KATEGORI

8-28 Are the temperature rise and fall amplitudes of cold and hot air equal in the precooler?

In the precooler, cold and hot compressed air exchange heat and mass, but due to phase change and condensation in hot air, the temperature change amplitudes of cold and hot air are unequal.

Butiran Kes

Answer: In the precooler, the cold and hot compressed air exchange heat and mass, and the total heat exchanged is equal. However, the saturated hot air flow undergoes phase change during the cooling process, and condensation occurs, which consumes part of the cooling capacity. The heat absorbed by the cold air flow during the heat exchange process is all used for heating, so the temperature change amplitudes of the cold and hot air flows are different. The rule is that the temperature drop amplitude of the hot air flow is smaller than the temperature rise amplitude of the cold air flow. For example, under certain working conditions, the hot air drops from to, with a drop amplitude of, while the cold air can rise fromto , with a rise amplitude of.

Sebelumnya

3—16 Briefly describe the classification and basic structure of safety valves.

Seterusnya

8-29 What is the effect of the amount of refrigerant filling on the dryer?

DIVERSITY OF EXPLORATION

OUTDOOR SCENE

However, those with sealed components, including motors, controllers, and connectors, can also be operated outdoors. Performance IC forklifts tend to be utilized in heavy-duty applications, such as brick and lumber yards, where larger capacity and performance is required to move the heavy loads.