A refrigerant of -12ºC to 35ºC flows inside a copper tubeof 8mm external diameter and walls...
A refrigerant of -12ºC to 35ºC flows inside a copper tubeof 8mm external diameter and walls of 1mm thickness. It has been suggested that to reduce heat loss to therefrigerant a foam insulation with an aluminizedexternal surface can be used. If the internal andexternal heat T coefficients are 300 and 5W/(m2K), respectively, and the air surrounding the tube is at20ºC; draw up a graph of the heat flow per metre that islost to the refrigerant in relation to the thickness of theinsulation. ¿ Should the insulation be used? The thermalconductivity of the insulator is 0. 035W/(mK).
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A refrigerant of -12ºC to 35ºC flows inside a copper tubeof 8mm external diameter and walls...
Please show every step clearly! Also, The blue is the answers, I simply want to check...
Please show every step clearly! Also, The blue is the answers, I
simply want to check my process.
3. A steel tube (k = 15 W/mK) has an inner diameter of 40 mm and a wall thickness of 5 mm. The temperatures of the fluid inside the tube and the ambient air are 5°C and 20 °C respectively, while the corresponding convection coefficients are 300 W/m2K and 5 W/m²K. Determine: 11.52 W/m a. The heat gain per unit length (W/m)...
An industrial freezer is designed to operate with an internal air temperature of -20 °C when...
An industrial freezer is designed to operate with an internal air temperature of -20 °C when the external air temperature is 25 °C and the internal and external heat transfer coefficients are 12 W/m2K and 8 W/m2.K respectively The walls of the freezer have a composite construction, comprising of an inner layer of plastic (k = 1 W/m•K, and thickness of 3 mm), and an outer layer of stainless steel (k = 16 W/mok, and thickness of 1 mm). Sandwiched...
The heat exchanger in a heat lung machine is constructed so that blood flows through an...
The heat exchanger in a heat lung machine is constructed so
that blood flows through an array of tubes controlled temperature
water circulated through an outer exterior shell.
e heat exchanger in a heat lung machine is constructed so that blood flows through an array of tubes with controlled temperature water circulated through an outer exterior shell. Although the temperature of the blood varies as it passed through the heat exchanger, during the cool down cycle when a patient is...
A spherical tank (inside diameter 950 mm, wall thickness 6 mm) made of cast iron (k...
A spherical tank (inside diameter 950 mm, wall thickness 6 mm) made of cast iron (k = 57 W m-1 K -1 ) is to be used to store a vapour/liquid mixture at 2 °C while it is waiting to be used in an industrial process. Calculate the percentage reduction in the rate of heat infiltration (compared to the case of no insulation) if the tank is covered in a 35 mm layer of insulation (k = 0.04 W m-1...
NE Steel tubes (k =35 W/m2.K) of 400-mm inner diameter and 30-mm wall thickness are used...
NE Steel tubes (k =35 W/m2.K) of 400-mm inner diameter and 30-mm wall thickness are used to route superheated steam from the boller to the turbine in a power plant. Safety and economic concerns make it practical to add a 200-mm layer of Insulation (k =0.1 W/mK) to each tube, which is wrapped in a thin sheet of aluminum with an emissivity e =0.15. The air (with a convective coefficient h =5 W/m2K) and wail temperatures of the plant are...
Will RATE!!! Calculate the tensile stress hoop and longitudinal developed in the walls of a cylindrical pressure vessel. The inside diameter is 18 inch. The wall thickness is k inch.The vessel...
Will RATE!!!
Calculate the tensile stress hoop and longitudinal developed in the walls of a cylindrical pressure vessel. The inside diameter is 18 inch. The wall thickness is k inch.The vessel is subjected to an internal gage pressure of 300 psi and a simultaneous external axial tensile load of 50,000 lb. 4.A V-belt with a groove angle 40 has a max belt tension 150 lb on the tight side and 75 lb on the loose side. If the coefficient of...
1. 1.08x106 grams/h of a superheated fluid flows through a pipe in a power plant. The...
1. 1.08x106 grams/h of a superheated fluid flows through a pipe in a power plant. The pipe is 1000 cm long, has an inner diameter of 0.05m and a wall thickness of 0.6 cm. The pipe has a thermal conductivity of 0.0017 kW/mK, and the inner pipe surface is at a uniform temperature of 393K. The temperature drop between the inlet and exit of the pipe is 7K, and the constant pressure specific heat of vapor is 2190 J/kgK. If...
