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Thermoacoustic device for conversion of solar energy to electricity.

Author(s) : FIRAK M.

Summary

A small experimental standing wave thermoacoustic device for electricity generation using concentrated solar energy has been constructed and tested. It consists of hermetically closed resonant housing with transparent glass window for solar energy input, ceramic thermoacoustic stack, cooper cooler, and linear alternator. The working medium inside the housing is air at normal pressure. When there is a sufficient temperature difference at the ceramic stack, it produces sound standing waves. These waves provoke a linear alternator to produce electricity. Solar energy is collected and concentrated by means of a parabolic mirror. Output alternating electricity is converted to heat in the variable electrical resistor (load) connected to the coil to the coil of the alternator. Alternating voltage, current and power have been measured and analysed. The overall system efficiency can be determined by comparing input solar power and output electrical power. The aim of the presented device is to study appropriate design, construction and materials to build a more efficient device and for demonstration of this concept of CO2 free electricity generation.

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Format PDF

Pages: pp. 101-109

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Details

  • Original title: Thermoacoustic device for conversion of solar energy to electricity.
  • Record ID : 2010-1466
  • Languages: English
  • Source: Energija i okolis 2008. Medunarodni kongres: XXI. znanstveni skup o energiji i zastiti ikolisa./ Energy and the environment 2008. International congress: 21th Scientific Conference on Energy and the Environment.
  • Publication date: 2008/10/22

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