What are the antifreeze methods for plate heat exchangers?
If the plate heat exchanger is damaged due to the user's following reasons, the company and the contractor will not guarantee the warranty—
Non-warranty clause one
1.Each device has an antifreeze protection program. When the device is not used for a long time, if it is not powered off (start the antifreeze program), the loss will not be guaranteed;
Non-warranty clause two
2.Long-term unused or unexpected power outage for a long time, and failure to drain the water in the system in time, resulting in freezing and cracking of heat exchangers, built-in water pumps, pipelines, etc., are not warranted;
Non-warranty clause one
3.The outdoor pipes and water pumps are not well insulated (no insulation or insulation damage), and the water is not drained when they are not used for a long time, causing freezing and cracking, and the warranty is not provided.
The last thing to note is that these are not stipulated by any manufacturer or contractor, but the entire industry rules.
What are the antifreeze methods for plate heat exchangers?
Since we also use plate heat exchangers in winter, it is still necessary to understand the anti-freezing method of plate heat exchangers. On this day of cold wave, I will tell you about the anti-freezing of plate heat exchangers!
First of all, the reason why the internal temperature of the heat exchange equipment is below 0 degrees:
1.The water temperature becomes low, the refrigerant channel is blocked or the refrigerant distribution is uneven.
2.The flow channel is partially blocked or the water flow is small.
OK, now that we know the reason,
You will definitely know how to protect plate heat exchangers from freezing!
1. Heat insulation materials can be used for winding, especially the thick winding of the water supply facilities in the shade, including the inlet and outlet water pipes and valves of the water tank should be thickened.
2. For water meters installed outdoors or in wells, remove the accumulated water in the well, keep it in a dry state, and fill the edge of the water meter with sand.
3. Outdoor water pipes should also be wrapped with thermal insulation materials, and wrapped tightly, kept dry and not wet, and finally put a plastic bag for secondary protection.
4. If the water pipe has been frozen, you can open the valve, use a hot towel to keep it warm, and then slowly defrost it with warm water along the faucet toward the water pipe. Do not use tools to violently open the water pipe. If the warm water reaches the water meter and there is no running water, it means that the water meter is also frozen. Use the above method to thaw it, cover it with a hot towel and pour it with warm water.
5. Protective measures can be taken on the water side, and the water inlet pipe can be installed with a filter (1mm impurities can be filtered). Or install a temperature sensor at the water inlet and outlet, and set the temperature in the inlet and outlet pipes respectively. When the temperature is lower than the set value, the compressor stops.
6. The pressure difference sensor or flow switch can also be set in the inlet and outlet pipelines, and the machine will stop if it does not reach the set value.
7. At present, a new type of anti-freezing method is very useful, increasing the temperature of the plate heat exchanger medium, pre-heating the fresh air, usually using steam heating or electric heating. It is also possible to use the secondary energy utilization method to increase the temperature, which may cause frosting of the heat exchanger and thus ice blockage.
To dear customers and friends:
Another cold wave is coming. In order to prevent the ambient temperature from falling below 0 degrees, causing equipment failures caused by the freezing of the circulating water inside the heat exchanger, please be sure to follow the following methods
1. Before leaving get off work every day, the water system can be kept open if conditions permit to effectively prevent the circulating water from freezing at night;
2. Add antifreeze medium, and add proper amount of antifreeze according to the specific situation of the location.
If you choose the second option, adding antifreeze, please drain the antifreeze in the equipment immediately after the weather warms up, replace the filter element of the equipment, clean the water tank and filter screen of the equipment, and add a suitable water source again.
We hope that the reasonable and accurate use of heat exchanger products will bring you a better experience.
