تم الحل ✓
categoryالكيمياء
schoolبكالوريوس
event_available2026-07-15
السؤال
Transcribed Image Text:
A Thomas flowmeter is a device in which heat is transferred at a measured rate from an electric coil to a flowing fluid, and the flow
rate of the stream is calculated from the measured increase of the fluid temperature. Suppose a device of this sort is inserted in a
stream of nitrogen, the current through the heating coil is adjusted until the wattmeter reads 1.75 kW, and the stream temperature
goes from 35.0°C and 110 kPa before the heater to 41.2°C and 110 kPa after the heater.
If the specific enthalpy of nitrogen is given by the formula
Ĥ (kJ/kg) = 1.04 (T(°C) - 25.0)
what is the volumetric flow rate of the gas (L/s) upstream of the heater (i.e. at 35.0°C and 110 kPa)?
i
!
L/s
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