Project Number 1: Parallel Flow Heat Exchanger Design In a concentric, two-pipe heat exchanger, the pressurized water with a flow rate of 12000 kg/h is heated from 35 °C to 120 °C with a flow of 5000 kg/h with superheated water (pressurized water) at 300 °C inlet temperature. The total heat transfer coefficient is 1500 W/m²K. Use TS 1996 Heat Exchangers standard for design. a) Find the required heat exchanger surface area and size to a suitable length. (Note: It is not practical over a length of 3 m, so it is manufactured in 2 or 3 m length and connected to each other.) b) Calculate the pressure drop. c) Find the insulation thickness to be made outside the body. d) By choosing a suitable thickness, draw a technical drawing of the heat exchanger designed in a series (one or all). Draw the technical drawing of the design in AUTOCAD or SolidWorks with the programs.

1:52 > le C:/Users/MEGA/Downloads/Cengel.%20Heat%20and%20mass%20Transfer%20Fundame FIGURE P11-79 11-80E A single-pass crossflow heat exchanger is used to cool jacket water (c, = 1.0 Btu/lbm-°F) of a diesel engine from 190°F to 140°F, using air (c, = 0.245 Btu/lbm-°F) with an inlet temperature of 90°F. Both airflow and water flow are unmixed. If the water and air mass flow rates are 92,000 lbm/h and 400,000 lbm/h, respectively, determine the log mean tem- perature difference for this heat exchanger. D Air flow - (unmixed) Water flow (unmixed) X FIGURE P11-80E 11-81 A single-pass crossflow heat exchanger with both flu- ids unmixed has water entering at 16°C and exiting at 33°C. while oil (c,= 1.93 kJ/kg-K and p=870 kg/m) flowing at 0.19 m³/min enters at 38°C and exits at 29°C. If the surface area of the heat exchanger is 20 m² determine the value of the f O 1 tu e 11 th ex 11 the ex 11 the flu the 11- rate flo ids the 11- excl be f 11- In o is no 11- exch cold 3

For a 50 m2 tubular heat exchanger operating under the following conditions:   Heat Capacity C, kW/K Inlet Temperatures °C Output Temperatures °C Hot Fluid 6 70 X Cold Fluid 3 30 60 a) Calculate the exit temperature of the hot fluid.b) Does the heat exchanger operate in reverse flow or parallel flow or is this not determined from the available information? Answer.c) Determine the total heat transfer coefficient.d) Calculate the efficiency of the heat exchanger.e) What would be the effectiveness of this heat exchanger if its length had been greatly increased? Answer.

Project 5: Automobile radiator, condenser, evaporator, air preheater, and cooling tower are common types of direct heat exchangers that also called recuperators. Recuperators may have different types based on the flow arrangement of the hot and cold fluid. Your role in a company that manufactures recuperators heat exchanger is to design a counter-flow recuperator (see Figure.6) that is used in heating, ventilation, and air conditioning (HVAC). Section.1: − Exhaust pipe is 88 ?? diameter. − Exhaust gas enters at 500??. − Water jacket is used and enters at 8??. − The surface heat coefficient of water and gas are ℎ????? = 300 ?/(?2.?) and ℎ??? = 1500 ?/(?2.?) , respectively. − Assume conduction transfer through wall is negligible. − The gas heat specific capacity is ?? is 1130 ?/(??.?). − The water heat specific capacity is ?? is 4190 ?/(??.?). − The flow rate of gas and water are 320 and 1500 ??/h, respectively. − The gas must be cooled to 100??. You need to design a counter-flow…

Refrigerant condenses in the tubes of a cross flow heat exchanger at 41 °C, 16.7 MJ/hr is rejected form the refrigerant by air "c= 1005 J/kg.K". Air enters at 24 °C and leaves at 37 ;c. What is heat transfer area of the refrigerant side (m) when the overall heat transfer coefficient refrigerant side on the is 151 W/m".°C? Hint use LMTD method and assume a correction coefficient of 100%

PLZ I want full answer with all solution steps A heat exchanger is to be designed to heat 32/68 mixture of ethylene glycol and water from 24 °C to 55 °C by a hot water stream from 79 °C to 42 °C. Flow rate of cold stream is 20 kg/s. Inlet pressure for both stream is 50 psi and the maximum pressure drop of 10 psi for cold stream and 8 psi for hot water are permissible. Report valid assumptions made for the design and give required justification. Estimate i) Heat Transfer, Corrected LMTD, ii) Tube bundle diameter (Using TEMA standards and Codes) and Tube cross sectional area iii) Heat transfer coefficient iv) Overall heat transfer coefficient v) Pressure Drop (Shell side & Tube Side) note: Assume any values for the missing data

1a.    Why does a “mixed” or “unmixed” fluid arrangement influence heat-exchanger performance?     with example

Table Q3 is given to collect the temperature of hot and cold water at the inlet and outlet positions in the laboratory using Tube Heat Exchanger (TD360a) by varying the cold-water flow rate to investigate the effect of cold-water flow rate on the heat exchanger’s performance.  (a) Complete all the output parameters indicated in the table given in Appendix 1.  (b) Draw the temperature (TH1, TH2, TC1 and TC2) on the vertical vs position (1, 2) on the horizontal axis for each flow and discuss the effect of cold water flow rate change on the exit temperature of both cold water and hot water.  (c) Draw the graph of Energy Balance Coefficient and Mean Temperature Efficiency on vertical axis and cold-water flow rate on horizontal axis. Discuss the effect of flow rate on the Energy Balance Coefficient and Mean Temperature Efficiency based on your finding.

3.21 You must cool 78 kg/min of a 60%-by-mass mixture of glycerin in wa- ter from 108°C to 50°C using cooling water available at 7°C. Design a one-shell-pass, two-tube-pass heat exchanger if U = 637 W/m²K. Which side should the water flow through? Explain any design decision you make and report the area, TH₂0out and any other relevant features.

2-A cross-flow heat exchanger with both fluids unmixed is used to heat water (c, = 4.18 kJ/kg•K) from 40°C to 80°C, flowing at the rate of 1.0kg/s. What is the overall heat transfer coefficient if hot engine oil (c, = 1.9 kJ/kg-K), flowing at the rate of 2.6 kg/s, enters at 100°C? The heat transfer area is 20 m2. (Note %3D that you can use either an effectiveness or an LMTD method. It would be wise to use both as a check.)