Q1. Baffles advantage disadvantage
▶️ Advantage
. Provide support to tube bundles
. Proper distribution of flow
. Increase heat transfer coefficient
Disadvantage-
Increase pressure drop
Q2. How velocity increase with increase in tube pass.?
▶️
Q3. Counter or co which flow is better
▶️Counter is better because for same heat duty we have to use less area
Lmtd value for counter is always more than co
Q4. Why we use LMTD temp
▶️ temperature difference that takes place across the heat exchanger from entrance to exit is not linear. Therefore we use lmtd.
Q5. What is fin and it’s application
▶️fins are surfaces that extend from an object to increase the rate of heat transfer to or from the environment by increasing convection. .
Application- radiator in car
Heat exchanger
Graphic cards etc
Q6. Conduction convection and radiation which is most used in industry
▶️convection
Q 7. Which type of fluid is used in shell and tube
▶️In shell-condensing vapour
In tube – corrosive fluid
Cooling water
High pressure steam
Q 8. Type of valves
▶️ gate valve, globe valve, needle valve, check valve, butterfly valve, pinch valve etc.
Q9. Needle valve application
▶️They can be used for almost any clean gas or fluid. One of the most commonly used location for needle valves is to monitor gas flow, like propane, in a system. A propane needle valve
Q10. Which valve used for gases
▶️. Needle valve , gate valve, safety valve etc.