What is screw thread tube heat exchanger
A Screw Thread Tube Heat Exchanger is a type of heat exchanger that uses a helical screw thread to create a heat transfer surface between two fluids. The screw thread design increases the heat transfer area and turbulence, resulting in improved heat transfer efficiency. This type of heat exchanger is commonly used in industrial applications where high heat transfer rates are required. Screw thread tube heat exchangers have been widely used in thermal power, petroleum, chemical, natural gas, light industry, metallurgy, and the citys central heating system, among other applications. Screw thread tube heat exchangers have gradually replaced shell and tube heat exchangers and heat transfer equipment as the primary areas as technology has improved.
In the thermoelectric industry, screw thread tube heat exchangers are used.
Screw thread tube heat exchanger applications in thermoelectric power plants are primarily made up of Qi - water heater to reflect. The use of a screw threaded tube heat exchanger to circulate heated water through a steam power plant. For example, a high temperature heater heated to about 150 °C, a basic heater heated to 110 °C or so. The problem is then solved by circulating water supply millions of households, residents of winter heating. This cogeneration mode not only saves energy, but also improves the urban living environment and fosters social interaction.
Screw thread tube heat exchanger used in the thermoelectric sector.improvement of peoples living standards, is bound to increase the living area. A significant increase in living space heater to make the plants original heating capacity appear dwarfs, which requires increasing the heat transfer area, but space Power plant is constant, so the use of screw thread tube heat exchanger to replace the original Some of shell and tube heat exchanger, completely solves the above problem.
Screw thread tube heat exchangers used in oil fields.
The oil industry is the pillar industry of Chinas national economy, and its development is bound to play a significant role in promoting the national economy; thus, full implementation of energy-saving technology is a must in the oil industry.
In general, crude oil pumped from the ground has a high viscosity, making transportation of crude oil from the spring and very far away difficult. However, lowering the viscosity of crude oil makes transportation of crude oil much easier. One approach is to raise the temperature of the crude oil.Previously, an oilfield with a gas furnace was used to heat the crude oil, which not only consumed a large amount of natural gas, but also had a very low efficiency, resulting in significant energy waste. Because the well platform employs a screw thread tube heat exchanger, it not only saves energy but also produces good results. Each well is equipped with a small screw thread tube heat exchanger. By passing crude oil through the tube between the tubes into the hot water from the boiler room, crude oil is heated from about 20 °C to about 50 °C, resulting in a significant decrease in oil viscosity. A boiler room can also bring a large number of screw thread tube heat exchangers.
Screw thread tube heat exchanger used in the chemical field.
The chemical industry is one of the most common heat exchanger fields; large chemical plants have thousands of heat exchangers, but these are shell and tube heat exchangers. An oil refinery in Xinjiang spiral thread tube heat exchanger allows organic vapor condenses into a liquid, as well as chemical plants spiral thread tube heat exchanger as reboiler, mixing organic matter is heated to 90 °C, making it a mixture of steam, and then enter the cooling tower, again and again, indefinitely. Some plants also use screw thread tube heat exchanger medium, which is heated to a specific temperature before entering the chemical reaction tower.
Despite a small amount of experimental observation, screw thread tube heat exchanger have been used in the chemical industry. And it was used for a non-important occasion. Screw thread tube heat exchangers require time to completely replace the shell and tube heat exchangers, and there are subjective and objective factors to consider. The goal is to screw thread tube heat exchanger of this new product and some need to be perfected, there is much work to be done, thus limiting the products wide range of promotion and application in the chemical industry.
Screw thread tube heat exchanger used in LPG respect residents.
Screw thread tube heat exchanger is applied to LPG heating system began in 1992. A gas company adopted the Shenyang Institute of instrumentation technology, the two outer diameter & amp; Oslash; 325mm, heat transfer area of 5m & amp; sup2; small screw thread tube heat exchanger, to accelerate urban residents liquefied petroleum gas of. Heating source for the hot water 70 ℃, working pressure 0.3MPa, hot water running in the tube, liquefied petroleum gas in the shell operation. LPG is provided at the outlet of a block plus liquid board, the level of liquid LPG at 1/2 of the housing, and the remaining principal of the evaporator heat transfer area of liquefied gas carried in the liquid evaporate further, if LPG Also liquid is carried, then recovered from blocking liquid plate at the exit, and along the shell wall flow back to the bottom of the housing, so that LPG can fully gasified. Since the use of bellows tubes, and achieved satisfactory results.
Screw thread tube heat exchanger applications in light industrial areas.
Screw thread tube heat exchanger also has broad application prospects in the field of light industry. A brewery use screw thread tube heat exchanger to cool the beer sauce. The cooling medium is liquid ammonia, at a temperature of -5 ℃ --- 6 ℃, liquid ammonia in the shell. Beer juice is cooled medium, an inlet temperature of 13 ℃, outlet temperature is 1 ℃ --2 ℃. Beer, juice in the tube, its work flow shown in Figure 6-34. Beer, juice enters the releasing heat within the heat exchanger, the temperature dropped to 1 ℃ --2 ℃ after entering the storage tanks storage stand. Meanwhile, the ammonia evaporation absorbs heat beer juice, evaporated ammonia then compressed by the compressor form ammonia -5 ℃ --- 6 ℃, and then enters the heat exchanger, to complete a cycle.
Screw thread tube heat exchanger applications in urban central heating area.
In recent years, according to energy saving and environmental protection, many cities have built a number of residential areas, and accordingly the proposed guidelines and principles heating district heating, which greatly promoted the construction of urban central heating rationalization and modernization. Central heating has become a hot cities construction.
Central heating system, a heat exchanger is used for heat exchange equipment were major, previously used shell and tube heat exchangers as well as a small amount of plate heat exchanger. However, as a central heating with heat exchanger has its own unique requirements, such as: the requirements of the heat transfer coefficient is high, cold and hot fluid temperature difference is low, no leakage, easy to plug, easy to scale, so as to meet the special central heating Claim. Shell and tube heat exchangers and plate heat exchanger can not simultaneously possess these characteristics, and corrugated tube heat exchanger applications has solved this problem. 1990 Winter in Shenyang two heating cells used screw thread tube heat exchanger prove screw thread tube heat exchanger has a heat transfer coefficient, no leakage, no blockage, difficult to scale, good corrosion resistance, suitable for low temperature poor conditions, easy cleaning and maintenance, etc., the effect is obvious.
Screw thread tube heat exchanger applications is extensive, it can not only be used as a preheater and economizer, buildings, church, museum prepared with hot water may be employed helical thread tube heat exchanger to complete, the The difference is that in some cases different forms of structure, different materials only.