1. a) Parallel flow with A in tube and B in the shell side TOLL FREE FAX: 1-877-FCI-I123 Most shell and tube heat … Compact, Shell & Tube Heat Exchangers – MCQs with Answers 1. The drying occurs in the constant rate period with the drying rate as, Nc = 0.5 x 10⁻³ kg/m².s. d) 3-6 Shell and Tube View Answer, 5. 1. To practice all areas of Heat Transfer Operations, here is complete set of 1000+ Multiple Choice Questions and Answers. a) True a) True Heat Exchangers – MCQs with Answers 1. a) (UC-1 + Rd-1+ Rf)-1 Which type of Shell and tube heat exchanger does the below temperature plot correctly represent? Question: The Heat Exchanger Below Is Being Used To Heat Water (tube-side) With A Molten Salt (shell-side). b) False TEMA DESIGNATIONS. c) 2-4 Shell and Tube View Answer. They split all heat exchanger designs into three main parts: the front end header, the shell… Join our social networks below and stay updated with latest contests, videos, internships and jobs! There are many designs for these channels based on how you want the fluid to enter the heat exchanger (through the front channel) and how you want it to leave the heat exchanger (through the rear channel). In a shell and tube heat exchanger, the shell side fluid velocity can not be changed by changing the a) Tube layout b) Tube diameter c) Tube pitch d) No. Edmonton, Alberta c) Baffles are provided only to work as fins d) Fins increase necessary heat transfer area b) False The Molten Salt Is Flowing Through The Shell … c) One Shell and Four pass of the tube E-mail: sales@forgings-24-7.com, 937 Summerside Link SW c) 3 Most shell and tube heat exchangers are constructed of various grades of carbon steel but can be made of many different metals and alloys including copper, copper-nickel, stainless steel, and titanium (just to name a few). The boiling point of the solution is 110°C, the latent heat of vaporisation is 2100 kJ/kg and the specific heat of the solution is 4 kJ/kg.K. To understand the shell and tube heat exchanger’s design and operation, it is important to … The tube material is Cr alloy (kw = 42.7 W/mK). Telephone: (780) 905-6180 Rods and spacers hold the baffles together and maintain the spacing between them as the heat exchanger has designed. In an operation where we want to heat a stream of liquid by Steam, we have the option to use extended fins. The standard types of shell and tube heat exchangers are regulated by the Tubular Exchangers Manufacturers Association or TEMA. c) (UC-1 + Rd+ Rf-1) a) Partition of the Shell into two and four passes of the tube Participate in the Sanfoundry Certification contest to get free Certificate of Merit. Which of the following statements are incorrect about Baffles in a Shell and Tube HE? The convective heat transfer coefficient of the shell and tube heat exchanger is calculated based on the following correlation: (4) U = Q A × L M T D where, A is total heat transfer area, m 2, Q is heat transfer from hot stream into cold stream, W, LMTD is logarithmic mean temperature difference, K. (5) Q = V (ρ C p) n f (T h 1 − T h 2) where, V is volumetric flow rate, m 3 /hr, T h1, T h2 are inlet and outlet … The standard types of shell and tube heat exchangers are regulated by the Tubular Exchangers Manufacturers Association or TEMA. How many times do we have to calculate for Pressure drop in a Shell and Tube Heat Exchanger? View Answer, 11. a) If the fluid is gas then the gas side heat transfer coefficient is the lowest d) Baffles increase the overall heat transfer coefficient on the shell side View Answer, 9. d) Steam on the tube side with the fins on inner surface of the tube b) Extended fins are used on the shell side to increase the Heat Transfer coefficient TEMA DESIGNATIONS. What can we infer from the name 2-4 Shell and Tube Heat Exchanger? Assume The Heat Exchanger Is Long Enough That The Inlet And Outlet Regions Of The Tube Side Can Be Neglected. Feed water heater in which a stream of steam is directly mixed with cold water and the mixture leaves at uniform temperature d) Partition of the Shell into three four passes of the tube a) Baffles provide mechanical support to the tubes and help them to be in position c) Steam on the shell side with the fins on inner surface of the tube b) A miniature shell-and-tube heat exchanger is designed to cool engine oil in an engine with the engine coolant (50% ethylene glycol). For the calculation of Overall Heat transfer coefficient UD, for given fouling factor Rf and Dirt Factor Rd, which one of the following expressions do we use? d) Parallel flow with B in tube and A in the shell side Fqra cold viscous feed, backward feed gives __________ than forward feed. The interfacial area available for drying is 4 m²/1000 kg of dry solid. b) Baffles streamline the motion of the fluid in Shell side and hence decreases the turbulence Humble, Texas Sanfoundry Global Education & Learning Series – Heat Transfer Operations. Shell and Tube Heat Exchangers are not commonly used in industries because of their inability to handle high pressure and temperature. View Answer, 7. Some tubes might include fins in order to help expand the heat transfer surface area between the tubes and the surrounding fluid. Shell and Tube Heat Exchangers are not commonly … View Answer, 2. a. ahrabowiecky@forgedcomponents.com. Then which of the following is best suited? a) 1-2 Shell and Tube Most tubes used in shell and tube heat exchangers are between 5/8 inch to 1 inch, although other sizes are sometimes used depending on the particular situation. b) Steam on the tube side with the fins on outer surface of the tube d) 4 2) HEI standards (Heat Exchanger Institute, 1980) 3) API (American Petroleum Institute) 4) ASME (American Society of Mechanical Engineers) 4. Most of the time, this metal is steel, but other metals and alloys might be necessary if the shell is exposed to high temperatures or corrosive agents. The heat exchanger is said to be compact when its area density is a. equal to 700 m 2 / m 3 b. less than 700 m 2 / m 3 Where, ΔT 1 → the temperature difference between hot and cold fluids at one end of the heat exchanger ΔT 2 → the temperature difference between hot and cold fluids at the other end of the heat exchanger.. LMTD with the Correction factor. Baffles guide the tubes during the assembly process of a shell and tube heat exchanger and they support the tubes, prevent vibration, maintain the spacing between the tube inserted through the tube sheets, and direct the flow of fluid through the shell. Consider we have a 1-2 Shell and Tube Heat Exchanger with tube diameter 20mm and shell diameter 55mm, we have two fluids A&B, A is supply water and B is distilled water, we desire to have their flow rates as 15m3/s and 21m3/s respectively.