Enthalpy deficit

Degree of subcooling at channel inlet, expressed as an enthalpy deficit, Btu/lb... 

Figure 4.57. Temperature-enthalpy deficit curves for column 1 of the methanol plant in Example 4.32. Column 1 configuration...

Figure 5.12. Column grand composite curves tor column 1 in Example 5.15 (a) temperature-enthalpy deficit curves and (b) stage-enthalpy deficit curves (Table 5.3 describes designs 1 and 2).

Figure 5.14. Temperature-enthalpy deficit curves for column 2 in Example 5.15 (a) design 1 and (b) design 2 (Table 5.4...

Here Ap is the density difference between mixture and air and AM is the molar weight difference between contaminant and air now including humidity. The linearization is justified for a dilute mixture c 1. The density effect of a source enthalpy deficit is seen to be equivalent to excess molar weight and consequently we define an effective molar weight hy ... 

Variable atmospheric wind conditions makes the integral heat balances quite difficult, and as an alternative, Nielsen and Ott (1999) preferred to test whether local cloud enthalpies were in accordance with the assumption of adiabatic mixing. Figure 18.3 illustrates how this local enthalpy was found. The gas concentration c and cloud temperature T were measured at close positions, whereas the ambient temperature was represented by the measurements of an unexposed reference thermometer at the top of the mast. In order to adjust the pretrial enthalpy deficit to zero, the temperature signal was corrected for its pretrial offset relative... 

An entropy effect leading to energy dissipation or exergy loss either within or through the boundary of a system is unavoidable in every irreversible system. Thermodynamic analysis determines the net enthalpy deficits and exergy losses due to irreversibility at each stage of a distillation column by combining the first and second laws of... 

Fig. 2. base case temperature-enthalpy deficit ciuves... 

Fig. 4. (a) comparison of the stage-enthalpy deficit ciurves of base case and BFHP (b) comparison of the stage-exergy loss profile of base case design and BFHP. 

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