2. When the well-isolated office room is entered in the summer, it is seen that the temperature of the room is 35 °C. After operating the air conditioner, the temperature of the room becomes 22 °C within At minutes. The coefficient of performance of the air conditioning system is 2.5, a) find the internal energy changing in the room and b) calculate the electrical power consumed by the system. Assume that the whole mass inside the room is equivalent to 700 kg of air. Take Cy = 0.72 kJ / kg°C, C, = 1.0 kJ / kg°C for air. Use the below table for At value.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
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The number is 9

thermodynamics 

2. When the well-isolated office room is entered in the summer, it is seen that the temperature of the room is
35 °C. After operating the air conditioner, the temperature of the room becomes 22 °C within At minutes. The
coefficient of performance of the air conditioning system is 2.5, a) find the internal energy changing in the room
and b) calculate the electrical power consumed by the system. Assume that the whole mass inside the room is
equivalent to 700 kg of air. Take C = 0.72 kJ / kg°C, C, = 1.0 kJ / kg°C for air. Use the below table for At value.
Last one digit
of your student
number
At
Win
(minutes)
15
1
14
A/C
35 °C
13
12
11
22 °C
10
6.
9.
7
8
7
9.
Transcribed Image Text:2. When the well-isolated office room is entered in the summer, it is seen that the temperature of the room is 35 °C. After operating the air conditioner, the temperature of the room becomes 22 °C within At minutes. The coefficient of performance of the air conditioning system is 2.5, a) find the internal energy changing in the room and b) calculate the electrical power consumed by the system. Assume that the whole mass inside the room is equivalent to 700 kg of air. Take C = 0.72 kJ / kg°C, C, = 1.0 kJ / kg°C for air. Use the below table for At value. Last one digit of your student number At Win (minutes) 15 1 14 A/C 35 °C 13 12 11 22 °C 10 6. 9. 7 8 7 9.
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