SteamyTea

Had forgotten about this, he eventually got back to me saying "too far". @magutosh Did they do all the heat load calculations and how does it compare to your SAP/EPC numbers. And how did the system sizing compare to other systems?

That is true for any heating system though. This is such a misunderstood point that it has become binary. You need to define the question better. If two matching capacity systems were fitted to two identical properties that where in the same climate regime, with the only difference being the fuel source, you may well get different operating hours, but that tells you nothing. Take E7. By its very nature it only operated up to 7 hours in any 24. Compare that to a gas system that may run for 18 hours, or 1. You have learnt nothing about efficiency, running costs or comfort levels. May as well ask how often a front door can be opened when buying one.

I was commenting on your tactic in arguing a point. You pop us as soon as people mention HPs, and tell them they are useless, then come along with a barmy solution to justify your stance. That is known as trolling. Now get a grip, read some stuff and learn.

You are deflecting from the argument, you are supporting Hydrogen, a typical troll tactic. Are you going to claim that all pipework will need to be replaces next? ASHPs cannot be used in flats, that they kill kittens and give old ladies an attach of the vapours. Keep on track, read the latest research and developments in operating modern heating systems, and the cost of equipment, it is hardly new technology, been around decades. The same people that pay for energy, us. Where do you think money comes from?

Or to turn on heat pumps, large industrial refrigeration, charge batteries, planned maintenance shutdown on other generation. You just don't understand the inefficiencies of hydrogen, it is like shutting down half your generation capacity. When a wind or solar farm is designed, there are two numbers that are used. Installed Capacity, MWp Generation Capacity, MWh. They are different, but both are known, it does not come as a surprise when night falls that PV stops generating, or that wind is variable. Because these things are known, the actual estimates are very accurate. You can, if you care to, look up the day ahead estimates and see how good they are. But you won't.

Ha Ha Ha Ha Ha Ha

You can easily look up how much energy a house uses, then calculate the size of heat pump needed. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/946419/Sub_national_electricity_consumption_statistics_2005-2019.xlsx https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/946437/LSOA_domestic_gas_2010-19.xlsx All the information is there if you care to look. My house is 'Pre Millenium' and I use less than 2 MWh/year for heating. Are you saying that it is impossible for a house like mine to be heated by an ASHP? My last buy one house was a large, 3 story, end terrace Victorian place. The gas boiler in there was 30 kWh. You can buy a 30 kW ASHP. Or buy 2 15 kW, which means you can use jut one for DHW heating (it could even be a 20 kW and a 10 kW). You really need to keep up with the technology rather than have the 'a Morris Minor was a great car, if they made it today they would have a winner'.

With a CoP of 3 or more. So Hydrogen, created from RE, but burnt in a gas boiler will probably give you CoP of 0.3, maybe 0.4 if fed into a fuel cell. RE generation may loose 8% on the way to the end user, and a battery may loose another 15%, so a CoP of 0.77, then the HP taking 50% of the energy but working at a CoP of 3 gives you 2.31. Overall that will be a 1.54 multiplication factor.

Don't think it is, I posted up the government report on it. Here is a bit from my favourite comic. "One stumbling block any hydrogen energy revolution faces is storage and transport. Hydrogen molecules are so small they can leak out of containers, meaning pipe networks previously used for methane may have to be upgraded before they are fit for hydrogen." And that is before the inefficiencies are taken into account. It is much easier and cheaper to reinforce the local electricity grid than the gas grid. I think people have a desire for hydrogen because it is similar to what we already have, but this is missing the point completely. And if you combust hydrogen in air, you get oxide of nitrogen as well as water. Nitric acid is not nice stuff. Makes sulfuric and carbolic acid seem as mild as soap.

You keep saying this. But where is your evidence? Put the wrong size system in any house and it will perform badly. The main reason for government subsidies had little to do with the high cost of the equipment needed, if was more to boost the government at the time (Cameron's) green credentials. It has probably increased the cost of installation, why many on here have just gone out and bought the kit and fitted it. Ah, the hydrogen economy, why would you do it. As I have said before, it is like putting 10 gallons of gasoline in your car, then taking 4 out and pouring them down the nearest drain. Hydrogen will be the niche product.

@Dave Jones has a hatred for heat pumps, but will never quantify his assertions.

ju5sth8alvedi2nva6lue Have another.

kdj6c3o9e3j74cdjld55o0ihkvhdow39mr That is a titcoin for you.

Only if you choose the care home well.

"It is a wise man that knows his father." Think that sums it up nicely.

No. Same with 'thin film'. There is, in practice, not enough performance difference. Depending on how far the inverter is from the consumer unit, going up a cable size would have a similar performance boost.

I prefer the term Pygmies.

They help stabilise prices as well. It may not be at the price you like, but it is a known price. Arbitrage does a similar thing, by buying at a cheap price somewhere, then selling at a place that can support higher prices, both sides benefit. Now speculators are a different kettle if fish, they buy at distressed price, or buy up the complete supply, then will only sell at the price they have decided on. They try to control, and distort, the market place.

As our mascot. We don't have gypsies, we have piskeys.

By a charity?

The Inverter seems cheap. Nothing wrong with the model chosen. I cannot find one that cheap on AliExpress. Is a 1 at the beginning of the price missing?

Is that what we used to call 'out of stock' or 'unavailable'?

The FAO has a number of reports and tools. I would never have though that the UK was the 3rd biggest importer of sawn wood and the 4th biggest importer of wood panels. But we are the 2nd biggest exporter of recovered paper. http://www.fao.org/forestry/statistics/80938@180724/en/

Has your DNO given you permission to connect 6 kWp to their grid?

20 quid, no wiring needed. https://www.ebay.co.uk/itm/233948650894