please answer both. thanks! Question 13 1 pts How much heat is transferred in 12 minutes...
Question 3 34 pts ro 1 ri = 0.05m A pipe with surface temperature T1 - 458 K is wrapped with 0.04 m of glass fiber pipe insulation. The outer surface temperature of the insulation, T2 is equal to 347 K and its emissivity is equal to 0.68. The insulation is also subject to natural convection with a bulk fluid temperature of 298 K and h = 4 W/m2-K. For a pipe length of 100 m, and assuming that the...
ASSIGNMENT 1 BMM35131920/1 QUESTION 3 [10 Marks] a) Briefly discuss the following terms in heat transfer: i. Blackbody ii. Absorptivity iii. Convection iv. Specific heat v. Thermal conductivity (5 Marks) b) An industrial galvanized pipe (Figure Q3) that carries SiO2 nanofluid as cooling liquid passes through a factory in which the air is at 27°C. The outside diameter of the pipe is 75 mm, and its surface temperature and emissivity are 200 °C and 0.8, respectively. If the coefficient associated...
please answer all parts 1- (5 ) Consider a glass window (1mx1m) with a thickness of 10 mm, thermal conductivity k = 1.4 W/m . °C, and emissivity 1. The room and the walls that face the window are maintained at 20°C, and the outside air temperature is 10 °C and the outside surrounding temperature is 5 °C, with no winds. Following is a solution for a similar problem but conditions are different; understand this solution before your solve the...
CAN YOU PLEASE ANSWER question B a) A company is redesigning its parallel-flow heat exchanger of length 1 to increase its heat transfer An end view of the unit is shown in the Figure below. There are certain limitations on the design problem. The smallest available conducting tube has a radius of 0.5 cm, and all tubes must be of the same size. Further, the total cross-sectional area of all of the tubes cannot exceed 2000 cm2 to ensure adequate...