Cleaning of tube heat exchanger before installation

-

Murphy of thermal equipment in thermal efficiency is higher, small heat loss, under the precondition of good working conditions, heat transfer coefficient can reach 6000 wm / 2 k, under the precondition of general condition, this column tube exchanger equipment of heat transfer coefficient can also be used in 3000 ~ 4000 wk, a tube and shell heat exchanger is 3 ~ 5 times, all through the equipment of the fluid can be formed in the plate corrugated under the action of turbulence, sufficient heat exchange.
Tube heat exchanger products are widely used, the equipment can achieve high temperature resistance of 180°C, pressure resistance 2.0mpa. It is convenient for inspection and cleaning. The heat exchange plate is assembled together by clamping force of the clamping stud. During inspection and cleaning, only the clamping stud is needed to release the plate for washing. 
https://szmurphy.en.alibaba.com/product/62416444850-811592052/Murphy_Copper_finned_tubes_laser_welding_heat_exchanger_Laser_Welded_Finned_Tubes_heat_exchange_for_Solar_Water_Heating.html?spm=a2700.icbuShop.41413.11.68016a21riWLwn

 Tube heat exchanger equipment because of a long time to work, the heat transfer plate surface will produce different degrees of dirt or sediment, thereby increasing the flow resistance and reducing the heat transfer function, these are mainly manifested in the increase of pressure difference between the inlet and outlet pressure gauge and cold medium outlet temperature, so it must be checked and cleaned.
Tube heat exchanger adopts reasonable process design to prevent corrosion:
In order to avoid the retention of residual liquid and sediment, double-sided butt welding and continuous welding should be adopted when welding the tube heat exchanger in use, avoiding lap welding and spot welding. Because the plate is very thin, less filler wire is added after welding melting, which is easy to cause poor weld forming. Therefore, 100% of the wire should be filled in the welding process to ensure good weld forming.
In the use of tube heat exchanger can reduce the erosion of the medium:
For example, austenitic stainless steel is prone to stress corrosion in neutral chloride solution, but as long as the mass concentration of oxygen in the medium is less than 1.3mg/m3, stress corrosion will not occur. Therefore, stress corrosion can be controlled by removing dissolved oxygen and oxidizer from the medium.

评论

发表评论

此博客中的热门博文

Everything you should know about U bend tube

-
图片
  Murphy can make  U bend tube  in our factory according to customer requirements. The elbow is heat treated according to the customer’s requirements, and then hydrostatic pressure test and dye penetration test are performed as needed. U-shaped elbows are widely used in  heat exchanger  systems. Heat exchanger equipment based on stainless steel U bend tube plays an important role in the nuclear industry and petrochemical machinery manufacturing. U bend tube heat exchangers are specially designed for high temperature applications, especially steam condensing or hot oil systems. When the differential expansion makes the fixed tube-sheet heat exchanger unsuitable, and in some cases the floating head type (HPF) cannot be selected, the U bend tube heat exchanger will be selected. The surface of the finished U-shaped elbow should be free from scale and scratches after bending. Dimensional tolerance U-bend pipes are in accordance with relevant regulations of TEMA R.C.B...
阅读全文

EVERYTHING YOU CAN KNOW ABOUT HEAT EXCHANGER

-
图片
  A heat exchanger is a device designed to transfer heat between two or more fluids with different temperatures (ie liquid, vapor or gas). Depending on the type of heat exchanger used, the heat transfer process can be gas-to-gas, liquid-to-gas or liquid-to-liquid and takes place through a solid separator that prevents fluid mixing or direct fluid contact. Other design features, including building materials and components, heat transfer mechanisms, and flow configuration, also help to classify the types of heat exchangers available. After discovering applications in a wide range of industries, we designed and manufactured a variety of heat exchange equipment used in heating and cooling processes. This article focuses on heat exchangers, exploring various available designs and types, and explaining their respective functions and mechanisms. In addition, this article outlines the selection considerations and common applications of each type of heat exchange equipment. Heat Exchanger t...
阅读全文

How to Optimize the Design of Finned Tube Phase Change Heat Storage

-
图片
  Finned tube structure Finned tubes are widely used in power, chemical and other industries. Many spiral heat transfer surfaces or threaded tubes can be regarded as finned tubes. It has a significant effect on expanding the heat transfer area and promoting turbulence, and it has a great effect on both single-phase-convection heat transfer and phase-change convective heat transfer.  The structure of the finned tube heat exchanger is basically the same as the general shell and tube heat exchanger. Just use finned tubes instead of light tubes as the heat transfer surface. Finned tube heat exchangers are also often used to heat or cool the gas outside the tube, and steam or water is passed through the tube, such as air coolers, boiler economizers, radiators, etc.   Finned tube material The finned tube has a wide range of materials, including stainless steel, carbon steel, titanium and copper alloys, etc. The corrosion resistance of the industry has greatly increased. Laser w...
阅读全文