Condensation vs Nuaire Drimaster
Discussion
skinnyman said:
Seems the heated model, with a sensor or 2, is almost twice the price of the standard one with the controls on the on the ceiling diffuser, so I'll probably just go for the standard model.
Just do what I did and get a standard model on a timer.ours is on through the night and mid day, keeps night time humidity well below 70%
xyz123 said:
Any one know if this can be supplied from lighting circuit in loft (via a 3A FSU) or it needs to be in the socket ring? If tha later it will mean a lot more work for us so trying to find out before buying.. Ta
It can be connected to a lighting Circuit using the supplied FCU. They supply a 1amp fuse.loughran said:
Can you tell me what advantage there would be to creating a positive pressure with a Nuaire fan rather than a standard inline extractor fan turned round and fitted with a variable speed control ?
It depends on quite a lot of things.The basic question is are you getting condensation?
I am getting condensation but my question is how does a Nuaire fan improve on a standard inline fan oriented to blow into the property in a similar way.
I understand that some Nuaire fans incorporate an element to heat the incoming air on cold days and this would be more difficult to mimic with a standard fan but given the general benefit of PIV seems to be to pump air into a property to drive moisture laden air out, can the same effect not be reproduced with a standard inline extractor which is reversed to blow air in rather than sucking air out ?
I understand that some Nuaire fans incorporate an element to heat the incoming air on cold days and this would be more difficult to mimic with a standard fan but given the general benefit of PIV seems to be to pump air into a property to drive moisture laden air out, can the same effect not be reproduced with a standard inline extractor which is reversed to blow air in rather than sucking air out ?
How would you reverse the fan?
Where would you get supply air from?
How would you filter it?
Can your fan supply 50 l/s?
If you can answer these questions then... maybe.
Edited to add-
Thinking about it a bit more. I suppose the real question you’re asking is can you make your own PIV system with parts you have or can source inexpensively?
The short answer is yes.
Will it be effective? Probably not.
Many other companies have copied the idea since the patents expired, so there is no reason why you couldn’t.
The thing is; Do you look at a new BMW 3 series (or whatever car you like) and think you could knock something better up in your shed with that spare pinto engine out of an old Cortina?
Where would you get supply air from?
How would you filter it?
Can your fan supply 50 l/s?
If you can answer these questions then... maybe.
Edited to add-
Thinking about it a bit more. I suppose the real question you’re asking is can you make your own PIV system with parts you have or can source inexpensively?
The short answer is yes.
Will it be effective? Probably not.
Many other companies have copied the idea since the patents expired, so there is no reason why you couldn’t.
The thing is; Do you look at a new BMW 3 series (or whatever car you like) and think you could knock something better up in your shed with that spare pinto engine out of an old Cortina?
Edited by robemcdonald on Wednesday 21st October 22:34
robemcdonald said:
How would you reverse the fan?
Where would you get supply air from?
How would you filter it?
Can your fan supply 50 l/s?
If you can answer these questions then... maybe.
Edited to add-
Thinking about it a bit more. I suppose the real question you’re asking is can you make your own PIV system with parts you have or can source inexpensively?
The short answer is yes.
Will it be effective? Probably not.
Many other companies have copied the idea since the patents expired, so there is no reason why you couldn’t.
The thing is; Do you look at a new BMW 3 series (or whatever car you like) and think you could knock something better up in your shed with that spare pinto engine out of an old Cortina?
I'm considering reversing the fan by turning it round to point inwards.Where would you get supply air from?
How would you filter it?
Can your fan supply 50 l/s?
If you can answer these questions then... maybe.
Edited to add-
Thinking about it a bit more. I suppose the real question you’re asking is can you make your own PIV system with parts you have or can source inexpensively?
The short answer is yes.
Will it be effective? Probably not.
Many other companies have copied the idea since the patents expired, so there is no reason why you couldn’t.
The thing is; Do you look at a new BMW 3 series (or whatever car you like) and think you could knock something better up in your shed with that spare pinto engine out of an old Cortina?
Edited by robemcdonald on Wednesday 21st October 22:34
I'm thinking that all the air I need is outside and can be accessed through a hole in my wall.
Filtering could, admittedly, be tricky but not impossible.
50 l/s is easily achievable with the type of inline fan intended for bathrooms In fact I might have to fit a speed controller to attenuate the flow.
Don't get me wrong, I'm not trying to usurp your corner of the market and achieve global fan domination, I was just considering getting a Flatmaster and wondered what your product's USP is and why wouldn't a home grown set up be as effective ?
I do like your idea of having an old Cortina engine in the loft but that comes with it's own problems.
loughran said:
I'm considering reversing the fan by turning it round to point inwards.
