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Ultra-low-energy consumption ultrasonic clothes dryer

energy.gov

21–30 of 192 posts

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#21
post #20
post #15

Earlier quoted context omitted.

Not to mention warm clothes is like 80% of the benefit of the dryer ;)

I didn't realize this, but yes, this is absolutely true. I wonder how many people would actually be willing to pay a premium on having their clothes warm when coming out of a dryer.

Fancy models will have a "warm" cycle that heats the clothes for the last 10 minutes.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#22
post #5

Earlier quoted context omitted.

Batteries don't last this long, why does a dryer have to? it's not all about longevity ...

Batteries are also (relatively) cheap and easy to replace. If my dryer was $50-$200 and could be carried in one hand, I'd be (grumpily) okay with it only lasting 2 years.

Must every appliance become "disposable"?

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#23

And how will my cat react to this thing? Something with enough sonic energy to vaporize a significant volume of water is probably loud enough to wake every animal in the area.

Looks like they calculated the optimum as ~500-600 Hz? That's in human hearing range too.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#24
post #20
post #15

Earlier quoted context omitted.

Not to mention warm clothes is like 80% of the benefit of the dryer ;)

I didn't realize this, but yes, this is absolutely true. I wonder how many people would actually be willing to pay a premium on having their clothes warm when coming out of a dryer.

Wonder if they could add a quick warm cycle at the very end. Still use a lot less energy but still get warm clothes.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#25
post #19

> At the end of the project, appliance manufacturers including GEA will be ready to invest in this technology and commercialize it. This will result in the U.S. becoming the leader in the clothes drying industry and generate new jobs and innovative applications of the technology. Pretty sure as soon as China is aware of this idea (if not already), they will have something in production and out the door faster and at…

The career advancement of the scientists and engineers working on the project depend on publications and outreach like this. Source: I was a post-doc at a DOE lab.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#26
post #5

Earlier quoted context omitted.

Batteries don't last this long, why does a dryer have to? it's not all about longevity ...

Because dryers are expensive appliances. If they're going to make one that only lasts one tenth as long, it better cost one tenth of the price too.

Take operating costs into account also.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#27
post #16

Earlier quoted context omitted.

And the longevity of your clothes.

This is the main reason. The difference in the longevity of my clothes -- same exact articles, same brand, same material, thickness, size and stitching -- from switching from a "hotbox" dryer to condensation dryer was initially amazing. No more did cuffs and collars start to crack and fail, nor did my shirts slowly develop small tears. The latest (2014 is when they really started to hit the market) heat pump dryers d…

You said the difference was "/initially/ amazing"; did something change later?

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#28

And how will my cat react to this thing? Something with enough sonic energy to vaporize a significant volume of water is probably loud enough to wake every animal in the area.

They likely will sonically baffle any outlet for humidity to avoid this issue.

I'm curious if the ultraound causes increased wear of the fabric at the thread ends, for example.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#29

> DOE’s Building Technologies Office is seeking new clothes dryer technologies that can increase the energy factor (EF) from 3.7 to 5.43 lb/kWh without increasing drying time by more than 20% over baseline units. They're concentrating too much on kWh. One could use the same technology and focus on variable electricity pricing. I want a dryer that I turn at night, and it dynamically turns on-and-off as electricity rat…

This is an interesting idea and probably would be useful but would only address people in single-family dwellings that don't share driers. I'm guessing that there is a reasonable use of clothes driers in commercial settings (laundry services) and shared driers in multi-family/large residential complexes (although many modern upscale projects have in-unit driers) where driers are shared.

Probably the best solution is a cultural shift to air drying. I was very surprised that when I was in the UK, a place not known for sunshine, many air dried their clothes, while when I lived in the desert of Eastern WA nearly everyone used a drier.

Re: Ultra-low-energy consumption ultrasonic clothes dryer

#30

And how will my cat react to this thing? Something with enough sonic energy to vaporize a significant volume of water is probably loud enough to wake every animal in the area.

They likely will sonically baffle any outlet for humidity to avoid this issue. I'm curious if the ultraound causes increased wear of the fabric at the thread ends, for example.

Conventional driers also cause significant wear to clothes.
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