SteamyTea

You need some of this, phononic crystals. https://www.popularmechanics.com/military/navy-ships/news/a14800/this-camouflage-coating-hides-submarines-from-sonar/

I think someone on here had it off him.

Looks very similar to what our Jeremy Harris originally used. He found the thermal losses very high.

That is the important thing. If GRP, then just a finding out what colour pigment, and what gelcoat the manufacturer used, then a bit of experimentation.

You may find that you are better off with a 200W wind turbine on a long pole. My sister runs a narrowboat business. I think she just has extra batteries to cover the times the boat is not used. They charge up pretty rapidly once the old motor is running.

It may still take a few hours to warm the compressor up. It is the compressor design/shortcomings that seem to be the problem. It is probably built down to a price, and to keep the warrantee/reliability it has to be constantly warm.

What power is it at the temperatures you are using?

You need lots of power to to lift it up. Microgeneration does not always supply lots of power.

The steeper the angles, more 'land' area is needed because of shading other modules. This is OK if you can moor the narrow boat with the bow or the stern pointing east, with ne set of optimally angles modules running the length. No good if it is turned 90° and al but one modules are shaded. You may have noticed that some large solar farms are set at quite shallow angles, the overall annual yield is greater, even though peak power is clipped. This has two benefit to the operator, they get paid more and can often keep below an export limit, which is based on peak power, not energy exported. One of the Birmingham universities made a solar powered narrow boat.

That is about what I use a day this time of year.

It's propane. B&Q will sell you 19kg for 51 quid.

Possible because we are going to 5G and the idea of centralised services is rather old hat. May need a nano cell, which an AP basically is, in some buildings, but was will all be totally wireless, just about everywhere, in the not too distant future. I can now get a signal at Porthtowan, the hippies must hate it.

Thinking back to when the FiTs system changed from 41p to 21p per kWh at short notice, it got challenged in the courts and the government lost. So hopefully this will be challenged in the same way for places that already have approval in place (or even better in the planning system before the rules changed). While I agree with the general principle of improving the environment, it has to be implemented sensibly, and 'offsetting schemes' are not the way to do it.

We get tomorrow's delivery prices every evening, and adjust our prices on a daily basis. Really horrible explaining to regular customers that what they paid last week is not the same as this week. Our cooking oil has gone through the roof, proteins more than doubled now, energy more than doubled (no price cap on commercial energy). Judging by the number of restaurants that have burnt out in St. Ives in the last 12 months, I suspect insurance will double. And the council have decided to charge for parking. Now £8 for a cheese sandwich where I worked last summer. 2 of our products are no longer available as well.

4.2 [kJ.kg-1.K-1] x 1000 [kg] x 1 [K] = 4,200 kJ = 1.167 kWh Now in winter, you may need to run your heating system at a higher flow temperature, say 45 °C and let the store drop no lower than 38 °C. So 7 K to play with. 7 [K] x 1.167 [kWh] = 8.169 kWh. To put that into perspective, my old storage heater, which takes a 3 kW load for up to 7 hours, can store 21 kWh. It is 1 m by 0.25 m by 0.8 m and weighs about 200 kg. OK, it only has a CoP of 1, but only cost a few hundred quid. Easy to wire into a simple control system to take excess PV. And it cannot leak. What kind of CoP does this 13 kW ASHP offer and what kWs does it deliver at 0° OAT?

It is kWh (energy) not kW (power). We really should deal in joules when we talk about energy. Gets rid of all the confusion. If you divide the kWh/day number by 24 (hours), you get the power in kW. If you multiple the kWh number by 3.6, you get the MJ number.

Half of what? Your space heating demand should have been dropping from mid thermal winter. Really worth getting a data logger that does internal, external and electrical usage.

That is a really good point. Can that be easily automated, so say between fixed times, all valves are open except DHW), or something appropriate.

It really comes down to how your house performs for each incremental degree of heating. One thing you do know about it your hot water, that you need every day, and probably about the same amount. Assuming you have the heating off at the moment, know is a good time to monitor that energy usage. You then have your ASHPs base load. Knowing that, you can play around with different times and tariffs. It is worth accepting that there may be times when it works out more expensive to run an ASHP at high loads i.e. when OAT are low. If you can identify those times, compare the running costs to turning down your flow temperature and plugging a fan heater in. It is all a numbers game. A fun one. And remember that mean temperatures can be plotted at a percentage of time they happen. Here is the Central England ones boing back to 1772

Pay everything with a credit card. I think businesses are going pop all over the place.

I can, but I went to Public School.

What's that then? Put everything on a timer. Midnight to 7AM. They will learn to live with it, 7,000,000 people have.

Titanium Dioxide usually.

Shane, you could have gone for a roof integrated system and saved on tiling.

The assessor can do it on the way home from his mistress.