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Search: Posts Made By: Fornax
Forum: Appliances & Gadgets 11-16-17, 10:50 AM
Replies: 29
Views: 3,793
Posted By Fornax
I agree with many of the above comments. ...

I agree with many of the above comments.
Integrated graphics will do if you don't game a lot or only watch youtube. If you do need discrete graphics go for the mentioned 750(TI), 950 or the 1050....
Forum: Conservation 07-04-17, 03:45 AM
Replies: 568
Views: 570,295
Posted By Fornax
I watched all the videos and that was an hour of...

I watched all the videos and that was an hour of my life well spent!

You impress me with how thought through the design is with all the controlls of the various valves and airpathways and the...
Forum: Conservation 08-24-16, 02:10 PM
Replies: 568
Views: 570,295
Posted By Fornax
Hoi Tinco, Just a short reply for now, I'll ...

Hoi Tinco,

Just a short reply for now, I'll go in more detail later.



The fan you picked can do 180 m^3/h indeed, if it has to overcome no presuredifference at all. With a difference of...
Forum: Conservation 02-06-14, 02:33 PM
Replies: 568
Views: 570,295
Posted By Fornax
Hi All, As I told Kostas above I did build a...

Hi All,

As I told Kostas above I did build a new HRV using a heatexchangercore I
ordered readymade. It's the exact one some commercial brands are using
in their commercial HRV's and the specs...
Forum: The Billiards Room 02-03-14, 03:43 PM
Replies: 21
Views: 4,126
Posted By Fornax
May I bring to mind that in your area winter is...

May I bring to mind that in your area winter is indicated by your calendar and perhaps a certain feeling of briskness.

If you want some snow you could contact my in-laws who live in Michigan. ...
Forum: Conservation 06-30-13, 01:40 PM
Replies: 568
Views: 570,295
Posted By Fornax
...continued Hi All, I found a dutch...

...continued

Hi All,

I found a dutch company, Recair, that produces recuperators out of polystyrene.
Their heatexchangers are very efficient and of course they are counterflow. The internal...
Forum: Conservation 06-30-13, 01:19 PM
Replies: 568
Views: 570,295
Posted By Fornax
Hi All, A while back I discovered that the...

Hi All,

A while back I discovered that the HX-core in my HRV is not as efficient as I expected it to be and I found the cause. It comes down to the choice of material.

The plates are made of...
Forum: Conservation 04-30-13, 02:31 PM
Replies: 568
Views: 570,295
Posted By Fornax
I aquired and installed 4 thermometers with good...

I aquired and installed 4 thermometers with good resolution so now I have somewhat reliable numbers on how my HRV performs.

The thermometers I got are discussed here...
Forum: Conservation 04-18-13, 02:14 PM
Replies: 568
Views: 570,295
Posted By Fornax
Hi All, It's been a while since I posted but...

Hi All,

It's been a while since I posted but there are so many details that it would be a very long post.

So instead I'll start with a simple write-up summing up some of my experiences so far,...
Forum: Conservation 02-01-13, 03:45 PM
Replies: 568
Views: 570,295
Posted By Fornax
I think 2kW or so is too much. Asuming 70...

I think 2kW or so is too much.

Asuming 70 m^3/h and 80% efficiency and inside temperature of 20C, fresh air 0C you need to heat the air something like 4C (7F). (You intend to preheat the incoming...
Forum: Conservation 01-26-13, 02:58 PM
Replies: 568
Views: 570,295
Posted By Fornax
Yes, actually it does. Per square cm/inch the...

Yes, actually it does. Per square cm/inch the amount of heat to be moved is low.

For thin materials the most limiting part is transfering the heat from the air to the material and on the other...
Forum: Conservation 01-25-13, 01:15 AM
Replies: 568
Views: 570,295
Posted By Fornax
Actually those figures look fine to me. The...

Actually those figures look fine to me.
The stale air from the appartment is at 50%RH when it is entering the HX as warm air. Then it starts to cool down and when it exits the HX and is blown...
Forum: Conservation 01-09-13, 05:25 PM
Replies: 568
Views: 570,295
Posted By Fornax
Piwoslaw, thanks for your thanks : ) In a...

Piwoslaw, thanks for your thanks : )

In a separate thread I'll document my entire build (in the near future), when it's completely finished.

I can say a few things now though. The Apparatus is...
Forum: Lighting 12-30-12, 04:28 PM
Replies: 4
Views: 2,407
Posted By Fornax
Indeed it's quite simple: E = m * g * h E =...

Indeed it's quite simple: E = m * g * h
E = energy (measured in joules)
m = mass (in kilograms)
h = height (in meters)
g = gravity acceleration (about 9.81 m/s^2 (at sealevel), often rounded to...
Forum: Conservation 12-21-12, 02:39 PM
Replies: 568
Views: 570,295
Posted By Fornax
I like your craftmanship Kostas, the aluminium is...

I like your craftmanship Kostas, the aluminium is skillfully bend in shape.
Looking at the background in your pictures I get the impression you have a workshop with nice tools, which makes any job...
Forum: Appliances & Gadgets 10-30-12, 03:47 AM
Replies: 7
Views: 14,642
Posted By Fornax
The yellow flames to be avoided here are how a...

The yellow flames to be avoided here are how a candle burns yellow.
Such a flame is caused by inefficient burn where in part of the flame there is lack of oxygen. The fuel there partly burns to...
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