Tag Archive | "solar collectors"

Benefits Of A Large Solar Collector

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A solar collector is a device that is used to collect and transmit the heat of sun to the inner parts of the building. It does this by trapping the hot air of the sun. A few flaws in this system may be experienced if proper material has not been used for the collection of energy from sun.

Need For A Bigger Solar Collector

It is better to have a bigger solar collector. A few of the reasons requiring the bigger size are explained below:-

1. Adequate Insulation

There is a high heat loss in most of the outbuildings. The reason behind this loss is the high infiltration rate. Lack of adequate insulation is also one of the causes of heat loss. If the heat is generated by a large collector, it would be good use.

2. Overheating

If there is a big collector it would be of great use and overheating would not remain a problem. The design of the roof can be modified to integrate the thermal mass with the collector exits. In addition, the upper vents can be blocked off. This would help in reducing the indoor temperature swings during the night time.

3. Cloud Cover

A big collector compensates for the lesser amount of sun light received in overcast conditions.

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Collecting Energy Of The Sun

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Electricity has become one of the basic needs of mankind. A wide range of methods are being used to produce electricity. These methods include hydal, thermal, wind and atomic energy. All of hese procedures require a substantial infrastructure for setting up the production facility. However, the solar energy has become the most promising source that does not need any complex constructions for establishing a power house.

Solar Collectors

Solar Collectors

Solar collectors are the devices that convert the sunlight into the electricity. These are composed of the arrays of photovoltaic cells and commonly known as solar panels. They come in wide range of sizes and configurations and one can choose one of his own as per the usage.

Characteristics Of Solar Collectors

A lot of work is been done in the field of solar energy. The solar energy is collected by using the solar equipment commonly called as the collectors. Few of the characteristics of solar collectors are discussed below:-

Simple Way To Produce Electricity

Solar energy is a simple way to provide electricity to your home. Using a solar collector is rather easy. There is slight or even no protection necessary.

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Types And Advantages Of Solar Heating Systems

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Now you can power your house with green energy. It may sound expensive or difficult to convert normal home into sun-inspired home. But in fact, it is fairly simple and economical. These have countless benefits. Being environment-friendly, these are safer and not harmful for the atmosphere around.

Two methods of solar heating are “active” and “passive”.

Active solar heating

Specific equipment is required for active solar heating. Pumps and fans are needed to move or direct sun heat. There are two further classifications in it, which are air-based and liquid systems.

1.Air-based solar heating

In air-based solar heating systems, collectors are used. These trap air which absorbs and transfers heat from the sun. Air-based system can work on lower efficiency than liquid ones. Why is that so? The reason is that air cannot transfer heat efficiently like water can do.

Advantages of air-based solar heating

There is an advantage of air-based solar heating that these systems can warm up room directly. These can also function early in the morning and late in the day. Moreover, these are easy to build and install. These can be fixed outside so that more than one room in a house can be heated.

Air-based connectors are mostly installed on window frames, roofs and walls.

2.Liquid-based active solar heating

Liquid solar collectors are used in liquid-based systems. These trap and move heat. Most common are flat-plate collectors. A fluid, like water or antifreeze is filled. This liquid absorbs heat. This heated fluid is then transferred to heat exchanger or storage tank through mechanical collector such as pump.

Important considerations

While installing solar heating system, consider these important things first:

  • Its cost is affordable
  • Size is suitable to your particular needs
  • It is durable and long-lasting
  • Tank placement is absolutely accurate

When entire mechanism is properly installed, solar heat can be distributed with a central-forced air system, a radiant floor, and a baseboard or hot water radiator.

Passive solar heating

Another type is Passive solar heating system. It works by storing solar energy. It does not require any electrical or mechanical devices.

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Solar Devices Used Around and In the Residential Places

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These days the solar technology widely spreading and more people are converting their home applications to the solar energy. There are a number of indoor and outdoor lights that work on the solar energy, and this energy is also used in cooling and heating the living space.

