Re: Re: Flow switch recommendations - and integration to HA server

[Stephen Blomley <eg@xxxxxxxxxxx>]

Hi Noel,

I was looking through the instructibles web site and came across the
following project which may be of interest for part of ' thing 1' in your
mail.


http://www.instructables.com/id/Low_Cost_Water_Flow_Sensor_and_Ambient_Display/



The detection part of this project could be used in preference to a flow
meter, particularly as it would not involve cutting pipes and risking the
flow rates to the shower head, it may be cheaper too.

For added interest (not KiSS) subsequently detecting when the humidity in
the room drops below a threshold (post-shower) to signal the event when the
mirror heat pad needs switching off (No more water mist). In fact between
these two detection events you could, with a suitable delay for warming up
the shower cubicle, turn on the extractor fan as well.

Just an idea.

Stephen

On Thu, Mar 4, 2010 at 8:06 AM, noel <noel@xxxxxxx> wrote:

>
>
> Hi all,
> Reviving this one as I'm finally looking to buy one, due to speak with
the
> company this morning re the flow restrictions, one further question
though.
>
> I'd like to use the flow switch to do two things:
>
> 1 - Turn on my mirror heat pad
>
> 2 - trigger an increase in volume through my HA server (music needs to
be
> louder when showers on), to do this I'll need to get something that
can
> bring inputs into the server unless I can do something clever
wirelessly
> with x10 or similar?
>
> How would I go about doing both of these from the same flow switch,
and any
> thoughts on how I could achieve the second one?
>
> Thanks
>
> Noel
>
> --- In ukha_d@xxxxxxx <ukha_d%40yahoogroups.com>, Tim Hawes
> <timsyahoo@...> wrote:
> >
> > It depends on what flowrate your combi can deliver... They have a
> > maximum heat output which usually corresponds to a stated
temperature
> > rise at a specific flowrate. Higher flows will result in less
> > temperature rise, lower flows in a higher temp rise of the water.
> >
> > One parameter missing from the datasheet is the pressure loss
consumed
> > by having the flow switch in the line - as you're adding a
restriction
> > it will reduce the pressure at the shower head, knowing what that
loss
> > is will help in the decision-making process :-)
> >
> > HTH somewhat,
> >
> > Tim.
> >
> >
> > On Fri, Dec 25, 2009 at 7:58 PM, noel <noel@...> wrote:
> > > Hi all,
> > > looking for advice on flow switches,  http://tinyurl.com/y9ff6gc
> > > this one seems to say max flow rate of 20litees/min, surely
that's not
> enough for a good domestic shower fed from a combi boiler?? Looking to
> trigger mirror heat pads when the shower comes on.
> > >
> > > Bearing in mind it's Christmas day and I'm posting on here,
in my
> defence I'm now funds approved to start buying for the bathroom!!!
> > >
> > > Any advice gratefully accepted,
> > >
> > > Thanks
> > > Noel
> > >
> > > Ps happy Christmas all
> > >
> > >
> > >
> > > ------------------------------------
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> >
>
>
>


[Non-text portions of this message have been removed]



------------------------------------

<*> Join the Automated Home Forums
http://www.automatedhome.co.uk/vbulletin/