Nanjing Chang'an 2017 Nanjing Changan Conveyor System Equipment Maintenance Project Tender Announcement

Under the commission of Nanjing Changan Automobile Co., Ltd., an open tender was held for the 2017 Nanjing Changan Conveyor System Equipment Maintenance Project. Competent manufacturers are welcome to bid.

1. Bidding Document No.: 0675-160JOC005236 Tender Form: Post-qualification for Public Bidding
2. Bidding content and requirements: 2017 Nanjing Changan conveyor system equipment maintenance and preservation
See tender documents for details.
3. Bidder qualification requirements:
3.1. The bidder must have more than 2 years of push-pull accumulation chain and push-put accumulation chain retention performance and security experience in the automotive industry. (The contract is signed before January 1, 2014. A copy of the contract must be provided. The original is brought to the bid opening site. for future reference).
3.2. The maintenance technicians must have at least one electrical and mechanical engineer with the nationally recognized engineer's professional title (the original certificate is for future reference).
4. The selling price of the bidding documents (RMB): 800 yuan/set; the post-sale service will not be refunded; domestic mail-order purchases will be subject to an additional RMB 50.
5. Time of purchase of tender documents: from now until January 4, 2017, every day (excluding holidays) 9:00—11:30, 14:00—17:00 (Beijing time, the same below)

Heat Pipe Solar Collector

heat pipe Solar Collector is one type of vacuum tube solar collector.


The selective coating on the inner cover of the Vacuum Tubes converts solar energy and transfers heat to the heat pipes by aluminum fins. The liquid in the heat pipe changes into vapor which rises to the condenser. Then the heat passes through the heat exchanger, the water inside of header pipe is being heated, and the vapor becomes liquid, returning to the bottom of the heat pipe. This transference of heat creates a continuous circulation as long as the heat pipe vacuum tube collector is heated by sun.

Heat is transferred by liquid to the header pipe and heat the water efficiently. In addition, heat pipe vacuum tubes is highly freezing resistance, which ensures higher efficiency in cold areas.

Heat pipe solar collectors can be used in both pressurized or non-pressurized circulation systems.

Evacuated heat pipe technology

1. Evacuated tubes based on the thermos flask principle and consisting of two concentric glass tubes and an evacuated gap to prevent heat loss.
2. Highly selective absorber layer on the inner glass tubes (AI/ALN,) which enables an optimum energy yield.
3. Aluminum heat transfer plate to provide an optimum heat transfer medium system.
4. Copper heat pipes transfer the extracting heat effectively.
5. Rock wool insulation with an aluminum lamination in order to prevent heat loss in the manifold.
6. Compression ring fitting (Ø 22 mm) for flow and return which enable a safe and easy-to-install pipework connections.
7. The most common working fluid is water for ambient temperatures of - 30 °C to an operating temperature to 90 °C.


Heat Pipe Solar Collector,Pressurized Solar Collector,Heat Tube Solar Collector,Heat Pipe Collector

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