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Thermostatic switch/relay

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trigo(at)mail.telepac.pt
Guest

Posted: Sat Oct 08, 2016 3:47 pm Post subject: Thermostatic switch/relay

Guys 



I installed a couple of cooling fans in my RV-10 dashboard, actually copying other builders idea, to extract heated air from the back of the avionics, which is blown in the inside face of the windshield, thus also serving as a windshield defrost system.



I am planning to use a 3 position switch, off, on, and automatic, in which this last position is to be connected to a thermostatic switch/relay that will turn on the coolers only when the temperature behind the avionics reaches a preset or an adjustable temperature.



Will somebody please point me to such a thermostatic switch/relay, and a source for it.



Thanks

Carlos

user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Sat Oct 08, 2016 5:28 pm Post subject: Re: Thermostatic switch/relay

https://www.amazon.com/RioRand-Thermostat-Temperature-Controller-Waterproof/dp/B00KCCX0EE



https://www.amazon.com/12V-Digital-Temperature-Controller-Thermostat/dp/B00C4TEEF2



Make your own electronic temperature controller:

http://ww1.microchip.com/downloads/en/DeviceDoc/21448D.pdf



It will not hurt anything to leave the fans running continuously.

_________________
Joe Gores

ceengland7(at)gmail.com
Guest

Posted: Sat Oct 08, 2016 8:31 pm Post subject: Thermostatic switch/relay

On 10/8/2016 6:26 PM, Carlos Trigo wrote:

 	  Quote: 	
		   



 Guys



 I installed a couple of cooling fans in my RV-10 dashboard, actually copying other builders idea, to extract heated air from the back of the avionics, which is blown in the inside face of the windshield, thus also serving as a windshield defrost system.



 I am planning to use a 3 position switch, off, on, and automatic, in which this last position is to be connected to a thermostatic switch/relay that will turn on the coolers only when the temperature behind the avionics reaches a preset or an adjustable temperature.



 Will somebody please point me to such a thermostatic switch/relay, and a source for it.



 Thanks

 Carlos

I googled '12 volt thermostat'.
	


https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=12%20volt%20thermostat



The 1st one I checked says it will do both heating & cooling:

https://www.amazon.com/12V-Digital-Temperature-Controller-Thermostat/dp/B00C4TEEF2

Web site for it:

http://www.thermomart.com/index.php?route=product/product&product_id=149



Does that help, as a starting point?



Charlie

whodja

Joined: 27 Jan 2014
Posts: 50
Location: Apex NC (near Raleigh)

Posted: Sun Oct 09, 2016 4:41 am Post subject: Re: Thermostatic switch/relay

Another option from McMaster;http://www.mcmaster.com/#thermostats/=14irk9r

Mauledriver(at)nc.rr.com
Guest

Posted: Mon Oct 10, 2016 9:17 am Post subject: Thermostatic switch/relay

That's what I did - just have it on all the time.  Simplicity



On 10/8/2016 9:28 PM, user9253 wrote:

 	  Quote: 	
		   



 It will not hurt anything to leave the fans running continuously.



 --------

 Joe Gores





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=461109#461109




	




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trigo(at)mail.telepac.pt
Guest

Posted: Mon Oct 10, 2016 9:33 am Post subject: Thermostatic switch/relay

Well, it can be, but I am too sensitive to noise ...



Regards

Carlos  



-----Mensagem original-----

De: owner-aeroelectric-list-server(at)matronics.com

[mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Bill Watson

Enviada: Monday, October 10, 2016 6:15 PM

Para: aeroelectric-list(at)matronics.com

Assunto: Re: Re: Thermostatic switch/relay




--> <Mauledriver(at)nc.rr.com>



That's what I did - just have it on all the time.  Simplicity



On 10/8/2016 9:28 PM, user9253 wrote:

 	  Quote: 	
		   

 --> <fransew(at)gmail.com>



 It will not hurt anything to leave the fans running continuously.



 --------

 Joe Gores





 Read this topic online here:



 http://forums.matronics.com/viewtopic.php?p=461109#461109




	




---

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ceengland7(at)gmail.com
Guest

Posted: Mon Oct 10, 2016 9:51 am Post subject: Thermostatic switch/relay

Say what? Is there supposed to be a winking emotie after that statement?

If not, you might need to consider another hobby. 

Seriously, the big fan will hide the noise of any number of cooling fans 

you might install in/behind the panel.

Charlie

On 10/10/2016 12:31 PM, Carlos Trigo wrote:

 	  Quote: 	

 Well, it can be, but I am too sensitive to noise ...

 Regards

 Carlos

 -----Mensagem original-----

 De: owner-aeroelectric-list-server(at)matronics.com

 [mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Bill Watson

 Enviada: Monday, October 10, 2016 6:15 PM

 Para: aeroelectric-list(at)matronics.com

 Assunto: Re: Re: Thermostatic switch/relay

 --> <Mauledriver(at)nc.rr.com>

 That's what I did - just have it on all the time.  Simplicity

 On 10/8/2016 9:28 PM, user9253 wrote:

> 

> --> <fransew(at)gmail.com>

>

> It will not hurt anything to leave the fans running continuously.

