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Search took 0.01 seconds. Search: Posts Made By: Zwerius
Forum: Appliances & Gadgets 07-28-23, 10:24 AM
Replies: 2
Views: 26,396
Posted By Zwerius
You can only transmit a reasonable amount of heat...

You can only transmit a reasonable amount of heat with a small heat exchanging surface like this, if you have a large temperature difference between the energy input side and the water around it.
So...
Forum: Wind Power 06-19-22, 10:41 AM
Replies: 7
Views: 23,259
Posted By Zwerius
This is only true for changing directions in the...

This is only true for changing directions in the horizontal plane. But many times turbulent winds do not only vary in the horizontal but also in the vertical plane.
So partly, inefficiencies keep...
Forum: Appliances & Gadgets 05-27-22, 12:35 AM
Replies: 6
Views: 33,254
Posted By Zwerius
But how do you want to return the water to the...

But how do you want to return the water to the vessel that's pressurized by the air? I don't understand how your system is supposed to be working.

Could you draw a small diagram?
Forum: Biofuels 03-04-22, 09:34 AM
Replies: 9
Views: 21,566
Posted By Zwerius
It's hard to say which is worse. Methane is a...

It's hard to say which is worse.
Methane is a greenhouse gas, like CO2. However, methane is about 25 times more potent than CO2.
NOx gasses are no greenhouse gasses, but they cause acid rain and...
Forum: Biofuels 02-26-22, 08:26 AM
Replies: 9
Views: 21,566
Posted By Zwerius
What I didnt read so far, is that in every...

What I didnt read so far, is that in every "burning-process" nitrogen and oxygen from the air react to different Nitrous Oxides (NOx), which cause acidic rain and thus belong to the poluters of our...
Forum: Geothermal & Heat Pumps 01-31-22, 09:19 AM
Replies: 10
Views: 36,652
Posted By Zwerius
Did I understand it correctly that you have 30%...

Did I understand it correctly that you have 30% ethanol and 70% water in your ground loop?
Forum: Geothermal & Heat Pumps 01-31-22, 09:16 AM
Replies: 10
Views: 36,652
Posted By Zwerius
I can understand, that by switching your heat...

I can understand, that by switching your heat exchangers, the supplied thermal power can be improved. But I think to improve your COP, the only way is to enlarge the surface area of your ground loop.
Forum: Geothermal & Heat Pumps 01-03-21, 08:35 AM
Replies: 0
Views: 8,293
Posted By Zwerius
How our energy system performed over 2020

I thought you might like this:


https://i.postimg.cc/PxWWmj8s/sankeymatic-2300x1200-2020-English.png



For all details, you can take a look at my website.
It's in Dutch, but Google...
Forum: Energy Storage 08-08-19, 04:51 AM
Replies: 19
Views: 47,441
Posted By Zwerius
Here's another one:...

Here's another one: https://vimeo.com/335818817?width=800&height=480
Forum: Solar Power 04-04-19, 07:40 AM
Replies: 22
Views: 25,252
Posted By Zwerius
Hi Tom, I'm using Kyocera KC125-G2. These...

Hi Tom,

I'm using Kyocera KC125-G2. These are 125 Wp panels.
I'm using them for over 15 years now. And there's no sign of deterioration.
See the efficiency graph (over the years) on my (Dutch)...
Forum: Renovations & New Construction 12-27-18, 05:37 AM
Replies: 2
Views: 8,064
Posted By Zwerius
I insulated my main entrance door with vacuum...

I insulated my main entrance door with vacuum panels: https://geen-energierekening-meer.weebly.com/de-voordeur.html
Website is in Dutch, but Google Translate can help!
Forum: Renovations & New Construction 08-25-18, 11:28 AM
Replies: 5
Views: 13,897
Posted By Zwerius
6" is more or less "old school" overhere in the...

6" is more or less "old school" overhere in the Netherlands. 4" (or even less!!) is favourable, especially when you are using a heatpump. Or if you are planning to use one in the future.
More...
Forum: The Billiards Room 08-12-18, 11:52 AM
Replies: 2
Views: 18,179
Posted By Zwerius
May be it's good to read this article in the NYT:...

