-
Posts
23387 -
Joined
-
Days Won
190
Everything posted by SteamyTea
-
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
That is odd as, with limited research, I was under the impression that scroll compressors did not have this problem, only the reciprocation ones. But at least you got to chat to someone that seemed to know about it. 6 kWh/day is double my current daily usage. -
Converting wooden workshop to office
SteamyTea replied to Adthrawn's topic in Garage & Cellar Conversions
Yes. It is probably there as a secondary rain screen. There is some confusion about wall buildups because, in the USA, they frequently do the opposite to us. This is because they air condition their homes and the outside air is hot and humid. Some say that we need to treat sheds the same as they are unheated and our external air has high humidity. But as soon as it becomes a heated area, then water vapour needs to escape. This is why the most vapour resistant later us on the inside and each additional layer is less resistant. Not too much of a real problem when the recommended airchanges and working temperatures are well controlled. -
Yes. Our compressor and tank was checked, every year I think. The small portable one was ok, think it was under 15 lt.
-
ASHP with large thermal store (for load shifting)
SteamyTea replied to apesort's topic in Air Source Heat Pumps (ASHP)
Work out your most likely thermal loads (you need to do this anyway) and then see what the capacity, in kWh, they can supply. -
Converting wooden workshop to office
SteamyTea replied to Adthrawn's topic in Garage & Cellar Conversions
I assume this is the rain screen, so should be ventilated and allow any liquid water to escape from the bottom. The idea, in the UK climate, is that humidity and temperatures are higher on the inside of the building. The insulation makeup, once past the VCL, is to allow water vapour to escape and evaporate. The living area is treated differently as that is usually serviced with natural, or forced ventilation, this reduces the amount of water vapour that can enter into the wall build up. Wind driven rain is stopped by cladding, and/or, an extra layer of liquid water impervious sheeting, but needs a gap between itself and the main structure. It effectively adds nothing to the insulation levels as air can easily travel behind it. Wind is stopped by the airtight barrier, on the outside of the structure, but before the air gap and cladding. -
Converting wooden workshop to office
SteamyTea replied to Adthrawn's topic in Garage & Cellar Conversions
Just becomes a standard wall makeup. So apart from plasterboard, everything is outboard of the VCL and gets more vapour open as you travel outwards. -
What sort of work do you do on it. A few Word documents, PDFs and a basic spreadsheet are not going goi worry it much. 7 million rows of Excel conditional sums might. As will heavy video editing. Best way to upgrade a PC us to downgrade the software.
-
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
What Steve Jobs said about Bill Gates. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
If Ritalin keeps small children quiet. Then Ritalin. Shame I am not allowed to smoke a joint in a cafe, I would be pretty mellow about the child centred parents trying to stop the little shits ruining everybody's lunch hour. (Disclaimer: I am against non legal and illegal usage of prescription drugs) -
Any guttering can get blocked. I would avoid any chance of that happening by not having the roof touch either property. You may have to change your door as well if it becomes a proper garage.
-
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
Those will be changed to Grote's. Or a stable crypto coin. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
One second is the time that elapses during 9,192,631,770 cycles of the radiation produced by the transition between two levels of the cesium 133 atom. But only with no relativistic effects I assume. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
Ah right. Yes, thought the / second may have been angular seconds. Getting hungry, need a quarter pounder, which is 417 calories per 0.37699 lb. Not sure if that is with cheese. -
ASHP with large thermal store (for load shifting)
SteamyTea replied to apesort's topic in Air Source Heat Pumps (ASHP)
Don't they do the lower transition temperature ones any more? I keep meaning to model this. You may be better off, overall, having high temperature input at the begining as the power transfer is better i.e. less time to increase the store by 1 K. Then increase the temperatures input difference as the store increases. As long as parity is not that close, and the HP has the capacity, and the store does not loose too much energy, it may be cheaper. Trouble is, reality is messy and and we cannot control the weather in advance of our space and DHW needs. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
Don't you mean pound-foot for torque. Force at a distance. Or were you talking about Moments of an axis. That Lsd we had in the early 70s, been replaced with Ritalin. Will be interesting to see how this government (expletive deleted) up changing back to imperial units. Will be using the erg before we know it. One pound, lifted one foot is 1.356 × 107 ergs. -
Converting wooden workshop to office
SteamyTea replied to Adthrawn's topic in Garage & Cellar Conversions
Have you considered heating/cooling and humidity control for when it is finished? This may change your wall buildups. Air2Air heat pump combined with a basic MVHR unit may be all you need. Basically make the inside airtight, then control that. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
So a 38 W heater, and 9 W. Total of 47 W some of the time. Or. That 38 W could be an average. But that would be a strange way to show it. -
ASHP with large thermal store (for load shifting)
SteamyTea replied to apesort's topic in Air Source Heat Pumps (ASHP)
And they store energy at a useful temperature. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
I was showing that a watt, divided by an hour, kW/h, is a nonsense unit. We have the joule to describe that. J/s/s =J. May email to them in the morning to clarify what they mean. They could mean that that mean power was 312 W when measured over a 24 hour period. Which gets us back to the starting point of this thread. -
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
They don't know what they are talking about. A watt is a joule per second. So if you divide 312 J/s by the seconds in a day (86,400 s) 0.00361 J There are 3.6 million joules in a kWh. To convert joules to kWh, multiple by 2.777778x10-7 1.0027777778x10-9 kWh A number so small, it is meaningless. I often get messages to stop being finickity about SI units. This is the reason I am a complete (expletive deleted) about them, to stop people getting confused. Learn the units, and the derived units i.e. W, J, kWh, then you can spot nonsense quickly. It is W, for watt, not Watt, that was the man, or w, that is, when italiced, often used for angular momentum. Similarly, J is for joule, Joule was the man, lower case j is used by engineers, in mathematics (not a science) for an imaginary number, it should really be i, for imaginary. -
The Natural History Museum is good, they have stuffed pets there. Not far from the Red Lion at Marsworth and Ivinghoe Beacon where there really are wild wallabies.
-
Ecodan standby power consumption
SteamyTea replied to LA3222's topic in Air Source Heat Pumps (ASHP)
Over how long? An hour, day, week, month, year, decade? -
Clean Air Act 2022 - Wood burner not compliant?
SteamyTea replied to Andeh's topic in Stoves, Fires & Fireplaces
The same Attenborough who, for 30+ years was a climate change denier, then had a Road to Damascus moment about 13 years ago. Now he makes a very healthy living out of flying around the world, with a film crew, spouting how the rest of us are not doing out bit. Out of interest, if we had population control, how would we deal with the future needs of the current population? -
Happened in Penzance a couple of weeks back. Range Rover turns up, lad gets out with machete, slashed a couple of local dealers, then runs away. Then the range Rover driver drives off. Not the brightest of revenge attacks as the security cameras are on that bit of road as it is a holiday route.
-
ASHP with large thermal store (for load shifting)
SteamyTea replied to apesort's topic in Air Source Heat Pumps (ASHP)
As the temperatures reach parity, power is reduced in a non linear manner. So you need a temperature difference to reduce the time it takes to heat. Look up Newton's Law of Cooling (it works for heating as well).
