The volumetric efficiency of the subsurface pump is defined as the ratio of the liquid rate produced at the surface divided by the total volume of liquid displaced by the pump. This efficiency is affected by several different factors and can be estimated using different methods, depending on the...
The main design parameters or decision variables for multi-objective optimization of the pump are the pump inlet pressure (P1), the pump outlet pressure (P2) and the pump isentropic efficiency (ηpump). 1.28.6.4.1.2 Constraints In order to formulate a meaningful optimization problem, three constr...
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55、used to obtain the polytropic efficiency of the centrifugal compressors by replacing by isentropic index of compression, , For actual gas the polytropic efficiency is estimated from the equation: 1 1k k pol For actual centrifugal compressors, the polytropic efficiency is found to lie in the ra...
Engineering Equation Solver GWP: Global warming potential HFC: Hydrofluorocarbon HP: Heat pump ICT: Information and communications technology NG: Natural gas ODP: Ozone depletion potential PV/T: Photovoltaic thermal References Abatzoglou JT, Williams AP (2016) Impact of anthropogenic climate...
(7) E4 = EL3 + E1 The exergy loss coefficient equation for the evaporator can be expressed as: ξ4 = EL4 W ASHPWH system The exergy balance equation of ASHPWH system is: ξ = EL W = Σξi (8) (9) (10) The exergy efficiency equation of ASHPWH system is: ηe = 1− ξ...
Isentropic v: Water vapor w: Water p: Product C-HPD: Conventional heat pump drying system COP: Coefficients of performance EES: Engineering equation solver EIE: Environmental impact assessment EV: Expansion valve GHG: Greenhouse gas GWP:
The reason for this can easily be understood from the Carnot efficiency. The work required to absorb heat from the below-ambient heat source is given by a rearrangement of Equation (5.8): (5.10)W=Q2COPr=Q2(T1−T2)ηmechT2 The upper temperature, T1 is usually fixed at ambient, but as...
It also provides a reference for the maximum value of vortex pump isentropic efficiency in theoretical analysis and numerical simulation.Xu Ping aFubin Yang a bHongguang Zhang aWujie Zhang aGege Song aYuxin Yang a cSustainable Energy Technologies and Assessments...
an isentropic calculation is first performed in order to obtain an isentropic exit enthalpy, denoted as his. Thus, h104sand h108sare the isentropic enthalpies at the exit of the compressor and first turbine stage, respectively. The actual enthalpies stem from the component efficiency definitions, ...