With the concept of energy conservation and environmental protection deeply rooted in people's hearts, people are more willing to choose to install solar water heaters, and now many people choose to start making solar water heaters themselves, so how to make solar water heaters ? The following decoration home decoration network Xiaobian will bring you a homemade solar water heater method, I hope to be helpful to everyone.

How to make a solar water heater?

Solar water heater system construction:

1. Collector: The heat collecting component in the system, whose function is equivalent to the electric heating pipe in the electric water heater. Unlike electric water heaters and gas water heaters, solar collectors use the radiant heat of the sun, so the heating time can only be in the daytime with the sun shining.

2 , insulation tank: and the same as the insulation tank of the electric water heater, is a container for storing hot water. Since solar water heaters can only work in daylight, people usually use hot water at night, so it is necessary to store the hot water produced by the collector in the daylight through the insulated water tank. The volume is the sum of the amount of hot water used every night. It adopts Tongle enamel inner pressure and heat preservation water tank, which has good heat preservation effect, corrosion resistance, clean water quality and long service life of more than 20 years.

3. Connecting pipes: the hot water is sent from the collector to the insulated water tank, and the cold water is sent from the insulated water tank to the channel of the collector, so that the whole system forms a closed loop. A well-designed, properly connected circulation line is critical to the ability of the solar system to reach optimal operating conditions. Hot water pipes must be insulated. The pipeline must be of high quality and guaranteed to have a service life of more than 20 years.

Homemade solar water heater method:

This installation uses the water inlet solenoid valve of the washing machine. The parameters are: water inlet G3 / 4 inches ( ie external thread of Dg20 ) , water outlet is Φ 10mm , working voltage is AC220V , working pressure is 0.02 ~ 0.08MPa . The price of the washing machine parts store is only about 15 yuan.

Although the water outlet of the solenoid valve is a straight threaded port of Φ 10mm , it can be directly connected with the aluminum-plastic pipe fitting of Dgl5 . Since the water outlet is a hard plastic pipe, when connecting with the aluminum-plastic pipe fittings of Dgl5 , one should apply a little smooth oil on the aluminum-plastic pipe fittings, and the other is to soak the water outlet of the solenoid valve in boiling water for two minutes, so that When connected.

Since this type of solenoid valve does not avoid the return water function, when the water pressure of the water outlet is greater than the water pressure of the water inlet (the tap water is stopped ) , the water will reverse the activity when the power is not applied, so it is necessary to use it in pairs. The water outlets of the two solenoid valves are docked, the inlets of the two solenoid valves, one for the water inlet and the other for the nozzle.

This installation only controls the solenoid valve of the water supply, and does not supply power to the check solenoid valve ( in the power-on state, the water flow cannot flow from the water outlet and then flows out from the water inlet ) . Another major component of this installation is the microcomputer time control switch. Selection KG - 316S microcomputer time control switch 16 which can be set on / off control of the different time each day, and the predetermined opening and closing the control loop in a week, also show a liquid crystal clock function, 12/24 Hourly conversion and other functions. The control switch has a built-in rechargeable Ni-MH battery as a backup power source. Under the condition of leaving the mains power supply, the data can be displayed and set for more than 6 months. After the automatic on/off program is programmed, the keyboard automatically enters the locked state, which can effectively prevent misoperation. The working principle is shown in the drawing.

When the preset water supply time ( normally set in the morning, the time is 1 minute ) comes, the microcomputer time control switch is turned on, and 220V AC power is outputted at the load output end . Time base IC NE555 delay circuit delays centered about 55 seconds, the delay time = 1.1 (R + W) C , Jl pull relay normally open contact J1 - 1 is closed, the power supply control circuit from entering The state of protection will not be de- energized due to the disconnection of the time control switch after 5 seconds; at the same time, J1 - 2 is closed, the solenoid valve of the water supply is electrically connected, and the water supply is replenished by the solar water heater; the transistor Q1 is triggered by the NE555 3 pin. When it is turned on, the buzzer will sound, prompting the automatic water supply to enter the working state.

When the solar water heater is full of water, the interelectrode resistance of the overflow detector is rapidly reduced, the transistor Q2 enters a saturated conduction state, the relay J2 is closed, and its normally closed contact is opened, and the power supply circuit of the delay circuit is cut off. Relay J1 is released and the automatic hydration process is completed.

After the whole circuit is assembled, the potentiometer w should be conditioned so that the delay time is about 55 seconds. It is definitely about 55 seconds. The time for the time control switch is as short as 60 seconds. In the full state of the solar water heater, if the solenoid valve is not turned on, the relay J1 may be repeated for 60 seconds. Turning on will have an adverse effect on the operational life of the installation. After the delay circuit is debugged, turn on the power again, make the circuit enter the state of automatic hydration ( solen valve on ) , then sprinkle some water on the overflow detector. If it can be automatically stopped, the installation can be connected to the solar water heater. Used.

The above is how to make a homemade solar water heater for you . The whole content of the self-made solar water heater method , I believe that everyone has a basic understanding of homemade solar water heaters after reading this article , if you want to know more about decoration consultation, please click to enter the decoration knowledge channel .

More related wonderful reading:

Can solar water heaters be used in winter? Solar winter use method

What are the functions of the solar water heater controller? how to use?

What are the advantages and disadvantages of split solar water heaters? Principle introduction

What is the principle of a pressurized solar water heater? easy to use?

What solar water heater is good? Solar water heaters

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