Blobber
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If you can publish it when received that would be great, I can pass it on to the boss who is a tumble dryer addictI expect to be sent a paper on her workings early next year.
- Thread starter steveo3002
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Shox Dr
Chief Engineer to Carlos Fandango
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Some people must think washing line is more expensive than gold. Ive a mate, always skint, cant afford a washing line so has 2 tumble driers.If you can publish it when received that would be great, I can pass it on to the boss who is a tumble dryer addict
Yours too eh?If you can publish it when received that would be great, I can pass it on to the boss who is a tumble dryer addict
Blobber
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To be fair Mrs Blobber is ok, if stuff can go on the line it does, not many chances now the weathers turning and lots of damp doggies to dry, the house is old and prone to damp so really dont want damp washing hanging around as well
Trevorleach
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That would be really interesting to know.A friend of mine looked into idea of a heat pump tumble dryer, as her old tumble dryer is getting past it. After a bit of number crunching, and a spreadsheet, she calculated that the initial purchase cost, compared to power usage, drying time and efficiency (she does all her mil’s washing, so quick turnover is a necessity), and concluded that it would take way too many years to ‘break even’.
Her solution was to keep her old td, but now uses it sparingly, as she has just bought a new, top quality dehumidifier. She is keeping notes on the best combination of drying methods for economy and efficiency. I expect to be sent a paper on her workings early next year.
steveo3002
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update -
well i got one , a desiccant version , early days yet but it seems decent , ive ran it 2-3 hrs over night and you can feel the air is nicer , pulls a pint out over that time , will ramp up the use when ive checked how much leccy its using lol
well i got one , a desiccant version , early days yet but it seems decent , ive ran it 2-3 hrs over night and you can feel the air is nicer , pulls a pint out over that time , will ramp up the use when ive checked how much leccy its using lol
Gareth J
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Or, fit an MVHR unit spend the £2 on heat and keep £1 of it in the house instead of loosing it all out of the window.
Ours, a cheap and probably low efficiency one, in a small extension dries all washings summer and winter and keeps the rooms below 50% humidity. Cost buttons to run compared to a dehumidifier.
Wife has bought a Meaco Arete One (20l).
Set it up yesterday on landing, humidity was 83% at 5pm. Filled a tank by 6am this morning! (62% humidity).
Didn't need to Karcher Window vac the windows this morning.
I think she's set it at 45%, we will see if that's a bit optimistic and if 50 or 60 is "normal"?
Just had a look and tank is 4.8 litres!.
Looks a very well made bit of kit and well designed.
Bathroom door wouldn't shoot last nigh (swelled due to moisture?), closed perfectly this morning!.
Set it up yesterday on landing, humidity was 83% at 5pm. Filled a tank by 6am this morning! (62% humidity).
Didn't need to Karcher Window vac the windows this morning.
I think she's set it at 45%, we will see if that's a bit optimistic and if 50 or 60 is "normal"?
Just had a look and tank is 4.8 litres!.
Looks a very well made bit of kit and well designed.
Bathroom door wouldn't shoot last nigh (swelled due to moisture?), closed perfectly this morning!.
prepman
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During mild winter months they are a boone....it's win-win as you recover the heat from the moisture as you remove it. (Heat Pump) I have two types. One is a compressor model for in a warm environment and the other is a molsieve type (near silent) for cold evironments eg workshop.
I believe the compressor is the most economical, but useless at lower temps.
In cold weather the dewpoint (RH) is low naturally and unless you're creating a lot of of water vapour, it shouldn't be needed. I set mine at 70% RH.
Which is the upper limit to stop it getting really damp. Had at least one in use for the past 30yrs. More economical than opening windows, provided you already have adequate ventilation, Wood burner keeps ventilation good.
I believe the compressor is the most economical, but useless at lower temps.
In cold weather the dewpoint (RH) is low naturally and unless you're creating a lot of of water vapour, it shouldn't be needed. I set mine at 70% RH.
Which is the upper limit to stop it getting really damp. Had at least one in use for the past 30yrs. More economical than opening windows, provided you already have adequate ventilation, Wood burner keeps ventilation good.
MattF
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I've found 60% to be the best setting on mine. Keeps the moisture level at a comfortable level, but without having to run for excessive amounts of time. 55% & below is overkill, IMHO. I've tried that with the workshop one, (the smallest Arete model. 12L, I believe), & I end up emptying the tank daily, so now just keep it set on 60. I empty the tank every couple of days, on that one.
I use the 20L in the flat. It's also used to dry my laundry in there, which goes on a ceiling mounted rack.
Worth removing or not installing that HEPA filter, unless you need/want it, too. Quietens the unit down a bit, running without it, & it isn't in there restricting the flow. That fine mesh alone, on the rear cover, does a decent job of trapping dust.
The lower the humidity setpoint, the more it will cost to run, but the benefits of not having to redecorate as often, replace rusted tools, and the like, will offset the running cost. Keeping the humidity below 80% seems to be sufficient to stop the big lumps in the workshop from acquiring a patina. 60-70% feels OK indoors.
Gareth J
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Those who operate one continuously, worth digging around the back if the units, both mine have continuous drain functions where you poke a bit of 10mm pipe in the right place. Probably a bit trickier in a house unless you can run it on a utility worktop or something but in a workshop, a 10mm hole through a block wall will save messing about with gallons of water over winter.
MattF
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To start with, your *rse is practically puckering, imagining your leccy bill, isn't it.
Settles down within a few days though, once it starts maintaining that set level.Yeh I was a bit worried.To start with, your *rse is practically puckering, imagining your leccy bill, isn't it.
To be honest house feels a lot warmer with drier air and it does warm upstairs up as it's doing it's thing so I'm sure it's running costs will be partially offset with less heating requirements.
Rudi McAnichal
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Yes. Warming dry air takes much less energy than warming moist air.
