2017
Sustainable Technologies

Many wind turbine gearboxes suffer from overload problem and frequent maintenance and the inability to start at low velocity wind speed condition (called as cut-in), in particular due to the inertial due to structural significance. The amplification of the wind generation depends on the use of mechanical gears and gearboxes for speed change once again in influences the frequency as constant speed derived from the turbine is yet another challenge. An emerging alternative to gearing system is the application of a magnetic gear as it offers significant pros such as reduced noise and vibration, free from maintenance, and inherent overload protection. High-speed electric generators are often used in many operating wind turbines; thus, the relatively low rotational speed of ...

Recently, the world has seen various non-conventional sources being successfully commercialized. However, their cost and efficiency is still a major hurdle in their global acceptance over fossil fuels.

The existing rotor blade method of harvesting the ubiquitous wind energy has quite a few drawbacks so we propose a new wind energy scavenging technique which uses Vortex Induced Vibration (VIV) based on “Von Karman effect”.

This effect is observed when a fluid flows over a bluff body (cylinder in this case) causing uneven distribution of pressure around it. The idea revolves around a precisely designed cylinder vibrating resonantly over a wide range of wind velocities. This range can further be widened with proper choice of material and some modifications. The ...

1 Nature of technology/product. The HI-Light reactor being developed at Cornell University is a solar-thermocatalytic “reverse combustion” technology that enables the conversion of CO2 and water to methanol and other high-value hydrocarbons. The innovative claim of the HI-Light reactor design derives from the concurrent optimization of light-coupling and catalyst availability. In the HI-Light design, the tubes are internal light-guiding rods with specially designed scattering surfaces that enable deep and efficient penetration of the solar radiation captured from a parabolic light concentrator into the reactor. The reagents and products flow through the shell outside the rods. The optical energy focused into the reactor interacts with our catalyst to convert incoming sequestered CO2. Photons with energies lower than those required for ...

Recently the regulation of engine exhaust gas is more and more tight and in electricity generation industry gas engine is more and more promising instead of turbine using liquid fuel and diesel engine. Because gas engine using natural gas has advantage of stable supply and low exhaust harmful gas, the demand of gas engines rapidly increase in electricity generation industry.

I think the adoption of gas engine is best to overcome the problem of air pollution, high price of oil and shortage of oil. Specially shale gas boom rises in USA, Canada and so on. In the long term view, because the supply increase and the price stability of natural gas, it is needed to develop the high efficient ...

The objective of the project is to design a wind turbine to recapture wind energy from vehicles on the highway. Wind energy is considered the fastest growing clean energy source. However, it is limited by variable natural wind. Highways can provide a considerable amount of wind to drive a turbine due to high vehicle traffic. This kinetic energy is unused. Research on wind patterns was used to determine the average velocity of the wind created by oncoming vehicles. The wind turbines are designed to be placed on the medians therefore dow from both sides of the highway will be considered in the design. Using all of the collected data, existing streetlights on the medians can be fitted with these ...

The project presented focuses on improving Hybrid Photovoltaic/Thermal (PVT) Systems in terms of electrical and thermal efficiencies. Heat is known to directly affect the performance of Photovoltaic (PV) cells, hence as a novelty, this project concentrates on dissipating and reusing the heat build-up on the PV cells. Parabolic Trough PVT systems have the advantage of being able to concentrate sunlight onto a focal point to generate very high temperatures of heat. This project makes use of the Parabolic Trough design to focus sunlight along a copper pipe through which a Heat Transfer Fluid (HTF) flows to absorb the heat and dissipate it to water inside a tank through a heat exchanger. This closed loop setup is designed to achieve ...

Hybrid Photovoltaic Thermal (HPVT) system collects both photovoltaic and thermal energy from incoming sun light. Conventional solar panel collects photovoltaic energy but wastes solar thermal energy in sun light. The proposed HPVT system collects photovoltaic energy with conventional solar panel and reflects IR rays from the panel towards an Electronic Carnot Engine (ECE) and converts solar thermal energy into electricity directly without the need of a generator. Please ref. www.kanslab.com under ECE ...

Solar and wind energy are clean and renewable but their energy content is both low and costly to store. A two-mirror solar Stirling engine (SE) design could be a major step towards the high efficiency (>37%) concentrating solar power (CSP) system that would collect and convert the diffuse component of the sunlight which is mostly missed in a traditional CSP.

The design combines the commercially available photovoltaic (PV) panels with heat reflective cover and SE with 6-hour thermal energy storage. A dish SE at Sandia National Laboratories (Sandia) will be utilized as the PV-assisted system prototype . For several years the two-mirror Cherenkov telescope had been tested at Sandia.

The adjustable angle PV panels 2 ...

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.

BENEFITS
• 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 and incorporation of particle fillers
• Production of the fluorinated aliphatic component is relatively simple, with a commercially available precursor ...

The idea of this project initiated from reduction of fuel consumption and exhaust emissions in SI engines. We studied various types of additives in gasoline for the SI engine. Out of them we found Hydroxy or HHO gas is a very convenient additive for SI engine. We generated HHO from dry cell. For required flow rate we tried various iterations and configurations. The dry cell is nothing but an HHO generator which generates HHO gas from an electrolysis process. In the electrolysis process the water is split into oxygen and hydrogen and the mixture of these two gases is known as hydroxy or HHO gas. The electrolysis process requires one additional member to split the water like NaOH , ...

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