Tuesday, December 6, 2011

Comparison Among Stainless-steel Tube & Copper Brass Tube in Heat Exchanger

Nowadays, heat exchanger is applied ever more vastly in areas such as industry and agriculture. So, how to choose a well-functioned and durable heat exchanger? Right now, there are mainly two forms of heat exchangers at the market – the stainless-steel tube exchanger and the brass tube heat exchanger.Choose quality rod mill, coal mill and water coal slurry equipment from China leading supplier and distributor Which can be better? Today, I wish to give a detailed comparison of the two exchangers and hope it can be some help to you!


First of all, a list of the attributes of stainless-steel tube is presented!


One: with as thin as 0.5-0.8mm thin wall, the overall performance of the stainless steel heat exchanger is improved. Under the circumstance of equal heat-exchanging areas, the overall heat transmission coefficient of the stainless steel tube is 2.121-8.408% higher than that of the brass tube.


Two: taking the SUS304 alloy metal as its material, the tube is with high rigidity which will make the tube more resilient to impact and shock.


Three: thinly walled, the stainless steel tube has its heat transmission reinforced and anti-corrosion performance improved.


4: to relieve the welding force, the stainless steel tube is air-shield processed in temperature as high as 1050??.


Detailed comparison


One: heat transmission


The overall heat transmission coefficient is likely to differentiated due to the differences in their respective coefficients, with brass 100W/m?? and stainless-steel 13W/m??. Nevertheless, the thickness of the stainless steel can be thinned to 0.5mm to 0.8mm, while the brass tube, due to its rigidity and anti-corrosion characteristics, its thickness should really be no less than 1.2mm.


Two: heat convection


The thickness of the basement of the static current is hold most attributive to heat transmission, as the generated current is turbulent; either it really is steel tube or brass tube. The thickness of the basement of the static current hinges on the coarseness of the inner wall of the tube when the current state is identical.Rod mill is extensively applied to metal and non-metal mines and water conservancy. The machine can be employed in tungsten and tin ores, along with other rare metal ores, in order to stop the damage of over grinding, they most often adopt rod grinding; when making use of two stages ore grinding progress, on the condition where the pretty first stage is grinding from among twenty and 6 mm to between three and one mm, adopting rod grinding as the ore grinding device of 1st stage, and then the manufacturing capability is really significant, besides, the efficiency is moreover high. The inner wall of the brass tube, when oxidized, will be thickened. As a consequence, the heat transmission coefficient of the stainless-steel tube will be much higher than

Three: economic efficiency


With the elongated operation period, the oxidized layer of the brass tube will get thickened, and make the heat transmission performance worsened, whereas the stainless steel tube shows no oxidation or rather little oxidation. Therefore, the stainless steel tube heat exchanger will witness longer operation period.

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