Re: Music for Sysadmins...



Jasper Janssen <jasper@xxxxxxxxxxxx> wrote:
Unless you want to switch the heater on specifically shortly before you
use the toilet, the more relevant measure might be the heat loss from a
given temperature to the air over time, which is how much it'll cost to
*keep* the seat heated.

True, but that's a little harder to work out without more experiments.
If you have enough heat to warm it from dead cold to butt-compatible in
a short interval, you're almost guaranteed to have enough heat to keep
it warm. As a nod to energy-saving, it might be useful to idle the
heaters at, say, 25% of full power, and switch to full power once motion
is detected in the bathroom.

It would be really neat if you had enough power to get the seat up to
temperature in the interval between dropping your pants and flesh
touching the seat. But you'd probably need a dedicated (PID?)
controller and lots of limit thermostats to make that even begin to
approach safe.

Matt Roberds

.



Relevant Pages

  • Re: Lahman, how ya doing?
    ... in temperature dT of a thermal mass with heat capacity C and summed input ... >> Which would conveniently make the thermal link just another source (or ... amount of power flows from the target to the sink. ...
    (comp.object)
  • Re: Measuring Power dissipation emperically
    ... the temperature of the water. ... This is how they measure the power dissipation ... the heat would just accumulate. ... The water will heat up. ...
    (sci.electronics.design)
  • Re: OT: Toaster oven problem
    ... glass bakeware that doesn't mind the heat. ... Decide the temperature you want the outside to be. ... Now you know the power per unit surface area. ... but you can keep the inside surface temp ...
    (sci.electronics.design)
  • Re: Warning about cheap TVs currently on sale
    ... discussion was whether the TV consuming power at 100W would also be radiating energy to the room at 100W. ... So we have less heat trasnfered from the source to the room. ... Insulation will indeed change the rate of flow of heat - it increases the "thermal gradient" or the temperature drop across the boundary. ... So, if your electric fire had a thermostatic control such that it turned off once the room temperature reached 25 degrees, then sticking it in an insulated box would change the power consumed and passed to the room since the internal box temp would very quickly reach 25 and turn the heater off. ...
    (uk.tech.digital-tv)
  • Re: muonic matter questions
    ... I expect the temperature might approach a billion degrees, ... heat can be conducted and radiated from the chip ... If the scale factor is 200, then it's the _power_ that would increase by ...
    (rec.arts.sf.science)