Voltis Home -voltage optimiser - Anyone actually got one?

Cardew

Murchison2003 wrote: »

I fitted my Voltis Home unit approx 11 months ago and i have seen a remarkable reduction in my kwh usage.
I fitted a ground source heat pump approx 5 years ago as i was getting fed up by ever increasing fuel costs as i had initially installed an oil boiler as i have no mains gas. Over this past year i have seen an approx 18% reduction in my electricity bill, coincidence? don't think so. This thing does exactly what it says it's gonig to do in the brochure. Admittedly a normal household may not see the money savings as i have. Because i have a heatpump my annual consumption was approx 17500 kwh in total for the year, in the 11 months i have had it i have consumed approx 14000 kwh.
.

As i said in a previous post, i do have an above average usage of kwh per year which benefits me more, this is why i installed the machine, however i is still more beneficial than running heating oil ( annual consumption was 3000ltrs). The voltage coming into my property ranges from 245v - 248v and the voltage coming out is 221v.

As I understand it, the whole thrust of your posts is that because you have a heat pump, and now have fitted a Voltis voltage regulator, your consumption has dropped from 17,500kWh to 14,000kWh pa.

Can we just clarify. Are you claiming that the reduction of the house input voltage from 245v-248v to an output voltage from the Voltis of 221v enables the heat pump to produce the same heat output using 3,500kWh(20%) less?

Murchison2003

Cardew
The thrusts of my posts are that since i have fitted my Voltis, i have seen a definate reduction in my kwh usage every month since it was fitted. Having the heatpump obviously uses more electric than an ordinary domestic user hence why i am seeing the results. This is my whole electricity use not just my heat pump.
The initial question was does anyone have one and does it work.
My statistics say yes. If people want to bash it fine, i can't find any reason to.

Martyn1981

Murchison2003 wrote: »

Cardew
The thrusts of my posts are that since i have fitted my Voltis, i have seen a definate reduction in my kwh usage every month since it was fitted. Having the heatpump obviously uses more electric than an ordinary domestic user hence why i am seeing the results. This is my whole electricity use not just my heat pump.

Morning. Again, not knocking your actual/potential savings, but I think the reason a lot of people get upset when voltage optimisers are mentioned in a domestic situation, is that for a 'normal' household the potential savings are trivial. Clearly, for yourself, heat pump consumption is high enough for a 10% reduction in leccy to make it worthwhile (assuming the heat pump is not aware of actual voltage), but your situation is currently unusual in the UK.

Just having a ponder, but does your GSHP system have a heat meter installed. If so, you should be able to draw some conclusions from that - compare the heat supplied to the leccy consumed, this would help to remove the differing weather from your calculations. Strip out 'normal' leccy consumption, perhaps 4,000kWh and see if there's an approx 10% reduction.

Looking at my gas consumption (I have GCH) the last year 1/8/13 to 31/7/14 we consumed ~8,400kWh, against a 'normal year of ~11,000kWh. So significantly lower, down about 25% for heating. [Figures are total gas consumption, so also include DHW and gas oven.]

As an added bonus, it would be interesting to see the leccy consumption of the GSHP compared to the heat provided as that would give an actual COP figure ..... I think?

One last thing that does surprise me though is the size of your heating requirement. Assuming a COP of only 2, that seems like a lot of heat for a 'super' insulated property. I'm jumping to the conclusion that it's super insulated as you mention a MVHR, since these would do more harm than good in most 'regular' properties.

Mart.

Cardew

Murchison2003 wrote: »

Cardew
The thrusts of my posts are that since i have fitted my Voltis, i have seen a definate reduction in my kwh usage every month since it was fitted. Having the heatpump obviously uses more electric than an ordinary domestic user hence why i am seeing the results. This is my whole electricity use not just my heat pump.
The initial question was does anyone have one and does it work.
My statistics say yes. If people want to bash it fine, i can't find any reason to.

Well why not reduce the voltage even further and make bigger savings;)

Why don't you ring up the research departments of Mitsubishi and all the other Heat Pump manufacturers and tell them that you have discovered that conventional electrical theory is a nonsense and simply by reducing the input voltage to their heat pumps by 10% you can increase their efficiency by 20%.

You could be in line for a Nobel prize.

lstar337

Murchison2003 wrote: »

Istar 337
What you on about?

Usually people who post like you and disregard electrical principles, do so because they are making money from selling.

Got any snake oil to throw in with your voltage optimiser?

I have tried to keep 'facts, figures, & electrical theory' out of this post because I know you don't like them.

Murchison2003

Cardew / Istar 337
I'm not even going to rise to that, sorry, get a life

Cardew

Murchison2003 wrote: »

Cardew / Istar 337
I'm not even going to rise to that, sorry, get a life

What sort of life do you suggest? - Like selling products that we know(or should know) do not live up to their claims?


The one advantage of these threads is that anyone contemplating buying such a device, will find this thread if they 'Google'

lstar337

Murchison2003 wrote: »

Cardew / Istar 337
I'm not even going to rise to that, sorry, get a life

Rise to what?

I thought you asked me a question? Is it not more polite to reply than to just ignore you?

My knowledge of manners must be as far wide of the mark as my knowledge of electrical principles!

lstar337

Murchison2003 wrote: »

The thrusts of my posts are that since i have fitted my Voltis, i have seen a definate reduction in my kwh usage every month since it was fitted.

But your results are pointless because you have too many variables.

I suspect that if the same experiment were conducted under laboratory conditions with all the external factors removed, you would find no saving at all.

Basic physics more-or-less guarantees it!

Fruit_and_Nut_Case

Murchison2003 wrote: »

...get a life

The Urban Dictionary's definitions of "get a life". Worth a read.