首页|DEVELOPMENT OF A DIRECT EVAPORATOR FOR THE ORGANIC RANKINE CYCLE

DEVELOPMENT OF A DIRECT EVAPORATOR FOR THE ORGANIC RANKINE CYCLE

扫码查看
原文链接
  • NETL
Research and development is currently underway to design an Organic Rankine Cycle (ORC) system with the evaporator placed directly in the hot exhaust stream produced by a gas turbine (GT). ORCs can be used to generate electricity from heat that would otherwise be wasted, thus producing carbon-free energy. In conventional ORC configurations, an intermediate oil loop is used to separate the hot gas from the flammable working fluid. The goal of this research effort is to improve cycle efficiency and cost by eliminating the pumps, heat exchangers and all other added cost and complexity of the additional heat transfer loop by developing an evaporator that resides in the waste heat stream. Direct evaporation - although simpler and less expensive to implement than indirect evaporation of the working fluid - has historically been avoided due to a number of technical challenges imposed by the limitations of the working fluid. The high temperature of the hot exhaust gas may cause decomposition of the organic working fluid and safety is a major concern due to the high flammability of some of these working fluids. The research team has addressed these challenges and developed a new direct evaporator design that can reduce the ORC system cost by up to 15%, enabling the rapid adoption of ORCs for waste heat recovery. The ORC system is intended to integrate with the GT either as a retrofit or to be marketed as a single package, thus maintaining the manufacturer's warranty.

organic rankine cycledirect evaporatorwaste heat recovery

Donna Guillen、Helge Klockow、Matthew Lehar、Sebastian Freund、Jennifer Jackson

展开 >

Idaho National Laboratory, Idaho Falls, ID 83406 USA

General Electric Co., One Research Circle, Niskayuna, NY USA

General Electric Co., Freisinger Landstrasse 50, D-85748 Garching b. Muenchen, Germany

Symposium on energy technology;TMS annual meeting & exhibition

San Diego, CA(US);San Diego, CA(US)

Energy technology 2011: Carbon dioxide and other greenhouse gas reduction metallurgy and waste heat recovery

p.25-35

2011