B- A Blood warming device contains a 20 mm diameter copper pipe is used to carry warm water, the external surface of the pipe is subjected to convective heated transfer coefficient of he= 6 W/m² K, find the heat loss by convection per meter length of the pipe when the external surface temperature is 40 °C and the surrounding are at 20 °C.?

Q: 2. Aluminum fins of triangular profile are attached to a plane wall whose surface temperature is…

A: Wall surface temperature = 250°C Fin base thickness = 2 mm Length of fin = 6 mm Ambient air…

Q: The thermal conductivity of a 2-mm-thick layer of skin is 1.5 J/s m.K. The temperature at the inside…

A:

Q: A duct has a cross sectional area as shown below is used to carry heated water, the external surface…

A: The rate of heat loss by convection and radiation is to be calculated.

Q: Q3. A 3em diameter tube has circumferential fins of rectangular profile. The fins are constructed of…

A: Given data: Diameter of tube=3cm Thickness=2mm Length of fin=20mm Tube wall temperature=250oC…

Q: 6. In a long rectangle fin, its material has thermal conductivity of 200 w/ m.K and is subjected to…

A:

Q: a) Identify whether the following statements are true or false. Justify your answer with a proof or…

A:

Q: 4 The rear window of an automobile is defogged by attach- ing a thin, transparent, film-type heating…

A:

Q: A cylindrical liquid nitrogen tank of 25 cm inside diameter, 2.5 cm thickness and l m height having…

A:

Q: A square pin fin (w-0.6 mm, L-33 mm) is attached to hot surface [87 mm * 69 mm] Ts= 179°C with…

A: A square pin fin is attached to the hot surface.  Area of the hot surface…

Q: Consider a 1.2-m-high and 2-m-wide glass window whose thickness is 6 mm and thermal conductivity is…

A:

Q: Q3. The surface temperature of a very long ród 8 millt ill diameter is exposed to ambient air at…

A:

Q: An experiment to measure the thermal conductivity of food formulations was carried out by measuring…

A:

Q: In this question .. how to get the*** surface area ****of the shape attached  we should use area or…

A:

Q: Q2) Vapor at 225°C passes inside a stainless steel tube with length of (L-1m) and thermal…

A: Given data, Inside temperature of vapor, T1=225°C Length of the tube, L=1 m Inner diameter of the…

Q: 1-128 A thin metal plate is insulated on the back and ex- posed to solar radiation on the front…

A: Given  Solar radiation incident on plate = 700 w/m2 Absorptivity of plate = 0.7 Temperature of…

Q: A 25 mm diameter copper pipe is used to carry heated water, the external surface of the pipe is…

A: Heat lost by radiation is to be calculated.

Q: ure of wire Vansfer - . 2) A carbon steel (K-54 W/mK) rod with a cross section of an equilateral…

A:

Q: The outer surfaces of the plane composite wall (A, B and C) are exposed to a fluid at 25oC and a…

A: The heat flow diagram of the system is shown below

Q: Cylindrical surface multilayer Problem: A steam pipe line with inside diameter of 150 mm and outside…

A: From the given diameter we will obtain three radii and name them accordingly. The temperatures are…

Q: A harizantal tube carrying hat water has a surface temperature of 355.4 K and an outside diameter of…

A: Given data: Surface temperature of pipe = 355.4 K Outside diameter of pipe = 25.4 mm Room…

Q: a hot furnace consisting of three layers of wall in which first layer is made up of insulation brick…

A: Heat transfer is taking place by the mode of conduction and convection as well. Conduction occurs…

Q: A loaf of bread having a surface temperature of 373 K is being baked in an oven whose walls and the…

A: given Temperature of body Tb=373 K Temperature of the surrounding Ts=477.4 K Emissivity e=0.85…

Q: A 20 mm diameter copper pipe is used to carry heated water, the external surface of the pipe is…

A:

Q: Q4: A hot surface at 100°C is to be cooled by attaching 16 number, 3-cm-long, 0.25-cm- diameter…

A:

Q: Problem 1 A concrete wall (plane wall) of 20-cm-thick, is subjected to convection on both sides. In…

A:

Q: b) A heated sphere of radius R is placed in a large amount of stagnant fluid. Consider the heat…

A: Given:The temperature at the share is constant,So, at r=R, T=TR, and throughout the liquid it…

Q: 6.32- Consider a wall-mounted power transistor that dissipates 0.18W of power in an environment at…

A:

Q: A hot surface at 150°C is to be cooled by attaching 4-cm-long. 0.3– cm-diameter aluminum pin fins (k…

A: Given:Temperature of surface=1500C=423 KArea=4 m2Surrounding temperature=250C=298 KHeat transfer…

Q: A 5 cm thick steel pipe, 1.0 m long, with an internal diameter of 8 cm is covered with 4 cm thick…

A:

Q: 400 circumferential fins of rectangular profile (k = 386 W/m °C) are installed on a tube having a…

A:

Q: cm Hot air Lütfen birini seçin: O A. 81.91 W/m O B. 116.56 W/m O C. 47.26 W/m O D. 163.82 W/m

A: A rectangular duct shown in the figure  find-heat loss to the quiescent air for a unit length of the…

Q: A new concrete driveway has been cured and is subsequently being cooled by spraying 20C water on the…

A: Thermal diffusivity: In heat transfer, thermal diffusivity is defined as the thermal conductivity…

Q: A circumferential copper fins (1.5 cm long and 3mm thick) of rectangular profile are mounted on a…

A:

Q: coefficient (h). Dreive the critical insulation thickness and explaine the effect of re on the rate…

A:

Q: A gas nside a 25in steel pipe. kness covers the steel pipe. The convective heat-transfer coefficient…

A:

Q: For the above left surface of the copper plate (k = 400 W/m C) the surface absorbs heat flux from…

A: Here copper plate is kept in air for heat transfer. It is given that left surface of the copper…

Q: Q1) Calculate the heat transfer rate from a single-plane glass window with an inside surface…

A: Given: Inside temperautre of glass window is Ti = 35oC The temperature at the outside of the glass…