wwhitney
Posts: 762
Joined: Sat Jul 17, 2010 10:10 am
Delivery Date: 01 Apr 2011
Location: Berkeley, CA

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Tue Aug 27, 2013 7:51 am

jclemens wrote:I initially used the same cheap pipe-insulation that is common, but I didn't really like it, plus the R value (insulation ability) is better on this metallic bubble wrap. According to the lowes website, this stuff is R4, vs the foam pipe insulation which is only 2.4
The manufacturer calls it R-4, but it is really only R-1.1 plus the radiant barrier. They are assigning a value of R-2.9 to the radiant barrier under some choice of standard conditions. But the value of that radiant barrier varies according to conditions. Anywhere it is up against another material, or anywhere it gets dirty, the radiant barrier has no insulating value.

Cheers, Wayne

EV1
Posts: 43
Joined: Sun Apr 07, 2013 1:50 pm
Location: The Netherlands

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Mon Sep 30, 2013 2:51 am

Thank you very much, BetterLeaf!
You just made this world a little bit better place :)

I was already working on option 3 (deluxe) and I can confirm that my "MosFET in the drawer", a ZVN 211 0A is NOT compatible with the schematic. Probably because the voltage on the gate is too low. But when searching in the drawer for another FET, I realised that I did not have al the possibilities with option3 as one would have with option 2. (for example: AC-compressor ON & heater-PTC "hard"-OFF)
So I went for an option 2 variation. I will post the pictures later.

Thanks again for sharing information!

EV1
Posts: 43
Joined: Sun Apr 07, 2013 1:50 pm
Location: The Netherlands

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Mon Sep 30, 2013 2:59 am

@ jclemens
Hope you didn't go to too much trouble putting that isolation on, because, to be honest, you should put the reflecting coating inwards, because its meant to shield/reflect heat.

hornstudio
Posts: 27
Joined: Tue Jan 22, 2013 4:02 pm
Delivery Date: 01 Jul 2013
Leaf Number: 010852

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Mon Sep 30, 2013 3:26 am

after insulation i stepped up from 4500 to 1800 in carwings although we have fall temperatures now and not summer anymore. not bad at all. :)

wwhitney
Posts: 762
Joined: Sat Jul 17, 2010 10:10 am
Delivery Date: 01 Apr 2011
Location: Berkeley, CA

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Mon Sep 30, 2013 6:53 am

EV1 wrote:Hope you didn't go to too much trouble putting that isolation on, because, to be honest, you should put the reflecting coating inwards, because its meant to shield/reflect heat.
No, the reflective side is only effective when facing an air gap. If you put it in direct contact with another material, then heat will pass via conduction. When facing an air gap, the reflective side will reduce the transmission of heat via radiation in either direction.

If the radiant heat source is external, it is easy to see that the reflective side will reflect back some of the incident radiant heat. But the reflective side also has a low emissivity--it is a poor emitter of radiant heat. So when the reflective material is hot, it doesn't lose as much heat by radiation as it otherwise would.

Cheers, Wayne

jclemens
Posts: 168
Joined: Mon Sep 05, 2011 7:37 am
Delivery Date: 02 Nov 2011
Leaf Number: 003748
Location: Mississauga
Contact: Website

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Mon Sep 30, 2013 1:31 pm

It is reflective on both sides.
and yes, there is an air gap (lots of gaps) between the hot fluids and the reflective insulation. The bubble wrap likeness also provides an additional airgap within the insulation.

If you have something better, please post it.
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PM me for details. or see http://erroneus.myevblog.com/buy-plastic-parts-here/

bowthom
Posts: 657
Joined: Sun Jul 18, 2010 12:22 pm
Delivery Date: 23 Feb 2011
Leaf Number: 307
Location: Portland Oregon

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Mon Sep 30, 2013 5:50 pm

I've been reading this thread and had an idea. Excuse me if someone mentioned it but I must have missed it.

Why not install a switch and resistor to set the outside temp sensor at 60*? The heater should not come on nor should the a/c if the temp is set to 60*

For us northern lattituders that would give us heat if we set the temp up a little and we can turn if off by adjusting down. Easy it seems.

It's not like our leaf needs ambient temp for any other purpose (like ICE FI density calculation).
Reserv Apr 20 - Ord Aug 31
Red - ETEC trim
BLINK inst 3/14/11 (rev 2.1.2B)
P1213 4/29/11 - Charger repl 6/8/11
P1273 2/15/12 - P32270 10/2/13
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Deliver 2/23/11 - 75k+ mi

jfsquires
Posts: 43
Joined: Fri Jul 02, 2010 2:05 pm
Delivery Date: 09 Apr 2011
Leaf Number: 0847
Location: Lake Oswego

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Fri Oct 04, 2013 12:21 pm

bowthom wrote:I've been reading this thread and had an idea. Excuse me if someone mentioned it but I must have missed it.

Why not install a switch and resistor to set the outside temp sensor at 60*? The heater should not come on nor should the a/c if the temp is set to 60*

For us northern lattituders that would give us heat if we set the temp up a little and we can turn if off by adjusting down. Easy it seems.

It's not like our leaf needs ambient temp for any other purpose (like ICE FI density calculation).
Seems like a good idea. Any idea how to do this?

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Ingineer
Posts: 2741
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Delivery Date: 13 Jul 2011
Leaf Number: 6969
Location: Berkeley, California
Contact: Website

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Fri Oct 04, 2013 1:58 pm

This will not work, as the LEAF considers the inside temp, and the temp of the heater coolant loop too.

Even if you could make it work, you'd end up with a bunch of hacked wires, and non-elegant extra switches that defeat the auto temp features.

-Phil
Easily Learn Electricity HERE! - - - - Website: http://evseupgrade.com/[/size] - - - - Like us on Facebook: EVSE Upgrade

EV1
Posts: 43
Joined: Sun Apr 07, 2013 1:50 pm
Location: The Netherlands

Re: Easy Climate Control Fan-Only Solution - 5 cents, 5 mins

Thu Oct 10, 2013 3:53 pm

Option 2 variant:
Image
I remove the pins from the connector to slide over the shrink tube.

The switch above the "gas"pedal
Image

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