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Everything posted by SteamyTea
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Combined MVHR, heating and cooling.
SteamyTea replied to dnb's topic in Mechanical Ventilation with Heat Recovery (MVHR)
That reduces the solar gain to a certain extent. More in your case as you have rooms in your roof. -
In input dial limits the maximum temperature that the bricks get to. The higher the temperature, the more energy is stored, but also the more losses. But it does mean that more power can be delivered. There is generally a sweet spot for storage heaters. I set mine so that both dials are at 6 (half way). If I know we are in for a few days of extra cold weather, I turn the input one up. warmer weather, I turn it it down. Sometimes I forget, but soon realise and can then adjust with the output (flap) knob.
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Probably both, we live in enlightened times.
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It does, but as the area that strip covers is small, not much heat escapes. It is really to do with stopping the convection, not radiant heat. A radiator is really a convection heater. They would have to be glowing to radiate a decent amount of heat (opinion is divided here, but that is another subject). Just take it as read that this small, think strip, does stop most of the heat escaping during the charge up period.
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I use an old CurrenCost device with an optical sensor connected to a Raspberry Pi. I wrote the code myself, so not perfect, but it does work. I set one up at @Joe90 house. That one has the more basic and less accurate clamp on sensor. That is chugging along nicely and I can even remotely access it when I am parked in his drive. I have seen some designs for a basic optical meter, these read the red flashing LED and intend to make one up and see how good they are. The trouble with homemade stuff is that there is a lot of fiddling about to get the data off them as one needs to get them networked via the home router, or your phone.
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The strip reduces the airflow to almost zero, so no convection happens. The rest of the heat is insulated, so little is lost (they are warm to the touch, but not hot. So a small strip can reduce the overnight heating. Assuming that storage heaters are not faulty, they work incredibly well. As an aside, check your parents water heater. There are two elements usually, one at the top and one at the bottom. If the top one is switched on it can heat water anytime of the day or night. This gets expensive. Ideally just the bottom heater should be on as this is the Economy 7 one. It heats the water during the night and even if you only use water during the day, it does not get thermally recharged until the next night (usually between midnight and 7 AM, though this can be different in different areas). If you can read the meter, post up the numbers and that gives a fair bit of information. There should be 3 readings t= total, 1=day and 2=night. If you can also see the date the meter was installed (often just crayoned on the meter) then that is also useful. Some more modern and key meters give more information, but it should be fairly clear what is what.
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Not surprised the tenant left with a bog like that. I bought a house in a very hard water area (Aylesbury). The bog was like that when I moved in. I bit the bullet, put on rubber gloves, got a kitchen scourer and a bottle of Toilet Duck or similar, and just started scrubbing. Not the worse job I have had to to (that was cleaning out the spa bath filter from the YMCA Sheffield, I have no idea what those young men got up to). There were a few really sticky bits that needed to be sanded away with a pumice stone (which also got rid of the greeny blue streak on the bath a treat). Friends and family were well impressed with how clean I got everything. But they never shook hands with me again.
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Energized just means it is getting electrical power. The power for night storage heaters is from a separate circuit and is switched on and off by a radio signal receiver in the main meter. There are some very old systems that still have mechanical timers, but not many left now.
