Thermal integration of trigeneration systems
Thermal integration of trigeneration systems
复制标题
三联产系统的热集成
DOI：
10.1016/j.applthermaleng.2004.06.022
复制
发表时间：
2005
影响因子：
6.4
通讯作者：
M. Toral
中科院分区：
文献类型：
--
作者：
E. Calva;M. P. Núñez;M. Toral
三联产可以被认为是热电联产系统应用的一个特殊情况，其中一部分轴功或余热用于运行制冷系统。这项工作的重点是三联产方案，其中气体涡轮机被用作发电和冷却的原动机是由一个典型的压缩制冷系统产生。在大多数应用中，燃气涡轮机将满足过程功率需求或加热需求，但不可能以最有效的方式同时满足两者。通过将涡轮机排气温度分布叠加到T相对于焓曲线中的工艺流分布上，可以容易地实现选择在供应所需功率的同时使到环境的热损失最小化的燃气涡轮机。这是因为最大总效率取决于过程热量和功率需求以及过程的热量需求曲线的形状。热力学模型的使用有助于模拟系统的主要组成部分，并允许一个快速和交互式的方式来设计最佳的三联产方案，使用商用燃气轮机的性能数据。
Trigeneration can be considered as a special case of the application of cogeneration systems where a fraction of the shaft work or residual heat is used for running a refrigeration system. This work focuses on trigeneration schemes where a gas turbine is used as a prime mover for power production and cooling is generated by a typical compression–refrigeration system. In most applications, a gas turbine will meet either the process power requirements or the heating needs, but it is unlikely that both would be satisfied simultaneously in the most efficient manner. The selection of the gas turbine that minimizes the heat losses to the ambient while supplying the required power can be readily accomplished by superimposing the turbine exhaust gas temperature profile to the process streams profile in a T vs enthalpy curve. This is because the maximum overall efficiency depends on the process heat and power demands and on the shape of the heat demand profile of the process. The use of the thermodynamic model helps to simulate the main components of the system and permits a fast and interactive way to design the optimum trigeneration scheme using the performance data of commercial gas turbines.