agnisolar

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Working Principle Of Solar Water Heater
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What is a Solar Water Heater ? 

• Solar Water Heater is a device that helps in
  heating water by using the energy coming from the
  SUN.
• Solar energy is totally free. Solar energy (sun
  rays) is used for heating water at zero operating
  cost.
• In general solar water heater consists of a solar
  collector that is fixed on the roof  of
  a building and connected to a insulated
  water-storage tank

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Components Of Solar Water Heaters

• The solar water heaters are manufactured in
  different designs. All the designs have some
  common components as
• Supporting Stand
• Solar Collectors (Absorbs solar energy coming
  from the sun)
• Insulated Storage Tank (to effectively store hot
  water)
• Connecting Pipes and Instrumentation, etc.

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Working Principle Of Solar Water Heater
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• Working Principle Of Solar Water Heater Is Very
  Simple
• Device Has Insulated Collectors Which Absorb The
  Radiations Of Sun And Converts It Into Heat
  Energy.
• This Collected Energy Is Passed To A Water Tank
  With The Help Of Circulating Pumps.
• Thermal regulators handle this exchange very
  well.

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• As the collector is hotter than the water inside
  the tank exchange process begins.
• In this process, the hot water goes upwards
  because of its low density and due to gravity,
  the cold water with upper density moves down from
  the water tank.
• Solar collectors are arranged in a
  series-parallel arrangement.
• This combination helps to produce a huge quantity
  of hot water. Its efficiency is maximum during
  the summer season.

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• Solar water heating system works great in other
  seasons as well.
• When there is insufficient sunlight, the water in
  the storage tanks is pre-heated and then a backup
  system takes the water to the desired
  temperature.
• This working principle helps the solar water
  heater to work continuously and generates hot
  water throughout the year.

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Types of Solar Water Heaters

• Flat Plate Collector
• Evacuated Tube Collector

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Flat Plate Collector

• They are consist of a rectangular box that is
  insulated.
• This insulated box is covered by a glass.
• Just under the glass, there are a series of
  interconnected copper pipes from where hot water
  flows through.

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Evacuated Tube Collector

• Evacuated tube collectors consists of glass tubes
  
• These insulated glass tubes absorbs the solar
  radiations.
• The idea behind this type of solar hot water
  system is that vacuum is a good insulator.

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Conclusion

• Variety Of Configurations Is Available As Per
  Requirement
• Provide Solutions In Different Climates
• The Amount Of Heat Delivered By A Solar Water
  Heating System Is Completely Free
• Device Is Eco Friendly In Nature
• Requires Low Maintenance
• It Is Environment Friendly In Nature