>

> --------

> Joe Gores

>

trigo(at)mail.telepac.pt
Guest

Posted: Mon Oct 10, 2016 10:10 am Post subject: Thermostatic switch/relay

Hello Charlie



Yes, a friend of mine who happens to be a doctor (ear nose & throat) tells

me that I probably have a higher sensibility to some frequencies ...



And I don't like that noise when the big fan is not swinging.



Carlos  

-----Mensagem original-----

De: owner-aeroelectric-list-server(at)matronics.com

[mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Charlie

England

Enviada: Monday, October 10, 2016 6:50 PM

Para: aeroelectric-list(at)matronics.com

Assunto: Re: Re: Thermostatic switch/relay




--> <ceengland7(at)gmail.com>



Say what? Is there supposed to be a winking emotie after that statement?



If not, you might need to consider another hobby. 



Seriously, the big fan will hide the noise of any number of cooling fans you

might install in/behind the panel.



Charlie



On 10/10/2016 12:31 PM, Carlos Trigo wrote:

 	  Quote: 	
		   

 --> <trigo(at)mail.telepac.pt>



 Well, it can be, but I am too sensitive to noise ...



 Regards

 Carlos



 -----Mensagem original-----

 De: owner-aeroelectric-list-server(at)matronics.com

 [mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Bill 

 Watson

 Enviada: Monday, October 10, 2016 6:15 PM

 Para: aeroelectric-list(at)matronics.com

 Assunto: Re: Re: Thermostatic switch/relay



 

 --> <Mauledriver(at)nc.rr.com>



 That's what I did - just have it on all the time.  Simplicity



 On 10/8/2016 9:28 PM, user9253 wrote:

> 

> --> <fransew(at)gmail.com>

>

> It will not hurt anything to leave the fans running continuously.

>

> --------

> Joe Gores

>

art(at)zemon.name
Guest

Posted: Mon Oct 10, 2016 10:18 am Post subject: Thermostatic switch/relay

Wait... you're flying an AIRPLANE and you're worried about the noise in the cockpit from a fan???? Have you considered a glider? 



    -- Art Z. (only half kidding)



On Mon, Oct 10, 2016 at 12:31 PM, Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)> wrote:

 	  Quote: 	
		  --> AeroElectric-List message posted by: "Carlos Trigo" <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)>

 

 Well, it can be, but I am too sensitive to noise ... 	


-- 

https://CheerfulCurmudgeon.com/"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

trigo(at)mail.telepac.pt
Guest

Posted: Mon Oct 10, 2016 10:44 am Post subject: Thermostatic switch/relay

Yes Art

 

I also fly gliders, and must confess that glider flying is indeed the supreme flying experience!

 

No kidding

Carlos

 

P.S. – I must add that I’m still puzzled why we don’t care to reduce noise inside airplanes like the car builders have already done it

 

 

De: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Art Zemon

Enviada: 10 de outubro de 2016 19:17

Para: aeroelectric-list(at)matronics.com

Assunto: Re: Re: Thermostatic switch/relay

 

Wait... you're flying an AIRPLANE and you're worried about the noise in the cockpit from a fan???? Have you considered a glider? 

 



    -- Art Z. (only half kidding)

 

On Mon, Oct 10, 2016 at 12:31 PM, Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)> wrote: 	  Quote: 	
		  

--> AeroElectric-List message posted by: "Carlos Trigo" <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)>



Well, it can be, but I am too sensitive to noise .. 	


 



-- 

https://CheerfulCurmudgeon.com/



"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

ceengland7(at)gmail.com
Guest

Posted: Mon Oct 10, 2016 11:13 am Post subject: Thermostatic switch/relay

I don't think that we don't care; it's just much more difficult to achieve in an a/c. 



For perspective, several years ago one of the European auto mfgrs was looking at using active noise cancelling in the cabin of their cars. Their initial efforts at a (very complex, multi sensor, multi transducer) system seemed to work ok, and by their numbers, they would have been able to remove close to 100 lbs of sound reduction material from the car by using the system. This was on a car that sells for far north of $50K, and development costs would be spread over hundreds of thousands of units.

Now, if I try the passive noise reduction approach in my 1000 lb plane, I've added 10% to the empty weight, and I haven't yet added the additional 60-80 lbs of muffler/exhaust system that the car carries. Just not practical, unless you can afford a jet, and the weight it can carry. Even then, you're not likely to come close to a premium car in noise level.

On Mon, Oct 10, 2016 at 1:41 PM, Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)> wrote:

 	  Quote: 	
		  

Yes Art

 

I also fly gliders, and must confess that glider flying is indeed the supreme flying experience!

 

No kidding

Carlos

 

P.S. – I must add that I’m still puzzled why we don’t care to reduce noise inside airplanes like the car builders have already done it

 

 

De: owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com) [mailto:owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com)] Em nome de Art Zemon

Enviada: 10 de outubro de 2016 19:17

Para: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)

Assunto: Re: Re: Thermostatic switch/relay

 

Wait... you're flying an AIRPLANE and you're worried about the noise in the cockpit from a fan???? Have you considered a glider? 

