Selection and Application of Volumetric Heat Exchangers
Release time:
2021-09-01 10:22
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Selection and application of volume-type heat exchangers
Selection methods for volume-type heat exchangers
Selection is completed through calculation, and the heat exchange area is calculated to complete the selection. Simple to use in production; specifications and models can also be selected based on experience. Most require detailed calculations to complete the selection.
The selection of a volume-type heat exchanger should first consider the hourly water consumption, and secondly, the buffer volume to prevent hot and cold water mixing. The general buffer volume is the hourly water consumption of1/4。or according to10-15minutes of buffer water volume.
A volume-type heat exchanger consists of three main parts: a hot water tank, a built-in heater, and an automatic temperature control. Main structural features: Uses multi-passUshaped tubes as heating elements, with side inspection holes for easy maintenance. Water supply is designed according to secondary flow rate, ensuring stable water supply even during peak water consumption. Easy to achieve automatic temperature control; water supply pressure changes are minimal, ensuring system hot and cold water pressure balance. The heating section has a high heat transfer coefficient, large heat exchange capacity, sufficient heat exchange, and convenient maintenance. The heat exchange structure is mainlyUUshaped tubes, with a net distance of11~25mm
between the outer walls of the tubes, facilitating cleaning and maintenance.
Applications of Volume-Type Heat Exchangers Suitable for hot water supply systems in general industrial and civil buildings. Volume-type heat exchangers are widely used. Radiators used for heating in daily life, condensers in steam turbine systems, and oil coolers in aerospace rockets are all heat exchangers. It is also widely used in the chemical, petroleum, power, and nuclear energy industries.
Its main function is to ensure the specific temperature required for the medium during processing; it is also one of the main devices for improving energy utilization efficiency.
Cleaning Methods for Volume-Type Heat Exchangers Due to the complex piping layout, the pickling solution is difficult to fill the entire pipe cavity, and traditional cleaning methods (pressurized pickling of the entire pipe system, followed by soaking, venting, and circulation) chemical cleaning methods cannot be used. Moreover, chemical cleaning methods are very expensive.1000barLater, high-pressure cleaning machines with pressure64L/minand flow rate30were used, with cleaning performed in sections every
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