CONCEPT:To keep the temperature of the room as CONSTANT, the heat loss MUST be equal to the total heat dissipated in the room.Amount of total heat generated in the room = Qrefri + Qheater + QTV + QfanCalculation:GIVEN:Qrefri = 250 W, Qheater = 1 kW = 1000 W, QTV = 120 W, Qfan = 50 WTotal power dissipated from the appliances = 250 + 1000 + 120 + 50 = 1420 W = 1420 J/s\( \Rightarrow {\rm{Heat\;loss}} = 1420~{\rm{J}}/{\rm{s}} = \frac{{1420 \times 3600}}{{1000}} = 5112~kJ/hr\) "> CONCEPT:To keep the temperature of the room as CONSTANT, the heat loss MUST be equal to the total heat dissipated in the room.Amount of total heat generated in the room = Qrefri + Qheater + QTV + QfanCalculation:GIVEN:Qrefri = 250 W, Qheater = 1 kW = 1000 W, QTV = 120 W, Qfan = 50 WTotal power dissipated from the appliances = 250 + 1000 + 120 + 50 = 1420 W = 1420 J/s\( \Rightarrow {\rm{Heat\;loss}} = 1420~{\rm{J}}/{\rm{s}} = \frac{{1420 \times 3600}}{{1000}} = 5112~kJ/hr\) ">
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A room contains 60 kg of air at 100 kPa and 15°C. The room has a 250 W refrigerator (the refrigerator consumes 250 W of electricity when running), a 120 W TV, a 1 kW electric resistance heater, and a 50-W fan. During a cold winter day, it is observed that the refrigerator, the TV, the fan, and the electric resistance heater are running continuously but the air temperature in the room remains constant. The rate of heat loss from the room that day is

Fluid Mechanics First Law Thermodynamics in Fluid Mechanics . 7 months ago

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CONCEPT:To keep the temperature of the room as CONSTANT, the heat loss MUST be equal to the total heat dissipated in the room.Amount of total heat generated in the room = Qrefri + Qheater + QTV + QfanCalculation:GIVEN:Qrefri = 250 W, Qheater = 1 kW = 1000 W, QTV = 120 W, Qfan = 50 WTotal power dissipated from the appliances = 250 + 1000 + 120 + 50 = 1420 W = 1420 J/s\( \Rightarrow {\rm{Heat\;loss}} = 1420~{\rm{J}}/{\rm{s}} = \frac{{1420 \times 3600}}{{1000}} = 5112~kJ/hr\)
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Posted on 01 Dec 2024, this text provides information on Fluid Mechanics related to First Law Thermodynamics in Fluid Mechanics. Please note that while accuracy is prioritized, the data presented might not be entirely correct or up-to-date. This information is offered for general knowledge and informational purposes only, and should not be considered as a substitute for professional advice.

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