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Blinking big heat pump
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tahir



Joined: 28 Oct 2004
Posts: 45389
Location: Essex
PostPosted: Tue Mar 10, 15 9:53 am    Post subject: Blinking big heat pump Reply with quote
    

https://m.bbc.co.uk/news/business-31506073

Very sexy

Falstaff



Joined: 27 May 2009
Posts: 1014

PostPosted: Tue Mar 10, 15 11:24 am    Post subject: Reply with quote
    

Ammonia @ 120 degrees C and 50 Bar (700 lbs/sq inch)

Don't want any "Gas-safe plummers" working on THAT !

dpack



Joined: 02 Jul 2005
Posts: 45374
Location: yes
PostPosted: Tue Mar 10, 15 11:40 am    Post subject: Reply with quote
    

a very tidy bit of kit .the only downside is the water will be a little colder for a bracing dip in the sea.

i wonder how many uk sites are suitable ?i spose a lot of available water near a population centre are the main factors.

i recon that covers most of the big ports and quite a few coastal towns

tahir



Joined: 28 Oct 2004
Posts: 45389
Location: Essex
PostPosted: Tue Mar 10, 15 11:45 am    Post subject: Reply with quote
    

dpack wrote:
a very tidy bit of kit .the only downside is the water will be a little colder for a bracing dip in the sea.


Yes, but plenty of large bodies of water are being affected by global warming...

dpack



Joined: 02 Jul 2005
Posts: 45374
Location: yes
PostPosted: Tue Mar 10, 15 12:00 pm    Post subject: Reply with quote
    

i expect a pump system only adds a little energy ,ie the pumps,and basically just moves heat from big n wet outdoors to warm and cosy indoors and then thermodynamics 2 moves it back outside .

if the electricity for the pumps was from tidal would it be an energy neutral system?

tahir



Joined: 28 Oct 2004
Posts: 45389
Location: Essex
PostPosted: Tue Mar 10, 15 12:00 pm    Post subject: Reply with quote
    

dpack wrote:
if the electricity for the pumps was from tidal would it be an energy neutral system?


I guess so

dpack



Joined: 02 Jul 2005
Posts: 45374
Location: yes
PostPosted: Tue Mar 10, 15 12:05 pm    Post subject: Reply with quote
    

im sure a huge chunk of the global population live close to suitable big water .

what nice tech

Behemoth



Joined: 01 Dec 2004
Posts: 19023
Location: Leeds
PostPosted: Tue Mar 10, 15 12:38 pm    Post subject: Reply with quote
    

I'm wondering about it's economic scalability and application by the water industry. We already use sludge as fuel, would be nice to use the cold water entering treatment works to power them.

vegplot



Joined: 19 Apr 2007
Posts: 21301
Location: Bethesda, Gwynedd
PostPosted: Tue Mar 10, 15 12:41 pm    Post subject: Reply with quote
    

Nice system and a good demonstrator of a large scale application.

dpack



Joined: 02 Jul 2005
Posts: 45374
Location: yes
PostPosted: Tue Mar 10, 15 12:43 pm    Post subject: Reply with quote
    

i suspect the max temp of the transfer gas(nh3) which is 120c in this kit would be too low for efficient steam generation (for leccy) .

i assume the water industry uses gravity to shift liquids ,i would think that the moving water tech would be one way to get leccy

tahir



Joined: 28 Oct 2004
Posts: 45389
Location: Essex
PostPosted: Tue Mar 10, 15 12:46 pm    Post subject: Reply with quote
    

Behemoth wrote:
I'm wondering about it's economic scalability and application by the water industry. We already use sludge as fuel, would be nice to use the cold water entering treatment works to power them.


You must have potential for heat exchange all over the place

Behemoth



Joined: 01 Dec 2004
Posts: 19023
Location: Leeds
PostPosted: Tue Mar 10, 15 12:52 pm    Post subject: Reply with quote
    

Might be able to sell heating to locals though?

We do use gravity where possible but there's a lot of mechanical equipment and people in flat places that requires power and pumping. We have investigated in line turbines on gravity fed supplies in pennines etc but returns at great and it can affect the pressure of supply. Raw water transfer systems may offer more potential but the Victorians generally designed them with low gradients. We are putting some hydro trubines in when some remedial work is done on the weirs on the river aire which will allow migratory fish up it again. Have you seen the new wid turbine in East Leeds?

dpack



Joined: 02 Jul 2005
Posts: 45374
Location: yes
PostPosted: Tue Mar 10, 15 2:37 pm    Post subject: Reply with quote
    

selling heating to locals might be a good idea ,all the hot bathwater etc is under their homes so the heat is quite local to the consumer and if the kit could be developed to work in a main sewer getting some of the energy back might be possible

Nick



Joined: 02 Nov 2004
Posts: 34535
Location: Hereford
PostPosted: Tue Mar 10, 15 8:50 pm    Post subject: Reply with quote
    

Falstaff wrote:
Ammonia @ 120 degrees C and 50 Bar (700 lbs/sq inch)

Don't want any "Gas-safe plummers" working on THAT !


Because they're Polish?

Mistress Rose



Joined: 21 Jul 2011
Posts: 15539

PostPosted: Wed Mar 11, 15 8:21 am    Post subject: Reply with quote
    

Interesting article. There is a lot of potential for extracting heat from 'waste' from all sorts of systems, and I think this is often preferable to extracting it from ordinary water, both in terms of efficiency and ecological effects. It is well known that dischargin warm water affects the ecology of an area, and extracting too much heat must have an effect too. Where you have tidal flow, such as London, or a large volume of water running out of a river, this would be far less marked though.

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