Type Of Solar Collectors Essay

831 words - 3 pages

Classification of solar collectors
⦁ The classification is based on the way they collect solar radiation. The non-concentrating type absorbs the radiation as it is received on the surface of the collector while the concentrating type first increases the concentration of radiation per unit area before absorbing it.
⦁ Further, based on the technique employed for concentration of radiation, the concentrating type is further categorized into focus and non-focus types. The focus type is further subdivided into line and point focus depending on the focusing method.
⦁ While non-focus type collectors consume both beam and diffuse radiation, the focus type collectors make use of beam radiation only, as diffuse radiation cannot be concentrated.
⦁ The important features of a solar collector are:
⦁ Collector efficiency: It is defined as the ratio of the energy actually absorbed by the collector to the energy incident on the collector.
⦁ Concentration ratio (CR): It is the ratio of the area of the aperture of the system to the area of the receiver. The aperture of the system is the projected area of the collector facing the beam.
⦁ Temperature range: It is the range of temperature to which the heat transport fluid is heated by the collector.
⦁ Non-concentrating collector or flat plate collector
⦁ In it, the area of a collector to catch the solar radiation is equal to the absorber plate. Here no optical system is used to reduce the solar radiation and therefore the concentration ratio is just 1.
⦁ Flat plate collector is the most substantial component of any solar thermal energy system. It is basically a heat exchanger which transfers the radiant energy of the incident sunlight to the sensible heat of a working fluid-liquid or air.
⦁ Flat plate collectors are designed for operation in the low temperature range, from ambient to 60˚C, or the medium temperature range, from ambient to 100˚C.
⦁ The constructional details of a simple flat plate collector are shown in Fig. 1.2.

Construction of flat plate collector
Basic elements of a flat plate collector:
⦁ Transparent cover (one or two sheets) of glass or radiation transmitting plastic film.
⦁ Blackened absorber plate usually of copper, aluminium or steel, typically 1-2mm thick.
⦁ Tubes (typically 1-2 cm DIA.), passages or channels, in thermal contact with the absorber plate or connected to it.
⦁ Thermal insulation usually of fiberglass or expended polystyrene, typically 5-10cm in thickness is provided at the back and sides to minimize the heat losses.
⦁ Tight container or casing to insert the above ingredients.
Working of flat plate collector:
⦁ As solar radiation impinges on specially treated metallic absorber plate, it is absorbed and increases its temperature. This heat is transferred to a heat transfer fluid circulating in the tube below the absorber plate and in intimate...

Find Another Essay On Type of Solar Collectors

Solar Heating Essay

748 words - 3 pages Solar Heating It seems self-evident that, as a global society, we must transition eventually from the nonrenewable fossil fuels we currently rely on to renewable sources of energy such as biomass, wind, and particularly solar energy. The latter, though it involves some difficulties, which we will discuss shortly, is especially attractive, I think, because its source is the energy provided by the sun, which is so vast that,...

The Cost-Benefit Analysis of Solar Energy

3649 words - 15 pages In recent decades, much debate has ensued about the vast amount of natural resources and ecological services society depletes. Moreover, the debate has evaluated how society depletes these natural resources at a faster rate than the environment can replenish. It also assesses how society can mitigate these environmental issues in order to preserve our natural resources for the prosperity of future generations. Research suggests that the natural...

Solar Energy

2288 words - 9 pages Someday, our energy sources are going to run out. What will we do? What can we do? Our major source of energy now is fossil fuel. If that were to run out, there must be an alternate way to get energy. Because of this problem, there has been a lot of research going on. Through that research, alternate ways to get energy have been developed. They include wind energy, solar energy, nuclear energy, tidal energy and many more. In this paper I...

History of Solar Energy

5796 words - 23 pages History of Solar Energy Many of us assume that the nation's first serious push to develop renewable fuels was spawned while angry Americans waited in gas lines during the "energy crisis" of the 1970s. Held hostage by the OPEC oil embargo, the country suddenly seemed receptive to warnings from scientists, environmentalists, and even a few politicians to end its over-reliance on finite coal and oil reserves or face severe economic distress and...

