[Hai-users] Temperature & Humidity sensor

[Ray Manning]

My guess is that you're currently heating the air space in the house and not
the house itself if you need to "bump" the thermostat and be concerned with
drafts (unless they are major drafts like in my log home).

Radiant heat might be the best solution. Perhaps an infrared sensor to
detect the temperature of the surroundings might allow you to bump the air
temperature accordingly.

- Ray`

-----Original Message-----
From: hai-users-bounces at tssi.com [mailto:hai-users-bounces at tssi.com]On
Behalf Of Dan Barclay
Sent: Tuesday, November 01, 2005 2:10 PM
To: 'Paul | CSI'
Cc: 'HAI Users'
Subject: RE: [Hai-users] Temperature & Humidity sensor


Yea.  The suggestions I made probably wouldn't help with that.  I'd guess
you'd get more mileage out of accounting for direct sunlight (vs overcast)
and wind speed, along with outside temp.  An indirect indication of
heat/cool requirements may be *attic* temperature.

Humidity, even with infiltration, doesn't (shouldn't) change rapidly
indoors.  Well, I guess that depends on the definition of infiltration<vbg>.
If you get rapid humidity changes you may want to cut down on drafts to
reduce infiltration, and cold surfaces to reduce rapid condensation.

It sounds like you'll get a chance to experiment with this a bit.  If you
come up with something clever, let us know!

Dan

> -----Original Message-----
> From: Paul | CSI [mailto:paul2005 at cybernetics.ca]
> Sent: Tuesday, November 01, 2005 3:04 PM
> To: 'Dan Barclay'; satz at iranger.com
> Cc: 'HAI Users'
> Subject: RE: [Hai-users] Temperature & Humidity sensor
>
> What I am trying to accomplish is a more accurate way to anticipate
> temperature changes. The very nature of a Thermostat is to be reactive to
> ambient temperature but it doesn't take into account infiltration. In
> Canada
> we need to "bump" the thermostat a degree when it gets excessively cold
> (similarly with the a/c in summer). It's common to see a 100°F temperature
> swing between Summer and Winter - and that doesn't take the humidity into
> account. I'm just looking for some ideas and what others are doing to make
> the living space both comfortable and energy efficient at the same time (I
> know it is a contradiction).
>
> Paul
>
> -----Original Message-----
> From: Dan Barclay [mailto:Dan at BarclaySoftware.com]
> Sent: November 1, 2005 3:28 PM
> To: satz at iranger.com; 'Paul Whyte'
> Cc: 'HAI Users'
> Subject: RE: [Hai-users] Temperature & Humidity sensor
>
> I'm not sure exactly what you're trying to detect, but if you're looking
> for
> an indication to use for lawn watering you should have a look at the
> sensors
> used by irrigation equipment.  The ones I've seen are simple and reliable,
> using the swelling of leather washers to trip a switch.  Most lawn
> irrigation companies should have them available.  The indication isn't
> immediate, nor does it clear immediately.  It's actually intended to mimic
> the lawn.
>
> An indication of "is it raining rat now!" would be to use a moisture
> sensor
> on a sloped surface, or perhaps level in a vessel having a slow drain
> (being
> filled from a roof valley).
>
> Of course, how you do this would depend on what you want to do with the
> information.
>
> Dan
>
> > -----Original Message-----
> > From: hai-users-bounces at tssi.com [mailto:hai-users-bounces at tssi.com]
> > On Behalf Of satz at iranger.com
> > Sent: Tuesday, November 01, 2005 1:13 PM
> > To: Paul Whyte
> > Cc: HAI Users
> > Subject: Re: [Hai-users] Temperature & Humidity sensor
> >
> > You might be able to find a rain gauge that will give you a contact
> > closure. I don't know of any. Alternatively you would need external
> > access to a web site or a weather station that could provide that
> information.
> >
> > I am not sure why rain or snow would be an issue. You want to know
> > when it is higher regardless of the reason unless I am missing
> something.
> >
> > Thanks,
> > Greg
> >
> > > Here's a question for the dedicated programmers out there.
> > >
> > > I would like to incorporate some temperature code into a Pro2 that
> > > takes outdoor temperature and humidity into account. The problem
> > > with humidity is how to discern when it's raining or snowing (this
> > > would throw the
> > humidity
> > > values out of normal) - hence why it might be a good idea to just
> > > stick with temperature only. Any ideas or thoughts?
> >
> >
> > _______________________________________________
> > HAI-users mailing list
> > HAI-users at tssi.com
> > http://romaine.tssi.com/mailman/listinfo/hai-users
>
>
>



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