Tag Archives: chinese solar water heater

On the freezing measures

[REVIEW] northern s often such a failure occurs: in winter the temperature is low, the water heater back to the water frozen into ice, can not flow, causing water heater can not be used, the inconvenience to people\\ s lives. This paper on the causes and prevention of such failure to make a brief rule of measure.

    Northern Solar Water Heater often such a failure occurs: in winter the temperature is low, the water heater back to the water frozen into ice, can not flow, causing water heater can not be used, the inconvenience to people\\ s lives. This paper on the causes and prevention of such failure to make a brief rule of measure.
      
    First, the reasons for failure to form
    Failure to the environmental conditions: the northern region in winter, especially in cold areas, resettlement, water heater return pipe (the pipe) from the flue or through tube wells.

    Figure 1 shows a diagram of the formation of water heater failure, this failure is due to the formation of bends in installation pipe, some pipe against the wall, resulting in ice.
    Figure two reasons for failure analysis of the formation is as follows: In winter, the outdoor temperature is low, combined with adverse external wall insulation, wall, wall temperature is below 0 ?, water pipes near the wall, but also speed up the transfer of heat, so that the pipe temperature gradually decreased. Tube in the flow of water though the water temperature has dropped, but not frozen. Most water heater is not used at night, a long tube of water at rest, the water temperature gradually decreased, until the ice. When the full pipe cross-section of Icy and has a certain length, then the water blocked, water heaters will not be used.

    Second, the failure of several solutions
    1 Remove the water at one end, if we determine the approximate location of the ice, then remove from the ice closer to one end of the wire through the pipes, and gradually forced to make ice activities or broken, as long as there is very little flow through, which will be gradually melting ice, troubleshooting.
    Using this approach should be noted that the question is: not sharp wire ends, so as not to puncture the pipe; if the interior end of the pipe removed, once the troubleshooting, water heater in the water will quickly drain, causing water damage, to be prepared in advance; If you remove the outside end of the pipe, the water heater tank will quickly spilled outside, should also be wary.
    2 by the two ends of pipes stuck, hard shake and stretch, water in the ice due to broken or bent by the vibration of the pipe deformation by stretch straight ice broken, troubleshooting.
    If the pipe is longer, the success rate of this approach is not too high.
    3 to the tube-wells (flue) heating the air within the injection, usually from the lower part of the injection, the ice melted, troubleshooting.
    This approach requires a heating and air-injection device.
    4 block area to find water in the pipes to direct external heat to melt ice.
    This means that the equipment for water, if water through tube wells (flue) is difficult to implement, difficult to find the first positioning block area, the second is affected by tube-wells (flue) limit, unless the destruction of tube wells (flue .)

    Third, the preventive measures
    1 For new buildings, to consider increasing the wall insulation measures, in particular parts of the tube wells insulation measures, so that the temperature inside the tube-wells will not be too low.
    2 for the old building, installation of water heaters if the water in the distance is not long, you can use with the tropical over the whole line. Distance may not be suitable for use with tropical insulation of pipes, water pipes can be installed close inward, away from the wall, as far as possible through tube-wells, the water channel near the inward, away from outside walls, as far as possible through leaning against the wall of tube-well wall, this approach can often achieve the desired results.
    3 other ways: (1) heating pipe through tube-wells, tube wells to improve the temperature; (2) Open the water heater at night to put out a small amount of water taps, water pipes inside to avoid freezing. However, this approach is only temporary measures, not long-term use.