A point near the saturation line and under the target point is first determined in the h-x diagram. The system must be heated before humidification. The point under the target point is then achieved …

There are two enthalpy control strategies available: single and differential enthalpy control. The single enthalpy cont rol uses one enthalpy sensor located in the outdoor air in any orientation that exposes …

Online Interactive Pressure-Enthalpy (p-H) and Temperature-Entropy (T-s) Diagram for HVAC-R engineers.

The selection of the suitable control system for a certain application depends on the controlled system, permissible control tolerance, humidity increase and supply air temperature.

The annual energy impact of proper total energy wheel control for a specific building depends on climate, build-ing use, and system design. Figure 11 depicts the impact of proper wheel control on …

Note that this is a contrived example in order to demonstrate that no matter how complex the system is, we can easily plot the entire system on a P-h diagram and obtain an immediate intuitive …

Control quality of an once-through boiler's water-fuel ratio (WFR) and main-steam temperature are heavily influenced by the control quality of the once-through boiler's intermediate point...

The control dial setting should be selected from the psychro- metric chart (see Figures 3 and 4 and Table 3). The areas to the right of each curve in the chart, determined by the control dial setting, …

If a certain radiated heat transfer between Planets Y and Z causes an entropy change of -2.9 BTU/lbm.°R at Planet Y and an entropy change of 3.1 BTU/lbm.°R at Planet Z, what would be the …

This manual provides installation and maintenance information about the enthalpy energy recovery wheel option (“enthalpy wheel”) featured on the following Daikin Applied RoofPak models: