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Tag: eco-friendly

Stop wasting water: with this new incredible invention, you won’t have to worry about leaving a water faucet running again!

The issue:

Once in a while, people accidentally forget to turn off a water faucet (e.g. a bathroom or kitchen faucet) and leave it running all day.

This wastes water, and is unacceptable.

Proposal:

There are existing solutions to automatically turn off faucets, but generally they are either incredibly annoying (the motion-activated faucets that work approximately 50% of the time) or require some powered / electrical component, which makes them unsuitable for normal home installation.

Since we want to avoid mixing electricity and water (and avoid having to call an electrician for this simple home improvement), the proposal is as follows:

  1. 1. A standard sink faucet that operates as normal under most circumstances, except for:
  2. It has a tiny waterwheel in the path of the flowing water that (very, very, slowly) winds up a spring. (Note that we are siphoning off an incredibly small amount of water pressure here, to power the water wheel.)
  3. Once the spring has been sufficiently wound up (over a period of, say, 5 minutes), it triggers and applies a force the to the faucet handle, causing the tap to close, as illustrated in Figure 1.

 

 

1-faucet.png

Fig. 1: This automatically-turning-off water faucet is entirely mechanical, and has no electrical components to fail and/or electrocute the user. The waterwheel and spring/gear mechanism (not shown) would go in the path of the water flow.

Conclusion:

This automatic-tap-closing solution requires no electrical components and has very few moving parts.

Additionally, if the spring mechanism does fail, it will cause the tap to simply revert to being a normal tap, rather than negatively impacting the use of the faucet.

In the rare instance when the user does want to leave a tap running indefinitely for some reason, there could be a special lever that disconnects the waterwheel from the spring, letting the faucet run indefinitely.

The actual implementation of the waterwheel and spring is left as an exercise to the reader.

PROS: Saves water, maybe?

CONS: May be excessively mechanically complex for a situation that only occurs about 0.01% of the time someone turns on a tap.

Save time AND the environment with this new gadget that encourages people to shut down their laptops more often. Finally, the product that the market has been clamoring for: the laptop remote-start key fob.

Background:

Some cars have a “remote start” feature to start a car before you actually get inside. This feature is typically used in regions with extremely cold  weather.

The issue:

Some people like to entirely turn off their laptops when traveling or over a weekend.

But then they have to wait a couple of minutes for their laptop to boot, log in, and start all their applications / open documents again.

Think of all the lost productivity!

Proposal:

Instead of losing precious time on Monday morning waiting for a shut-down-over-the-weekend laptop to boot, your laptop could have a special low-power “wake up” mode activated by a remote control. This would be exactly like a car remote-unlock key fob.

A comparison of laptops with and without this remote-start feature is shown in Figure 1.

1-laptop-remote-comparison.png

Fig. 1: Top: this old-fashioned laptop doesn’t have a remote-start feature, so someone is going to have to wait several seconds for it to boot. Bottom: thanks to the remote control, the laptop on the bottom is ready to go by the time its owner walks up to it.

Conclusion:

The laptop remote could be a new differentiator between brands in an otherwise commoditized market. When every other laptop is the same, surely consumers will flock to buy the one with the “remote start” option!

PROS: Saves valuable employee time. Additionally, probably several watt-hours per year per laptop, since it encourages people to shut down their laptops. The amount of energy saved probably offsets up to a whole day of increased energy usage due to global population growth.

CONS: It might take longer to locate this remote control than to just turn on the laptop by walking over to it.

Save over TWO DOLLARS per year with an eco-friendly dental floss trick for the environmentally-conscious. Dental floss manufacturers hate it!

The issue:

Dental floss has a serious problem with unnecessary waste: each length of dental floss has a “dead zone” at the ends that is used to wrap around fingers.

This unused region is thrown away without ever having been actually used as dental floss (Figure 1).

1-utilized-region.png

Fig. 1: Only the middle part of a length of dental floss (highlighted in green) is actually used; the ends are wasted.

Proposal:

Instead of wrapping the dental floss around your fingers in order to hold it, it would be ideal if you could just grip the floss directly. This would avoid the wasted end regions, but, unfortunately, human hands are not optimized for this use case.

Fortunately, there is a tool that is perfect for this application: locking pliers (A.K.A. Vise-Grips™).

Instead of wrapping floss around your fingers, just hold the floss directly with two pairs of locking pliers, one in each hand, as shown in Figure 2.

 

2-pliers.png

Fig. 2: Note how much more of the floss can be actually used (usable region highlighted in green), as compared to the situation in Figure 1. The locking pliers remove the need for the wasted “end loops” of dental floss.

Conclusion:

In 2019, $6 will buy you 120 meters (4724 inches) of dental floss, which translates to 1/8th of a cent per inch. So if you save six inches of dental floss per day, that’s (600 cents / (4724 inches / 6)) = 0.76 cents per day of savings.

PROS: Saves 6+ inches of dental floss per day, or ¾¢ per day! Over the course of a year, this saves a grand total of $2.78 in 2019 dollars, which could buy you two small coffees at a fast-food establishment.

CONS: A person who uses these will probably inadvertently chip a tooth or knock one out completely with these pliers. Maybe they should be plastic instead of metal.