Page 52 - BASIC CONCEPTUAL OF THERMOFLUID
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Sign convention for heat transfer
· if heat energy flows into the system from the surroundings it is said to be positive.
· if heat energy flows from the system to the surroundings it is said to be negative.
SIGN CONVENTION FOR HEAT transfer
Internal energy
· is the sum of all the energies a fluid possesses and stores within itself.
ADDED WORK AND HEAT RAISE THE INTERNAL ENERGY OF A CLOSE SYSTEM
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