Thermal Expansion Tanks

Thermal Expansion Tanks

Expansion tanks are considered as a necessary part of the closed-loop solar water heating system. In this system water does not enters the solar collector. a mixture of water and glycol is used as heat flow/transfer fluid. During the operation the fluid is heated up by solar energy in the solar collector. When the fluid travels to the water tank that is mostly inside home there the heat exchange takes place. When the glycol is heat up it expands therefore, expansion tank is required.

Thermal actuator Functions

The main function of the thermal actuator is to prevent the freezing of the water inside the solar collectors or pipes. The actuator also act as tacking system for helping the collector to exactly position itself in the direction of the sun and resets at night so that collector can start functioning in morning. Actuator can be driven thermally or electrically.

Thermal pumps

Thermal pumps are used as an alternative of the energy systems to cool or heat the living space. These pumps draw heat from earth, underground water and from many other sources. The pump uses the temperature of the earth 6 to 12 feet below the surface to preheat or cool the indoor air.

Solar lanterns

Before the invention of the electricity lanterns were used for lighting. Now when you go for camping or a place where electricity is not available lantern are required there. Read the full story

Flat Plate Solar Energy Collectors

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Solar energy is the most useful source of fuel that is available all over the world for no cost. You are not required to pay a single dime for getting sunlight. Conversion of solar energy to other forms of energy makes it possible to get incredible applications without offering any threat to the environment.

Solar collectors

Solar collectors

If you are thinking about getting a sole energy system for your house, you must keep in mind that solar collectors are the most vital part of the design. The main function of the solar collectors is to collect the solar energy or heat, which is then converted into electrical energy mostly and stored in battery. Flat plate solar collectors are gaining popularity with the passage of time.

Applications and installing of solar collectors

You are most likely to be looking for more information about the flat polar solar collectors. The major applications of these sorts of collectors include water heating, pool heating, and space heating. The common place of installment for flat plate solar collectors is the roof of the building containing solar energy systems. The flat collectors are suitable for collecting heat at temperature less than 180 degree Fahrenheit.

Basic types of solar collectors

Basically there are three types of solar collectors that are named evacuated tube collectors, flat plate solar collectors, and integral collector storage systems. Read the full story

Flat-Plate Solar Collectors

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Initiation of every solar thermal heating process takes place with thermal collectors. These collectors are used to trap the solar radiations and draw heat from these radiations. These radiations pass through the liquid or air enclosed in the tube. These tube transfers the solar-heated to the system installed in the house.

Circulation systems in the collectors

Circulation systems in the collectors

There are two heat circulation systems open and closed loop system. In the open loop system the indoor air is heated by directly passing it through the thermal collector and in the closed loop system the heat exchanger transfers its heat to the inner parts of the home.  Flat-plate collectors are most commonly type of collectors used these days. These collectors are either liquid or air-based. Evacuated tube collectors can provide the most efficient of gathering solar heat. Flat-plate collectors are inexpensive and are mostly used at residential place or in any small scale application.

Flat plate Liquid Solar Collectors

Flat-plate collectors consist of metal box that is insulated and covered by a gazing. Read the full story

Solar Desiccant System – New Addition to the Cooling Systems

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Solar desiccant system works on the solar energy this system is a thermally activated cooling system; it absorbs the solar heat for separation and evaporation of the refrigerant fluid. The desiccant system uses solar-heated air to reproduce desiccants that helps in driving off the warm water in air. The cooled air produced is through different evaporative stages and then finally transferred to different parts of the home.

Solar desiccant an expensive system

Solar desiccant an expensive system

It is not necessary that desiccant system will cool and remove the humidity from the air. Use of the desiccant systems is not very common. The main reason of less use of these systems is that they are more expensive and they work in combination of the heat-driven and natural gas cooling systems.

