A hot fluid is placed inside a container and the fluid has a convection W coefficient of 200 m2-K°. Solve for the heat transferred per sq m of contact with the container if the fluid is at 100C while the container is at 40C
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- solve step by step and correctly. A family enters a winter vacation cabin has been unheated for such a long time the interior temperature is the same as the outside temperature (00C). The cabin consists of a single room of floor area 4m by 4m and height 3m. The room contains one 2kW electric heater. Assuming that the room is perfectly airtight and that all the heat from the electric heater is absorbed by the air, none escaping through the walls or being absorbed by the furnishing, how long after the heater is turned on will the temperature reach the comfort level of 240C.An AISI stainless steel spherical canister is bath-cooled to store chemicals. The properties of the canister and chemicals are illustrated in the figure below. The inner wall heat flux is qi" = 10 kW/m2. a) Determine the initial rate of change of the canister temperature at the outer wall b) Determine the steady-state inner and outer wall temperaturesCalculate the specific heat capacity of 10 000 kg of sea water if the rise in temperature is 0.00255 ℃ and heat supplied is 100 000 J
- Hi, can you help me with the following problem? A thermally insulated tank of water 2 m x 2 m, depth 1 m is stirred with a paddle for threehours. If the paddle is driven by a motor whose shaft power is 8 kW determine the rate ofchange of temperature in degrees C per hr and the increase in temperature of the water.The specific heat of water is 4200 J/kgC. Identify a system and start your analysis from anappropriate form of the Fist Law of ThermodynamicsI want the calculation for this expiremnt Note: the unit of thermal conductivity w/m.kheat capacity of ifhe flüid at constant vofume and process, the fluid loses 500 kJ of heat, and the paddle wheel does 100 kJ of work on e respectively, and AT is the temperature difference during the process. paddle wheel. Initially, the internal energy of the fluid is 800 kJ. During the cooling Example 3-1: A rigid tank contains a hot fluid that is cooled while being stirred by a the fluid Determine the final internal energy of the fluid. Neglect the energy stored in the Qout = 500 kJ paddle wheel. Wahin = 100 kJ Solution : A fluid in a rigid tank looses heat U= 800 kJ U = ? while being stirred. The final internal energy Fluid of the fluid is to be determined. Assumptions :
- Q2) A plate having a thickness of 4.0 mm has an internal heat generation of 100MW/m and a thermal conductivity of 50 W/m'C. One side of the plate is insulated and the other side is maintained at 100 C. Calculate the maximum temperature in the plate.A pressure cooker cooks a lot faster than an ordinary pan by maintaining a higher pressure and temperature inside. The lid of a pressure cooker is well sealed, and steam can escape only through an opening in the middle of the lid. The pressure relief valve consists of a spring-loaded disk that is positioned over this opening. Consider that a certain portion of a pressure cooker is initially filled with water and put on top of a stove (State - 1). Heat is added just until the pressure relief valve opens (State 2). Heat continues to be added until all of the liquid disappears (State 3). Using the knowledge that you learned in the Thermodynamics-I Course, analyze the operation of this pressure cooker thermodynamically (i.e. find the intensive properties of water such as temperature, pressure and quality, mass of liquid water in the cooker, mass of water vapor that has passed through the pressure relief valve, and time passed for various stages of its operation). Operation and design…A pressure cooker cooks a lot faster than an ordinary pan by maintaining a higher pressure and temperature inside. The lid of a pressure cooker is well sealed, and steam can escape only through an opening in the middle of the lid. The pressure relief valve consists of a spring-loaded disk that is positioned over this opening.Consider that a certain portion of a pressure cooker is initially filled with water and put on top of a stove (State - 1). Heat is added just until the pressure relief valve opens (State 2). Heat continues to be added until all of the liquid disappears (State 3).Using the knowledge that you learned in the Thermodynamics-I Course, analyze the operation of this pressure cooker thermodynamically (i.e. find the intensive properties of water such as temperature, pressure and quality, mass of liquid water in the cooker, mass of water vapor that has passed through the pressure relief valve, and time passed for various stages of its operation). Operation and design…
- A pressure cooker cooks a lot faster than an ordinary pan by maintaining a higher pressure and temperature inside. The lid of a pressure cooker is well sealed, and steam can escape only through an opening in the middle of the lid. The pressure relief valve consists of a spring-loaded disk that is positioned over this opening. Consider that a certain portion of a pressure cooker is initially filled with water and put on top of a stove (State - 1). Heat is added just until the pressure relief valve opens (State 2). Heat continues to be added until all of the liquid disappears (State 3).On a winters day the outside temperature of a 15 inch thick concrete wall is -25F, the wall is 16 ft long and 10 ft high. How manu BTU are required to keep the inside of the wall at 75F? Assume walls thermal conductivity is 0.8BTU/h ft F. Show detailed solutionsQ4/ A room on the second floor of a house with a balcony has a door. The door made of teak (wood) and it contains a large sheet of glass (outside winter type) in the middle and constitutes 80% of the area of the door. Door thickness is 40 mm and the temperature in the room 25. °C when the temperature is in the balcony 8 °C. Calculate the rate of heat loss from the room to the balcony through the door. The door dimensions 2m x 1m. Assume Inside and outside still air thermal resistance f= 8.29 W/m2 °C and f. 34.1 W/m2 °C respectively