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d.
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- 4. Show that the fraction, F, of the energy released from a supercritical chain reaction that originates in the final m generations of the chain is given approximately by F= 1 km provided the total number of generations is large.arrow_forwardPLEASE SOLVE STEP BY STEP WITHOUT ARTIFICIAL INTELLIGENCE OR CHATGPT I don't understand why you use chatgpt, if I wanted to I would do it myself, I need to learn from you, not from being a d amn robot. SOLVE BY HAND STEP BY STEP A solution containing 7.5% sulfuric acid by weight at 70 °F is concentrated to 45% by weight by evaporating water. The concentrated solution and the water vapor exit the evaporator at 170 °F and 1 atm. Calculate the rate at which heat must be transferred to the evaporator to process 1500 lbm/hr of the feed solution to the evaporator. It is recommended to use the enthalpy-concentration diagram for sulfuric acid from Chapter 8 of Felder's book or an enthalpy-concentration diagram for sulfuric acid found in another unit operations book or chemical engineering manual such as Perry's.arrow_forwardPLEASE SOLVE STEP BY STEP WITHOUT ARTIFICIAL INTELLIGENCE OR CHATGPT I don't understand why you use chatgpt, if I wanted to I would do it myself, I need to learn from you, not from being a d amn robot. SOLVE BY HAND STEP BY STEP Suppose that the system designed in problem 33 of the Thermodynamics II problem set from UAM-Azcapotzalco is relocated to another area near the sea, specifically, Ciudad del Carmen, Campeche. Recalculate the compressor-cooler system for the new environmental conditions. Make the considerations you deem logical in redesigning your system. Indicate the references or sources where you obtained your data.arrow_forward
- A process for the microbial synthesis of 1,3-propanediol ( 3 8 2 C H O ) uses an anaerobicfermenter with a selected strain of K. pneumoniae to convert glycerol ( 3 8 3 C H O ) to 1,3-propanediol and acetic acid ( 2 4 2 C H O ). All other byproducts are of negligible concentration.The fermentation and cell growth equation can be written:3 8 3 3 4 7 2 3 8 2 2 4 2 2 2 68 3 3 49 15 15 40 C H O NH C H O N C H O C H O CO H O + → + + + +The continuous fermentation process is set up at 37°C and atmospheric pressure.Anaerobic conditions are maintained by sparging the fermentation broth with N2 at aflowrate of 500 litres per minute. The medium, containing ammonia, is fed at 500 kg perhour, and has a composition of 14% (w/w) glycerol. Suppression of the side reactions isachieved by excess glycerol, so the liquid product contains 3% (w/w) unreacted glycerol.2a. Draw a process diagram. List all your assumptions necessary to write a materialbalance.(5 marks)2b. List your unknowns.(3 marks)2c. Write…arrow_forward8-4. A pressurized-water reactor generates 70 Mw(t) in the core. The coolant-moderator mass-flow rate is 107 lbm/hr. It enters the core at 490°F. Estimate the effective thermal- neutron fission cross section in the core.arrow_forwardQ/ 8-17 cylindrical reactor core is 4 ft in diameter and 4.8 ft height. The maximum neutron flux is 1013. The extrapolation length are 0.186 ft in the radial direction and 0.3 ft in the axial direction. The fuel is 20% enriched UO2.0= 500 b. Determine (a) The neutron flux at the upper and lower rims, and (b) the maximum heat generated in the fuel in [MeV/s cm³] and [Btu/hr ft³).arrow_forward
- LATIHAN 8.5-4. Concentration of NaOH Solution in Triple-Effect Evaporator. A forced-circulation triple-effect evaporator using forward feed is to be used to concentrate a 10 wt % NaOH solution entering at 37.8°C to 50%. The steam used enters at 58.6 kPa gage. The absolute pressure in the vapor space of the third effect is 6.76 kPa. The feed rate is 13 608 kg/h. The heat-transfer coefficients are U₁ = 6246, U2 = 3407, and U3 = 2271 W/m² K. All effects have the same area. Calculate the surface area and steam consumption. 8.5-1. Boiling Points in a Triple-Effect Evaporator. A solution with a negligible boiling- point rise is being evaporated in a triple-effect evaporator using saturated steam at 121.1°C (394.3 K). The pressure in the vapor of the last effect is 25.6 kPa abs. The heat-transfer coefficients are U₁ = 2840, U₂ = 1988, and U₁ = 1420 W/m² K and the areas are equal. Estimate the boiling point in each of the evaporators.arrow_forwardThe power generation unit in a plant uses a hot exhaust gas from another process to produce work. The gas enters at 10 bar and 350°C and exits at 1 bar and 40°C. The process produces a net amount of work equal to 4500 J/mol and it exchanges an unknown amount of heat with the surroundings. 1.1 Determine the amount of heat exchanged with the surroundings. Is this heat absorbed or rejected by the system? 1.2 Calculate the entropy change of the exhaust gas. 1.3 As a young and ambitious chemical engineer, you seek ways to improve the process. What is the maximum amount of work that you could extract from this system? Assume that the inlet and outlet conditions of the exhaust gas remain the same. Additional data: Assume the surroundings to be at the constant temperature of 298 K and the exhaust gas to be ideal with CP = 29.3 J/mol.Karrow_forwardLatihan mandiri Reaktor fluidisasi menggunakan katalis padat dengan diameter partikel 0,25 mm, rapat massa 1,50 g/ml, sperisitas 0,90. Pada kondisi unggun diam, porositas 0,35, tinggi unggun 2 m. Gas masuk dari bagian bawah reaktor pada suhu 600°C pada viskositas 0,025 CP serta rapat massa 0,22 lb/cuft. Pada fluidisasi minimum, porositas tercapai pada 0,45. Hitung Hitung a. Laju alir semu minimum (VM) gas masuk kolom fluidisasi ! b. Tinggi unggun jika Vo = 2 VM c. Pressure drop pada kondisi Vo = 2,5 VM < 1 m = 3,28084 ft 1 g/ml = 62,43 lbm/ft³ 1 cp gc = 6,7197 × 10-4 lbm/ft.s = 32,174 ft/s² =arrow_forward
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