Solar flat plate and concentrating collectors pdf

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• Write difference between flat plate collectors and concentrating type collectors
• 3.1 Overview of Flat Plate Collectors
• Flat Plate Collector
• 3.1 Overview of Flat Plate Collectors

A Flat Plate Collector is a heat exchanger that converts the radiant solar energy from the sun into heat energy using the well known greenhouse effect. It collects, or captures, solar energy and uses that energy to heat water in the home for bathing, washing and heating, and can even be used to heat outdoor swimming pools and hot tubs.

Write difference between flat plate collectors and concentrating type collectors

These devices are primarily used for active solar heating and allow for the heating of water for personal use. The use of these solar collectors provides an alternative for traditional domestic water heating using a water heater, potentially reducing energy costs over time. As well as in domestic settings, a large number of these collectors can be combined in an array and used to generate electricity in solar thermal power plants. There are many different types of solar collectors, but all of them are constructed with the same basic premise in mind. In general, there is some material that is used to collect and focus energy from the Sun and use it to heat water.

3.1 Overview of Flat Plate Collectors

Topic last reviewed: 10 April Sectors: Downstream, Upstream. Solar thermal technology can be used in the oil and gas industry to generate process heat or steam. Solar energy collectors transfer the solar energy to a process fluid typically water, oil or air , which is used directly e. Several different technologies can be used to heat a working fluid by sunlight. Solar thermal energy collectors are distinguished by their operating temperature low, medium or high and by their motion non-concentrating or concentrating. Non-concentrating collectors also called stationary collectors are permanently fixed in place and do not track the sun.

Solar Water Heating Flat Plate Solar Collectors Description: A flat collector plate is a large, shallow box usually installed on the roof that heats the water using.

Flat Plate Collector

Manuscript received May 14, ; final manuscript received November 17, ; published online December 23, Editor: Werner Platzer. Sobhansarbandi, S. June 1, Energy Eng.

The flat-plate solar collectors are probably the most fundamental and most studied technology for solar-powered domestic hot water systems. The overall idea behind this technology is pretty simple. The Sun heats a dark flat surface, which collect as much energy as possible, and then the energy is transferred to water, air, or other fluid for further use.

3.1 Overview of Flat Plate Collectors

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Your email address will not be published. Website :. Save my name, email, and website in this browser for the next time I comment. Absorber area is small. Concentration ratio is 1. Concentration ratio is high.

However, for the non-concentrating solar collectors, such as evacuated tube and flat plate. collector, thermal efficiency of the collector.

Direct and Indirect Hot Water Systems

A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to a device for solar hot water heating , but may refer to large power generating installations such as solar parabolic troughs and solar towers or non water heating devices such as solar air heaters. Solar thermal collectors are either non-concentrating or concentrating. In non-concentrating collectors, the aperture area i. A common example of such a system is a metal plate that is painted a dark color to maximize the absorption of sunlight. The energy is then collected by cooling the plate with a working fluid , often water or glycol running in pipes attached to the plate.

Advances in Solar Energy pp Cite as. This chapter provides an introduction to concentrating solar collectors. The optical and thermal characteristics are described in relatively simple terms, and copious references to the more technical literature are given. A unified framework is used for analyzing the performance of all solar collector types; it involves optical efficiency, U-value, and heat transfer factor. Two measures of performance are of particular interest: the instantaneous efficiency under peak insolation which is easy to measure , and the annual energy delivered by the collector which is difficult to measure but is crucial for the economic evaluation. A simple but accurate graphical procedure is presented for obtaining the annual energy from the instantaneous efficiency curve. The chapter includes a discussion of practical aspects, covering choice of materials as well as problems of cleaning and tracking.

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