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I am not @ProDave but I use storage heaters and Economy 7 The type of tariff that you use does not change your energy use, it just allows you to time shift your usage to a time when the electricity is cheaper. This is why storage heaters are used. They store the energy for later, controlled release. If you took the bricks out of a storage heater, you would be left with a normal panel heater. Now imaging that this is a 1 kW panel heater and you need it on permanently. This would use 24 kWh of electricity and deliver 24 kWh of thermal energy into the room. At a normal electricity tariff of say 16p/kWh, that would be £3.84/day Now imagine if you can store the same amount of energy and still release it at a steady state of 1 kW. You still need 24 kWh/day, but you only get a 7 hours window to use it in. That mean you have to charge up at a higher rate, in this case 3.4 kW. A typical night rate for Economy 7 is 9p/kWh, so now that same energy is costing £2.16/day. The down side to this is that rather than having a day rate at 16p/kWh, it is charged at 22p/kWh. This is why, if on Economy 7, supplementary electric heaters are used during the day, the price seems very high. Getting the storage heaters working correctly is quite important when it comes to price. Storage heaters and Economy 7 have had a bad rap over the years, which I think is unfair. If they are used incorrectly i.e. flap always open, then they are in effect just a convecting panel heater and will cool off quite quickly. Once cool, supplementary heating is required and if that is during the day, then the price is high. It is why we hear stories of the house being hot in the morning and cold in the evening, and very high bills. One way to check what the balance between day and night usage is, is to look at the electricity bills or meter. If the day readings are similar to the night readings, then the heaters need setting correctly. As an example, nearly 90% of my electrical usage is during the night period. I have low bills and a warm house.
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I thought Goop was Gwyneth Paltrow's website that catered for the idiotic worried well. I have purposely uncoupled myself from her. Does this goop uncouple too?
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Downers work a treat.
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https://news.sky.com/story/alabama-man-fed-meth-to-caged-attack-squirrel-11744502
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I have basic storage heater and they are pretty simple inside. Spares are not always cheap, so shop around for them. You could look in the local paper for secondhand ones. They usually go for nothing (3 in the street in PZ last week, nothing wrong with them). Don't go for oil filled heaters, these don't store energy, they are just convection heaters. If heat is needed in an emergency, get some cheap fan heaters. They warm a place up very fast, are easy to move, and the noise is a reminder that they are on.
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The eyes have it, the eyes have it!
SteamyTea replied to ToughButterCup's topic in Project & Site Management
Scuba divers spit into their masks, finger it around, then rinse off. It works but I have no idea why. Do my shiny acrylic replacement lenses that were put in as replacements for my old cataracted ones count as safety lenses. Driving is safer now.- 10 replies
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- eye protection
- glasses
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(and 2 more)
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Is it covered in this: https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/518193/Guidance_on_Firearms_Licensing_Law_April_2016_v20.pdf Personally I would just make them all legal. If you want to catch squirrels, a trap is probably better.
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What would be your wishlist for a kitchen/diner?
SteamyTea replied to Powerjen's topic in New House & Self Build Design
The radiator manufacture should have a data sheet on what the power output is for different temperatures. Good place to start. -
Not unusual for a development company to rapidly increases sales just before a sell off. It is how venture capitalists make money.
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There is a reason that shipping containers are not used to make many houses. Foundations is not one of them.
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What would be your wishlist for a kitchen/diner?
SteamyTea replied to Powerjen's topic in New House & Self Build Design
Not as simple as that. Generally a heat pump works at a lower temperature than an ordinary boiler. That is why the radiators have a larger surface area. If the installation was gas or oil and the radiators were sized correctly, then new ones, with a larger area, would still be needed. -
Doubling the breadth does not make much difference. But probably be enough for your needs. Calculate it if in doubt. https://www.engineeringtoolbox.com/beams-fixed-both-ends-support-loads-deflection-d_809.html
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My local library used to get in any of the standards I wanted when I was researching. Not sure if they still do. May be worth asking there. They used to charge for photocopying, but at a reduced rate as I was a student. They never checked I was a student. I was in my 40s at the time.
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Plastics have been recycled for decades. We used to have large containers outside the factory for the vac formed off cuts and scrap. Prices varied by the type and colour, but it was always worth doing, and that was nearly 40 years ago. Really need a bit more information.
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Judging by your picture, it looked like you bathed in it. Are you auditioning for a part in Chernobyl.
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Quite the opposite, I did my BSc final year project in solar thermal. Since then, the world has moved on and in my opinion, PV is the way forward for domestic use.
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Post them up for us, just like the EDXCEL exams.
