MoistAirTab™ Example 3 - Heating
Example 3
Moist air, saturated at 2°C, enters a heating coil at a rate of 10 m3/s. Air leaves the coil at 40°C. Find the required rate of heat addition.
Solution
The solution is presented below as a table generated from Excel. The gray shaded areas represent the input data.
| Soution: | Units | Inlet | Outlet |
| Total pressure | bar | 1.01325 | 1.01325 |
| Dry bulb temperature | °C | 2 | 40 |
| Wet bulb temperature | °C | 2 | 40.00 |
| Volume flow rate | m3/s | 10.00 | 11.39 |
| | | | |
| Humidity ratio | kgw/kgdry air | 0.0044 | 0.0044 |
| Volume of moist air | m3/kgdry air | 0.7845 | 0.8932 |
| Mass flowrate (dry air) | kgdry air/s | 12.7463 | 12.7463 |
| Enthalpy of moist air | kJ/kgdry air | 12.98 | 51.53 |
| Total enthalpy flow | kJ/s | 165.45 | 656.86 |
| | | | |
| Heat added | kW | | 491.42 |