Heating load vs. electrical load ... all ends up as heat anyway?
Would like to debate about the fact that most ( read all ) of our electrical energy usage ends up as heat during heating season, and thus cannot be accounted as for seperate expanses from the heating loads.
I read alot about watching all small electrical loads from mini appliances, chargers etc..
Water tank standy heat losses .. computer let turned on all day long.
But during heating seaons, doesn't it all gets convereted to heat at the end ??
Ok we might loose some light energy through windows, some excess heating could end up being generated during daytime if SHG is high enough already etc...
Water heater tanks with ~100w standby losses cost in the vicivnity of 90-100$/year of stanby power,
but during almost 50% of my local climate time, it all ends up heating the room where the tank(s) are located.
computers are fairly efficient at converting 80-90% of their energy use as direct heat
Wanted to point that out for some who might worry about all the losses,
worry about them during cooling season...else focus on something else :)
( in hope i am not wrong on the situation .. )
Also some product manufacturers are using their product consumption reduction to advertise yearly saved costs, but never take into account that in some sitation, 50% of the savings need to be cut off, bringing the payback terms to double ..which is not something to take lightly
example ... lighting industry
LED VS CFL VS INCAN ... i am all for LEDS ( i personally only install LEDS on all new )
But the advertised paybacks are completly off ..
a 100W incan puts out what..90W of heat ??? and even most of the light output ends up as heat when getting absorbed by difference surfaces ... so an equivalent 20W cfl /10w led
uses less energy ... but does not contribute much to the heating load
in most of the northern climate this has a pretty large impact on payback because lights are usually on only when dark, where heating loads are higher.
my 0.2 kw/h :)
Posted Fri, 03/22/2013 - 10:50
Edited Fri, 03/22/2013 - 11:16
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