a- Alpha decay b-enrichment c-parasitic absorption 3- The reactor that use intermediate heat exchanger where reactor coo

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A Alpha Decay B Enrichment C Parasitic Absorption 3 The Reactor That Use Intermediate Heat Exchanger Where Reactor Coo 1 (164.95 KiB) Viewed 33 times

a- Alpha decay b-enrichment c-parasitic absorption 3- The reactor that use intermediate heat exchanger where reactor coolant transport heat generated in reactor to steam generator is called: a- direct cycle reactor b- preheat cycle reactor c- indirect cycle reactor 4- The probability of neutron capture leading to fission is called: a- Uranium fission. b- fission cross section c- Neutron cycle 5- A chain nuclear reaction process is achieved, so the process must exhibit a- fast neutrons b-an economy of neutrons c-thermalrieutrons 6- In the CANDU-PHW, A separate auxiliary circuit is employed : a- To circulate the heavy water moderator through external heat exchanger b- To circulate the coolant through external heat exchanger c- To circulate fed water the through external heat exchanger Group B: Answer one questions only. 25 Marks Q4:A- a cylindrical fuel rod consist of a fuel region of diameter (10mm). If the temperature at the center line of the fuel is (1800°C) and the heat generation rate is (q///=4x108 W/m³). 1- Find the temperature distribution along the radial direction of the fuel meat. Assume steady state one dimensional heat flow PC. T(r) 3²T(r) 1 JT (r) q!!! + + = 0 + Ər² r Ər at 2- Calculate the temperature at the surface of the fuel. Take the average thermal conductivity of the oxide fuel to be (1.9 W/m °C). 3- Calculate the temperature distribution along the radius of the fuel meat 4- Draw the temperature distribution along the radius of the fuel meat Q5- A nuclear reactor has a core of height (H-3.8 m), made up of vertical rode. The coolant flows upwards per element is (m = 1.22 x 10³kg/hr). At central plane (z=0), the maximum heat production per unit volume is q. If the heat generation rate per unit volume is : ΠΖ 9 (z) = qö COS- H 1- Find the steady state axial variation of coolant temperature T, (z). 2- Find the outlet bulk coolant temperature To Take the: 1- Coolant inlet temperature (TFin-450°C) 2- Maximum heat generation q = (4.2E+8 W/m³). 3- Fuel diameter (D=10mm) 4- Specific heat of the coolant (cp= 1.3 J/g°C) 3- Calculate the bulk coolant temperature distribution along the length of the reactor core 4- Draw the bulk coolant temperature distribution along the length of the reactor core. Note: assume any value you need. Good Luck