Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: Generating Electricity With A Letdown Gas Compressor
Author: Michael R. Hale
Source: American Gas Association 1987
Year Published: 1987
Abstract: San Diego Gas & Electric has been operating a turbo-expander-driven generator on its natural gas transmission system since April 1983. This system is capable of recovering the energy that is normally lost in the process of reducing gas pressure as it flows from a high pressure system into a low pressure system. San Diego Gas & Electrics system is installed at a city gate station. A turbo-expander is routinely described as a centrifugal compressor operating backwards. This description is very useful in visualizing the equipment and the process. Rather than putting energy into a gas stream and compressing it, an expander is capable of recovering the energy available in a pressure drop such as takes place in a regulator station. This energy is converted into shaft horsepower, which then can be used to drive a generator.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.