Sustainable Technologies

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When blind persons (BP in further text), approach street crossroads with trafffic lights, they usually face the issue, how to detect WHICH beep sound is for WHICH direction? Beep sound is the same for both directions, although there are some tries to make 2 different beeps, they are not connected to walk direction at all.

In some cities in the US, beeps are connected with north-south and east-wast directions of streets, but that is very specific situation and cannot be applied to the rest of the world.

Eg., if you want to go “left” or “forward,” and you hear the beep sound, you do not know which direction is safe to go.

BUT, if we could have some object ...

A small group of scientists in Fairfax, Virginia has combined the best scientific principles from its study of cold fusion over the last 25 years into a unique design for the prototype cold fusion generator discussed below.

Innovation: The system’s reaction chamber and heat exchanger/boiler are key subsystems depicted in the enclosed illustration. This design is novel and presents the following important advances over the current state-of-the-art:
(a) utilizes pressurized hydrogen and deuterium gas and proton-deuteron (p-d) reactions that occur more easily in a cold fusion environment than other types of nuclear reactions.
(b) it is designed to produce 200 kilowatts (kW) of heat, which can be converted into mechanical horsepower sufficient to run an automobile or power homes ...

There is a major problem on the planet with air pollution from vehicles. This problem is causing major health problems with people in cities where the air pollution is prevalent. We are spending billions of dollars to try and fix the problem with the air pollution from vehicles, but we are not seeing the drastic change we need. Electric vehicles are said to be the answer, but these vehicles are also contributing to the issue due to the power it takes to charge the large battery, which in itself is a major issue. In addition to these issues, we also have an issue with fossil fuels to fuel the Internal combustion engine (ICE) vehicles.

To address these critical issues ...

We live in a world that needs more electric power. This increase in power must be produced by a source that produces no carbon dioxide. This new energy must also be present in large quantities and must be able to be extracted cheaply. There are many sources of thermal energy in which there is only a small temperature difference between the source and the sink. These sources include geothermal energy, ocean thermal energy, many solar sources, waste heat from engines, waste heat from industrial processes, and differentials between atmospheric temperature and ground temperature. These sources have enormous amounts of thermal energy. However, since the efficiency of tuning thermal energy into mechanical energy is based on the temperature differences, these ...

Solar still technology is well developed. Solar stills today can be manufactured easily and cheaply. Solar stills are one of the cheapest ways to produce fresh water. A solar still that could provide both freshwater and electric would be a boon to the world. Most poor areas need both freshwater and electricity. Also, solar stills are found in most survival kits. The solar stills in these kits could be adapted by adding two porous electrodes so that the still could produce both electric and fresh water, both highly desirable in a survival situation.

Figure 1 shows the use of forward osmosis to produce a solar still and electric. The solar still comprises a tub of water and a transparent ...

In some cold climate areas where infrastructure is not developed sufficiently co-generation plants or even heat-only boiler stations are used to heat buildings. Diesel oil in many cases serves as a source of electric power. Its delivery is too expensive, and unduly delay can lead to power cuts.

At the same time, the highest wind energy potential is concentrated in the northern regions. The main problem is that this source of energy is unpredictable. Moreover, power load in such areas is even less flat in particular due to lack of connection with other power systems.

So, we could use water heating as a powerful and adjustable electric load. Water is a matter with large heat capacity. It would collect ...

Illegal immigration is very critical matter in many countries and there have been many technological attempts to block or monitor illegal immigrants like using drone and sensors. But none of them are found to be reliable so the most technologically advanced country is building a wall which is the oldest technology humans created. But this wall structure whether it is metal or concrete has its drawbacks. Metal structure wall can be cut with home tools and concrete can be destroyed with acid. Since the wall are built in remote areas illegal immigrants has the time to operate on the wall to get in the country. So no matter it is strong it can be bypassed as seen in the ...

For centuries, we covered our buildings with a heavy roof that traps heat, which makes it necessary to use Air Conditioning as well as extensive lighting for being so Dark.

Now, with this Multilayered Roof, the heat is dissipated by the wind through the many layers, and because the material is semi-transparent, a lot of light reaches the ground, needing no artificial light.

This new Roof Design saves thousands of dollars on costs in Air Conditioning and Lighting, is specially designed for sunny areas with little rain, and its construction is less expensive than traditional roofs.

This New Green Tech is going to be common in the future ...

The issue with lithium ion batteries is that in each one there is enough electrical energy to create a spark, and they are filled with a flammable electrolyte. The only thing preventing the spark is a thin plastic separator, sometimes less than 10 microns thick. If there is a defect or damage to the cell that penetrates the membrane, then a spark occurs and the battery can light on fire.

What if you could make a battery in which it was impossible to create a spark?

We present a new lithium battery architecture which does just that. In this architecture, the metal foil current collectors have been replaced with polymer films that are coated with just enough metal to ...

Our design idea, Neighborhood Resilience Centers (NRCs), solves the problem of access to power and communications following a disaster. Whether natural (earthquake, hurricane) or man-made (cyber or physical attacks on the electric grid), the lack of widely-available resilient energy and communication services complicates and lengthens recovery efforts, increases stress and suffering in the affected population, and contributes to loss of property and life.

NRCs are modular microgrids that combine solar energy, battery storage, and satellite communications and operate both pre- and post-disaster. During normal operations, NRCs interconnect with the electric grid, producing green energy and providing significant economic benefits for the host facility and electric utilities.

During power outages, NRCs disconnect from the grid and power critical electric loads, ...

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