Design Of Air Cooling Heat Recovery Electricity Generation System And Turbine Blade

Based on the chimney effect principle which has been widely used in solar chimneypower plant, this thesis put forward the system that can generate electricity by using thecondensers’ released heat in air-cooling power plant. At the same time, the blade of windturbine installed in the system was designed. This system can recovery residual heat andreach the purposes of energy saving and relieve partial heat island effect, besides, reduceair blowers operation time can save electricity and lessen noise pollution. To finish theproject, the following steps are followed:First, the theoretical review was carried out and the principle of the system wasensured, leading to the design of the system structure and define functions of eachcomponent in the system. In the second part the theoretical analysis of the systemincluding ideal thermodynamic cycle and actual thermodynamic cycle were done and gotthe results of system efficiency and suction force in the chimney. In the theoreticalanalysis, the energy and pressure losses in the system were considered to make thecalculation results more close to actual situation. By the theoretical analysis the feasibilityof the system was proven and if the system can realize nature ventilation was test. Thenext step was build two dimension axial symmetry mesh model in GAMBIT and the CFDsimulation of flow field in the chimney was finished to show more detail and got theparameters such as velocity, density distribution in the chimney, these parameters canaffect available energy contained in flow field and are valuable for the wind turbine bladedesign. In the third step, a specific work was dedicated for the design of the turbine bladesuitable for the system and the key parameters of the turbine including chord andinstallation angle for16blade elements and parameters indicate the blade aerodynamicperformance such as power coefficient and torque coefficient were also obtained. DeducedMomentum Blade Theory and Glauert Vortex Theory were chosen in the blade design anda results comparison between two methods was contained in the research. Finally, theeconomic evaluation of the system was done by empirical equation in engineering cost toprove the economic feasibility of the project.