Solar Energy

731 words - 3 pages Have you ever glanced up at the sun and wondered what it is capable of doing? The sun is a very powerful resource, and is capable of doing a variety of things. One of the sun’s many capabilities is producing energy. This energy is called solar energy, which is the energy I have chosen to research. As you will read later on, solar energy can be very useful. Some of the first people to discover solar energy were the Greek and Romans. They built...

Alternative Energy: Solar and Wind

2284 words - 9 pages AbstractThe ever growing amount of pollution in our air, land, and seas caused by fossil fuel burning power plants makes it blatantly clear that alternative forms of energy need to be implemented. While carbon dioxide levels continue to rise, man has been eradicating forests that purify our air. For more than 20 years, the technology to produce clean electricity with little or no harmful byproducts has been available, but not mass implemented....

Which Is The Best Alternative Energy For Cleaning Up Pollution?

1082 words - 4 pages Which Is The Best Alternative Energy For Cleaning Up Pollution? Pollution around the word in these few years has become more serious and critical. Different personal and commercial activities like driving, cooking, watching TV, mining, forestry and manufacturing have severely damaged the ecosystem and environment has. There are different types of pollution happening on earth. They include air pollution, light pollution, noise pollution and water...

Renewable Energy (Solar and Hydro) Research Assignment

2624 words - 10 pages -Research 2 different types of renewable energy sources and list: where and when they have been used, how they produce electricity, facts and stats, environmental impact, advantages and disadvantages.Solar and hydro power are advantageous, easy to acquire and eco-friendly sources of power. They are two excellent forms of renewable energy. A great advantage of these sources is that their energy does not need to be generated on a large...

The Energy Crisis

1073 words - 4 pages 41The Energy CrisisThe ability to function or work is generally defined as energy. Energy is required in every spare of humans' life. It is required from homes to industries. It can be found in different forms such as light, heat, sound and so on. Energy crisis is the scarcity of electricity, which is mainly caused by rising prices, worldwide demand and lack of supplies. The traditional sources...

Energy and Environment

1052 words - 4 pages Imagine a life without lights, televisions, computers, trains, washing machine, refrigerators and microwaves. Imagine a planet so polluted that smog is in the air so bad that one cannot see very far, lakes and streams are poisoned, and land so badly scarred from people trying to find more energy sources. This may become reality in nearly future as a result of abuse of our energy resources. That reveals that energy is most important in our life,...

Exploring the Potential of Solar Power

3451 words - 14 pages Introduction and History Solar power is a promising renewable energy source that poses a fair amount of challenges in its implementation. A major challenge towards future, widespread implementation of solar power is solar power’s intermittency. Solar power does not provide energy as regularly and as steadily as nonrenewable energy resources, a hindrance in more widespread adoption and implementation of solar power. Securing energy for America’s...

Similar Essays

Solar Energy Essay

1511 words - 6 pages Solar energy can be used in different ways during the construction of houses in order to conserve energy. Solar energy comes as a gift of nature and this makes it even more economical to use in our buildings. It is not only free but unlike other sources of energy; it also limits the amount of pollution caused to the environment. When building our houses the goal according to David Johnston and Scott Gibson is to create a house that consumes at...

Energy Self Sufficiency In Building Through Photovoltaic Cells

2840 words - 11 pages Energy Self-Sufficiency in Building through Photovoltaic Cells ABSTRACT Solar energy is a way to acquire self-sufficiency of many residential buildings. The different forms of solar cells made from different materials and in different ways are able to increase the efficiency of the solar cells and allow solar energy to become more widespread. Due to the possibility of a shortage of fossil fuels in the near future, solar power can serve...

Solar Power Essay

1349 words - 5 pages Solar Power: An Alternative Energy Source Since first discovered in the 1860s, the concept of storing energy from the sun to use as a source of power has been studied and pursued by many programs. Either using solar collectors or photovoltaic cells, the methods of using solar power are becoming more efficient and cost-effective. Solar technology is currently being used by homes and businesses, but is still too expensive and risky for many...

Renewable Energy Essay

870 words - 3 pages Renewable energy is a term used to describe a source of energy that has the capability to refill itself. Renewable energy is sometimes called infinite energy. Renewable energy is also known as green or clean energy, because it does not produce toxins or pollutants that are harmful and dangerous to the environment. Planet earth is going on a critical phase, due to the fossil fuels being consumed worldwide every day. Jimmy Carter once stated on a...