-----Original Message----- From: Horace Heffner [mailto:[EMAIL PROTECTED] Sent: Tuesday, December 11, 2007 4:34 PM To: vortex-l@eskimo.com Subject: Re: [Vo]:Mostly Wasted
On Dec 11, 2007, at 12:00 PM, Jeff Fink wrote: > > Waste power plant heat is much cooler than geothermal. That's interesting. Do you know what temperature is available post turbine, prior to cooling? As I recall, the temperature of the condensate draining from the condenser to the hotwell was in the range of 112 degrees F. There was some practical advantage to using a three section multi-pressure condenser design that improved efficiency by making the condenser act like a counter flow heat exchanger. I know this was done in the 70's on units in the 500 to 1000 Mw range. The circulating water emerging from the condenser, and going to the cooling tower would be about 10 degrees cooler than the hotwell. A hot steamy summer day could cause these temperatures to rise a few degrees which would degrade the generating performance just when the companies need their maximum capacity. Jeff No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.17.0/1180 - Release Date: 12/10/2007 2:51 PM
