【Daily Question】Chemical Engineering Principles 245: Shell and Tube Condenser (November 26)
Thread Content
The Chemical Engineering Theory section is launching the \"One Question per Day\" campaign starting today, aimed at helping everyone reinforce their basic knowledge of chemical engineering. Subsequent series will include those on \"Principles of Chemical Engineering,\" \"Mass Transfer and Separation,\" \"Thermodynamics in Chemical Engineering,\" and \"Chemical Process Engineering.\" We hope you will give it your active support! Answers to the questions in the \"One Question per Day\" campaign can be viewed directly by replying, and this thread will be closed after 1 day ! Participation earns 3 wealth points, with an additional 3 wealth points for correct answers. Multiple-choice question: In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is also constant, then when the air flow rate increases: (1) The heat transfer coefficient K should A increase B decrease C remain basically unchanged ( ) (2) The air outlet temperature A increase B decrease C remain basically unchanged ( ) (3) The wall temperature A increase B slightly decrease C remain basically unchanged ( ) AAB
Multiple-choice question: In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is also constant, then when the air flow rate increases: (1) The heat transfer coefficient K should A increase B decrease C remain basically unchanged (A) (2) The air outlet temperature A increase B decrease C remain basically unchanged (A) (3) The wall temperature A increase B decrease slightly C remain basically unchanged (B)
In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is fixed, then when the air flow rate increases: (1) the heat transfer coefficient K A increases B decreases C remains essentially unchanged (A) (2) the air outlet temperature A increases B decreases C remains essentially unchanged (B) (3) the wall temperature A increases B decreases slightly C remains essentially unchanged (C)
(1) The heat transfer coefficient K should A increase B decrease C remain basically unchanged (A) (2) The air outlet temperature A increase B decrease C remain basically unchanged (B) (3) The wall temperature A increase B slightly decrease C remain basically unchanged (B)
In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is fixed, then when the air flow rate increases: (1) the heat transfer coefficient K remains essentially unchanged; (2) the air outlet temperature decreases; (3) the wall temperature also decreases slightly
1. A. --------------2. B. ------------------------3. B. ----------------
In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is fixed, then when the air flow rate increases: (1) the heat transfer coefficient K A increases B decreases C remains essentially unchanged (C: the heat transfer coefficient stays the same). (2) The air outlet temperature A increases B decreases C remains essentially unchanged (B: it decreases). (3) The wall temperature A increases B decreases slightly C remains essentially unchanged (C: it remains essentially the same)
In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is fixed, then when the air flow rate increases: (1) the heat transfer coefficient K A increases B decreases C remains essentially unchanged (A) (2) the air outlet temperature A increases B decreases C remains essentially unchanged (B) (3) the wall temperature A increases B decreases slightly C remains essentially unchanged (B)
In a shell-and-tube condenser, air flows inside the tubes while saturated water vapor flows between them. If the steam pressure remains constant and the air inlet temperature is fixed, then when the air flow rate increases: (1) the heat transfer coefficient K will A increase B decrease C remain essentially unchanged (A). (2) The air outlet temperature will A increase B decrease C remain essentially unchanged (B). (3) The wall temperature will A increase B decrease slightly C remain essentially unchanged (B)