Help question: Calculation of the heat exchange area of a condenser
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Our company is now planning to install a 5-ton distillation tank for vacuum distillation of water. The heat source is steam, with the temperature inside the tank ranging from 70 to 90°C. The vacuum pump has an exhaust capacity of 200 L/s. The condenser used in conjunction with this vacuum pump relies on circulating water as the cooling medium, with the temperature of this circulating water being between 30 and 32°C. The amount of water that can be distilled is 500 kg/h, and the condensation efficiency is around 90%. How should the heat exchange area of the condenser be calculated? Tube heat exchanger
I came across it by chance and wanted to learn more about it; I hope someone knowledgeable can answer my questions
It is necessary to know the flow rate of the heat source and its inlet and outlet temperatures, as well as the flow rate of the cold source and its inlet and outlet temperatures; 5 out of these 6 conditions are required. Additionally, pressure information is also needed
You need to provide the temperature changes and flow rates of the heat source, as well as those of the cold source; only by providing this information can we carry out the calculations
The heat source is steam at 0.25 MPa, while the cold source is circulating water with a flow rate of 20 m3/h and an inlet temperature of 30°C. The inlet temperature of the water vapor in the condenser is approximately 40–60°C, whereas the outlet temperature is below 35°C.
The heat source is steam at 0.25 MPa, while the cold source is circulating water with a flow rate of 20 m3/h and an inlet temperature of 30°C. The inlet temperature of the water vapor in the condenser is approximately 40–60°C, whereas the outlet temperature is below 35°C.
The condensed water vapor should flow through the shell side, while the cooling water flows through the tube side; the condenser should be placed horizontally, right? What is the operating pressure on the process side that is still missing? If it is pumped with a vacuum pump, it will definitely be in a vacuum state. Is it acceptable to use the saturated vapor pressure of water vapor at 40~60°C? Also, what is the flow rate of the non-condensable gases? What are the material requirements for heat exchange tubes?