09-02-13 Topic — In heat exchanger calculations, what is the primary water temperature and what is the secondary water temperature? (Participation rewards available)

1. Primary water generally refers to the water system from the heat source to the heat exchanger. 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints. 3. Plate heat exchangers are used for steam-water heat exchange, and specific requirements exist regarding steam pressure and temperature.

1. Primary water generally refers to the water that is used to heat a system. 2. Secondary water generally refers to the water that is being heated by a system. 3. Plate exchangers used for steam-water heat exchange must meet the relevant standard requirements regarding pressure and temperature.

The general approach to temperature field analysis is as follows: after establishing the model, convective boundary conditions are applied at the boundaries where heat transfer by convection occurs; this requires entering an initial temperature and a convective heat transfer coefficient, and therefore the analyst needs to know these two parameters. For heat exchangers, it is very difficult to obtain these two parameters, especially the convective film coefficient ； The initial temperature varies in different parts of the heat exchanger. Not only is it necessary to calculate the temperature field, but also the temperature difference stress. It seems that the results obtained using ANSYS for calculating the temperature field are not very accurate, as there are too many parameters that need to be determined manually; the convective coefficient, in particular, is difficult to determine. I wonder what methods others use to calculate the temperature field and the corresponding parameters. Traditional heat exchanger design theories, such as the logarithmic mean temperature difference method and the effectiveness-coefficient heat transfer unit method, are used to calculate heat transfer in heat pipe heat exchangers.

Primary water generally refers to the water system from the heat source to the heat exchanger, while secondary water refers to the water system from the heat exchanger to the heating endpoints. Plate exchangers are used for steam-water heat exchange; the steam pressure and temperature in such systems are relatively low, with the pressure usually being less than 2.5 MPa. Moreover, the heat exchange efficiency of plate exchangers for steam-water applications is relatively low.

1. Primary water generally refers to the water that is used to heat a system. 2. Secondary water generally refers to the water that is being heated by a system. 3. Plate exchangers used for steam-water heat exchange must meet the relevant standard requirements regarding pressure and temperature.

1. Primary water generally refers to the water that is used to heat a system. 2. Secondary water generally refers to the water that is being heated by a system. 3. Plate exchangers used for steam-water heat exchange must meet the relevant standard requirements regarding pressure and temperature.

1. Primary water generally refers to the water that is used to heat a system. 2. Secondary water generally refers to the water that is being heated by a system. 3. Plate exchangers used for steam-water heat exchange must meet the relevant standard requirements regarding pressure and temperature. Since the saturated steam pressure is related to temperature, it is actually limited by the design temperature of the gasket in the plate exchanger.

1. Primary water generally refers to the water system from the heat source to the heat exchanger. 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints. 3. Plate heat exchangers are used for steam-water heat exchange, and specific requirements exist regarding steam pressure and temperature.

1. Primary water generally refers to the water in the system that is being heated (the hot side). 2. Secondary water generally refers to the water in the system that receives heat (the cold side). 3. Plate exchangers used for steam-water heat exchange must meet the pressure and temperature requirements specified in relevant standards.

The primary water temperature of a heat exchanger refers to the temperature of the fluid being heated, while the secondary water temperature refers to the temperature of the fluid that performs the heating. The main disadvantage of plate heat exchangers is ； Plate-type heat exchangers have long sealing perimeters, making them prone to leakage. At the same time, due to the heat resistance of the gasket material, the operating temperature cannot be too high. Furthermore, in plate-type heat exchangers, the gap between the plates is too small, resulting in high fluid resistance and a tendency to clogging.

In multi-effect evaporators, there are terms such as primary steam and secondary steam; I’ve heard of the terms primary water and secondary water in heat exchangers for the first time. Looking forward to the standard answer.

1. The primary water temperature refers to the water system from the heat source to the heat exchanger. 2. The secondary water temperature refers to the water system from the heat exchanger to the heating endpoints. 3. The connection between the ends of the pipes and the pipe sheets can be achieved using welding or expansion jointing methods. The shell is then welded to the tube sheet. Thus, the tube bundle, tube sheet, and shell become an inseparable whole. Plate exchangers for steam-water heat exchange have requirements regarding both steam pressure and temperature.

When selecting plates for a steam-water heat exchange system, phase change must be taken into consideration. In cases of condensation and evaporation, a single-pass system can only be used, and the fluid being condensed should flow from top to bottom to facilitate the removal of the condensate ； For evaporation conditions, the evaporation medium flows in a single direction, from bottom to top, which facilitates the removal of steam!

1. The temperature of the primary water in the heat exchanger refers to the temperature of the fluid being heated. 2. The temperature of the secondary water in the heat exchanger refers to the temperature of the fluid that is being warmed up. 3. Plate exchangers for steam-water heat exchange require steam pressures and temperatures that meet specific standards.

1. The water circuit once generally refers to the water system from the heat source to the heat exchanger, that is, where the hot fluid releases heat (the hot side). 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints, that is, where the cold fluid is heated (the cold side). 3. Plate exchangers used for steam-water heat exchange must meet the pressure and temperature requirements specified in relevant standards. Generally, the steam pressure and temperature are relatively low; the pressure is usually less than 2.5 MPa, and the heat exchange efficiency of plate exchangers for steam-water applications is low.

1. The primary water temperature of the heat exchanger refers to the temperature of the fluid being heated. 2. The temperature of the secondary water in the heat exchanger refers to the temperature of the fluid being heated. 3. The plate exchanger used for steam-water heat exchange must meet the requirements of relevant standards regarding both steam pressure and temperature.

1. Primary water generally refers to the water system from the heat source to the heat exchanger. 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints. 3. Plate heat exchangers are used for steam-water heat exchange, and specific requirements exist regarding steam pressure and temperature.

Let me talk about it as well. 1. Primary water generally refers to the water system from the heat source to the heat exchanger. 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints. 3. Plate exchangers are used for steam-water heat exchange, and there are requirements regarding steam pressure and temperature. That is, the pressure is below the bearing capacity of the heat exchanger, and the temperature is below the operating temperature of the gasket.

1. Primary water generally refers to the water system from the heat source to the heat exchanger. 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints. Plate heat exchangers are used for steam-water heat exchange; the steam pressure and temperature in such systems are relatively low, with the pressure usually being less than 2.5 MPa, and the heat exchange efficiency of plate heat exchangers for steam-water applications is relatively low. This post was last edited by vivo1314 on 2009-2-15 17:20.]

1. Primary water generally refers to the water system from the heat source to the heat exchanger. 2. Secondary water generally refers to the water system from the heat exchanger to the heating endpoints. 3. Plate heat exchangers are used for steam-water heat exchange, and specific requirements exist regarding steam pressure and temperature. The pressure is below the bearing pressure of the heat exchanger, and the temperature is below the operating temperature of the gasket. The steam pressure and temperature are both relatively low; the pressure is generally less than 2.5 MPa, and the heat exchange efficiency of the plate exchanger for steam and water is low. This post was last edited by yinghuochong18 on 2009-2-15 17:46.]