2,3) In a plunger cylinder device, 15 kg of air is heated from 25°C to 77°C by passing currentthrough a resistance heater inside the cylinder. The initial pressure in the cylinder is 300 kPaand in the process 60 kJ of heat is lost to the environment. Determine the electrical energysupplied during the process and express it in units of kWh.

Answered: Image /qna-images/answer/cef339dc-53d5-40e8-94ac-b9b330f6c496.jpg

2,3) In a plunger cylinder device, 15 kg of air is heated from 25°C to 77°C by passing curr through a resistance heater inside the cylinder. The initial pressure in the cylinder is 300 1 and in the process 60 kJ of heat is lost to the environment. Determine the electrical ene supplied during the process and express it in units of 1-Wh

2,3) In a plunger cylinder device, 15 kg of air is heated from 25°C to 77°C by passing curr through a resistance heater inside the cylinder. The initial pressure in the cylinder is 300 1 and in the process 60 kJ of heat is lost to the environment. Determine the electrical ene supplied during the process and express it in units of 1-Wh

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

Task 5A sample of gas is compressed by an average pressure of 2 atm which decrease its volume from400 cm 3to 200 cm 3. During the process, 10 J of heat is rejected to the surroundings. Explain and demonstrate the application of the first law of thermodynamics to this system and calculatethe change in energy of the system.
Q2: A vessel having a volume of 5 m³ contains 0.05 m³ of water and 4.95 m³ of saturated steam at 0.1 MPa. Heat is transferred until the vessel is filled with saturated steam. Determine the heat transfer for this process. Steam M op T₂-T₁).
Question No 4: A 4-kW resistance heater in a water heater runs for 2 hours to raise the water temperature to the desired level. Determine the amount of electric energy used in both kWh and kJ.
Please only answer number TWO.
An amount of gas inside an insulated vessel contained 45000J of internal energy. The gas expands until the internal energy reduced to 23kJ. Determined the work produced by the gas
A cylinder of gas has a frictionless but tightly sealed piston. 1250 J of heat is added to the gas. If the change in the internal energy of the gas is -520 J. How much work is done by the gas? O zero -730 J -1770 J O +1770 J O +730 J
A container maintains a constant pressure of 40800 Pa while changing to a volume of 791 liters. If 31080 J of work was done by the gas, what was the starting volume? *
Determine the mass of cooling water in kg/s for a water cooled air-conditioning system that uses R22 with condenser size of 253.7 kW Temperature at the cooling water loop are given as follows: 39.9 °C entering the cooling tower 32.6 °C at the inlet of the condenser 60.6 °C refrigerant temperature at the condenser Answer in three decimal places.
A cylinder fitted with a piston contains 4lbm of saturated vapor at a pressure of 150 psi. The steam is then heated until the temperature reaches 1000F. During this process the pressure remains constant. The Work done by the steam during this process, in Btu, is most likely: 85 350 5 1900
q0.5 liters of liquid water at 15°C is contained in a piston-cylinder with stops as shown. The piston has a mass of 320 kg and a diameter of 10cm. Stops in the cylinder are at 60cm The system is heated until the water reaches 300°C a.Find the thermal energy in kJ that is needed for this process. [1495kJ]
a) In order to sterilize a 45.0-g glass baby bottle, the temperature of the glass must be raised from 15.5°C to 95.0°C. How much heat transfer is required to sterilize the bottle? The specific heat of glass is 840 J/(kg · °C). J
3. A classroom that normally contains 40 people is to be air-conditioned with window air-conditioning units of 5-kW cooling capacity. A person at rest may be assumed to dissipate heat at a rate of about 360 kJ/h. There are 10 light bulbs in the room, each with a rating of 100 W. The rate of heat transfer to the classroom through the walls and the windows is estimated to be 15,000 kJ/h. If the room air is to be maintained at a constant temperature of 210C, determine the number of window air-conditioning units required. draw a figure also, and explain each step by step solution.