and grid storage, which WILL happen.

Gerry1

Martyn1981 wrote: »

In a giant thermal battery, perhaps constructed from bricks and mortar?

Wet system heat pumps produce hot water at a much lower temp around 40-45C, v's perhaps 70-80C for conventional boilers, so they are operated over a longer time period, even 24/7.

They can be especially useful when used for underfloor heating where the 'slab' will warm up over time and help to heat and regulate temps.

But that sounds much like the original night storage heaters ! No doubt it was nice having a warm house 24/7 when electricity was cheap as chips in the 1970s, but that represents a lot of wasted energy, hence the development of Dimplex Quantum and suchlike which minimise wasted output overnight.

Seems to me that having to warm a house for much longer than is needed will negate much of the benefits of E7 and heat pump efficiencies. If a heat pump is running 24/7 the fact that the E7 daytime rates are higher than they would be on a single rate tariff will also play havoc with the cost savings.