Literature Review carried out in the field of solar Air heater

Subject Areas : Renewable energy

Ali Heydari ¹ , mikaeel Forati ²

1 - هیئت علمی
2 - student

Received: 2017-02-08 Accepted : 2017-02-20 Published : 2017-05-22

Keywords: Exergy, Hybrid, Photovoltaic cells, Air heater solar, Commutator,

Abstract :

To reduce energy sources, efforts are underway to optimize thermal processes around the world. Solar energy as an important source of renewable energy on Earth, with simple technology cause reduction in air pollution and saving the environment with less fossil fuels consumption for the future. One application of the solar energy is solar air heaters which different design is done for different application. To ensure the performance of energy systems, analysis of first and second laws of thermodynamics can be more useful to analyze processes undertaken within the system. Exergy is considered as a key concept and it is a fundamental concept of accessible energy. Solar air heaters can be based on its performance cycle was divided into two categories: active and passive. In passive systems mainly based on the difference in specific gravity of air, naturally flow of warm and cold air is formed. But in activated systems a forced convective air flow is derived with external component like fan.