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Hot water woe - Page 7

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Posted by ransley on December 30, 2008, 12:31 am
On Dec 29, 4:04pm, humphil...@yahoo.com wrote:

Heater is now in unheated basement, but at -15f I put a thermometer
probe at the coil since metal ductwork and the stainless wall exhaust
didnt seal well, the coil got to maybe 40f in a 65f basement at the
coil top. I had no need to drain it then. I dont think I ever heated
water above 105 to get a 96f shower, figuring 9f pipe loss at 20ft of
pipe and my shower head is a 4" wide full flow. You dont need 115 rise
for a shower unless you have maybe a 100ft pipe run, measure what you
need, at a max I needed 70f rise. And actualy less since I used an old
tank to temper water first but since I left the insulation on the
tempering tank it was real cold water when used alot. If its into a
chimney it wont get below room temp, if wall vented like mine it could
freeze since my basement wouldnt go below 55f. Understand sometimes I
heated the basement sometimes not, and I had a air vent faced to hit
the tankless if needed. One lb of propane 21600 btu, a 20 lb tank is
432000. The bosch at high uses 117000 per hour so if you use it only
20 minutes a week to shower and no other HW a 20 lb tank might last
more than 4 months at near high output to only shower. But the biggest
water waster is washing dishes.  Figure this, in summer Indiana Ng I
was paying 7-9$ a month for ng to cook all food was and Ng dry 1-2
laundry loads a week, but in summer incomming went to 70f and house
was warm. One drawback to the cheap tankless is to save the most money
you manualy adjust temp since it heats by temp rise. But a 20 lb tank
would fit in your basement and be warm. several times I had the
minimum gas bill of 9$ they sent out reps twice to find out how I was
stealing gas, when they saw my set up they understood but said i had
the lowest bills of a home they ever saw, R100 attic, R35 walls, in a
100yr old home I redid. If you have good electric you have other
options. My tankless was 460$ with more options they jump right to
1000 and up, freezing is an issue  you have to figure out first.

Posted by Jim Wilkins on December 31, 2008, 1:32 pm
On Dec 31, 2:16am, nob...@xmission.com (Scott) wrote:

I grew up with US units but didn't measure much until I studied
chemistry, which is all metric here. My old machine tools and
instruments are graduated in inches and pounds so I measure distance
and force with them, but calculate mixed-unit quantities in metric.

The US tends to be more descriptive than prescriptive and retains the
customary units for non-technical general use while science and
engineering are substantially metric. The argument is political here,
freedom of choice vs the government knows best.


Posted by Eeyore on December 31, 2008, 1:43 pm

David Williams wrote:

Always a bad choice.


Posted by Jim Wilkins on December 31, 2008, 2:32 pm

I think it was the lowest temperature in German Danzig (Polish Gdansk)
on the southern shore of the Baltic where he grew up. Maybe he wanted
to confuse illiterate Russians with negative temperature readings.

The purer you make water, the harder it is to make ice begin to
crystalize as it's cooled. I don't know what objection he might have
had to a mix of water and ice, but science still contained myths and
misunderstandings in 1724.


Posted by Eeyore on December 31, 2008, 10:17 pm

David Williams wrote:

Bizarre is as you say the only possible conclusion.

Wasn't it a defective Anerican units miscalculation that caused the Mars Lander
to crash ?

And of course the only other 2 countries that share the old system are those
well-known advanced nations, Liberia and Myanmar (formerly Burma). I expect
Liberia uses the American system and Myanmar the British system, making them

What a right mess when 92% of the world's populion uses just ONE unified system
of units !


We have no use for your stuff as it stands. GET WITH IT.


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