🚀 go-pugleaf

Sylvia Else wrote:

> 
> 
> Eunometic wrote:
> 
>> hubbca2003@yahoo.com.au (Carole) wrote in message 
>> news:<77ed1283.0410200711.bd4e58b@posting.google.com>...
>>
>>> bernxard@yahoo.com.au (The Enlightenment) wrote in message 
>>> news:<39556695.0410190559.643eb88f@posting.google.com>...
>>>
>>>> Australia has always been a country sparse in water resources.  We've
>>>> all known this since childhood and have always known that we need to
>>>> manage the resource wisely. Why then have the Laboral elites been
>>>> increasing Our population through immigraion at a rate of 130,000 per
>>>> year?
>>>
>>>
>>> There was a 4Corners show on Monday. Ticki Fullerton interviewed Bob
>>> Carr and others and the show discussed feasibility of different
>>> options from turning sea water into fresh water and recycling grey
>>> water for human consumption which is being done successfully in some
>>> countries.
>>> http://www.abc.net.au/4corners/content/2004/s1220624.htm
>>>
>>>
>>>> The latest scheme is to divert millions of mega-litres of water from
>>>> the shoalhaven river to Sydney (where 60% of migrants settle).  This
>>>> is ofcourse not really Sydneys water but should belong to the region.
>>>>
>>>> We will go through a phase of diverting a few minor rivers (at great
>>>> expense for little gain) the effect of which will be to further
>>>> worseneing environmental flows and changing the ecology of these
>>>> rivers, we are begining some farcical water conservation measures
>>>> which will in general add progressively higher expenses for diminising
>>>> returns.  All of these measures will only stave of for a short time
>>>> the increaes in annual water bills of possibly a thousand dollars per
>>>> household that will be needed to support coal powered desalination.
>>>>
>>>> Immigraion has of course become a sacred cow: driven by ethnic special
>>>> interest groups and pandering politicians, driven by businesses who
>>>> desire market growth and cheaper labour for their lacklustre
>>>> management and owners.  Driven by wealthy pro-immigration post war
>>>> Jewish immigrants such as Frank Lowey, Richard Pratt and Lou Solomon,
>>>> driven by brain dead lunar leftists.
>>>
>>>
>>> Carole
>>> http://www.austarmetro.com.au/~hubbca/water_agenda.htm
>>
>>
>>
>> I had a look at hoth links that you provided.
>>
>> The first link, to the 4 corners site, starts of "once we had water to
>> waste".  This is rubbish.  Australians DON'T waste water or use
>> unreasonable quantities though there is room for improvement in
>> substance there is not too much to be done.
>>
>> They are trying to put a guilt trip on Australians to distract from
>> their own neglect and mismanagement of water resources and yes of the
>> population they have irresponsbly doubled in Sydney over the last 25
>> years and continue to do so.
>>
>> We are all going to pay and the quality of our lives will lower.
>>
>> Desalination is possible but at a great cost.  The price is 4-5 times
>> that of rainwater collected in Dams and inevitably it requires energy 
>> that will only add to Greenhouse effects and our energy dependancy. 
>> The energy requirements are around 10kw.hr/kLitre for reverse osmosis
>> and 4 kw.hr/kLitre for multistage flash distillation a process which
>> while efficient requires expesnive decalcination.
> 
> 
> Anyone calculated the minimum theoretical power requirement? I'm rather 
> surprised that reverse osmosis is that inefficient.

OK, I did it. The figure I get is only 0.6 kWHr/kL, which is 
surprisingly low, and rather implies that the best technology currently 
available is only 15% efficient. It also seems to imply that reverse 
osmosis heats the water by 8 degrees celsius. Anyone know whether that's 
right?

Sylvia.