May be it's good to read this article in the NYT: https://www.nytimes.com/interactive/2018/08/01/magazine/climate-change-losing-earth.html
Forum: Solar Power 07-14-18, 11:47 AM
Replies: 11
Views: 12,778
Posted By Zwerius
I don't understand the prices in the US. Over...

I don't understand the prices in the US. Over here (the Netherlands in Europe) we pay about € 1,15/Watt (=approx. $ 1,40) including cabling, inverter, mounting etc.
Why are the prices so much higher...
Forum: Lawn and Garden 06-18-18, 01:00 PM
Replies: 0
Views: 8,148
Posted By Zwerius
RAM-pump

I installed a RAM pump for watering the garden.
Description on my website (in Dutch; you can use google translate):https://geen-energierekening-meer.weebly.com/ram-pomp.html
You can see it in...
Forum: Geothermal & Heat Pumps 04-02-18, 10:38 AM
Replies: 5
Views: 13,102
Posted By Zwerius
Should the pressure/temperature at the exit of...

Should the pressure/temperature at the exit of the evaporator not be depending on the ambient (outside) temperature?
Forum: Solar Power 01-17-18, 08:58 AM
Replies: 8
Views: 7,686
Posted By Zwerius
I can only show you the efficiency of my panels...

I can only show you the efficiency of my panels over 14 years of use.
My website is in Dutch, but the graph speaks for itself: vertical=efficiency (based on panel area, not cell area) and...
Forum: Solar Power 01-04-18, 03:33 AM
Replies: 1
Views: 5,632
Posted By Zwerius
Nearly energy neutral again in 2017 (incl. 2 e-cars)

Just for your information:
We managed to get close to energy neutral again in 2017.
And this was including:

heating
DHW
residential use (ligths TV's, refrigerator, computers, etc.)
BMW-i3...
Forum: Other Improvements 11-02-17, 05:02 AM
Replies: 3
Views: 8,149
Posted By Zwerius
Yes, that's thin. But it is functioning very...

Yes, that's thin. But it is functioning very well.
I'm having a max. watertemperature (supply to the floor) of 32°C (89.6 F) in winter. The heating is calculated for an outside temperature of -12°C...
Forum: Conservation 06-29-17, 10:39 AM
Replies: 575
Views: 1,300,161
Posted By Zwerius
Looks good. Did you do any temperature...

Looks good.
Did you do any temperature measurements in/out and in/out?
So what's the efficiency?
Forum: Geothermal & Heat Pumps 06-29-17, 05:43 AM
Replies: 21
Views: 18,420
Posted By Zwerius
As far as I know, many refrigerant compressors...

As far as I know, many refrigerant compressors are not able to start up against a backpressure. Normally after stopping the compressor, after a while the pressures in condensor and evaporator will be...
Forum: Geothermal & Heat Pumps 06-23-17, 01:18 AM
Replies: 11
Views: 16,470
Posted By Zwerius
Ator, Thanks. How can I send a PM to you? ...

Ator,

Thanks.
How can I send a PM to you?
Can't seem to find this option.
Forum: Geothermal & Heat Pumps 06-21-17, 10:37 AM
Replies: 11
Views: 16,470
Posted By Zwerius
Ator, Kun je me naam en adres geven van waar je...

Ator,
Kun je me naam en adres geven van waar je de unit hebt gekocht?
Daar heb ik ook wel belangstelling voor....

m.vr.gr.,
Zwerius Kriegsman.
geen energierekening meer: energie + woonhuis van...
Forum: Biofuels 02-26-17, 07:54 AM
Replies: 31
Views: 58,047
Posted By Zwerius
May all be true, but my question was: what has it...

May all be true, but my question was: what has it got to do with biofuels or ECOrenovator?

This is not just a DIY-forum as far as I know...

So, does it belong in this forum?
Forum: Biofuels 02-26-17, 05:55 AM
Replies: 31
Views: 58,047
Posted By Zwerius
Maybe, it's because I'm not American. But I...

Maybe, it's because I'm not American.
But I thought WMO means Waste Motor Oil.
If this is correct, it may be cheap to use, but what has it got to do with biofuels or ECOrenovator?
Showing results 1 to 25 of 70
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