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I was thinking about peltier heated clothes dryer the other day. Traditional electric dryers heat to approximately 210 degrees using 240v and about 2500 watts.
by smileysteve 6y ago
I was thinking about peltier heated clothes dryer the other day.
Traditional electric dryers heat to approximately 210 degrees using 240v and about 2500 watts.
Recently, (compressor) heat pump dryers have come to the US for ventless options.
So to produce 210 degree, 2000 watt of heat where peltiers are at least more efficient as generating heat than resistors, seems possible with a 750 computer power supply.
- londons_explore 6y agoCheck your math. Peltiers get much less effective as the difference in temperature of the hot and cold sides increases. I imagine a drier would need a hot side ~100C (the equivalent electric elements get red hot after all!). Peltier units with 80C of temperature difference between the sides have very very low efficiency.
- smileysteve 6y agoI always thought the low efficiency was in cooling, not in heating. Dryer body is already acting as a heat sink for the (air-gapped) hot side and heating interior air at 22 degree c