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23 Nov 2019
Where:
Q is the amount of energy added (joules)
M is the mass of the fluid (kg)
C (subscript p) is the heat capacity of the fluid (joules/kg/K),and
Delta T is the change in temperature (K or C degrees)
A garage (24 ft x 24 ft x 10 ft) is illuminated by (6) 60 wattincandescent bulbs. It is estimated that 90% of the energy to anincandescent bulb is dissipated as heat. If the bulbs are left onfor 3 hours, how much would the temperature in the garage increasebecause of the light bulbs (assuming no energy losses).
Here is some potentially useful information:
Air density (approximate): 1.2 kg/m cubed
Air heat capacity (approximate): 1000 joules/kg?K
3.28 ft = 1 m
Where:
Q is the amount of energy added (joules)
M is the mass of the fluid (kg)
C (subscript p) is the heat capacity of the fluid (joules/kg/K),and
Delta T is the change in temperature (K or C degrees)
A garage (24 ft x 24 ft x 10 ft) is illuminated by (6) 60 wattincandescent bulbs. It is estimated that 90% of the energy to anincandescent bulb is dissipated as heat. If the bulbs are left onfor 3 hours, how much would the temperature in the garage increasebecause of the light bulbs (assuming no energy losses).
Here is some potentially useful information:
Air density (approximate): 1.2 kg/m cubed
Air heat capacity (approximate): 1000 joules/kg?K
3.28 ft = 1 m
Nestor RutherfordLv2
12 Jan 2019
