In most of the under developed nations, access to basic health care is scarce. A heater is an indispensable device for many applications, especially for medical purposes. As such, a simple and easy to make heater from readily available materials becomes valuable equipment to help alleviate the human health problems. An ultra low cost (total cost including materials and manufacturing is less than a dollar per heater) heater from readily available materials like paper/cellulose acetate sheet and a pencil was designed and fabricated. Manually, using high graphite contained pencil; paper/cellulose surface was arbitrarily coated by applying numerous pencil strokes ...
USDA's Economic Research Service (ERS) defines food waste as "the component of food loss that occurs when an edible item goes unconsumed, as in food discarded by retailers due to color or appearance and plate waste by consumers." Food waste includes the half-eaten meal left on the plate at a restaurant, food scraps from preparing a meal at home and the rotten milk a family pours down the drain.
To reduce the amount of this waste I present here a concept for a mobile Food Security App generation.
The Food Security App would be for individual mobile phones where ...
Jun 17, 2017
The water flowing down the shower drain contains a lot of heat that is wasted. Using average flow rates and temperatures from the EPA, the wasted power is 18 kilowatts. The average flow rate is 2.5 gallons / minute and the drain water is 50°F hotter than the water entering your house. My new funnel shaped heat exchanger replaces the traditional shower drain and recovers half of that heat. The heat is transferred to the incoming cold water as it travels to the shower’s mixing valve.
Many inventors have attacked this problem. The cold water, as it flows inside ...
Nr.rajaram Bridge,pune, Maharashtra
Jun 17, 2017
Nearly 70% of the earth is covered by water. Only 2.5% of it is fresh & only 1% freshwater is accessible. The world is facing a scarcity of water - termed as water crisis. Wastage of water is seen and documented by various agencies. In urban lifestyle, one of the areas where water is wasted unknowingly is in gardens, terrace gardens. On terrace gardens excess water is sprayed on plants which runs off the pots. This is a huge loss of water. The intent is to control the water going to plants. This is achieved by drip irrigation, controlled ...
Currently, it is very near impossible to remove oil sheen from water. Typically, a sheen of oil remains after the majority of spilled oil is recovered and removed from a body of water. The current methods consist of using materials made from polypropylene such as oil absorbent pads to remove as much oil as possible or to vacuum the water and oil mixture into a vessel for proper disposal. Typical methods will leave a small amount of oil that is commonly visible as a sheen.
The combination of a lightweight nylon spunbond fabric to polypropylene melt blown pads or ...
Abu Dhabi, Abu Zabi
United Arab Emirates
Renewable energy challenge
(From solar thermal energy to electrical energy)
This challenge is an individual idea to use 100% sustainable energy source to provide 100 % renewable energy.
This idea is based on the use of the solar heating system consisting of thermal heat collectors of a certain area that can provide adequate thermal energy to produce a pressurized steam, that in turn will press over the water surface confined in a pressure vessel to pump it up to a higher level tank, giving the the water an increase in its ...
NASA Langley Research Center has developed fluorinated alkyl ether containing epoxies designed as an anti-insect coating. The robust and durable coating was developed to improve aircraft efficiency, but the coating could be useful in a variety of applications where reduction of insect residue adherence is desirable, such as in automotive and wind energy industries.
• Epoxy coatings are fairly inexpensive, widely used, and are simple to apply
• Improved hydrophobicity is demonstrated at low concentrations of the fluorinated aliphatic component (as low as 1wt%) due to preferential migration of the functional groups to the surface of the polymer ...
The proposed technology is a revolutionary vertical axis wind turbine (VAWT) that solves three major problems associated with wind turbines today. The first is high manufacturing/maintenance costs, the second is low efficiency, and the third is safety in stormy weathers. The developed turbine, fig (1) consists of a disc(s) and flat surface blades that can rotate about vertical shafts parallel to the main turbine shaft. The blades can only rotate relative to the disc(s) in one direction, and are restrained from rotating in the other direction by pin(s) (or other means) attached to the disc(s). As the wind flows ...
In both the chemical and mechanical pulping process, the logs are cut into wood chips by a cone shape tool before fiber separation. To make the wood chopping process more efficient, one has to investigate in detail the coupling between process parameters and the quality of the chips. One objective of thesis was to obtain an understanding of the fundamental mechanisms behind the creation of wood chips. Another objective with the thesis was to investigate whether it was possible to, in a way, tailor the chopping process so as to reduce the energy consumption in a following mechanical refining ...
Since its invention by Otto Bayer in 1937 to create a fiber that could compete with nylon, polyurethane (PU) has been widely used worldwide in the production of foams, rubbers, and protective coatings or sealants. polyurethane is a macromolecule or polymer formed by reaction of two precursors, a polyol and a diisocyanate.
Historically, polyols (organic compounds with several hydroxyl groups) and diisocyanates (organic compounds with two isocyanate groups) used as precursors to produce polyurethane are currently derived from petrochemicals (oil and natural gas). The production of these petrochemicals have irreversible environmental effects leading to the need for ...