bgmill Posted February 20, 2022 Posted February 20, 2022 On 19/02/2022 at 13:26, JohnMo said: Priced and checked running cost, then went petrol Expand As it's for emergency backup I'm less concerned about running costs plus not having to worry about storing a decent supply of petrol does appeal to me.
Onoff Posted February 20, 2022 Posted February 20, 2022 On 20/02/2022 at 09:13, bgmill said: As it's for emergency backup I'm less concerned about running costs plus not having to worry about storing a decent supply of petrol does appeal to me. Expand Also, modern petrol can go off unless you put in an additive.
JohnMo Posted February 20, 2022 Posted February 20, 2022 You can buy a petrol from chainsaw supplier that does not go off. Intend to have some ready to go. 1
Ferdinand Posted February 20, 2022 Posted February 20, 2022 On 19/02/2022 at 21:36, dpmiller said: I note that the comments negating the likelihood of outages *aren't* coming from folk that live out in the sticks where power is HV *and* LV overhead... Expand They all have power cuts and can#'t log on ?
Roger440 Posted February 20, 2022 Posted February 20, 2022 On 20/02/2022 at 09:29, Onoff said: Also, modern petrol can go off unless you put in an additive. Expand This is why i bought a diesel genset.
Onoff Posted February 20, 2022 Posted February 20, 2022 Picking up the free storage batteries and controller tomorrow. No ideas what I'm getting! ? 1
SteamyTea Posted February 20, 2022 Posted February 20, 2022 On 20/02/2022 at 19:53, Onoff said: Picking up the free storage batteries and controller tomorrow. No ideas what I'm getting! ? Expand PP9s and a buzzer.
Russdl Posted February 20, 2022 Author Posted February 20, 2022 On 20/02/2022 at 19:53, Onoff said: Picking up the free storage batteries and controller tomorrow. No ideas what I'm getting! ? Expand Be sure to report back ?
SteamyTea Posted February 21, 2022 Posted February 21, 2022 https://www.bbc.co.uk/news/uk-england-somerset-60453727 Don't use four candles. Still, at least their fire brigade has a roof. Was told that one of the fire stations lost it's roof, along with the RNLI at Sennen Cove.
Russdl Posted February 12, 2023 Author Posted February 12, 2023 Have I found the answer to my problems in a power cut? This little rascal is the EcoFlow River 2 Portable Power Station. I can plug it in to the mains and then plug the MVHR into it. In the event of a power cut it will instantly take over (in 30ms according to the blurb) and run the MVHR. If I’ve got the maths correct and more importantly I’ve understood the electrickery bits properly it’ll run the MVHR on setting 2 for over 11 hours (standing by for being slated on both the above points…) It’s capacity is 256Wh and the rated power of the Brink on setting 2 (200m3/hr) is 23W. On top of all that, when I go wild camping (I don’t) I can take it with me to power the ghetto blaster for ages! Does anyone have any experience of the portable power stations? Is my planning sound? 3
ProDave Posted February 12, 2023 Posted February 12, 2023 So it was you we passed walking up Cairn Gorm with a gheto blaster on his shoulder spoiling the peace and quite was it? I would describe that as a UPS rather than a "power station"
Onoff Posted February 12, 2023 Posted February 12, 2023 Dunno, got this for nothing and even got two new batteries for it, for nowt, the other week. 500W. Just use it for the phone, answerphone and router. 1
Russdl Posted February 12, 2023 Author Posted February 12, 2023 @Onoff nowts a good price - nice one 👍 On 12/02/2023 at 20:07, ProDave said: So it was you we passed walking up Cairn Gorm Expand Unlikely. I would have been running. But how about the question, have I got the sums about right?
Nick Thomas Posted February 12, 2023 Posted February 12, 2023 Just as an aside, it's weird to call them passive houses when they require active ventilation. I'm sure it's not a novel observation.
Russdl Posted February 12, 2023 Author Posted February 12, 2023 @Nick Thomas fair point. Trades description act and all that. Passive ventilation is available but no good in a passive house as you throw all the heat away and get nothing in return.
