Need heat preservation for precision air conditioner cooling pipes

Need heat preservation for precision air conditioner cooling pipes

Whether the cooling water pipes of precision air conditioners should be insulated depends on specific conditions. Under normal circumstances, it is not insulated, but if there is no drainage in the indirect operation in winter, the outdoor or non-heated rooms that may freeze should be considered. In addition, if the relative humidity is high, such as the cleaning room, etc., the installation also needs to be insulated. .

Cooling water is used to dissipate heat. In principle, heat preservation is not required. However, for winter operation, heat preservation is required for antifreeze and electric heating is required. In summer, geographical and climatic factors should be considered. If the geographical location is the outdoor air temperature in summer If the temperature of the cooling water in the pipeline is higher than the temperature of the cooling water in the pipeline, in principle, heat insulation is also required without considering the factors of the project cost. The above two cases are for outdoor pipelines (the roof pipeline is mostly, and the metal protective shell is generally used after insulation. ), if other places are kept warm, they will be full.

　　 mainly depends on whether it is necessary to keep warm in several aspects.

　　 1. The key is to see whether the cooling water system is running in winter. Basically, it does not need heat preservation if it is not running, and it needs heat preservation when it is running.

　　 2. In the area where the project is located, the southern part basically does not need heat preservation.

　　 3. Of course, it depends on whether the water pipe is under the sun.

　　In actual use, it is indeed rare to see heat preservation-so theoretical analysis should be more acceptable.

1. Under normal circumstances, the design temperature of the circulating water of the cooling water pipe is 32～37℃. When the air conditioner is running in summer, the outdoor roof temperature is all >37℃. The cooling circulating water is a heat absorption process in the roof section, which undoubtedly reduces the cooling tower The cooling efficiency also reduces the refrigeration efficiency of the refrigeration unit. That is to say, when the refrigeration unit needs to provide the same cooling capacity, it is necessary to increase the power consumption (energy conservation) to remove the heat absorbed by the cooling circulating water, so theoretically roof cooling The heat preservation of the tower cooling water pipe is beneficial and necessary.

2. The use of cooling towers in winter is widely used in industrial applications. In general, the temperature of the cooling circulating water is> the temperature of the outdoor roof, that is to say, the cooling circulating water can dissipate heat to the outside, which can be seen from the analysis in "1" This is conducive to the improvement of the overall efficiency of the system (it will undoubtedly reduce the burden on the system). According to this theoretical analysis, the cooling water pipes of industrial roof cooling towers can be considered not to be insulated; of course, in the northern winter, if it needs to be operated in winter, the cooling water pipes Heat preservation should be considered. After all, the heat dissipation of the outdoor cooling circulating water is limited, and heat preservation and antifreeze are the first thing at this time.

3. In summary, from the perspective of long-term economic benefits: after all, the insulation length of the cooling water pipes in the roof section is very limited. In contrast, in theory, the insulation of the cooling water pipes of the roof cooling tower for air conditioning is beneficial and necessary; industrial cooling Although it is beneficial to improve the efficiency of the system if the tower is not insulated, it is to consider the winter insulation and antifreeze to ensure the operation, so consider the insulation.

Industrial cooling towers do not need to consider heat preservation during winter operation, because high-speed flowing water will not freeze. It will also reduce the burden on the system. Even if heat preservation is not in operation, it cannot be guaranteed not to freeze. For safety, put the water in Fall as good.

　　 To sum up, the part of the cooling tower for air conditioning, which is located under direct sunlight, should be insulated (avoid adding negative load to the system), and industrial cooling towers do not need to be insulated (drain the water when not operating in winter).

　　 In a project in Changchun, a certain year, the main cooling water pipe passes through the office area of the workshop. Because this area is heated by a radiator, condensation occurs in winter.

　　 It was very serious. The water dripped onto the desk on the occasion, and the drawing design did not require heat preservation.

　　 It should depend on the situation. Generally, the cooling water pipe exposed on the roof should be insulated, because the sun will increase the temperature of the cooling water. If you use cooling water for free cooling (in winter), the cooling water pipes should all be insulated.

　　 This depends on the actual place. If the temperature of the air conditioner room is too different from the temperature of the cooling water pipe, it needs to be kept warm. Otherwise, the surface of the cooling water pipe is easy to condense! Water dripping everywhere in the computer room is not good.