piston compressorvolumetric efficiencyisentropic efficiencyTranslated from Khimicheskoe i Neftegazovoe Mashinostroenie, No. 12, pp. 25–26, December, 2017.A relationship that establishes a correlation between the isentropic efficiency and volumetric efficiency of a piston compressor and that takes into ...
The energy transferred to the solution and water by thecirculating pumps(W1andW2) is estimated by considering anisentropicefficiencyηisfor each pump, and the fact that the density of the liquid is constant between the tank outlet and theheat exchangerinlet. Thus, Equation(3.39)gives the workw1...
thermoelectric refrigerator, isentropic losses in the reverse Brayton cycle, and limits arising from the equation of state in the reverse Rankine cycle), ... H Mahmoud,A Bjarne - Physics Research International,2010,(2010-11-04) 被引量: 4发表: 2010年 Experimental Verification of Thermally Activate...
( )Wad = κκ − 1 RrT1′ p2 p1 κ − 1 = Fr ⋅ h′2 − h1′ (13) where ηcom is the isentropic efficiency of the compressor, k is the heat capacity ratio of the compressor's working fluid, Rr is the ...
In the above equation, the open-circuit voltage of the fuel cell stack is in standard temperature (25°C) and pressure (1 atm) is obtained as follows (Gollou et al., 2017): (2)Eoc=1.3−85×10−5TPEM−298.15+4.31×10−5×TPEM×lnPH2PO2 where, (3)PO2=Pc×e−1.635IP...
(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:
performed on the lengths of the GHX, GC, and TES by dividing each length to several segments and applying the conservation equations for each length element. The thermodynamic modeling of the system was conducted by applying the thermodynamic formulations in the Engineering Equation Solver (EES) ...
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...
The pump isentropic efficiency is set constant at 85%, while the regenerator efficiency is 95%. The ORC system performance is evaluated based on specifying the energy balance in each component, the thermal and electrical powers, efficiencies, and the cycle efficiency. The equations applied to ...