A completely closed room with dimensions A m in the figure is heated by a hot water radiator. The heat emitted by the radiator is B kJ / h and the heating is by natural convection. Heat loss from the room was determined as C kJ / h. The temperature of the room is from D oC to E oC a) Calculate the time it will take [seconds]. b) If the temperature of the water entering the heating system is F oC return G oC, the flow rate of the hot water circulating in the system is [kg / h]. Note: Air is the Perfect gas. Room pressure (100 kPa) does not change
A completely closed room with dimensions A m in the figure is heated by a hot water radiator. The heat emitted by the radiator is B kJ / h and the heating is by natural convection. Heat loss from the room was determined as C kJ / h. The temperature of the room is from D oC to E oC a) Calculate the time it will take [seconds]. b) If the temperature of the water entering the heating system is F oC return G oC, the flow rate of the hot water circulating in the system is [kg / h]. Note: Air is the Perfect gas. Room pressure (100 kPa) does not change
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
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A completely closed room with dimensions A m in the figure is heated by a hot water radiator. The heat emitted by the radiator is B kJ / h and the heating is by natural convection. Heat loss from the room was determined as C kJ / h. The temperature of the room is from D oC to E oC
a) Calculate the time it will take [seconds].
b) If the temperature of the water entering the heating system is F oC return G oC,
the flow rate of the hot water circulating in the system is [kg / h].
Note: Air is the Perfect gas. Room pressure (100 kPa) does not change
![C kJ/h
Room dimensions
A
Room
11340
6300
Heat from the radiator
B
hot water
Room heat loss
C
The first temperature of the room
B kJ/h
The final temperature of the room
E
25
Entering water temperature
F
80
Leaving water temperature
70](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd4c43bff-8049-4397-926f-b91c8dbe9c6f%2F1c5bedba-f24c-493b-9e84-b12b357a7439%2Fndcroyf_processed.png&w=3840&q=75)
Transcribed Image Text:C kJ/h
Room dimensions
A
Room
11340
6300
Heat from the radiator
B
hot water
Room heat loss
C
The first temperature of the room
B kJ/h
The final temperature of the room
E
25
Entering water temperature
F
80
Leaving water temperature
70
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