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geefree

  • Posts: 6180
How do you get the hot water ?
« on: October 02, 2008, 11:26:03 pm »
Reading a lot lately about hot water systems, in fact its getting like it was when trad was moving to wfp..... how does the hot water system work, how much is it, and can we diy it?

also in winter people say they are ok because of it, what about cracking the glass in below zero conditions. etc.... and burning your fingers.. ;D....

also is it ok to pop in a nice cup, with coffee in  ;D
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Chris Galloway

Re: How do you get the hot water ?
« Reply #1 on: October 02, 2008, 11:46:11 pm »
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geefree

  • Posts: 6180
Re: How do you get the hot water ?
« Reply #2 on: October 02, 2008, 11:54:04 pm »
Thanks, heater is all i got from that though.... and lots of yays and nays.

but thanks for the link.
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[GQC] Tim

  • Posts: 4536
Re: How do you get the hot water ?
« Reply #3 on: October 03, 2008, 08:47:15 am »
Nathaneal Jones did a thread on this, with pictures on his lpg heater and how to install it, I just can't find the link at the moment, cuz I don't know how to spell Nathaneal lol (sorry)
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WCE

  • Posts: 968
Re: How do you get the hot water ?
« Reply #4 on: October 03, 2008, 09:18:54 am »
And wrote a book on it It's available free if you are a Guild member. It's in the Guild members section of the acs forum if your a member.
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LWC

  • Posts: 6824
Re: How do you get the hot water ?
« Reply #5 on: October 03, 2008, 09:31:11 am »
do you wash your dishes with cold water?

something cacked on to a plate, cold will do the same job but with lots more scrubbing, hot helps loads

thats the way i look at it, i want hot  ;D
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MNWC

  • Posts: 1549
Re: How do you get the hot water ?
« Reply #6 on: October 03, 2008, 01:11:21 pm »
Just put a heating element in youre ibc ....job done !
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NWH

  • Posts: 16952
Re: How do you get the hot water ?
« Reply #7 on: October 03, 2008, 02:44:48 pm »
Quote from: Marcus Norton on October 03, 2008, 01:11:21 pm
Just put a heating element in youre ibc ....job done !

It won`t get hot enough you will lose loads of heat,with an on demand setup you will only lose some heat in the hose with the way your talking about it has to travel right round the system and then through the hose reel.With a heater fitted after the pump it only has the hose to get through.
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Bobs Window Cleaning

  • Posts: 1257
Re: How do you get the hot water ?
« Reply #8 on: October 03, 2008, 03:08:04 pm »
Hot water freezes quicker than cold :-[

Winters coming ;D
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Nathanael Jones

  • Posts: 5596
Re: How do you get the hot water ?
« Reply #9 on: October 03, 2008, 03:50:03 pm »
www.cleanitup.co.uk/smf/index.php?topic=50777.0

Hot is a great leap forward,... I'd never go back to cold!

:)
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foxy

  • Posts: 121
Re: How do you get the hot water ?
« Reply #10 on: October 03, 2008, 05:02:12 pm »
how can hot water freeze quicker than cold? it may lose it's heat at a faster rate than cold but 30 degree celcius water will freeze before  99 degree celcius and i'll put money on it. ;)
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Mr H

  • Posts: 615
Re: How do you get the hot water ?
« Reply #11 on: October 04, 2008, 08:37:46 am »
Quote from: simonfox on October 03, 2008, 05:02:12 pm
how can hot water freeze quicker than cold? it may lose it's heat at a faster rate than cold but 30 degree celcius water will freeze before  99 degree celcius and i'll put money on it. ;)


I'll take that bet off you........

everything2.com/index.pl?node_id=656818
Quote
Yes! If you take an ice cube rack filled with hot water and put it in an iced-up freezer, the ice cubes will form noticably faster than if you use cold water. This phenomenon was first observed by Aristotle:

"Many people, when they want to cool water quickly begin by putting it in the sun. So the inhabitants when they encamp on the ice to fish (they cut a hole in the ice and then fish) pour warm water round their rods that it may freeze the quicker; for they use ice like lead to fix the rods."
Sir Francis Bacon noticed the same phenomenon when wooden pails were placed on ice. Those with hot water froze faster. There are two major types of explanations for this phenomenon. Either or both may be true, depending on the conditions of the experiment.

Explanation 1: Thermal Contact If you put an ice-cube tray with hot water into a freezer with ice covering the shelf surface, the hot water will melt a little bit of the ice on the shelf. This then refreezes, making better thermal contact between the freezer and the tray. As a result, heat is conducted away more quickly from the water, allowing it to freeze faster.

Explanation 2: Convection It has been noticed that even a metal pail of water suspended in the air on a chilly night will freeze faster if the water is warm. Thermal contact is not the issue here. Instead, it is hypothesized that convection may be the contributing factor. In a pail of cold water, the water is stationary, and freezing begins on the edges of the pail and surface of the water and slowly works its way inside. The core, now insulated by a chamber of ice, freezes more slowly . However, a warm pail of water, when cooled at the edges, will start to churn due to convection. This mixes the water, allowing it to cool more evenly, potentially speeding up the freezing process. The degree of temperature difference determines the amount of convection that occurs.

Obviously, the conditions of the experiment are crucial here. The relative temperature of the water and the environment, the type of container, its size and shape, thermal contact with ice, etc. These all affect the rate of cooling and freezing.

Regards
Mr H

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Pole 2 Pole

  • Posts: 1051
Re: How do you get the hot water ?
« Reply #12 on: October 04, 2008, 08:50:41 am »
Quote from: simonfox on October 03, 2008, 05:02:12 pm
how can hot water freeze quicker than cold? it may lose it's heat at a faster rate than cold but 30 degree celcius water will freeze before  99 degree celcius and i'll put money on it. ;)
Not exactly answering your question or backing up whats been mentioned, bit if you get 2 ice cubes and melt one under hot water and one under cold....the ice cube under the cold water will melt quicker...dunno why...just the way it is......I guess the principal is the same.......If that makes sense.Boffins???
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geefree

  • Posts: 6180
Re: How do you get the hot water ?
« Reply #13 on: October 04, 2008, 11:11:49 am »
put a cup of hot and cold water in freezer, see which one freezes first... end of arguement  ;D
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Captain Scarlet

  • Posts: 3087
Re: How do you get the hot water ? New
« Reply #14 on: October 04, 2008, 12:34:00 pm »
Quote
put a cup of hot and cold water in freezer, see which one freezes first... end of arguement

Its not quite as simple as that, I did quite a bit of research on this phenomenon a while back. It relies on certain conditions to be present. the factors are:

*   the ambient freezing conditions ( ie 0 to -whatever degrees )
*   the temperature of the cold water ( 1 to 15o degrees )
*   the temperature of the hot water ( 50-100o degrees )
*   + many other things, like water density, volume, etc

You see the factors are HUGE, what we define as cold or hot isnt exact! Apparently its not an easy test to replicate!
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