The working principle of solar collector:
1. The heat pipe series solar collector are always connected with existing heating supply device.

2. The selective coating on the inner Cover of the evacuated tubes converts solar energy into heat energy and transfers heat to the heat pipes by aluminium fins.

3. The liquid in the heat pipe changes into vapour which rises to the condenser.

4. The heat then passes through the heat exchanger and the vapour becomes liquid, returning to the base of the heat pipe.

5. The heat conducts to the heat transfer liquid (anti-freezing liquid or water) via a copper pipe.

6. This transference of heat into the liquid creates a continuous circulation as long as the collector is heated by the sun.

Shandong Zentek Energy and Power Co., Ltd. is a professional solar energy product supplier integrating the research, manufacture and marketing. Our company is offering all kinds of solar products, covering solar water heater accessories and solar PVs. As a manufacturer and an OEM factory in China, we offer "one-stop" services when supplying you solar water heaters and solar modules.

In recent years, our products have been well received by customers and won a high reputation worldwide. With a focus on the continual improvement of products, management and service, our company are strongly committed to our unique mission of providing effective solutions for friends all over the world.

FAQ:

-Can you provide FREE SAMPLES?

Suggest pay samples and we cut off the cost in our next container order.

We do not suggest samples sending, because samples may broken on the transport way.

-Can you accept OED/OEM?

Your company logo or other logos could be print on tubes and carton box.

-What is your GUARANTEE TIME?

 5 years, tube life more than 15 years

-What is your PAYMENT TERM?

T/T:30% in advance, 70% balance before shippment or get the scan of BL

-Do you have other ADDITIONAL SERVICE?

YES.

We could offer other accessories used on solar water heater system and the price will be much competitive.