Ch02 Flashcards
What is heat transfer?
The process of thermal energy moving from one system to another due to a temperature difference
Heat transfer is a scalar quantity.
What does temperature represent in a thermal system?
A scalar quantity that indicates the thermal state of a system
Temperature is measured in degrees and does not have a direction.
What is a temperature gradient?
The rate of change of temperature with respect to distance
It is a vector quantity, indicating both magnitude and direction.
Is heat transfer a scalar or vector quantity?
Scalar
Heat transfer itself does not have a direction, unlike heat flux.
What is heat flux?
The rate of heat transfer per unit area
Heat flux is a vector quantity.
What is the relationship between heat transfer and temperature?
Heat transfer occurs due to a temperature difference between systems
Heat flows from higher to lower temperature regions.
What is the effect of internal heat generation?
It alters the temperature distribution within a system
Internal heat generation can lead to non-uniform temperature profiles.
Fill in the blank: Heat transfer is a _______ quantity.
scalar
True or False: Temperature is a vector quantity.
False
Temperature is a scalar quantity.
What factors influence heat transfer?
Temperature difference, surface area, and material properties
These factors determine the efficiency and rate of heat transfer.
