Hosepipe Ban

Shiny · Post by **Shiny** » Mon May 28, 2012 10:26 pm

Thames Water confirmed I can do the as long as I fill up buckets from mains and not via hosepipe.

It uses exactly the same amount of water as running off the mains via hose. Well actually more as I dropped a bucket when the handle broke and 20l went over the lawn.

A1ex · Post by **A1ex** » Mon May 28, 2012 10:26 pm

Shiny, good work!

Duo, full of geekery and so stuck in it's ways! I deal with WRAS approval applications, getting so much grief from the olympic viallage and Thames Water.

It's crazy that people still get fittings approved in imperial even though it's illegal to make imperial pipe in the UK and we were 'switched' to metric 50 odd years ago

taz8520 · Post by **taz8520** » Mon May 28, 2012 10:28 pm

Never thought of doing that, sweetttttt

Duo · Post by **Duo** » Mon May 28, 2012 10:36 pm

Lol I was a leakage tech then flush testing meters, currently mains cleaning but becoming a core sample auditor sometime soon but thats all about the reinstatement side, making sure new patches are up to spec etc. The mains cleaning and meter work is a real look into the hydraulic system itself and how it all works etc etc and leakage is like a black art lol

Supermarine Blues · Post by **Supermarine Blues** » Mon May 28, 2012 11:51 pm

I attach the Kaercher to a pair of water butts. Softer water and sod their underinvestment...

Post by **Donald** » Tue May 29, 2012 8:41 am

Gorgon wrote:Warm water freezes faster than cold water too.
A1ex wrote: how?

vti2003 wrote: Go on then - I'm dying to know the answer to this one

Mpemba effect

A1ex · Post by **A1ex** » Tue May 29, 2012 9:24 am

That's a little counter intuitive, but cudos for the knowledge. Did A level Physics & Chemistry but never heard of that before

Supermarine Blues · Post by **Supermarine Blues** » Tue May 29, 2012 9:47 am

They don't like to talk about the Mbemba/Leidenfrost effects, probably because they appear to break the laws of thermodynamics!

Post by **Donald** » Tue May 29, 2012 12:20 pm

Yeah it makes no sense, it happens, and they can't really come up with a definitive reason why.

The only thing I can think of is specific heat capacities, the warmer water gets, the harder it is to retain that heat or something. I don't completely understand it, but I know it takes 4.186 joules to heat 1g/ml of water 1 Celsius, and as the temperature increases the energy required to do that decreases, meaning that each g of water can only hold so much heat before essentially that energy is surplus and it loses it to the surrounding atmosphere.

That was a horrible attempt at explaining something I can't explain, but I hope you get the idea