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Search: Posts Made By: dcx
Forum: Geothermal & Heat Pumps 09-11-18, 04:50 AM
Replies: 17
Views: 8,331
Posted By dcx
One labstudy on r134 "drop-ins" also available...

One labstudy on r134 "drop-ins" also available from Spain.
...
Forum: Geothermal & Heat Pumps 09-06-16, 05:31 AM
Replies: 149
Views: 38,704
Posted By dcx
Keen on hearing about the everyday performance of...

Keen on hearing about the everyday performance of this U-Crown .

Here below a test (made by Gree) for 18 BTU applied in Europe (see: QXAT-B121 compressor instead of B20 for US/CAN):
...
Forum: Geothermal & Heat Pumps 02-08-14, 09:34 AM
Replies: 31
Views: 19,245
Posted By dcx
This FH09NA is also known as FH25 in Scandinavia....

This FH09NA is also known as FH25 in Scandinavia.

Below independent heat-mode test by VTT:

http://www.scanoffice.fi/uploads/vtt-raportit/VTT-S-06121-12.pdf

Note , "defrost " included the...
Forum: Geothermal & Heat Pumps 01-02-14, 08:49 AM
Replies: 55
Views: 24,742
Posted By dcx
Sorry,I have to confess this chat upon multiple...

Sorry,I have to confess this chat upon multiple compressors goes beyond my comprehension when/if residential heating concerned.Is there sound need
for extra compressors,I might ask ?

The point of...
Forum: Geothermal & Heat Pumps 04-04-13, 10:50 AM
Replies: 34
Views: 13,863
Posted By dcx
[QUOTE=jeff5may;29175]dcx, The cheap...

[QUOTE=jeff5may;29175]dcx,

The cheap version:
Mr Heater - LP Female Throway Adapter 1" X 1/4 MPT - F273754 (http://www.bakersgas.com/MRH49375.html)

The expensive version:
Camco 59213...
Forum: Geothermal & Heat Pumps 03-31-13, 04:35 AM
Replies: 34
Views: 13,863
Posted By dcx
Thanks AC for your help. Originally I tried to...

Thanks AC for your help.
Originally I tried to find my way the the sources of "HEAD CONNECTORS"
(=PERFORMER) of the MAP_GAS bottles (see pic. attch.).

I wonder how in US (net shop?) you could...
Forum: Geothermal & Heat Pumps 02-20-13, 05:20 AM
Replies: 34
Views: 13,863
Posted By dcx
dc€x, The bottles of map gas (propylene) that I...

dc€x,
The bottles of map gas (propylene) that I use have the same fittings as propane bottles. As such, HV23T has a good pic of the type of adapter I use to charge and recover small amounts of...
Forum: Geothermal & Heat Pumps 02-20-13, 05:20 AM
Replies: 34
Views: 13,863
Posted By dcx
dcx, The bottles of map gas (propylene) that I...

dcx,
The bottles of map gas (propylene) that I use have the same fittings as propane bottles. As such, HV23T has a good pic of the type of adapter I use to charge and recover small amounts of...
Forum: Geothermal & Heat Pumps 02-19-13, 08:39 AM
Replies: 34
Views: 13,863
Posted By dcx
I am wondering why this r290 is so favoured...

I am wondering why this r290 is so favoured before ... r1270?

This "R1270" you can buy from your local milk store (in US/Canada) ... I presume.
It is also called MAP//PRO-gas .

Bullfinch Gas...
Forum: Geothermal & Heat Pumps 02-11-13, 05:14 AM
Replies: 57
Views: 19,575
Posted By dcx
You have exellent attitude,jeff5may, approaching...

You have exellent attitude,jeff5may, approaching this "awkward" matter.
Find below one humble coolpack-wersion (not created originally by me).

Pls,note always the Coolpack knows nothing about...
Forum: Geothermal & Heat Pumps 12-07-12, 08:31 AM
Replies: 1,942
Views: 1,619,629
Posted By dcx
I was wonderng that maybe this doc. thesis could...

I was wonderng that maybe this doc. thesis could give some more ideas
rgd. r290- stuff and design parameters of the equipment at small size.

Not easy to dig up but pls. google first:

ISRN...
Forum: Geothermal & Heat Pumps 07-27-12, 10:39 AM
Replies: 282
Views: 116,935
Posted By dcx
I found an interesting study on propane vs....

I found an interesting study on propane vs. lubricating oils .This time a (large one) piston-compressor was concerned.

http://docs.lib.purdue.edu/cgi/viewcontent.cgi?article=3028&context=icec
...
Forum: Geothermal & Heat Pumps 02-14-12, 04:01 AM
Replies: 282
Views: 116,935
Posted By dcx
This feature of BBQ is well documented here...

