Flat solar water heater collector

Abstract

Two sheets of polymer are sealed (S) and produce some dams (Ch 1, Ch 2, Ch 3 , . . . ) behind which water is trapped. These dams (Ch 1, Ch 2, Ch 3 , . . . ) trap some water around 3-5 liter water per 1 square meter of collector. Water remains behind these dams (Ch 1, Ch 2, Ch 3 , . . . ) till its temperature raises. Hot water goes out and cold water is replaced. The temperature of water is controlled by a thermostat (W) which its sensor (T) is located under the collector ( FIG. 2 ) exactly under the dams { Ch (n−1) } where the water is trapped.

1 . A flat solar water heater comprising a collector placed in a panel; wherein said panel comprises heat insulation located around and on back of said collector; an aluminum frame surrounds said panel and back of said panel is closed by a metal sheet wherein a glass is placed in front of said panel; said collector comprises a water inlet and a water outlet; wherein said water inlet is located at a distal end of said collector and said water outlet is located a formal end; a sensor of thermostat is located inside said collector measuring temperature of water trapped inside said collector and sending data to a thermostat; wherein said thermostat operates a water faucet to transport heated water or cold water as needed. 
     
     
         2 . The solar water heater of  claim 1 , further comprising at least two sheets of polymer, covered in aluminum foil; wherein said aluminum foil is covered in a black dye, converting solar energy to heat; wherein said panel is covered by glass, letting sunshine through. 
     
     
         3 . The flat solar water heater of  claim 2 , wherein said two sheets of polymer are sealed, and creating many dams for trapping water in between. 
     
     
         4 . The solar water heater of  claim 3 , wherein said sensor of thermostat is placed under said panel between said collector and said insulation; exactly under one before last of said may dams where water is trapped. 
     
     
         5 . The flat solar water heater of  claim 4 , wherein said dams are parallel and are connected with each other through an opening; wherein said opening allows water to move from one of said many dams to another one of said many dams when level of said water trapped behind each of one of said many dams overflows a wall of said opening. 
     
     
         6 . The flat solar water heater of  claim 5 , wherein said inlet is located at a first dam and said water outlet is located at an end of a last dam. 
     
     
         7 . The flat solar water heater of  claim 6 , wherein said two sheets of polymer are parallel to each other and said seal connects said two sheets of polymer perpendicularly and wherein said black dye covers a distal side of said aluminum foil wherein said aluminum foil is placed on distal end of one of said polymer sheets placed distally in with regards to another one of said polymer sheet and wherein said aluminum foil transfers heat to said polymer sheets and said water. 
     
     
         8 . The flat solar water heater of  claim 7 , wherein said panel is light weight using polystyrene foam for insulation; wherein said polystyrene foam increases durability of said panel and reduces temperature inside said panel; wherein said thermostat regulates said temperature inside said panel. 
     
     
         9 . The flat solar water heater of  claim 8  wherein said collector is very cheap and very simple to produce and does not corrode with water. 
     
     
         10 . The flat solar water heater of  claim 9 , wherein said collector is rolled due to its elasticity and comprises a very long length. 
     
     
         11 . The flat solar water heater of  claim 9 , wherein said temperature of said water increases between layers of said polymer; and wherein said water freezes inside said collector without damaging it; solar energy will defrost ice inside said collector and increase said temperature next day. 
     
     
         12 . The flat solar water heater of  claim 11 ; wherein said water moves to adjacent dams respectively by force of gravity and no motor is needed for circulation of said water and therefore said flat solar water heater's electricity consumption is very minimum. 
     
     
         13 . The flat solar water heater of  claim 12 ; wherein when electricity is disconnected and cut from said collector, said trapped water behind each one of said many dams starts to boil and creates steam; however said water inlet and said water outlet are open and therefore steam does not damage said collector exiting said water inlet and water outlet. 
     
     
         14 . The flat solar water heater of  claim 13  wherein said collector does need a safety valve; and a temperature of said collector does not rise more than 100° Celsius till said trapped water completely exits said many dams. 
     
     
         15 . The flat solar water heater of  claim 14  wherein said sensor of thermostat opens up said faucet and therefore cold water enters inside said collector; said cold water is trapped behind said first dam and therefore pushes up said water that was originally trapped and heated behind said first dam; said cold water moves said water into one of said many dams adjacent to said first dam;
 until said water is moved to said last dam and exits through said outlet. 
 
     
     
         16 . The flat solar water heater of  claim 15 , wherein said cold water reaches said sensor of thermostat; said thermostat closes said faucet and therefore said cold water will be trapped inside said collector till it is heated. 
     
     
         17 . The flat solar water heater of  claim 16 , wherein a polymer pipe supplies said cold water to said collector and wherein said pipe is connected to said faucet on a formal end; and on a distal end it is connected to said water inlet. 
     
     
         18 . The flat solar water heater of  claim 17 , wherein said temperature is preferably regulated at 65° Celsius in winter and 55° Celsius in summer, but can be adjusted for any degrees Below 100° Celsius. 
     
     
         19 . The flat solar water heater of  claim 18 , wherein said thermostat closes said faucet during night and cloudy sky. 
     
     
         20 . The flat solar water heater of  claim 19 , wherein said water outlet is connected to a funnel-shaped insulated pipe wherein said heated water is transferred into an insulated polymer tank.