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Solar thermal

Solar thermal

  • Thermomechanical Cycle for Thermal and/or Mechanical Energy Conversion Using Ferroelectric Materials

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    Product
    Technology:

    Professor Pilon and colleagues have developed a new energy cycle that converts thermal and/or mechanical energies directly into electrical energy. With the ability to harvest waste heat the cycle could be used to increase the efficiency of systems like internal combustion engines heat pumps and refrigeration systems. Mechanical energy harvesting could be used to salvage energy from roads and various transportation systems.

  • Heat Transfer Enhancement in Pipe-in-pipe Heat Exchangers Using Magnetohydrodynamic Effect

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    Product

    Background: There is a significant need for more efficient heat transfer techniques in conversion utilization and recovery of energy. Traditional techniques used to enhance heat transfer rely on reducing the thermal resistance in a conventional heat exchanger by promoting higher convective heat transfer coefficients. In particular swirl flow enhancement is popular since secondary recirculation on the axial flow in a channel can be used for single-phase as well as two-phase flows.

  • Forward Osmosis Processes in Water Treatment using Hydrophilic Superparamagnetic Nanoparticles as Draw Solutes

    Type: 
    Product

    This invention relates to a method of fabricating hydrophilic superparamagnetic nanoparticles for forward osmosis by taking a thermal decomposition approach via a one-step reaction. The current process of fabricating such nanoparticles require several steps and give rise to a few unfavorable features such as inconsistent particle size as well as lower yield whereby size distribution and yield are important features that affect the efficacy of nanoparticles as draw solutes in the forward osmosis process.

  • Biomimetic Spiral Pattern for Heliostat Layouts

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    Product

    Problem: Optimizing the heliostat field layout results in substantial cost savings Technology: The invention presents a new model to calculate the optical efficiency of a heliostat field accounting for all significant factors affecting the performance of central receiver solar thermal systems like projection losses shading and blocking aberration and atmospheric attenuation. It also proposes an improved biomimetic pattern for heliostat placement inspired by the spirals of the phyllotaxis disc pattern.

  • Humid Air Turbine - Combined Cycle Hybrid

    Type: 
    Product

    The Humid Air Turbine (HAT) cycle is an intercooled gas turbine-based cycle which utilizes generation of water vapor by directly contacting pressurized air leaving a compressor of the gas turbine with hot water in a counter-current humidifier and circulating the water leaving the humidifier to recover heat from the aftercooler and the stack gas. The resulting advantages of the cycle are: (1) high thermal efficiency (2) high specific power output (3) low NOx emissions.

  • FREEWHEELING HYDRAULIC TRANSMISSION FOR VEHICLES

    Type: 
    Product

    A freewheeling hydraulic Pump/Motor installed between the engine and the gear box is connected to a low pressure hydraulic accumulator on one side and to a high pressure hydraulic accumulator on the other side. 1. The braking and deceleration energy is converted to hydraulic energy and stored in the high pressure accumulator to recycle the energy efficiently . 2.

  • Fabrication of Thin Film MEA Structures for Fuel Cells

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    Product

    Stanford engineers have developed a fabrication method for ultra thin large surface area pinhole free ion conducting membranes on inexpensive substrates to make cost effective high performance fuel cells or electrolyzers. The resultant membrane electrode assembly (MEA) allows significant reduction in resistive losses as well as lowering of the operating temperature. The invention further provides a method to deposit 3-dimensional surface conformal films that may have compositional grading for superior performance.

  • High Temp Heat Transfer Fluids (250 C - 1000 C) for use in Energy Capture Systems

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    Product
    Technology:

    Background: While much of solar energy generation is focused on photovoltaics there is increasing attention on concentrating solar power systems which use focused solar light to heat thermal storage media. Often these media take the form of high-temperature oils or molten salts. Most thermal storage suffers from drawbacks in one or more of the following areas: cost availability minimum temperature maximum temperature or corrosion. Accordingly there is a need for thermal storage materials that are easy to obtain operate over wide temperatures and resist corrosion.

  • Energy Harvesting Using A Thermoelectric Material

    Type: 
    Product

    A novel energy harvesting system and method utilizing a thermoelectric having a material exhibiting a large thermally induced strain (TIS) due to a phase transformation and a material exhibiting a stress induced electric field is introduced. A material that exhibits such a phase transformation exhibits a large increase in the coefficient of thermal expansion over an incremental temperature range (typically several degrees Kelvin).