Vacuum Cleaners

narfzorkpinky asked:

The refrigerator works by creating a vacuum in a system of 2 chambers to drive a thermodynamic reaction (boiling of water) at room temperature. The lowering in vapor pressure of the water, drives the water to boil. In order to do this, the water must capture heat from a system (the inside of the refrigerator). The continued pedaling (which drives the vacuum pump down to 10^-2 atm) will ensure that the water freezes as it continues to boil. After only about 10 min of pedaling, the valve to the vacuum pump can be shut off, and the zeolite container line opened. Zeolite are common absorbers based on aluminum silicates and will swell up to 30% its mass with water. The zeolite then absorbs the vapor produced by the boiling of the water, and, in order for the liquid water to remain in equilibrium with the vapor phase, it must continue to boil (for up to a day). In general, one can achieve constant temperatures of 0-6 Celsius for 1 day with only 10min of pedaling. Now this is a real way to cool for cheap. Even ice cubes can be made, and one cool advantage of this system is that the hotter it is outside, the more cold you can generate!

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bye bye asked:


I try to vacuum at least every other day, but probably should do it everyday.
I have a small child who is always playing on the floor, otherwise, it would not get done that often

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CzaLeo asked:


I am looking for an inexpensive vacuume but one that does a good job. Anyone have any suggestions? I owned a Eureka Altima Turbo Bagless Upright SpinDuster. It is horrible I only had it for 2 months and now it doesn’t work. So let me know what you have and what you recommend?

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poutamo asked:

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unknown asked:


My wife does a lot of hair, and we’ve been looking for a good quality vacuum cleaner to use for picking up hair off of the carpet. Which would be better to use in this situation, an upright vacuum cleaner or a canister/shop vac? Right now we have a Bissell, 12 amp, upright pet hair remover vacuum cleaner.

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HSN asked:

Prices subject to change. Please visit www.hsn.com or call 1-800-284-3100 for the current selling price. The next evolution in food-sealing technology has arrived with this Rival Seal-a-Meal Vacuum Food Sealer. This convenient food sealer not only makes food storage a cinch, but it saves that fresh flavor for the next time you have the munchies. Rival Seal-a-Meal Vacuum Food Sealer Includes: Vacuum sealer unit Removable drip tray (10) 1 quart bags (5) 1 gallon bags Smart guide to vacuum storage Product Features: One-touch and Sealing LED Microban Antimicrobial Protection on drip tray Model #VS-100HSN Comes with manufacturer’s 1-year limited warranty Keywords: Home Shopping Network, HSN, HSN TV small…

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Richkidd89 asked:


How to build a small powerful vacuum? Smaller then normal vacuums?

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Fatdude427 asked:


Of course, buying a new vacuum is one possible answer- but we would like to avoid that if we can.

Sorry, I don’t know the specs on the vacuum. It is just a regular vacuum cleaner that uses bags.

It has a bad odor when turned on.

Can we clean the vacuum somehow- if we cleaned it and changed the bag, would that remedy this problem?

Thanks!

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Curious_JB asked:


I was going to buy a Dyson 07 All Floors vacuum, but many people are saying it is not worth the money.

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GREENPOWERSCIENCE asked:

solar thermal training. Green Job Career Training. Learn Solar. www.greenpowerscience.com BOILING WATER. I am working in a very efficient boiler that can retain more heat. The concept can also be used in the large Stirling Engine. If very little heat escapes from the boiler or displace side of a Stirling Engine, the efficiency and power will go way up.

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