Sensible Heating of the Air through a constant area duct.
Sensible heating is a process in which the temperature of air is increased without
changing in its specific humidity. During this process, the temperature of the air is
increased due to the heating coil heated the area of the duct. This process of
sensible heating can be represented on the psychrometric chart, as shown by a
horizontal line 1-2 from left to right. The line starts from the initial DB
temperature of air and ends at the final temperature extending towards the right.
(Refer to the figure below).
In addition, during this process the sensible heat, Dry Bulb and Wet Bulb
temperature of the air increases while latent of air, and the Dew Point
temperature of the air remains constant.
Sensible heating of the air is an important process when the air conditioner
applications such as the heat pump to heat the air. In the heat pump the air is
heated by passing it over the condenser coil or the heating coil that carry the high
temperature refrigerant. In some cases the heating of air is commonly done to
suit different industrial and comfort air-conditioning applications where large air
conditioning system are used.
https://www.brighthubengineering.com/hvac/41436-psychrometric-processes-sensible-cooling-andsensible-heating-of-air/
In this experiment it is basically demonstrate the flow of forced convective air
element through a constant area duct. The fluid of air is being pumped through
the duct and then it is heat across as it passes the heat of coils generated from
the operating machine. In case we have to apply the amount of heater which set
in 2 kilowatt and 4 kilowatt. The measure values for the td1 and td2 are recorded
from the air conditioner reading.
This is the air condition unit where we can locate and the temperature which we
have to measure by adjusting the variable and control system of the conditioner.
This is the control system of the air conditioner. Here we can switch on the heater
power and adjust the variable switch to make constant air flow. It is also on this
control system where we read the amount of the increase temperatures td1 and
td2.