DEVELOPMENT OF THE TRILATERAL FLASH CYCLE SYSTEM .2. INCREASING POWER OUTPUT WITH WORKING FLUID MIXTURES

被引：16

作者：

SMITH, IK

DASILVA, RPM

机构：

[1] Department of Mechanical Engineering and Aeronautics, City University, London

[2] Departamento de Química, Pontifícia Universidade Católica do Rio de Janeiro

来源：

PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART A-JOURNAL OF POWER AND ENERGY | 1994年 / 208卷 / A2期

关键词：

D O I：

10.1243/PIME_PROC_1994_208_022_02

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The trilateral flash cycle system is a proposed means of power recovery from single-phase low-grade heat sources. Its feasibility depends on the efficient adiabatic expansion of light hydrocarbons from the saturated liquid phase into the two-phase region. Such a process is performed most effectively with a Lysholm twin-screw expander when the exhausted vapour is wet. At higher temperatures, when multi-stage expansion is required, working fluids may be found which complete the process as dry saturated vapour. It is shown that at condensing temperatures of 0-50-degrees-C, this is possible with a mixture of n-pentane and 2,2-dimethylpropane (neopentane) for fluid inlet temperatures in the 150-180-degrees-C range. A radial inflow turbine may then be used in place of a screw for the last stage. With such an arrangement, expander adiabatic efficiencies of up to 85 per cent have been predicted for power outputs in excess of 5 MW. The method of fluid property estimation is described and its accuracy confirmed by experiment.

引用

页码：135 / 144

页数：10

共 29 条

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