WHAT IS BY-PASS FACTOR

BY-PASS FACTOR:
It is defined as the ratio of the difference between the mean surface temperature of the coil and leaving air temperature  to the difference between the mean surface temperature of the coil and leaving air temperature.

WHAT IS SENSIBLE HEATING

SENSIBLE HEATING:
When air passes over a dry surface which is a temperature greater than its dry bulb temperature, it (air) undergoes sensible heating. During sensible heating specific humidity remains constant. During this process dry bulb temperature of air raises and approaches that of dry surface.

SENSIBLE HEAT AND LATENT HEAT

SENSIBLE HEAT:
It is the heat that changes the temperature of a substance when it added to or removed from it.

LATENT HEAT:
It is the heat that does not affect the temperature but changes the state of a substance when added or removed from it.

WHAT IS SYSTEM, BOUNDARY AND SURROUNDINGS

SYSTEM:
A System is a Finite quantity of matter
(or)
Prescribed Region of Space

BOUNDARY:
The actual or hypothetical envelope enclosing the system is called boundary. The boundary may fixed or may move. The boundary may be real or imaginary

SURROUNDINGS:
Everything outside the boundary is called surroundings