On Apr 10, 8:54 am, " wrote:
Hey Haller, how come you're ignoring the link and quote I posted from
the engineering trade journal about standby loss? Trade journals are
rarely run by wacky *******s that print/post bad information. The
author is an interesting guy:http://www.newyorker.com/archive/200..._talk_sullivan


heres your link its about boilers, remember were talking hot water
tanks

{snip the entire article about the _author_ }

No, the original link with the article from the trade journal, not my
second post asking why you ignored the first. Here's the pertinent
excerpt from the first post.

hallerb wrote:

again please post a link that says 20% go up the chimney........
please a link....... please........ all i see is someone stating it
must be....

And my response with the link:

You mean like this one?
http://www.hpac.com/Issue/Article/27...stic_Ho****er_...
An excerpt: "Energy efficiency is another problem with a typical
direct-fired water heater. A standard water heater is rated at about
84-percent steady state efficiency. That means that while the fire is
on, 84 percent of the heat from the fire enters the tank, while 16
percent of the heat goes up the chimney. That sounds pretty good, but
a water heater is not a steady state device: the fire turns on and
off. While the heater is off heat is still going up the chimney.

The annual fuel utilization efficiency (AFUE) rating of a typical
water heater is much lower, in the range of 70 percent for a 40-gal.
heater and dropping to 51 percent for a 75-gal. heater. An AFUE of 51
percent means that 51 percent of the heat in the fuel leaves the
heater by going out the hot water pipe. Except for a little heat lost
through the jacket of the heater, the rest goes up the chimney. So
while about 16 percent of the heat goes up the chimney while the fire
is burning, about another 15 to 35 percent, called "standby loss" goes
out the chimney while the fire is not burning."

R