Thermal Analysis Of Solar Collectors

Solar thermal power plants use concentrating solar collector systems because they can produce the high temperature heat needed to generate electricity.

Thermal analysis of solar collectors.

This is defined as the ratio of the useful energy delivered to the energy incident on the collector aperture. The thermal analysis is based on a combinat ion of the collector thermal loss from radiation convection and conduc tion. Udayakumar1 and muhammad ali2 1department of mechanical engineering bits pilani dubai. In this section the thermal analysis of the collectors is presented.

The main thermal loss from the absorber tube. Kalogirou department of mechanical engineering higher technical institute p o. Like a flat plate collectors an energy balance on the absorber yield the following equation under steady state conditions. The collector focuses or concentrates solar energy onto an absorber.

It also gives the definitions of different features characterizing solar thermal devices. Solar thermal collectors and applications soteris a. Box 20423 nicosia 2152 cyprus received 18 june 2003. A detailed design of the evacuated tube collectors is enumerated followed by the thermal network analysis of this collector.

In the introductory section the classification of the solar thermal collectors is reported. Thermal analysis of concentrating collectors. Research on pvt started during the mid 1970s focused on pvt collectors with the primary aim of increasing pv efficiency. Equ 4 106 is written under the assumption that the contribution of the diffuse component of solar radiation is negligible.

The temperature of each component is determined empirically. Accepted 10 february 2004 abstract in this paper a survey of the various types of solar thermal collectors and applications is presented. Pvt solar collectors which basically combine the functions of a flat plate solar collector and a photovoltaic panel convert solar radiation directly into both electrical and thermal energies. The two major types of collectors flat plate and concentrating are examined separately.

Note that the presented classification is based on these features. The basic parameter to consider is the collector thermal efficiency. The collector usually moves throughout the day so that it maintains a high degree of concentration on the absorber. Accepted march 2 2011 a detailed design of the evacuated tube collectors is enumerated followed by the thermal network.