Solar Energy

December 13, 2010

Pumping header systems, installation specifics in order.

Tags: , , , , , , , , , ,

While differing in the number of circulating circles, these systems are characterized by a number of common characteristics. Firstly, it’s total operating principle based on natural circulation. Another common characteristic between the direct and indirect solar systems with natural circulation is the use of an additional source of energy. In the form of electrical or other heater he installed in the battery container. When the intensity of solar radiation is insufficient to heat water in the tank to the desired values, such as prolonged or turning cloudy in winter, the heater turns on automatically and dozagryava water to the required temperature.

Collector connection

Collector connection to the pipe network is carried out under the scheme “as above, ie the heat enters the collector in the lower part and left him in the highest. When connecting several collectors to equalize their conditions of work are practiced parallel inclusion. When the number of collectors is large, assemblage and distribution networks run by the so-called. Tihelman directional scheme. This ensures uniform wrapping manifolds with fluid. For effective work of individual collectors is desirable temperature of the fluid passing through them to match the intensity of solar radiation that could be achieved by shifting them to batteries with different temperature levels.

In this paper we continue the current theme for the production of hot water with solar collector systems with forced circulation of the coolant.

Solar systems with natural circulation are relatively effective and inexpensive technical solution, but their smooth and effective functioning is related to compliance with several important conditions. To ensure good circulation of fluid is required the boiler to be installed above the collector and then as close to it. Also, when these systems are in danger of freezing water in the collector and tank. The problem is completely solved – in the collector loop circulating fluid that has a low freezing point. Indirect solar systems with natural circulation of the coolant solve some of the disadvantages of direct, but completely logical and are more expensive. Overall, the heat transfer in systems with natural circulation flow with low speed, which is crucial to limiting their effectiveness.

A key element in systems with forced, called and forced circulation of the coolant is pump. Is advisable to use more automation to monitor water temperature in the battery, which is because the system runs continuously, even in the absence of sunlight, for example at night or in cloudy weather. Therefore, instead of heat, water will cool the battery. It is to not allow this element of the system are sensors to monitor water temperature in the battery. Depending on the signal generated by them, the pump will turn on only when the water temperature in the battery is lower than the collector or depending on the desired temperature. Pump and additional automation, of course, expensive system. The larger number of elements of the systems with forced circulation determines in its complicated installation, setup and repair. But these systems are characterized by higher efficiency, allowing to reduce the collector area as the extraction of heat from the unit area is larger.

Unlike systems with natural circulation in the pump header systems, there is no requirement for installation of the battery court higher than the collector. The installation of the collector could be done on the roof. A battery can be mounted anywhere in the building.

A key element in systems with forced, called and forced circulation of the coolant is pump. Is advisable to use more automation to monitor water temperature in the battery, which is because the system runs continuously, even in the absence of sunlight, for example at night or in cloudy weather. Therefore, instead of heat, water will cool the battery. It is to not allow this element of the system are sensors to monitor water temperature in the battery. Depending on the signal generated by them, the pump will turn on only when the water temperature in the battery is lower than the collector or depending on the desired temperature. Pump and additional automation, of course, expensive system. The larger number of elements of the systems with forced circulation determines in its complicated installation, setup and repair. But these systems are characterized by higher efficiency, allowing to reduce the collector area as the extraction of heat from the unit area is larger.

Direct solar installations with forced circulation are effective but not suitable for geographic areas with hard water, and for applications in which water has a higher acidity. Their development is appropriate in areas with mild climates where temperatures rarely fall below zero degrees. It is recommended to ensure protection against freezing of water. Indirect solar systems with forced circulation are suitable for regions with long periods of subzero temperatures.

Some experts recommend that the battery has a capacity adequate to collect the required amount of hot water for several days. It is possible to use an additional energy source to compensate for the inability of the collectors to produce hot water at the required temperature for longer periods of unfavorable weather conditions. In the process of designing solar systems for year round use, necessarily relies on the battery with auxiliary heating, mostly electric. If the battery has two poles, may be incorporated into the boiler. Logically, the battery and pipes should be insulated to prevent heat loss.

In comparison, direct systems the risk of corrosion is much greater. In the design of solar systems to achieve high efficiency, ie reached the maximum utilization of solar energy collectors on should take account of complex factors. Among them, along with the type of solar installation and type of collectors are and how their assembly, including the location, orientation and angle of mounting of collectors.

Direct solar installations with forced circulation are effective but not suitable for geographic areas with hard water, and for applications in which water has a higher acidity. Their development is appropriate in areas with mild climates where temperatures rarely fall below zero degrees. It is recommended to ensure protection against freezing of water. Indirect solar systems with forced circulation are suitable for regions with long periods of subzero temperatures.

Collectors are part of the architecture of the building.

In comparison, direct systems the risk of corrosion is much greater. In the design of solar systems to achieve high efficiency, ie reached the maximum utilization of solar energy collectors on should take account of complex factors. Among them, along with the type of solar installation and type of collectors are and how their assembly, including the location, orientation and angle of mounting of collectors.

Collectors are part of the architecture of the building.

Logically, when the solar collector is mounted on a sloping roof, the slope of the collector the same as the roof. It should be borne in mind however, that the effective operation of the collector is directly related to the provision of appropriate slope of the collector. It is advisable to avoid mounting angles less than 20 degrees as the degree of contamination of the upper working surface of the collector is increased, resulting in system efficiency dramatically decreases.

Technical problem with this type of installation is to achieve good consolidation of the collector on the roof. In cases where the collectors are mounted on flat roof.

At worst, failing to comply with this condition is allowed to the collector is oriented to the southeast or southwest. The recommended slope of the collector should be in the range of 30 to 60 degrees as the optimum is considered the slope of 40-45 degrees. Manufacturers claim that in this orientation and inclination total nonstop energy transformation is maximum.

they are placed on a special bearing metal structure, usually made of steel profiles. On the supporting structure is mounted not only collectors, but also flowing. Advantages of this type of installation have the option of heaven collector orientation and tilt. A fault is considered not particularly aesthetic appearance of the collector field and the need for additional investment in thermal insulation and protect pipes from the weather.

Technical problem with this type of installation is to achieve good consolidation of the collector on the roof. In cases where the collectors are mounted on flat roof.

they are placed on a special bearing metal structure, usually made of steel profiles. On the supporting structure is mounted not only collectors, but also flowing. Advantages of this type of installation have the option of heaven collector orientation and tilt. A fault is considered not particularly aesthetic appearance of the collector field and the need for additional investment in thermal insulation and protect pipes from the weather.
Solar Panels,Make Money Online

Want to find out more about Solar Panels,Make Money Online, then visit Ilina Hadzhieva’s site on how to choose the best keyword #2 for your needs.

Leave a Reply

Your email address will not be published. Required fields are marked *