3) Calculate the thermal diffusion coefficient and diffusion length of heavy water in a CANDU reactor....
2. Compute the thermal neutron diffusion coefficient and the extrapolation length for water and carbon.
A BWR reactor operates at a thermal power of 1500 MWt. Water enters the bottom of the reactor core at 280 °C, and passes through the core at a flow rate of 6000 kg/s. the reactor operates at pressure of 10 MPa. Calculate the steam flow rate produced in the reactor.
15. What is the diffusion coefficient (m/s) in water at 25°C of a bovine pancreas ribonuclease (an enzyme that digests RNA) whose molecular weight is 1.369x109 and which is spherical?, Assuming the protein is an unhydrated sphere and its density is 1.414 g/cm'. The viscosity of water is 10- Pas. [Hint: Calculate the radius of the protein and use the Einstein relation to estimate the diffusion coefficient.] (10 pts)
At 298 K and 1 bar pressure, the density of water is 0.9970 g⋅cm−3, the coefficient of thermal expansion, is 2.07×10−4 K−1, and CP,m=75.3 J⋅K−1⋅mol−1. Part A: If the temperature of 336 g of water is increased by 27.9 K, calculate w Part B: If the temperature of 336 g of water is increased by 27.9 K, calculate q. Part C: If the temperature of 336 g of water is increased by 27.9 K, calculate ΔH. Part D: If the...
Question 5. A bare spherical reactor of radius R- 100 cm has a neutron flux profile of 1x1016 . .??? ) ? - sin(-n = (r) The diffusion coefficient is D= 1 cm. Calculate the neutron flux and neutron current density at the midway (r-50 cm) of the reactor, respectively i tha mact commonlu used material inside a thermal nuclear reactor
A nuclear power plant based on the Rankine cycle operates with a boiling-water reactor to develop net cycle power of 3 MW. Steam exits the reactor core at 100 bar, 52O degree C and expands through the turbine to the condenser pressure of 1 bar. Saturated liquid exits the condenser and is pumped to the reactor pressure of l00 bar. Isentropic efficiencies of the turbine and pump are 81% and 78%, respectively. Cooling water enters the condenser at 15 degree...
2) Calculate the diffusion coefficient for Ni diffusing in Cu as the temperature approaches the melting temperature of Cu
The linear coefficient of thermal expansion for water at 20oC is 69 x 10-6 K -1 . What is the magnitude of the percentage change in density of 1 m3 of water when it is heated from 20oC to 21oC? Density of water = 1000 kgm-3.
4.1 Calculate the length of the turbulent diffusion flame formed when pure methane is released at high pressure through a nozzle 0.1 m in diameter. Assume that the flame temperature for methane is 1875°C (Lewis and von Elbe, 1987) and the ambient temperature is 20°C. What would the length be if the nozzle fluid consisted of 50% methane in air?
Derive a relation between the diffusion coefficient (D) and pressure and temperature for an ideal gas. Using this relation, calculate the percentage of change in D for a given ideal gas if temperature is increased by 40% in a constant-volume process.