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I wish there were better options for inexpensive, miniaturized heat pumps. I can think of all sorts of applications where it'd useful to have them. Plunge poo
by alexose 4y ago
I wish there were better options for inexpensive, miniaturized heat pumps. I can think of all sorts of applications where it'd useful to have them. Plunge pools, hot tubs, trailers, greenhouses, dog houses, etc.
- xani_ 4y agoThere are ultrasonic heat pumps (used in JWST for example, precisely because of vibraiton issue), but it will take time till it will be mass produced. No refrigerant needed either
- hinkley 4y agoAre those a variety of thermoacoustic heat pump? I remember Ben & Jerry's threw some money at a group working on TAHPs and then... nothing.
- xani_ 4y agoSame thing different name. I said ultrasonic because that's the wavelength you need for it to be compact The basic way of working it is basically * lowering the pressure of gas causes it to cool, increasing it causes it to heat * creating standing wave in a gas in pipe means the low pressure part will be cold, high pressure part will be hot, and the difference will equal to basically pressure induced thermal difference sooo a fancy speaker in the tube. Already stuff that can be bought, just didn't get to the level required for consumer stuff. Supposedly they can be pretty efficient too. Would also be basically noiseless, as the ultrasonics are limited to the cooling tube and easier to dampen anyway.
- alexose 4y agoThis is extremely cool! Here's a video I found where someone makes a DIY thermoacoustic cooler: https://www.youtube.com/watch?v=kkBBkQ8jFRY https://www.youtube.com/watch?v=kkBBkQ8jFRY