Infill panels and partitions are widely used non-structural elements in reinforced concrete buildings, characterized by a significant seismic vulnerability as testified by disastrous collapses observed during recent earthquakes, for both in-plane and out-of-plane actions. The most advanced building codes foresee mandatory verifications of these elements, both when designing a new building and when assessing the seismic adequacy of an existing one. Moreover, recent evaluations have shown that, after low-intensity earthquakes, damage of non-structural parts strongly influences repair costs for typical multi-storey buildings. In this occasion an innovative concept for infill panels and partitions is presented, in which (either concrete ...
It is based on the principle of working of perendev motor, which was deemed impossible because it was a perpetual motion machine and no further development of that motor was continued. Here I am reusing that principle but with certain major changes to it. I have replaced the permanent magnets in the motor using electromagnets, that is it now doesn't contradict the perpetual machine theory.
Working of perendev: it was just based on the fact that like poles of a magnet repel each other, this is the principle used here as well. We proposed to now use the same ...
According to the EPA, every weekend about 54 million Americans mow their lawns, using more than 15,000,000 gallons of gas (that’s more the 800 million annually) and producing tons of air polluting volatile organic compounds and nitrogen oxides. More than 325,000 gallons (that’s 17,000,000 annually) are spilled just filling them up – that’s more than what was spilled by the Exxon Valdez disaster.
Studies have shown that one gas mower running for an hour emits the same amount of pollutants as eight new cars driving 55 miles in an hour.
Replacing 500 gas mowers with electric or non-powered mowers would ...
San Francisco, California
ExoHab is a high-performance, sustainability ecosystem for space and Earth. The ExoHab concept is an open, plug-and-play framework for small, standalone space habitats or networks of habitats and work facilities.
At a hardware level, the ExoHab ecosystem would be built around 6.1 meter long, pressurized shells that are based upon the ISS multi-purpose logistics module (MPLM). The MPLM is space-tested hardware that is already compatible with existing space systems. The MPLM is relatively small, so that it can be launched on several rockets including the SpaceX Falcon 9 (or Heavy Thrust version for a highly loaded module).
A baseline ...
In retrospect the basic idea behind recycling, is to reuse materials from an existing structure or product in to a new structure or product. But recycling usually takes several stages over a long period of time. What If there was another way to achieve the same effect. Imagine a world where it would be possible for the broken fender of a car, to be reformed back in to its original shape in one step and with its structural performance intact and without the use of patches , glue or refill materials. Better yet let's take that concept a step ...
The windmill is a standard green energy conversion system that uses the mechanical input produced by blades that capture the surrounding wind currents, redirecting them in order to create a rotational force that then turns a shaft connected to a generator that produces electrical current. Most often, windmills generate their electricity using a permanent magnet machine, i.e. generator. Standard permanent magnet machines used in industry involve different variations of a rotor stator combination that allow for the production of either a mechanical output (if the input to the system is electrically driven) or an electrical output (if the input ...
The current invention concerns recycling. The concept is simple. Take an item out of the garbage and turn it into something useful- something people will eat from. This is accomplished by cutting a glass bottle in two. By cutting a bottle in two you create a drinking glass (or a caddy) and a funnel. There is nothing novel about cutting a bottle in two. It is more problematic as glass is a brittle material that is difficult to work with. The material can be cut by diamond grinding, - using a form cut off wheel on a lathe ( ...
The design of the prototype is based on three stages which transform PET (polyethylene terephthalate) into cotton fibers, which can have different applications, including packing stuffing, stuffed toys, pillows, or synthetic thread.
The design moves around three important stages of transformation:
The first is the ignition of PET in small precut flakes, (between 5 and 7 mm2) by the hopper which is responsible for feeding a screw that is housed in a jacket (cast iron) at high temperature and is responsible for Transform the PET from solid to liquid phase.
The second stage presents a centrifugation of the liquid ...
Jul 1, 2017
The most common contaminants of water are organic compounds, bacteria and protozoa that pose a great risk to human health. However, the existence of recalcitrant pollutants prevents effective treatment by conventional methods. A novel environmentally friendly alternative for the elimination of recalcitrant pollutants is the advanced oxidation processes, such as photocatalysis (TiO2).
LimpiAgua is a device that is used to treat water, based on TiO2 photocatalysis. This device is very useful in developing countries where many people do not have access to drinking water and therefore children and the elderly tend to be constantly sick and in rural areas. ...
The increased demand of energy in domestic applications necessitates the development of innovative engineering solutions in building Heating Ventilating, and Air Conditioning (HVAC). As the biggest energy consuming sector in domestic buildings, more focus is currently directed to decrease air conditioning energy consumption. Double-pipe heat exchangers are considered as one of the practical solutions in today`s HVAC industry. Nevertheless, there are few studies focusing on utilizing double-pipe heat exchangers in air conditioning applications.
This product is an air conditioning unit based on double-pipe condenser and evaporator. Deionized Water (DIW) was used as the secondary heat transfer fluid for both ...