 



    -- Art Z. (only half kidding)

 

On Mon, Oct 10, 2016 at 12:31 PM, Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)> wrote: 	  Quote: 	
		  

--> AeroElectric-List message posted by: "Carlos Trigo" <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)>



Well, it can be, but I am too sensitive to noise ... 	






 



-- 

https://CheerfulCurmudgeon.com/



"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

Mauledriver(at)nc.rr.com
Guest

Posted: Mon Oct 10, 2016 12:18 pm Post subject: Thermostatic switch/relay

I agree on the supreme experience but       there's nothing quiet about it.  Whether slogging around in a       drafty 2-33 or zooming about in a modern 18m racer with the       speed-to-fly audio constantly sounding off, it's noisy 

       

       Bill "who still gets airsick from the sound of a vario" Watson

       

       On 10/10/2016 2:41 PM, Carlos Trigo wrote:

     

      	  Quote: 	
		                         <![endif]-->   <![endif]-->                

Yes             Art         

          

I also fly gliders, and must confess that             glider flying is indeed the supreme flying experience!         

          

No kidding         

Carlos         

          

P.S. – I must add that I’m still puzzled why we             don’t care to reduce noise inside airplanes like the car             builders have already done it         

          

                   

De:             owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com)             [mailto:owner-aeroelectric-list-server(at)matronics.com (owner-aeroelectric-list-server(at)matronics.com)] Em               nome de Art Zemon

             Enviada: 10 de outubro de 2016 19:17

             Para: aeroelectric-list(at)matronics.com (aeroelectric-list(at)matronics.com)

             Assunto: Re: Re: Thermostatic             switch/relay         

                     

Wait... you're flying an AIRPLANE and             you're worried about the noise in the cockpit from a fan????             Have you considered a glider?                         

            

                        

    -- Art Z. (only half kidding)                            

                                 

On Mon, Oct 10, 2016 at 12:31 PM,                   Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)>                   wrote:                  	  Quote: 	
		                     

--> AeroElectric-List message                     posted by: "Carlos Trigo" <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)>

                     

                     Well, it can be, but I am too sensitive to noise ...                 	
               

               

                                                 

                

               

--                                                                                                

https://CheerfulCurmudgeon.com/

                           

                           "If                               I am not for myself, who is for me? And if                               I am only for myself, what am I? And if                               not now, when?" Hillel                     

                   

                 

               

             

           

         

       

     	
     



            	 		 			 				 			 		 		 			

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user9253

Joined: 28 Mar 2008
Posts: 1927
Location: Riley TWP Michigan

Posted: Mon Oct 10, 2016 3:24 pm Post subject: Re: Thermostatic switch/relay

Instead of buying a speed controller or thermostat, buy a fan that comes with a speed selector switch.  Let the buyer beware when it comes to manufacturer's claims of quiet.  Larger diameter and slower speed usually results in less noise.  A 120 mm fan will be quieter than an 80 mm fan.  Compare the RPM and Db ratings.  Computer fans are designed to operate at 12 volts.  They might run faster and make more noise at 14 volts.  The voltage can be dropped with a resistor or diodes.  The Antec TrueQuiet 120mm LED fan has two speeds and silicone mounting grommets.

_________________
Joe Gores

ashleysc(at)broadstripe.n
Guest

Posted: Mon Oct 10, 2016 5:47 pm Post subject: Thermostatic switch/relay

Hi Carlos;

One word: weight.

Cheers!   Stu.

From: "Carlos Trigo" <trigo(at)mail.telepac.pt>

To: aeroelectric-list(at)matronics.com

Sent: Monday, October 10, 2016 11:41:50 AM

Subject: RE: Re: Thermostatic switch/relay

Yes Art

I also fly gliders, and must confess that glider flying is indeed the supreme flying experience!

No kidding

Carlos

P.S. – I must add that I’m still puzzled why we don’t care to reduce noise inside airplanes like the car builders have already done it

De: owner-aeroelectric-list-server(at)matronics.com [mailto:owner-aeroelectric-list-server(at)matronics.com] Em nome de Art Zemon

Enviada: 10 de outubro de 2016 19:17

Para: aeroelectric-list(at)matronics.com

Assunto: Re: Re: Thermostatic switch/relay

Wait... you're flying an AIRPLANE and you're worried about the noise in the cockpit from a fan???? Have you considered a glider? 

    -- Art Z. (only half kidding)

On Mon, Oct 10, 2016 at 12:31 PM, Carlos Trigo <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)> wrote: 	  Quote: 	

--> AeroElectric-List message posted by: "Carlos Trigo" <trigo(at)mail.telepac.pt (trigo(at)mail.telepac.pt)>

Well, it can be, but I am too sensitive to noise ... 	

--

https://CheerfulCurmudgeon.com/

"If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?" Hillel

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