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 efficiency of a compression process (ηisen) is evaluated by comparing the work required for isentropic compression (wisen) to that required by the real compression process (wshaft). In addition to the irreversibility of the compression process, the electric motor that runs the compressor has...
- values and they can be calculated considering the isentropic efficiency of the steam turbine used.) Lines of constant dryness fraction (x), sometimes called...- static pressure, temperature and density decrease. Since the process is isentropic, the stagnation properties (e.g. the total ...
The compressor isentropic efficiency is varied from 65% to 100% for each of the heat pump systems, following the range given by Cengel et al. [54] for low to high efficiency compressors. The results indicate that the heat pump COP increases almost linearly with compressor efficiency. The COP...
The ideal cycle thermal efficiency of the heat engine is simply the inverse of the coefficient of performance of a heat pump working over the same temperature range. In this way, there is provided an effective way of extracting further energy from low grade heat. Such an arrangement could, fo...
4712610 Chemical heat pipe employing self-driven chemical pump based on a molar increase 1987-12-15 Keston et al. 4455825 Maximized thermal efficiency hot gas engine 1984-06-26 Pinto 4418683 Separated phase thermal storage system 1983-12-06 Friefeld et al. 4397962 Energy storage element and me...
volumetric 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 account the dead...
Isentropic EfficiencyPinch PointThe coefficient of performance COP of a transcritical CO_2 heat pump system is greatly affected by the compressor discharge pressure. An internal heat exchanger is also important to improve the system performance. Simulations of the ideal transcritical heat pump cycles ...
Simulations of the ideal transcritical heat pump cycles show maxima in the COP at optimalhigh pressures depending on evaporation temperature and gas cooler outlet temperature. The real compressorbehavior has been incorporated by the isentropic efficiency as a function of the pressure ratio. Then ...
The heat efficiency of different mode of drainage recycling is calculated and analyzed by heat balance method and equivalent enthalpy drop method in this paper,which provides the quantitative date for thermodynamic system energy. 本文通过热平衡法和等效热降法对不同疏水回收利方式的热效率进行了计算比较,...