This feature of BBQ is well documented here below:

Ethyl Mercaptan in BBQ Propane (http://www.refrigeration-engineer.com/forums/showthread.php?28772-Ethyl-Mercaptan-in-BBQ-Propane)

ISOPROPYL...
Forum: Geothermal & Heat Pumps 02-13-12, 01:26 PM
Replies: 24
Views: 26,279
Posted By dcx
Vacuuming the installation tubing below 500...

Vacuuming the installation tubing below 500 microns will forgive you all sins you have done before it (air-pressure test).

Purging only by BBQ will leave acc. to calculation 0,2mg H20 inside the...
Forum: Geothermal & Heat Pumps 02-13-12, 05:21 AM
Replies: 24
Views: 26,279
Posted By dcx
Exxellent comments in every respect from all of...

Exxellent comments in every respect from all of you.

Behind this all is the battle against .... oxygen!
H2O is a biproduct coming along with Air and in excessive amounts to be abolished at any...
Forum: Geothermal & Heat Pumps 02-12-12, 12:39 PM
Replies: 24
Views: 26,279
Posted By dcx
My intension was only to give a choice for...

My intension was only to give a choice for temperary/quick raise of pressure.
That time one could make the soap/foam-test for the system if one feel that is necessary when using those "Helium...
Forum: Geothermal & Heat Pumps 02-12-12, 11:46 AM
Replies: 24
Views: 26,279
Posted By dcx
YES! Widely used in Europe by those who do not...

YES!
Widely used in Europe by those who do not want to retighten the system tubing within 4-5 years or so due the Cu-deformation of Cu-flares because of system vibration and temperature changes.
...
Forum: Geothermal & Heat Pumps 02-12-12, 08:21 AM
Replies: 24
Views: 26,279
Posted By dcx
There are other choices available instead of...

There are other choices available instead of traditional flare coupling ,as well.

=> LEAKAGE FREE SAE CONNECTORS ,where no wrench needed.
-Helium tight ... max. leakage He 0,5g /10years ! ...
Forum: Geothermal & Heat Pumps 02-11-12, 07:46 AM
Replies: 6
Views: 2,898
Posted By dcx
I feel the residential heating by ASHP is not...

I feel the residential heating by ASHP is not specially challenging in N-America,if the widgets ,supplied locally, could only somehow manage -15degC with reasonable COP (>>1,5).

In N-Europe...
Forum: Geothermal & Heat Pumps 01-31-12, 04:33 AM
Replies: 282
Views: 116,935
Posted By dcx
BradC Fine pioneer venture you are going...

BradC

Fine pioneer venture you are going through!
Still urging you to cool down the tank (in lack of freezer ,collect some dry ice (=CO2 if available) to hasten the segregation in the tank!
...
Forum: Geothermal & Heat Pumps 01-30-12, 12:30 PM
Replies: 282
Views: 116,935
Posted By dcx
The modern minisplits have no dryers. But when...

The modern minisplits have no dryers.
But when creating a DIY-minisplit it`s wise to have one assemled in the circuit.!


==============

Sorry,In my earlier post the .jpg -files do not show.I...
Forum: Geothermal & Heat Pumps 01-30-12, 11:06 AM
Replies: 282
Views: 116,935
Posted By dcx
It is worth reading the issue below: ...

It is worth reading the issue below:

http://www.propanecouncil.org/uploadedFiles/REP_11353%20Water%20and%20Solid%20Contaminant%20Control%20Vol1.pdf


http://C:\Documents and Settings\Antti\Omat...
Forum: Geothermal & Heat Pumps 01-30-12, 10:11 AM
Replies: 282
Views: 116,935
Posted By dcx
Do not worry,Xringer, about the possible "extra...

Do not worry,Xringer, about the possible "extra water".
Probably the tapping valve is not extacly at the bottom ,maybe a little bit higher to prevent sludge/watermixture entering into your tiny...
Forum: Geothermal & Heat Pumps 01-30-12, 04:04 AM
Replies: 282
Views: 116,935
Posted By dcx
If the full propane tank (11kg) contains max....

If the full propane tank (11kg) contains max. 200ppm(weight) H2O,there could be squeezed away ,say, 2200mg H2O eg. roughly >22 droplets assosiated with some propane liquid. .

So we are dealing...
Forum: Geothermal & Heat Pumps 01-30-12, 03:36 AM
Replies: 282
Views: 116,935
Posted By dcx
I fully stay behind your lecture,Xringer! A...

I fully stay behind your lecture,Xringer!

A chest freezer mayby the best choice for the refinery before creating an enterprise.
Easy to get down to -20 .. -28degC ,only set aside the frozen...
Showing results 1 to 25 of 27

 
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