【Daily Question】Chemical Engineering Principles 225: Heat Exchangers (November 6)
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This post was last edited by Zaihui Kangqiao on 2015-11-13 at 15:29. The Chemical Engineering Theory section is now launching a \"One Question per Day\" activity to help everyone reinforce their basic knowledge in chemical engineering. Subsequent series such as \"Principles of Chemical Engineering,\" \"Mass Transfer and Separation,\" \"Thermodynamics in Chemical Engineering,\" and \"Chemical Process Engineering\" will also be introduced. We hope for your active support! Answers to the questions in the \"One Question per Day\" activity can be viewed directly, and the thread will be closed after 1 day! ! You receive 3 wealth points for participating, and an additional 3 wealth points for correct answers. Short answer question: How do heat loss losses in heat exchangers occur? How should this heat loss be reduced? Since the temperature of the outer wall surface of the heat exchanger is often higher than that of the surrounding air, the outer wall surface continuously transfers heat to the air around the heat exchanger through convection and radiation, resulting in heat loss. To reduce heat loss, a layer (or two layers) of insulating material with a low thermal conductivity (or two different types of insulating materials with low thermal conductivity) is generally applied to the outer surface of the heat exchanger. This increases the heat transfer resistance and lowers the temperature of the outer surface, thereby reducing heat loss.
Since the temperature of the outer wall surface of the heat exchanger is often higher than that of the surrounding air, the outer wall surface continuously transfers heat to the air around the heat exchanger through convection and radiation, resulting in heat loss. To reduce heat loss, a layer (or two layers) of insulating material with a low thermal conductivity (or two different types of insulating materials with low thermal conductivity) is generally applied to the outer surface of the heat exchanger. This increases the heat transfer resistance and lowers the temperature of the outer surface, thereby reducing heat loss.
How do the heat loss losses in heat exchangers occur? How should this heat loss be reduced? Since the temperature of the outer wall surface of the heat exchanger is often higher than that of the surrounding air, the outer wall surface continuously transfers heat to the air around the heat exchanger through convection and radiation, resulting in heat loss. To reduce heat loss, a layer (or two layers) of insulating material with a low thermal conductivity (or two different types of insulating materials with low thermal conductivity) is generally applied to the outer surface of the heat exchanger. This increases the heat transfer resistance and lowers the temperature of the outer surface, thereby reducing heat loss.
I don’t understand; it’s a matter of temperature differences, and insulation is needed to reduce losses
Make sure to take proper insulation measures where it’s necessary
Isn’t heat loss just the heat dissipation from the surface of the heat exchanger? To reduce heat dissipation, one goal is to ensure good insulation, and the other is to use pipes for areas with high temperatures.
1. Maintain the cleanliness of the piping network; whether before or after operation, it is necessary to clean the piping network in order to prevent blockages in the heat exchangers. It is also important to clean the dirt removers and filters in a timely manner to ensure the smooth completion of the entire process. 2. It is crucial to strictly control the quality of softened water; this is extremely important for any type of water quality assessment. Before carrying out treatment on the softened water, it is necessary to thoroughly check the quality of the water in the system as well as that in the softening tanks. If it is confirmed to be satisfactory, then the injection process can proceed. 3. Testing of the new system: For some new systems, it is not possible to use them in conjunction with the heat exchanger right away. First, the new system needs to be operated for a specified period of time so that its operating mode can be established; only after that can the heat exchanger be integrated into the system. This approach is taken solely to prevent impurities in the piping network from damaging the heat exchanger equipment.
How do the heat loss losses in heat exchangers occur? How should this heat loss be reduced? Answer: Since the temperature of the outer surface of the heat exchanger is often higher than that of the surrounding air, the outer surface continuously transfers heat to the air around the heat exchanger through convection and radiation, resulting in heat loss from the product. To reduce heat dissipation losses. Generally, one or two layers of insulating material with a low thermal conductivity are wrapped around the outer wall of the radiator. It increases the heat transfer resistance. Thereby reducing heat dissipation losses.
Answer: Since the temperature of the outer surface of the heat exchanger is often higher than that of the surrounding air, the outer surface continuously transfers heat to the air around the heat exchanger through convection and radiation, resulting in heat loss from the product. To reduce heat dissipation losses. Generally, one or two layers of insulating material with a low thermal conductivity are wrapped around the outer wall of the radiator. It increases the heat transfer resistance. Thereby reducing heat dissipation losses.
Since the temperature of the outer wall surface of the heat exchanger is often higher than that of the surrounding air, the outer wall surface continuously transfers heat to the air around the heat exchanger through convection and radiation, resulting in heat loss from the product. To reduce heat dissipation losses. Generally, one or two layers of insulating material with a low thermal conductivity are wrapped around the outer wall of the radiator. It increases the heat transfer resistance. Thereby reducing heat dissipation losses.