Nick Thomas Posted February 12, 2023 Posted February 12, 2023 Heh. I'm currently reading about earthship-style "earth tubes" that apparently provide passive hx ventilation in cold climates A battery + MVHR is probably more pragmatic
Kelvin Posted February 12, 2023 Posted February 12, 2023 On 12/02/2023 at 19:49, Russdl said: Have I found the answer to my problems in a power cut? This little rascal is the EcoFlow River 2 Portable Power Station. I can plug it in to the mains and then plug the MVHR into it. In the event of a power cut it will instantly take over (in 30ms according to the blurb) and run the MVHR. If I’ve got the maths correct and more importantly I’ve understood the electrickery bits properly it’ll run the MVHR on setting 2 for over 11 hours (standing by for being slated on both the above points…) It’s capacity is 256Wh and the rated power of the Brink on setting 2 (200m3/hr) is 23W. On top of all that, when I go wild camping (I don’t) I can take it with me to power the ghetto blaster for ages! Does anyone have any experience of the portable power stations? Is my planning sound? Expand Yes my electric car. Technically meets the definition of a portable power station. I powered a 1600W concrete breaker from it on and off for 9 hours for several days. We also have a portable induction hob we use for camping. We had some builders at the farm in the summer and there was a power cut. I ran an extension cord for them to let them power their concrete mixer and charge their batteries. So yes your battery pack will work fine. The main thing is to keep it charged and to actually use it occasionally. Power cuts are infrequent after all. 2
Nick Thomas Posted February 12, 2023 Posted February 12, 2023 We're not super-rural here but we've already had at least six power cuts this year. None of them long, but it's not exactly inspiring confidence. Fortunately, I already have the battery and EPS-touting inverter; just need to add some wiring to make it useful throughout the house.
Russdl Posted February 12, 2023 Author Posted February 12, 2023 @Kelvin Thanks for that, the plan is that it will be plugged in 24/7 so fully charged all the time and only discharging to the MVHR in a power cut (or when I take it away for a day trip up some mountain somewhere). It would appear from the blurb that its was primarily designed for off grid use but also functions as power station, UPS, call it what you will. I think I’ll go for it.
SteamyTea Posted February 13, 2023 Posted February 13, 2023 (edited) On 12/02/2023 at 19:49, Russdl said: It’s capacity is 256Wh and the rated power of the Brink on setting 2 (200m3/hr) is 23W. Expand On 12/02/2023 at 21:19, Russdl said: have I got the sums about right Expand 256 [Wh] / 23 [W] The watts cancel out leaving the hours. 256 / 23 = 11 [h] Yes How much is it? Edited February 13, 2023 by SteamyTea 1
SteamyTea Posted February 13, 2023 Posted February 13, 2023 On 12/02/2023 at 21:27, Nick Thomas said: Just as an aside, it's weird to call them passive houses when they require active ventilation. I'm sure it's not a novel observation. Expand There is a purely unpowered, mechanical, solution, but looks dreadful. And rattle.
Adrian Walker Posted February 13, 2023 Posted February 13, 2023 On 12/02/2023 at 19:49, Russdl said: Have I found the answer to my problems in a power cut? This little rascal is the EcoFlow River 2 Portable Power Station. I can plug it in to the mains and then plug the MVHR into it. In the event of a power cut it will instantly take over (in 30ms according to the blurb) and run the MVHR. If I’ve got the maths correct and more importantly I’ve understood the electrickery bits properly it’ll run the MVHR on setting 2 for over 11 hours (standing by for being slated on both the above points…) It’s capacity is 256Wh and the rated power of the Brink on setting 2 (200m3/hr) is 23W. On top of all that, when I go wild camping (I don’t) I can take it with me to power the ghetto blaster for ages! Does anyone have any experience of the portable power stations? Is my planning sound? Expand For ~£300 it will give you comfort during power cuts and I’m sure you will find other uses for it during the year and yes the numbers work. 1
MikeSharp01 Posted February 13, 2023 Posted February 13, 2023 On 12/02/2023 at 21:34, Russdl said: Passive ventilation is available but no good in a passive house as you throw all the heat away and get nothing in return. Expand We have that as an option but it requires power to open the rooflights so won't work in a power cut.
Russdl Posted February 13, 2023 Author Posted February 13, 2023 On 13/02/2023 at 06:30, SteamyTea said: How much is it? Expand £269 the cheapest I’ve seen so far, so an expensive solution to a rare problem but it’s not a one trick pony which is what tempts me. 2
SteamyTea Posted February 13, 2023 Posted February 13, 2023 On 13/02/2023 at 07:37, Russdl said: £269 the cheapest I’ve seen so far, so an expensive solution to a rare problem but it’s not a one trick pony which is what tempts me. Expand If it was just for the MVHR, I would be tempted to buy a cheap inverter that runs of a leisure battery, which is on a trickle charger. But that is probably £200 quid in reality.
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