Flash steam – What a waste!

Flash steam is pretty much inevitable in every steam plant – it comes from the hot condensate discharge from steam traps.


A commonly accepted view is that nothing much can be done about it – it’s the “necessary evil” of a steam system. But although it’s true that flash steam is generally unavoidable, it’s quite wrong to believe that nothing can be done about it. Flash steam is pretty much inevitable in every steam plant– it comes from the hot condensate discharge from steam traps.

The notion that it’s unrecoverable comes from the fact that flash steam is low-pressure steam with a relatively low temperature and constitutes “low-grade heat” compared to most, if not all, of the heating requirements on a site. And it many cases this does indeed appear

Refer to the flash steam recovery design below. The boiler feedwater is pressurized on the discharge side of the boiler feed-pump, downstream of the boiler feed check valve (non-return valve).

Flash steam recovery design system. Courtesy: Spirax Sarco

Content provided by Spirax Sarco, originally published in Steam News Magazine.

No comments
The Engineers' Choice Awards highlight some of the best new control, instrumentation and automation products as chosen by...
The System Integrator Giants program lists the top 100 system integrators among companies listed in CFE Media's Global System Integrator Database.
The Engineering Leaders Under 40 program identifies and gives recognition to young engineers who...
This eGuide illustrates solutions, applications and benefits of machine vision systems.
Learn how to increase device reliability in harsh environments and decrease unplanned system downtime.
This eGuide contains a series of articles and videos that considers theoretical and practical; immediate needs and a look into the future.
Choosing controllers: PLCs, PACs, IPCs, DCS? What's best for your application?; Wireless trends; Design, integration; Manufacturing Day; Product Exclusive
Variable speed drives: Smooth, efficient, electrically quite motion control; Process control upgrades; Mobile intelligence; Product finalists: Vote now; Product Exclusives
Machine design tips: Pneumatic or electric; Software upgrades; Ethernet advantages; Additive manufacturing; Engineering Leaders; Product exclusives: PLC, HMI, IO
This article collection contains the 5 most referenced articles on improving the use of PID.
Learn how Industry 4.0 adds supply chain efficiency, optimizes pricing, improves quality, and more.

Find and connect with the most suitable service provider for your unique application. Start searching the Global System Integrator Database Now!

Cyber security cost-efficient for industrial control systems; Extracting full value from operational data; Managing cyber security risks
Drilling for Big Data: Managing the flow of information; Big data drilldown series: Challenge and opportunity; OT to IT: Creating a circle of improvement; Industry loses best workers, again
Pipeline vulnerabilities? Securing hydrocarbon transit; Predictive analytics hit the mainstream; Dirty pipelines decrease flow, production—pig your line; Ensuring pipeline physical and cyber security