Working

Solar cooling system operating on the desiccant system can work better in low temperature place than the solar absorption systems. Solar desiccant systems work on the solar thermal energy that is obtained from the rooftop solar collectors. Read the full story

Air and Liquid-Based Active Solar Heating

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There are mainly two ways of solar heating, those are active and passive. In passive solar heating process there is no electrical or mechanical device to gather the solar heat. This whole process is done by using the structure and design of the buildings, and is considered advantageous due to low maintenance and operational coast. While in active solar heating pumps and fans are required to direct and move solar heat. Active solar heating is further classified into air-based and liquid- based systems.

Liquid-based active solar heating

Liquid-based active solar heating

To trap the solar heat and in moving it liquid-based solar systems use liquid solar collectors. These collectors are filled with the fluids; the fluids are used on their capability of absorbing solar heat. These fluids can be water or any antifreeze agent. Flat-plate collector is among the most common collectors which are being used.

Working and installation of liquid-based solar systems

Mechanical collectors are also used; pump is a common mechanical collector it is used in transferring the heated liquid into heat exchanger or storage tank. If you are planning to install this system you have to decide about the size, coast, placement and durability of the storage tank. The distribution of the solar heat can be done by central forced air system or using various type of devices.

Air-based active solar heating

Air-based solar heating system uses air instead of water for transferring solar heat. The operations of the air collector are less efficient than the liquid collector. The main reason for lesser efficiency is that air does not transfer heat efficiently than as liquid. Read the full story

Solar Collectors – Evacuated Tube Collectors

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Solar collectors are the important component of solar water heaters. There are basically three distinct types of solar water collectors that are used in solar water heaters. These types include flat-plate, integral collector storage, and evacuated tube collectors.

Comparison of Evacuated Tube with Other Collectors

Comparison of Evacuated Tube with Other Collectors

These collectors are less cost-effective collectors than that of flat-plate collectors, as they cost twice the overall cost of the flat-plate collectors. These collectors reach the highest temperatures that are 170 to 350 degrees Fahrenheit. Flat plate collectors are not capable of heating water or air above the temperature 180 degrees Fahrenheit. The integral storage collectors utilize passive water heating techniques in only those locations where temperature of the exterior environment never reaches the freezing point.

Types of Evacuated Tube Collectors

Basically there are two main types of evacuated tube collectors. Read the full story

A Guide to Solar Pool Heaters

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Solar pool heaters are probably the most cost-effective products that run on solar energy and provide safe and clean power.  Solar pool heaters are highly cost-effective because they don’t cost anything for functioning. They work on a very simple principal. Following are the important facts about solar pool heaters.

Solar Pool Heaters are Cost-Effective

Solar Pool Heaters are Cost-Effective

The only expense that is required to use to solar pool heaters is applied at the time of the installation. Solar pool heaters cost you only the initial cost of these heaters. After that it doesn’t cost you anything to run and operate solar pool heaters because these heaters run solely on sun energy that is free.

Working of Solar Pool Heaters

The solar pool heaters work on a very simple principal. After that is stored in a collector is heated by the sunlight. This heated water is pumped back into the pool and increases the overall temperature of pool.

Solar pool heaters work only in the presence of day light, so it means that they will also work during cloudy days. But in the presence of direct sunlight, solar pool heaters are stronger and more effective. If you are living in an area where most of the time days remain gloomy then you need to install additional solar panels. It is important to increase the strength of solar pool heaters. Read the full story

Solar Heat for Solar Oven

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Solar power is of great use and helping human life a lot in various ways without charging a dime. There is no expensive equipment is required for utilizing solar power. One of these uses of solar power includes cooking oven. You can use solar power to empower your cooking and can make it safer and cleaner.

Cost of Solar Ovens

Cost of Solar Ovens

There is a great variety of solar ovens available at marketplace at different cost. The costs of solar ovens range from $32 to $260. Also, you can build solar ovens at your home just by little knowledge.

Components of Solar Ovens

Solar ovens usually comprise of dark colored pots that are tailored in a way so they can absorb sunlight. These pots are fitted closely with tight lids that contain moisture. The pots are enclosed within a box, inverted glass bowl or plastic bags that are heat resistant. Each of these plastic bags works like glazing solar collectors and enable these collectors to collect heat and prevent that heat from escape. Read the full story