[Ethylene Question Bank] How to determine the inlet and outlet pipelines for the cooling water of a circulating water cooler at the plant site
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1. How to identify the inlet and outlet pipelines for the cooling water of the circulating water cooler at the installation site. Answer: a. Feel the temperature of the pipeline with your hand; the higher temperature indicates the outlet pipe, while the lower temperature indicates the inlet pipe. b. Observe the location of the cooling water pipeline and the heat exchanger; generally, the cooling water pipeline enters from below and exits from above. c. Observe the accessories on the cooling water pipeline; a safety valve is generally installed at the outlet. Everyone is welcome to discuss knowledge related to ethylene; let’s learn together and make progress together! ************************************* 1. What is HaiChuan Freelancer? Let me tell you: http://bbs.hcbbs.com/thread-1577567-1-1.html (Source: HaiChuan Chemical Forum) 2. “Freelancer promotion ads” – don’t worry about the two yuan; just go ahead! http://bbs.hcbbs.com/thread-1578479-1-1.html (Source: Haichuan Chemical Industry Forum) 3. Guan Guan tells you: N ways to obtain Haichuan coins. http://bbs.hcbbs.com/thread-1578744-1-1.html (Source: Haichuan Chemical Forum) 4. Support Guan Guan – what’s returned to you is real wealth in the form of Haichuan coins. http://bbs.hcbbs.com/thread-1577520-1-1.html (Source: Haichuan Chemical Forum) 5. ★Shida Chemical Sales★ Water reducers and surfactant products. http://bbs.hcbbs.com/thread-1577814-1-1.html (Source: Haichuan Chemical Forum) 6. [Weekly Topic] The impact of heavy rain on plant operations (Replying earns +5 wealth points). file:///C:\Users\ADMINI~1\AppData\Local\Temp\%W@GJ$ACOF(TYDYECOKVDYB.png http://bbs.hcbbs.com/thread-1584246-1-1.html (Source: Haichuan Chemical Forum)
1. Check the temperature: the temperature of the inlet pipeline is lower, while the temperature of the return pipeline is higher； 2. Check the pressure: the pressure in the inlet pipeline is high, while the temperature in the return pipeline is low ； 3. Check the inlet and outlet: the water inlet is at the bottom of the equipment, while the water outlet is at the top
High temperature is the outlet, low temperature is the inlet
You can tell by touching it – the hot side is the outlet, and the cold side is the inlet. Regarding the heat exchanger as well, generally, the cold fluid enters from below the device, while the hot fluid exits from above
The most basic principle is to buy low and sell high.
1. It can be determined from the inlet and outlet pipelines of the cooler’s cooling water that the cooling water flows in from below and out from above; the lower end is the inlet while the upper end is the outlet, after which it returns to the main pipe； 2 Determine using ground instruments: the pipe equipped with a pressure gauge is the inlet pipe, while the one equipped with a thermometer is the outlet pipe. 3 During normal operation, by touching the pipe wall with your hand, the pipe with a higher temperature is the outlet pipe, while the one with a lower temperature is the inlet pipe. If there are thermometers on both the inlet and outlet pipes, it is even easier to determine which one is which.
The temperature varies; the inlet temperature is low while the outlet temperature is high； The pressures are different; the inlet pressure is high while the outlet pressure is low ；
The line with a higher temperature is the return line, while the one with a lower temperature is the supply line.