Shandong Zhilin Environmental Protection Technology Co., Ltd.

Positive displacement heat exchanger - suitable for hot water supply systems in industrial and residential buildings

Release time:

2021-09-16 11:57

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Volume-type heat exchangers have the following characteristics: they combine heat exchange and heat storage functions. Volume-type heat exchangers are also called heat storage heat exchangers. As the name suggests, it is a heat exchanger with a certain heat storage capacity, that is, it has both heat exchange and heat storage functions. This is a significant difference from rapid heat exchangers. The heat storage part is equivalent to a high-level water tank in the cold water system. About 60% of the area above the heat exchanger tube bundle is hot water at the same temperature, providing storage and regulation capacity for the uneven water supply system, making the water supply system stable and safe. The pressure drop of the hot water passing through the water tank is very small. Because the cross-sectional area of the cold water passing through the volume-type heat exchanger is large, the flow rate is less than

Volume type heat exchanger——Suitable for hot water supply systems in industrial and civil buildings

Volume type heat exchangers have the following characteristics: They have both heat exchange and heat storage functions. Volume type heat exchangers are also known as heat storage heat exchangers. As the name suggests, it is a heat exchanger with a certain heat storage capacity, that is, it has both heat exchange and heat storage functions. This is a major difference from fast heat exchangers. The heat storage part is equivalent to the high-level water tank of the cold water system. Approximately60% of the area above the heat exchange tube bundle is hot water at the same temperature. This provides storage and adjustment capacity for uneven water supply systems, making the water supply system stable and safe. The pressure drop of hot water passing through the tank is very small. Because the cross-sectional area of the cold water passing through the volumetric heat exchanger is large, the flow rate is less than 0.01m/s, and the pressure drop is small, generally only 0.1~0.2m, which is very beneficial for maintaining pressure balance. Hot and cold water supply at the water supply point. Hot water supply usually has a water supply system. Both hot and cold water are supplied from the same area's high-level water tank or unified water source. Cold water is directly sent to the water intake point through the water supply pipe, with low resistance. Hot water is transported to the water intake point through the heat exchanger and pipes, with high resistance along the way. If the resistance of the heat exchanger exceeds 1m, it will cause an imbalance in the water supply pressure at the water supply point, especially unfavorable water supply points, which will cause users to frequently adjust, wasting water and energy, and resulting in a poor user experience. Volume type heat exchangers can overcome this problem. The requirements for the heat medium are not strict. Volume type heat exchangers have a large heat storage capacity, and their heating load can be calculated according to the maximum hourly heat consumption, which can reduce the heat source and pipe network load by half, greatly saving the investment of the heat medium supply system, and the use of the heat medium is more uniform, which is conducive to improving the efficiency of the heat source and extending its service life.

Volume type heat exchanger

Volume type heat exchangers have a wide range of applications and are suitable for hot water supply systems in general industrial and civil buildings. For example:

Hotel hot water, in China, hotels, large restaurants, large hotels, and large apartment buildings that need accommodation and bathing all need“Central heating”, that is, setting up a boiler room, using municipal high-pressure, high-temperature water, solar high-temperature solution, or boiler hot water, and even the heat source can be steam, using a single unit or multiple units in parallel, uniformly preparing hot water, and transporting it to the water intake point through hot water pipes.

Hospital hot water, whether it is a ward building or an outpatient building, needs real-time supply50-60 degrees Celsius hot water, used to clean wounds or wash hands, or for other washing purposes. In hospitals, water is used 24 hours a day, so it requires timely performance and cleanliness, and the height of hospital buildings is relatively high, and the equipment also requires a design pressure of 6 -16 kg, and the volume type heat exchanger is equipment that continuously supplies hot water under this pressure. The hot water in bathing places, hot springs, and swimming pools needs hot water supply in these three places. Especially in winter, without constant hot water, the three places cannot provide operational services. Hot water for bathing in the dormitories of large factories and mines. For some factories and mines with hundreds or thousands of people, a central heating boiler room can be built in the dormitory area.`nbsp_tag

Let me explain the characteristics of the heating network heater.

Selection and Application of Volumetric Heat Exchangers