scottishjohn

its not a matter of "tuning my way" i was looking for the biggest temp drop across the rad if you get that then you are getting the best from the rad . maybe they have improved them over the years

have exactly same problem with the sites I am looking at -the PP says 40metres each way and this a a "U" class road --eg a nearly a cart track with grass growing in the middle the bin lorry don,t even come up it and i don,t think there is a bit 80 metres long on it that is straight --you have put bins at bottom of road .# gates have to set back 6m --so you are not on road when you shut them and I have to make a layby to widen road as well. for a road that you could count the cars that use it on one hand

temp drop across the rad in real world will depend on how high the ambient room temp is. sure if room was very cold you might get much bigger temp drop .

good luck with getting that temp drop across a stelrad tsd unit got very anal about this when i had std heating in house spent many hours with 2 thermo couples on the in+out to rads and played about with pump speeds +boiler temps + adjusting flow valves to balance whole system best i could ever get was 12c drop across the rads for upstairs in modern house --maybe electrical heating mats are the way for the small time you will use them ?

sunamp is a a hot water tank --just much more compact+ much less heat loss than normal tank ,even a very well insulated one . that ,s how I understand it ASHP is a another way of heating water in a very cheap way compared to LPG and oil,and could be run from saved PV if you have battery system --in theory . your Off grid situation is the situation why I posted about the nexgen heating system ----maybe that could be a viable alternative for off grid. i have now come across an old ruin --which could be that way,off grid --about 10steps with the paraglider and i would be soaring at 200metres I asked in same thread about cost comparison of suspended wood floor verus insulated slab +ufh system. so far no replies for or against My gut feeling is that the costs would be in favour of the suspended floor +direct electric floor heating --if off grid and you are intent of going major pv + batteries

only one i have seen in use was in the hanibal lector film .LOl

spoke to a guy and after some grilling he told me not SAPS approved til later this year for new builds

so to take this further you are saying it is the uk produced blocks that have the problem ? I did notice in the russian videos the blocks looked very bad .LOL but maybe half the price ?

thank you have just given the evidence required from a someone who has built with them having talked to a few people and looked closely at vidoes of people building them you can see the variation in width couple that with info from a builder who has used them more than once who also mentioned same thing but up to 5mm difference ,without any prompting . no one mentioned to me that length or height were also variable --so i take on what you say It is enough to make me think it is a slightly annoying problem that is a continuing issue.. not a problem to someone going to hard render outside or inside --you can have one side happy the move to exterior cladding now is something they did not see when they were first designed 40years ago ? "time to their shit together" for the modern millimetre perfect house not a problem with other blocks --why theirs? I have 2 durisol blocks and I submerged one for a week in water -measured it -no change --dryed it out --still no change so nothing wrong with the blocks --just need to be finally trimmed at factory to be consistent in size would i use them ?-- IF price was right eg cheaper than the alternatives by a margin --yes and would get round problem

If we believe the hype then graphene is far more efficient then any other type of heating film will see what they have to say . what dif in price between suspended floor and big thick slab and insulated raft? could be just strip foundations then ?

could be a good solution for off grid with loads of PV and battery storage + suspended wood floors etc . will be very controllable ,quick to change temp + simple to install ,no plant room required I will send them an email and find out costs just out of interest and see how it compares in initial costs to ashp wet system

I was more thinking about the accidental cricket ball that no one owns up to hitting or throwing

https://eaglerenewablesukltd.com/nexgen-heating any body looked at these for using your PV work on 24v .

