Heat flow - Quantity of heat transfer - Thermodynamics
Q. Heat flow is a quantity of heat transfer- Published on 21 Aug 15a. within definite time
b. within definite cross-sectional area
c. within definite volume of the system
d. none of the above
ANSWER: within definite time
The direction of the heat transfer takes place from a body with higher temperature to a body with lower temperature. The heat transfer takes place through all directions of the system with different rates of heat transfer. Heat transfer with a certain rate is a heat flow. Heat flow can be defined as a quantity of heat transfer within definite time. Q is the symbol of heat flow. If heat flows into a system then it is considered positive and if heat flows out of the system then it is considered as negative.
