Views: 0 Author: Site Editor Publish Time: 2024-12-31 Origin: Site
Last week we have a short talk with some predecessor of cooling experts for our testing chamber products, there are some tips for choosing cooling system when we design our products. In face of the tense competition, we have to double and double check our cost when we do quotation for customer. Cost is the primary element for every supplier to win a project. Materials, techniques( design+engineering),deficiency would be the main elements for cost. Taking consideration of these factors, techniques maybe is the major distinction for every supplier.
Techniques sometimes can settle the score for some enterprises when you compete a contract. Therefore how to get a bid successfully on techniques, that is very important. For climatic testing chamber industry, VA and VE projects is very important for tendering. How to choose water cooling system or air cooling system in customized design is critical important. Here Danble climate engineer manager will give you some tips for choosing cooling system.
It has a great destructive effect on the ozone layer and has been eliminated by the international community. It cannot be used for any purpose such as export heat dissipation.
Although it is still used in some old chamber, it is destructive to the ozone layer. According to the provisions of international conventions such as the Montreal Protocol, its production and use are gradually reduced, and its export is also strictly restricted. In many developed countries, the import of refrigeration chamber containing R22 has been banned.
The US Environmental Protection Agency stipulates that after the signing of the final rule on October 5, 2023, the use of hydrofluorocarbons (HFCs) with high global warming potential (GWP) in aerosols, foams, and refrigeration, air conditioning and heat pump products and chamber will be restricted. R134a has a high GWP value. Within the scope of the restriction, the sale, distribution or export of related products and chamber will be prohibited three years after the date of manufacture or import restrictions.
It has high flammability and explosion risk, and its safety level is A3. It has great safety hazards during export, transportation and use. Many countries have strict restrictions and regulatory requirements on its use and import, and it cannot be used for heat dissipation outlets at will.
It is less flammable than R290, but it is still a flammable refrigerant. Once it leaks and mixes with oxygen in the air to a certain concentration range, it will burn rapidly or even explode when it encounters open flames, electric sparks or other ignition sources. Its export is also subject to certain restrictions.
In the field of consumer electronics: For example, computer CPU radiators, air cooling is used more frequently. Because for most ordinary consumers, such as daily office and light entertainment, air-cooled radiators can basically meet the heat dissipation needs, and they have the advantages of low cost, easy installation, and no need for additional complex water cooling circulation system construction and maintenance. Therefore, the radiators for ordinary desktop computers and laptops exported in large quantities are mostly air-cooled.
In the field of industrial and high-performance computing: In data center servers, high-end industrial control computers and other chamber with extremely high heat dissipation requirements, water-cooled radiators are used more frequently. Since these devices run at high load for a long time and generate huge heat, water-cooled heat dissipation can better maintain the stable operation of the chamber with its efficient heat dissipation performance, and ensure that the computing performance does not decrease due to overheating. Although its cost is high and the structure is relatively complex, it is widely used in such scenarios with strict requirements on performance and stability. Water-cooled radiators are often equipped in related high-performance chamber exported.
Consumer markets in developed countries in Europe and the United States: In ordinary home computers and other products, air-cooled radiators are more accepted and used more frequently. This is mainly because there are many DIY computer enthusiasts in Europe and the United States. Air-cooled radiators are easy to install and replace by themselves, and the local labor costs are high. In case of leakage and other faults, the repair costs of water-cooled radiators are relatively more troublesome and expensive. However, in the fields of high-end e-sports and professional graphics processing chamber, the application of water-cooled heat dissipation is also increasing.
Emerging market countries in Asia: With the rapid development of the e-sports industry, the demand for water-cooled radiators in the export of mid-to-high-end computer systems and related high-performance chamber has grown rapidly, and the frequency of use has a clear upward trend. Consumers are more pursuing the ultimate heat dissipation effect to ensure that the performance of the chamber is fully utilized. However, from the overall perspective of the proportion of quantity, air-cooled radiators still occupy a large share in the export of ordinary consumer-grade products due to factors such as affordable prices.
The structure of air-cooled radiators is relatively simple and compact, and it is not easy to be damaged by bumps, collisions, etc. during export transportation. Therefore, it has more advantages in some large-scale, long-distance export trades that have high requirements for transportation costs and product integrity. From this perspective, the frequency of use is relatively high. However, water-cooled radiators require more proper packaging and protection during transportation due to the presence of water pipes, water tanks and other components, otherwise it is easy to cause component damage and leakage.
The overall manufacturing cost and after-sales maintenance cost of air-cooled radiators are lower. For some price-sensitive export markets, such as low-end computers and small appliances in developing countries, air-cooled radiators are more commonly used, which makes them higher than water-cooled radiators in terms of export quantity and frequency of use.
In general, among the exported radiators, air-cooled radiators are more frequently used in some low-end and ordinary application scenarios, but the proportion of water-cooled radiators in high-end, high-performance and demanding heat dissipation fields is also gradually increasing.
Refrigerant is mainly used in water cooling, but it may also be involved in some special air cooling scenarios. The following is a detailed introduction:
In the water cooling system, the refrigerant plays a key role in transferring heat. Water cooling is usually composed of components such as water cooling head, water pipe, water pump, water tank and heat sink. Its working principle is to make the water cooling head in close contact with the heat source (such as computer CPU, server chip, etc.), absorb heat and increase the temperature of the internal refrigerant (common such as deionized water, ethylene glycol aqueous solution, etc.). The heated refrigerant flows in the entire water cooling circulation pipeline driven by the water pump and flows to the heat sink. The heat is dissipated to the surrounding air by using the heat dissipation fins and fans on the heat sink. After the refrigerant releases heat here, the temperature drops, and then it flows back to the water cooling head to continue circulating, constantly taking away the heat generated by the heat source. Therefore, the refrigerant is an indispensable part of the normal operation of the water cooling system and achieving efficient heat dissipation.
In conventional air cooling radiators, such as the downward pressure or tower air cooling radiators commonly seen on computers, the heat is mainly removed by natural or forced convection of air through cooling fins and fans, and refrigerant is not required. However, in some special air cooling application scenarios, such as the air-cooled condenser part of large industrial refrigeration chamber, the internal refrigeration cycle is actually similar to the principle of the water cooling system, but the final heat dissipation is through air cooling, that is, the fan blows air through the cooling fins of the condenser to remove the heat carried by the refrigerant (common refrigerants such as Freon and ammonia, which circulate in the refrigeration system to achieve heat transfer and exchange). Here, the refrigerant plays a core role in heat transfer in the entire refrigeration and heat dissipation system, but this situation is relatively less intuitive and widely used than in the water cooling system.
In general, refrigerant is a basic and conventional component in water cooling, and it is only used in complex systems involving specific refrigeration and heat dissipation in air cooling.
