Heat exchanger
In today's industry, heat exchangers are used mostly in areas such as food processing plants, beverages serving our daily tastes, to industrial factories such as shipbuilding, Diesel Engine petroleum, chemicals, thermoelectricity, microchip electronics ... So what is heat exchange? Currently, what are there common types of heat exchangers. What does Origin Pipe have solutions and services for heat exchangers.
First of all, heat exchange is the transmission of heat when there is a temperature difference. The amount of thermal energy in heat exchange is called heat and is a variable process. The process of heat exchange takes place in the direction of transferring heat energy from high-temperature places to low temperature places. This, in turn, will cause the temperature of the hot liquid to drop and the temperature of the refrigerant to rise. The physical quantity that describes heat exchange is the heat according to the formula: Q = mc (t2-t1)
From the above principle we often have the following common types of heat exchangers:
1) Plate heat exchangers include the following format:
- Heat exchangers in the form of rubber gaskets compound consist of a series of thin metal sheets made of stainless steel, titanium, Hastelloy ... sealed together by synthetic rubber gaskets and a firm frame. Two lines of hot and cold liquids will flow in the gap between the two metal plates, depending on the heat transfer requirements, the surface of the metal sheets will be suppressed to increase the turbidity of the liquid is H (high), L (low) or M (Medium). The advantage of this form of plate assembly type removable plate for easy cleaning or custom fitting additions plates new plates for heat transfer needs
- Welded plate heat exchanger is a fixed piece of metal composed of thin metal plates completely welded together to create grooves for hot and cold fluid flow turbulently in these slots. The advantage of this type of this weld sealing is that it can withstand temperatures as high as 200 ° C and pressures up to 30 bar, but the media needs to be clean and the particle size is less than 1mm.
- The semi-hermetic heat exchanger consists of pairs of thin metal plates welded together by a laser called pairs of catset which are alternately coupled with sealing gaskets. Here the gas (NH3) will flow on the surface of the catset pair and the remaining fluid will flow in the gap between the pair of catset connected by rubber gaskets to form a two-phase heat exchange (gas-liquid phase ). The advantage of this type is that it can also be removed easily for cleaning or adding or remove customized catsets for heat transfer demand.
- Shell and tube heat exchanger is like a beam heat exchanger consisting of thin metal plates welded by Tig / Mig together to create a block and cage in a cylindrical tube, the gap between plates contain gas (NH3) or chemicals and residual fluid will flow in the empty part of the cylindrical cover. This tube type has two main types: completely sealed and removable cap for easy cleaning.
2)Tubular heat exchangers include the following main types:
- Shell and tube heat exchanger consists of a bunch of tubes positioned on the floor then inserted into a metal cylindrical casing. Depending on the layout of the beam structure, creating turbulent flows of liquid to increase heat transfer: 1 line, 2 lines, 3 lines, 4 lines ... and give many shapes of the cage in other shells. different types: straight, U-shaped. The advantage of this type is that the tubes will contain dangerous chemicals, highly corrosive and toxic with environment that save space, such as lubrication heat exchanger on board, the chemical heat exchanger in industrial factory
- Shell tube heat exchanger: including long U-shaped tubes of copper, stainless steel or steel will position into the heat exchanger plates. Here the heat transfer material locate inside the tube, the material was transferred heat locate outside the tube through the fins. The convection is carried out through natural or forced methods by suction or blowing system. This form is commonly used for air conditioners, central cooling units, coolant tanks on motor vehicles.
- Tubular heat exchanger consists of zigzag piping system containing liquid after pasteurization system by heat exchanger. The liquid is then heated through a heat exchanger to be pumped into this pipe system to keep heating. The pipes are insulated outside connected by valves to store the liquid inside piping for a certain period of time. The heat loss on the pipe is very low, about 0.5oC to 1.5oC and is used extensively in fish sauce factories, beverage processing plants.
Our Origin Pipe Company with experienced technical team and heat calculation software will provide customers with new heat exchangers to satisfy customers' requirements with the lowest cost and contemporaneous we provide services to install the complete piping, valve system, connect to the heat exchanger and have flow, temperature of hot side or cool side checking device to ensure compliance with customer requirements on cooling temperature before handover test run
In addition, we provide repair and maintenance services such as dye check, fouling clean inside the heat exchanger by CIP circulating pump system and chemical or manual cleaning of each plate, each tube. Beside we also supply equivalent spare parts of ALFA LAVAL, SONDEX, KELVION, TRANTER, SWEP, SCHMITD, DONGHWA, FISCHER, HISAKA, PASILAC such as gasket, welding plate, copper pipes, stainless steel with the most reasonable cost. .