John Lussmyer via EV wrote:
I just upgraded the heater in my truck from a single ceramic core (nominal
1500W) to 2 of them.
Measurements show that I'm getting about 2000W of heat total when the fan is on
hi.
Even though each core is wired for 240 VAC, and I'm driving it with 327VDC.
Wonder if these actually draw 1500W when plugged into AC? (too much of a PITA
to check mine now.)
The actual power consumption (and thus heat produced) by these ceramic
elements depends *strongly* on the airflow through them. More airflow =
lower resistance = more heat.
I have found that most commercial heaters that use these elements have
weak fans, and thus don't provide nearly as much heat (nor draw as much
wattage) as claimed, except for a very brief time as the are first
warming up.
--
The prime instinct of children at play is to build and to create.
They will make things of whatever materials are at hand, and use the
whole force of dream and fancy to create something out of nothing.
-- Alfred P. Morgan
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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