[Positive heat exchanger]Characteristics of positive displacement heat exchanger Principle of positive displacement heat exchanger
Volumetric heat exchangers are mainly composed of tube boxes, tube bundles, shells, safety control devices, temperature regulators, thermometers, pressure gauges, etc.
The volumetric heat exchanger is a new type of patented heat exchanger. It is based on the successful experience of the “RV-02” double-tube bundle volumetric heat exchanger series to overcome the large steel consumption and The new generation of volumetric heat exchanger, which has been launched due to the shortcomings of high equipment room requirements, few varieties and specifications, and large selection limitations, has passed the thermal performance measurement of the North China Test Center Station of the Ministry of Mechanical and Electrical Engineering, and its thermal performance far exceeds other similar products. At present, the most ideal and sensible heat exchange equipment for hot water water units.
Working principle of volumetric heat exchanger:
The volumetric heat exchanger is a partition heat exchanger, which uses a solid wall to heat The two alternating flows are separated, so that they can transfer heat through the wall, thereby realizing the technological purpose of heat exchange between the two fluids. In a volumetric heat exchanger, the tank is filled with water, cold water enters from the bottom of the heat exchanger, and hot water flows out from the top of the tank. In the process of water flow, a local stagnation area (cold water area) will be formed, the heat exchange is insufficient, and the water temperature rises slowly, especially in the horizontal volumetric heat exchanger.
Schematic diagram of volumetric heat exchanger
Characteristics of volumetric heat exchanger:
1 . The temperature drop of the heat medium in the volumetric heat exchanger is large. During steam-water heat exchange, the outlet temperature of condensed water is about 50°C, and steam traps should be installed up and down the return pipe, which is convenient for use and maintenance. The high temperature hot water of ～150℃ can be lowered to 70～75℃ after heat exchange.
2. The volumetric heat exchanger has good heat exchange effect, good heat dissipation effect, small heat dissipation loss and energy saving. At the same time, when steam is used as the heat medium, about 15% of the heat of condensate water can be recovered, which accounts for about 15% of the total heat exchange.
3. The cold water area is small and the volume utilization rate is high.
4. The advantages of volumetric heat exchanger with large water storage capacity, low head loss, safe and stable water supply, and convenient cleaning are maintained.