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during...
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, =45 W/m K) has an inside diameter of D 150 mm and wall thickness t, = 20 mm while the outer steel pipe has an...
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during...
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe ks 45 W/m-K) has an inside diameter of Di,1 150 mm and wall thickness t = 20 mm while the outer steel pipe has an inside...
IF YOU CANNOT SOLVE THEM ALL THEN PLEASE DONT SOLVE ANY. A hollow aluminum sphere, with...
IF YOU CANNOT SOLVE THEM ALL THEN PLEASE DONT SOLVE ANY.
A hollow aluminum sphere, with an electrical heater in the center, is used in tests to determine the thermal conductivity of insulating materials. The inner and outer radii of the sphere are 0.15 and 0.18 m, respectively, and testing is done under steady-state conditions with the inner surface of the aluminum maintained at 250°C. In a particular test, a spherical shell of insulation is cast on the outer surface...
Please show every step clearly! Also, The blue is the answers, I
simply want to check my process.
3. A steel tube (k = 15 W/mK) has an inner diameter of 40 mm and a wall thickness of 5 mm. The temperatures of the fluid inside the tube and the ambient air are 5°C and 20 °C respectively, while the corresponding convection coefficients are 300 W/m2K and 5 W/m²K. Determine: 11.52 W/m a. The heat gain per unit length (W/m)...
An industrial freezer is designed to operate with an internal air temperature of -20 °C when the external air temperature is 25 °C and the internal and external heat transfer coefficients are 12 W/m2K and 8 W/m2.K respectively The walls of the freezer have a composite construction, comprising of an inner layer of plastic (k = 1 W/m•K, and thickness of 3 mm), and an outer layer of stainless steel (k = 16 W/mok, and thickness of 1 mm). Sandwiched...
The heat exchanger in a heat lung machine is constructed so
that blood flows through an array of tubes controlled temperature
water circulated through an outer exterior shell.
e heat exchanger in a heat lung machine is constructed so that blood flows through an array of tubes with controlled temperature water circulated through an outer exterior shell. Although the temperature of the blood varies as it passed through the heat exchanger, during the cool down cycle when a patient is...
NE Steel tubes (k =35 W/m2.K) of 400-mm inner diameter and 30-mm wall thickness are used to route superheated steam from the boller to the turbine in a power plant. Safety and economic concerns make it practical to add a 200-mm layer of Insulation (k =0.1 W/mK) to each tube, which is wrapped in a thin sheet of aluminum with an emissivity e =0.15. The air (with a convective coefficient h =5 W/m2K) and wail temperatures of the plant are...
Will RATE!!!
Calculate the tensile stress hoop and longitudinal developed in the walls of a cylindrical pressure vessel. The inside diameter is 18 inch. The wall thickness is k inch.The vessel is subjected to an internal gage pressure of 300 psi and a simultaneous external axial tensile load of 50,000 lb. 4.A V-belt with a groove angle 40 has a max belt tension 150 lb on the tight side and 75 lb on the loose side. If the coefficient of...
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe (k, =45 W/m K) has an inside diameter of D 150 mm and wall thickness t, = 20 mm while the outer steel pipe has an...
To maximize production and minimize pumping costs, crude oil is heated to reduce its viscosity during transportation from a production field. (1) Consider a pipe-in-pipe configuration consisting of concentric steel tubes with an intervening insulating material. The inner tube is used to transport warm crude oil through cold ocean water. The inner steel pipe ks 45 W/m-K) has an inside diameter of Di,1 150 mm and wall thickness t = 20 mm while the outer steel pipe has an inside...
IF YOU CANNOT SOLVE THEM ALL THEN PLEASE DONT SOLVE ANY.
A hollow aluminum sphere, with an electrical heater in the center, is used in tests to determine the thermal conductivity of insulating materials. The inner and outer radii of the sphere are 0.15 and 0.18 m, respectively, and testing is done under steady-state conditions with the inner surface of the aluminum maintained at 250°C. In a particular test, a spherical shell of insulation is cast on the outer surface...
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