All of the following are examples of ways to improve energy efficiency of heating systems, except
a. closing off rooms that aren’t in use.
b. frequently cleaning the furnace filter.
c. fixing cracks in the walls and floor.
d. opening the front door in winter to filter and clean warm air.
Answers: 3
Physics, 22.06.2019 23:40, Demondevilg
Along wire of diameter 1 mm is submerged in an oil bath of temperature ∞ 31°c. the wire has an electrical resistance per unit length of 0.01 ω/m. if a current of 103 a flows through the wire and the convection coefficient is 500 w/m2·k, what is the steady-state temperature of the wire? from the time the current is applied, how long does it take for the wire to reach a temperature that is within 1°c of the steady-state value? the properties of the wire are 8000 kg/m3, 500 j/kg·k, and 20 w/m·k.
Answers: 3
All of the following are examples of ways to improve energy efficiency of heating systems, except
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