Solar energy for preheating ventilating air

Heating, Ventilating, and Air Conditioning Control Systems

Texas A&M University 11.

Heating of Air by Solar Energy

تحلیل عددی اثر باد بر عملکرد کلکتور خورشیدی بدون پوشش نفوذپذیر

Considering problems associated with nonrenewable fuels such as pollution and high cost, efforts are being made to develop use of renewable energy sources like solar energy. Solar collectors could often be employed as important devices for thermal applications. Unglazed Transpired Collector (UTC) is a modern preheating and heating equipment used for ventilating air or drying crops. Heat transfe...

Production of High-energy Gravitinos during Preheating

We present a new technique for the calculation of helicity ±1/2 gravitino production during preheating. It is based on the equivalence between goldstinos and helicity ±1/2 gravitinos at high energies. The problem is thus reduced to the standard (Majorana) fermion production after inflation. Comparison with the results obtained in the unitary gauge is also presented.

Energy Modeling and Simulation including particle technologies within Single and Double Pass Solar Air Heaters

In order to obtain the best performance of the solar air heaters, it is necessary to find optimum performance conditions. The aim of this research paper is to achieve optimum conditions, by comparing single and double pass solar air heaters. Also, a brief review study of various related research works of all scenarios for a single and double pass and packed bed (including particle technologies)...