subject
Physics, 07.12.2021 02:50 graceshort7orepzg

An engineered tissue system consists of a flat plate of cell mass immobilized on a scaffold measuring 5 cm in length, and is 0.5 cm thick. The bottom face of the scaffold is exposed to water and organic nutrients. The top face is exposed to flowing O2 gas to provide O2 for aerobic respiration. At present the specific oxygen consumption of the tissue mass is 0.5 mmol O2/cm3 cells-hr, and from respiration energetic, the energy released by respiration is 468 J/mmol O2 consumed. We are interested in using the flowing O2 gas at 1 atm to control the temperature at the surface of the tissue scaffold. The properties of O2 gas at 300 K are rho = 1.3 kg/m3, Cp = 920 J/kg · K, µ = 2.06 × 10-5 kg/m sec, and k = 0.027 W/m K. We are interested in determining the O2 flow rate necessary to keep the surface temperature within 10°C of the flowing gas temper ature (i. e., surface temperature below 310 K or 37°C). a. What is the Prandtl number (Pr) for the flowing fluid?
b. Based on the process energy balance and heat-transfer, what is the required heat transfer coefficient, h?
c. What is the Nusselt number, Nu?
d. The mean heat-transfer coefficient, h, is an integral averaged value obtained by integrating the local values of h(x) from x = 0 to x = L. If the O2 flow is assumed to be laminar (for flat plate, Re < 2 × 105), what is the needed convective heat-transfer correlation?
e. What are the required values for Reynolds number (Re) and fluid velocity, v[infinity]?

ansver
Answers: 1

Another question on Physics

question
Physics, 21.06.2019 15:30
The slope of a good speed time indicates ? a. velocity b. acceleration c. direction d. speed
Answers: 1
question
Physics, 22.06.2019 12:30
Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.
Answers: 1
question
Physics, 22.06.2019 16:30
If anyone who can me with this hw? i would really appreciate it
Answers: 2
question
Physics, 22.06.2019 18:30
Acar starts from rest at a stop sign and reaches a velocity of 25 m/s w in 4 seconds. determine the acceleration of the car. question 3 options: a) 6,25 m/s2 b)6.25 m/s c)100 m/s2 d)100 m/s
Answers: 1
You know the right answer?
An engineered tissue system consists of a flat plate of cell mass immobilized on a scaffold measurin...
Questions
question
Mathematics, 18.02.2022 18:10
question
Biology, 18.02.2022 18:10
question
Chemistry, 18.02.2022 18:10
question
Computers and Technology, 18.02.2022 18:10
Questions on the website: 13722367