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Posted inHeat & Mass Transfer
INTRODUCTION – HEAT TRANSFER
1) Heat transfer has direction as well as magnitude, and thus it is a vector quantity a) Must specify both…
Posted inHeat & Mass Transfer
SIMULTANEOUS HEAT TRANSFER MECHANISMS
1) Three mechanisms of heat transfer, but not all three can exist simultaneously in a medium.…
Posted inHeat & Mass Transfer
RADIATION
1) Radiation is the energy emitted by matter in the form of electromagnetic waves (or photons)…
Posted inHeat & Mass Transfer
CONVECTION
1) Convection heat transfer involves both energy transfer due to random molecular motions and by bulk…
Posted inHeat & Mass Transfer
CONDUCTION
1) Conduction heat transfer is due to random molecular and atomic vibrational, rotational and translational motions a) High…
Posted inHeat & Mass Transfer
HEAT TRANSFER VS THERMODYNAMICS
1) Thermodynamics is concerned with the amount of heat transfer as a system undergoes a process…
Posted inEngineering Metrology & Measurement
MEASUREMENT OF TEMPERATURE
“Is a measure of velocity of fluid Particles” Standard temperature and pressure (STP) Normal temperature and pressure (NTP) Temp.Scale Instruments to measure temperature: Filled system in temperature measurement …
Posted inEngineering Metrology & Measurement
Flow Meters
What is a Flow Meter? A flow meter is a device used to measure the…
Posted inEngineering Metrology & Measurement
MEASUREMENT OF POWER
“Power is generally done by dynamometers” Types of dynamometers: Absorption dynamometers Driving dynamometers Transmission dynamometers Mechanical Dynamometers: “Mechanical energy is converted in to heat through dry friction between the Wooden brake blocks and the flywheel of the machine. D.C. Dynamometers: “Is…
Posted inEngineering Metrology & Measurement
MEASUREMENT OF TORQUE
Torque reaction methods Cradled power source Cradled power absorber Proney Brake Torque measurement using Torsion bars: Optical method Capacitive method:…