Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7164745 | Energy Conversion and Management | 2014 | 11 Pages |
Abstract
In this paper, a first step towards a system optimization of organic Rankine cycles (ORCs) is taken by optimizing the cycle parameters together with the configuration of shell-and-tube heat exchangers. In this way every heat exchanger has the optimum allocation of heat-exchanger surface, pressure drop and pinch-point-temperature difference for the given boundary conditions. Different tube configurations are investigated in this paper. It is concluded that the 30°-tube configurations should be used for the single-phase heat exchangers and the 60°-tube configuration for the two-phase heat exchangers. The performance of subcritical cycles can be strongly improved by adding a second pressure level. Recuperated cycles are only useful when the temperature of the heat source after the ORC should be relatively high.
Related Topics
Physical Sciences and Engineering
Energy
Energy (General)
Authors
Daniël Walraven, Ben Laenen, William D'haeseleer,