An egg with mass 0.0889kg is initially at a uniform temperature of 8°C and is dropped into boiling water at 97°C. The specific heat of the egg is 3.32 kJ/kg.°C. Determine: (a) The amount of heat transfer to the egg by the time the temperature of the egg rises to 70°C. (b) The entropy change of egg in (a). (c) The amount of entropy generation associated with this heat transfer process (to determine entropy generation, we look at extended system that includes the egg and its immediate surroundings). Hint: We worked on similar example 7-21 (liquid-vapor mixture) in class. It will be helpful to study example 7-19 (solid) before starting this problem.

An egg with mass 0.0889kg is initially at a uniform temperature of 8°C and is dropped into boiling water at 97°C. The specific heat of the egg is 3.32 kJ/kg.°C. Determine: (a) The amount of heat transfer to the egg by the time the temperature of the egg rises to 70°C. (b) The entropy change of egg in (a). (c) The amount of entropy generation associated with this heat transfer process (to determine entropy generation, we look at extended system that includes the egg and its immediate surroundings). Hint: We worked on similar example 7-21 (liquid-vapor mixture) in class. It will be helpful to study example 7-19 (solid) before starting this problem.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

A large, insulated tank of contains 55 liters of water at a temperature of 20°C. You drop in an uninsulated but water-tight plastic bag (itself of negligible mass) containing 30 g of ice at a temperature of 0°C. This ice melts completely and comes into thermal equilibrium with the water in the tank. (a) What is the heat that flows into the contents of the bag? (b) What is the change in entropy of the water in the tank? (Hint: Will thẹ water temperature change by a measurable amount?) (c) What is the change of entropy of the entire system of the water and the contents of the bag? (d) What is the change in entropy of the contents of the bag? 3. One mole of gas undergoes the cycle shown in the p-V diagram below. Po MacBook Air Pressure
A piston-cylinder assembly contains 5 kg of saturated water vapor at a pressure of 3 MPa. At the end of the change of State, heat is given out of the cylinder at constant pressure until the water vapor is completely condensed, so that the liquid remains saturated at a pressure of 3 MPa in the wipe - dirde. During this state change, what happens to the fog - min entropy change?(a) 0 kJ / K (d) -17.7 kJ/K(b) - 3.5 kJ / K (e) -19.5 kJ/K(c) -12.5 kJ / K
Water at 95°c having mass of 45 kg is filled in a container and is placed in well-insulated room. Heat transfer takes place between water and air in room till thermal equilibrium is established. Entropy generation will be: - Vair = 90m³, Tair = 12°C, P = 101.3kPa, CW = 4.18 kJ/kg- %3D K, Cp = 1.005 kJ/K A. 2.89 kJ/K В. 13.12 kJ/К C. 14.86 kJ/K D. 1.74 kJ/K
Question 1 0.2804 kg of nitrogen, originally in a cylinder at 200 kPa and 32 oC, is to be compressed polytropically (PVn = C) to a final pressure of 1380 kPa. The volume compression ratio is 5:1. For nitrogen, R = 297 J/kg.K and  = 1.41. Calculate:(a) The value of the index n(b) The work done during compression(c) The change in internal energy(d) The change in entrop
Initially, there is 2 kg of liquid water at 80°C in a teapot. It was observed that the water temperature decreased by 40°C after a while by leaving the teapot in the environment at 20°C. The outdoor environment is very large and the temperature variation is negligible. Paying attention to the signs; a) Absolute value of heat transfer from the kettle to the surrounding environment (kj)b) Entropy change of the water in the teapot during the process (paying attention to the sign) (kj/K) c) The entropy change amount of the ambient air during the process (paying attention to the sign) (kj/K)
1kg of liquid subcooled water at 90°C is left to cool down at a LARGE room at 25°C until thermodynamic equilibrium is reached. Calculate the entropy generation during the process. (Include the units) Answer:
We take a 33 kg chunk of ice (Temp is 0°C) and submerge it in an isolated container. This container has 6 kg of water, and the water is 7°C. Answer the following: 1) How much ice from the block melts (in grams)? 2) What is the change in entropy for the entire system?
A 4-kg steel rod 873°C (specific heat= 0.85kJ/kg-K) is annealed in a cylindrical tank 3B0 kg of water originally at 20°C during a heat-treating process. What is the closest approximation to the overall entropy change of the system after annealing?
In a system, 2.5 kg of air at 350 0C expands isothermally behind a piston in a cylinder until the volume has doubled. The air is then compressed at constant pressure until the original volume has been reached. Take the specific heat at constant pressure and volume as 1.006 and 1.717 kJ/kg K, respectively. calculate the isothermal change of entropy and calculate the isobaric change of entropy and the value of change of entropy to 2 decimal place.
A 0.59 kg steel (c = 0.55 kJ/kg K) rivet cools from 1,424 C to 580 C upon being installed in a riveted structure. The entropy change in kJ/K of this rivet is.
In an experiment , a certain amount of air is heated at constant pressure from 1,7 cubic meters,20 degrees celsius and 97 KPa to 404 degrees celsius. It is then cooled at constant volume back to its initial temperature.Take specific heat at constant pressure and constant volume for air as 1,005 KJ/kg K and 0,717 KJ/kg K repectively. Calculate: 1. the change specific entropy in the cooling process in 1 decimal place and SI unit 2.the change specific entropy in the constant pressure process in 1 decimal place ans SI unit
A 2.18 kg of air at 22.89 C underwent an isobaric process wherein its initial volume of 1.64 m3 was doubled. Determine the change in entropy (kJ/K) of the system. Consider the individual gas constant, specific heat at constant pressure, and specific heat ratio of air as 0.287 kJ/kg-K, 1.00 kJ/kg-K, and 1.4 respectively.