Answer Happy

An air conditioning system is to be designed for a small office
for winter conditions as follows:
• Outdoor conditions: 12oC DBT and 100C WBT
• Indoor conditions: 220C DBT and 60% RH
• The amount of air supplied: 30 m3/min
Find out the following:
a) Sensible heat gained or lost by the air in
KW
b) Latent heat gained or lost by the air in
KW
c) Sensible heat factor
Use the psychrometric chart to find the above values and show
the screenshot or image of the chart.
Hint: Use the psychrometric chart to solve the
numerical.
• First locate the two points on the
psychrometric chart
• Then find the enthalpy of the air to get
sensible heat and latent heat.
• Also find the specific volume of the air at
outdoor conditions to get the mass flow rate of the air.