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.

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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

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 27RQ: How many Btu/h would be produced in a 12-kW electricheater?

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Question

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

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