the general concenus is that durisol works fine -but make sure you decide which side of the wall you want flat --as they are not very dimensionally accurate in the width fine for height +length --but you choose which side you want flat if cladding then it will be the outside as hard plastering on inside will take out any differences Isotex would seem to be much better in that respect ,but you will see when you visit both

think you would have to tell your insurance co that you had them fitted at that price and wait for poke in the eye with the burnt stick when they say how much your premium is going up by

no

absolutly agree , but that in most cases is down to the operator not setting it up correctly or no baro /air temp correction in the software for the dyno, or not running on light load for enough time to warm up dif+g/box.and many dynos have very poor cooling fans and of course if you were on carbs ,not injection difference would be very noticable ,as no corrections for air +baro possible .std fan that they supplied with dynos were always only meant for quick run up not constant load for mapping an ecu in 256 spots to get repeatable results you need to keep everything the same as is humanly possible . i built mine more as a poor mans test cell with 7.5Kw 3phase furnace fan sat in front of car as well as cooling extractor fans on dyno retarder unit as well as another air extract fan for the whole cell +exhaust extract . there is a lot of heat in a dyno cell to get rid of you would not want to stand outside the car for long with a 60mph wind from furnace fan It was done So I could acurately check the mods we made to our own race car were actually an improvement ,running 1300c class -every bhp was worth the work to find it result 3 years in a row we won the scottish saloon car championship and 2 years the scottish sprint championship with our citreon 1294cc AX sport and also won our class in the 6 hour birkett relay race with 2 other ax,s at snetterton I did this very early on as i found you could not do continuous mapping because of the air temp and engine water temps rocketing and making a nonsense of the map you were writing even with air temp and baro corrections if it was injection early days you had to write ,then burn a chip -then carry on -- which is also why on most maps only a small portion was actually mapped rest was entered manually . for club race cars etc most did not need or want to pay for a full map but for road use then you have a lot more work to do the advent of cheap wide band lambda sensors etc and ecus that you could write directly too changed it for the better ,then being able to enter target lambda maps made it even easier . as you could drive it on rollers -then download the corrections the lambda had logged for partial throttle settings ,then not much time spent for WOT mapping --lot easier on the engine as well

maybe there are pollutants that are displacing oxygen in cities - I cannot say for sure but i can say for sure that the same car dynoed in the city will showmore power when same test @same ambient temp / baro pressure is done on a dyno of the same make outside a city . this discussion started regarding MVHR+air quality + need for it if occupants open windows on a daily basis, as my wife will do no matter if MVHR is fitted or not ,and for sure air quality is very much better outside major conurbations . it is strange that all air quality survey equipment -which you can get live data from show neither co2 or o2 contents,especially when the big cry about saving the planet is about lowering co2 (extraordinary claims ) --Not calling me a liar? - i am reporting what was observed on lots of occasions that's all

the chances of getting same constant error on 4 different units indifferent locations is very small ,and never did the country analysers show lower than city ones

accepted but on multiple visits over a period of a few years the same differences were seen every time

I cannot make comment on your quote ,or if you are really comparing like with like post up a copy of itemised quote ,then we can see who to avoid . nick from wales --would the man to give a balanced view on this could it be they sussed you out and it was "bugger off quote"

ASHP is definately the way to go I changed my heat source in an old 1970,sTF house I had already retro fitted UFH so all i changed was the heat source from lpg to ASHP result-house temp --just the same ,but running costs over £1000 a year savings going from lpg to ASHP dumped a £1500 lpg bill +electric went up by about £500 yes mains gas is cheaper than LPG -- by getting my EPC done for the rhi before i did all my insulation upgrades i got a very good grant -about £7k over the life of the grant --so it has ,or is paying for most of the work to change regarding MCS installation costs or indeed any contractor costs have you seen what an employer has to pay now!!! --its very expensive to employ staff maternity ,paternity ,pension contributions , etc etc even the "tea boy " needs £400 a week +NHI+pension costs -so it will be closer to £500 the employer spends you get £9 an hour for stacking shelfs in ALDI so don,t be too hard on contractors they not making that much of a killing lets face it thats where the major savings are in self build --labour costs but yes AHSP all the way not GSHP too expensive -not needed in this climate PV is a personal choice --not an economical return on investment now --IMHO

over heating basement ? not convinced there would be a problem in basement that's why wine cellars are in the basement -the ground around it keeps temp much more stable and you could always insulate under side of floor above to keep heat from radiating downwards

there is no calibration gas cylinder attached all the time , the service engineer brings that twice a year when he does his calibration tests ,used to be 4 times a year ,until they proved it was over kill