Q2- Water flows inside a steel pipe with an ID of 2.5 cm. The wall thickness is 2 mm. and the convection coefficient on the inside is 100 Wm² C. The convection coefficient on the outside is 10 W/m C. The pipe is covered with a layer of asbestos, 1-determine the thickness of the asbestos layer at the critical insulation radius of the pipe. 2-calculate the change percent of heat transfer with and without the insulation. 3-commet on your results,

Solve correctly all subparts please. (Gpt/Ai answer not allowed)

SOLVE STEP BY STEP DONT USE CHATGPT There is a horizontal PVC pipe (k=0.16 W/m°C) with a diameter of 15 cm, a wall of 3 mm and a length of 8 m. The external surface of PVC is at 19 °C. Inside this pipe is placed a steel pipe (k=45 W/m.°C), 7 em in external diameter and 2 mm thick, also 8 m long, where saturated steam circulates at 0.38 m. /s and 1.3 atm pressure. The temperature of the steel is at the same temperature of the steam. The annular space between the two pipes is filled with static air. Determine the heat flow that occurs from the steam to the outside of the system.

A wall consists of a layer of wood and a layer of cork insulation of the same thickness. The temperature inside is 34.0°C, and the temperature outside is 0.0°C. The thermal conductivity of wood is 0.130 W/(m·K) and the thermal conductivity of cork is 0.0460 W/(m·K). A) What is the temperature at the interface between the wood and the cork if the cork is on the inside and the wood on the outside? in C  B) What is the temperature at the interface if the wood is on the inside and the cork is on the outside? in C C) It doesn’t matter whether the cork is placed on the inside or the outside of the wooden wall because the temperature at the interface differs for the two cases.the temperature at the interface differs for the two cases. the temperature at the interface is the same for the two cases.the temperature at the interface is the same for the two cases. the total thermal resistance is the same for the two cases.the total thermal resistance is the same for the two cases.…