I'm thinking that all the air I need is outside and can be accessed through a hole in my wall.
Given that ventilation is of most importance during the winter months do you really want to be blowing cold air directly in from outside? The heat loss and impact on comfort could be significant. At least with something loft-mounted there is some tempering of the air.I'm thinking that all the air I need is outside and can be accessed through a hole in my wall.
Also factor in noise eg a larger fan running slow will be quieter than a smaller fan running fast, and with the reverse flow you will now be sitting on the 'loud' side.
Edited by MJNewton on Thursday 22 October 10:32
loughran said:
robemcdonald said:
How would you reverse the fan?
Where would you get supply air from?
How would you filter it?
Can your fan supply 50 l/s?
If you can answer these questions then... maybe.
Edited to add-
Thinking about it a bit more. I suppose the real question you’re asking is can you make your own PIV system with parts you have or can source inexpensively?
The short answer is yes.
Will it be effective? Probably not.
Many other companies have copied the idea since the patents expired, so there is no reason why you couldn’t.
The thing is; Do you look at a new BMW 3 series (or whatever car you like) and think you could knock something better up in your shed with that spare pinto engine out of an old Cortina?
I'm considering reversing the fan by turning it round to point inwards.Where would you get supply air from?
How would you filter it?
Can your fan supply 50 l/s?
If you can answer these questions then... maybe.
Edited to add-
Thinking about it a bit more. I suppose the real question you’re asking is can you make your own PIV system with parts you have or can source inexpensively?
The short answer is yes.
Will it be effective? Probably not.
Many other companies have copied the idea since the patents expired, so there is no reason why you couldn’t.
The thing is; Do you look at a new BMW 3 series (or whatever car you like) and think you could knock something better up in your shed with that spare pinto engine out of an old Cortina?
Edited by robemcdonald on Wednesday 21st October 22:34
I'm thinking that all the air I need is outside and can be accessed through a hole in my wall.
Filtering could, admittedly, be tricky but not impossible.
50 l/s is easily achievable with the type of inline fan intended for bathrooms In fact I might have to fit a speed controller to attenuate the flow.
Don't get me wrong, I'm not trying to usurp your corner of the market and achieve global fan domination, I was just considering getting a Flatmaster and wondered what your product's USP is and why wouldn't a home grown set up be as effective ?
I do like your idea of having an old Cortina engine in the loft but that comes with it's own problems.
To be clear the drimaster isn’t one of my products, so reducing sales will have little impact on my plans for global domination.
But to play along let’s have a look at some of your issues.
You say 50l/s is easy to achieve with an in-line fan. It really isn’t. You need to consider static pressure for a start. 50l/s at free air? Maybe with a filter and duct? Not so easy.
What type of fan are you going to use? Axial or centrifugal? What type of blade? Forward or backward curved?
What filters are you going to use? How are you going to make them easy to replace?
And then you need to consider noise and vibration...
robemcdonald said:
There is quite a lot more to it than you suggest.
To be clear the drimaster isn’t one of my products, so reducing sales will have little impact on my plans for global domination.
But to play along let’s have a look at some of your issues.
You say 50l/s is easy to achieve with an in-line fan. It really isn’t. You need to consider static pressure for a start. 50l/s at free air? Maybe with a filter and duct? Not so easy.
What type of fan are you going to use? Axial or centrifugal? What type of blade? Forward or backward curved?
What filters are you going to use? How are you going to make them easy to replace?
And then you need to consider noise and vibration...
I can see that having a fan in the roof space is a really good idea, it's going to be relatively warm and dry up there and the air introduced into the main house would be warmer and dryer than air brought directly from outside. Also having the fan in the loft will muffle a lot of the noise the fan may produce.To be clear the drimaster isn’t one of my products, so reducing sales will have little impact on my plans for global domination.
But to play along let’s have a look at some of your issues.
You say 50l/s is easy to achieve with an in-line fan. It really isn’t. You need to consider static pressure for a start. 50l/s at free air? Maybe with a filter and duct? Not so easy.
What type of fan are you going to use? Axial or centrifugal? What type of blade? Forward or backward curved?
What filters are you going to use? How are you going to make them easy to replace?
And then you need to consider noise and vibration...
I don't have a loft in my house so I'm thinking a Flatmaster is my only option. It'll bring air in through a hole in the wall and positively ventilate my house.
Plan B would to be to buy one of these.
https://www.screwfix.com/p/vent-axia-acm100t-21w-i...
Similar noise level to the Flatmaster at 22 db/3m. Plenty enough pressure at 61 l/s... a bit difficult to filter but then what are we actually filtering ?
Just thinking out loud.
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