FAQs
Q What is a Solar Hot Water System?
A A system which turns cold water into hot water with the help of heat contained in the Sun's rays is called a solar water heating systems (SHWS)
Q What is possible max. temperature of water that can be attained in the solar water heating system?
A Around 60o to 75o C. The rise in temperature depends on Solar Radiation Weather Conditions Solar collector system efficiency
Q Can it be installed anywhere?
A Yes, it can be installed on Rooftops, Building terrace, Open ground .There should be : - No shading, - South orientation of the collectors, - Collector Tilt = Latitude or + 10o thereof , - Over head tank with its bottom water outlet at least 8" above the hot water tank of a solar water heating system.
Q Does it generate hot water on all days and in all seasons of the year?
A It generates hot water on : -Clear sunny day (Max.), - Partially cloudy day: Moderate,- Rainy or heavily overcast day -Nil, - Average 300 days in a year (330 days in Gujarat & Rajasthan)
Q Can we use any type of water such as municipality treated water, bore well water or tank water?
A Only soft and potable water recommended - Hard water can reduce efficiency over time & damages collectors
Q What should be the type of material to be used for hot storage tanks?
A Stainless Steel or copper for small tanks, Mild steel tank with anti-corrosive coating inside for large tanks.
Q What about pipelines?
A Galvanized steel pipes of class B or C are normally used. Copper pipes can also be used. Heat resistant plastic piping, if available, can also be used.
Q Are there different types of collectors? If so, how to select the best one?
A Yes, the best collectors are those with high quality material for long life, say 20-25 years,(check out our page on Solar Water Heaters) good workmanship to make collector water-proof and dust-proof, high efficiency
Q How much money do we have to spend for maintenance?
A Maintenance is minimal : Periodic glass cleaning, -Check for leakages and valve functioning.
