WebA psychrometric chart is a graph of the thermodynamic parameters of moist air at a constant pressure, often equated to an elevation relative to sea level. ... (SI) joules per … WebSensible Cooling Load (Btu/hr) = 2000 x 1.032 x (90 –75) Sensible Cooling Load = 30960 Btu/hr Required Cooling Tonnage = (Btu/hr)/12000 Required Cooling Tonnage = 30960/12000 Required Cooling Tonnage = 2.58 Tons See this example on the following psychrometric chart.
Cooling and Heating Equations - Engineering ToolBox
WebJul 13, 2024 · A psychrometric analysis involves using a psychrometric chart, as seen in Figure 1, to determine the dry bulb (°F), wet bulb (°F), dew point (°F), RH (%), humidity ratio (gr/lb), and enthalpy (btu/lb) of air at a given condition. Moving the plotted point in different directions on the chart represents various ways of conditioning the air, as ... WebJan 16, 2024 · The heat added equals the enthalpy difference, or qa = Ah = h2 - h = 21 - 10.16 = 10.84 Btu/lb dry air. If the enthalpy deviation is ignored, the heat added qa is Ah = 21.1 - 10.1 = 11 Btu/lb dry air, or the result is 1.5 percent high. Figure 12-7 shows the heating path on the psychrometric chart. Example 4: Evaporative Cooling Air at 95°F dry ... dbs shower panels
Cooling and Heating Equations - Engineering ToolBox
WebJul 29, 2024 · on a psychrometric chart. A baseline graph valid at sea level to 1,000-meter altitude and 50% relative humidity can be used as a close approximation, other elevations and ... With the heat absorption (system enthalpy) of 8.6 BTU/lb. of air, the system thermal (load) capacity is: A refrigeration ton is approximately equivalent to . Air- WebAug 30, 2024 · 1. Look on the right side of the chart to find the vertical dew point line. Just to the right of the Y-axis, find the line with the dew point measurement in degrees Fahrenheit … WebApr 11, 2024 · To determine the temperature at State 2, we need to use the given humidity ratio and specific enthalpy values with a psychrometric chart or calculator. From the given values, we have w2 = 0.0154 lbv/lbda and h2 = 37.2 Btu/lbda. dbs shonen