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[EMAIL PROTECTED] wrote on 10/24/2006 04:39:58 AM: > *** For details on how to be removed from this list visit the *** > *** CCP4 home page http://www.ccp4.ac.uk *** > > > I have mains-supplied water running through our rotating anodes (M007 > and M007 hf), which goes into the chiller at around 10 degrees Celsius > and exits the generators at around 20 degrees C, so, in my opinion, a > raise of 5 degrees C would be acceptable. However, this water goes > straight down the drain after exiting the anode, so our water chillers > are not burdened with cooling relatively warm water. An old chiller may > find this a bit too much work. Good luck. > Mark > > > 18-20 celsius degrees. I have to redimension an old chiller for this > > purpose and I was wondering if someone have any idea about the temperature > > of the output water when rotating anode is properly working. I know the > > answer will depend on each rotating anode type but any reference will be a > > starting point for my case (ps. i could not find such answer in the > > manual). Is a raise of 5 celcius degrees a common value? > > > Dear Ronaldo - Here's some related numbers that I collected when Rigaku and I were trying to diagnose a chiller problem in my then-new 007HF. At 1.2 kW (full power; 40 kV/30 mA), the generator was dumping 2.2 kW of heat into the closed water loop of the chiller. Flow was 1.1 gpm, and water temp into the generator was 20 C, water temp out was 35 C. We eventually determined that the Haskris R033 (1/3 hp) was too small to take the heat load, even though a similar system had worked in other installations. Replacing the Haskris with a 3/4 hp model allowed the chiller to handle the heat from the generator. This was a refrigerated, water-cooled Haskris system: a closed loop of circulating water cooling the X-ray generator,with a refrigeration system taking the heat from the closed loop and dumping it into a city water open loop. I would say that, for this system, the 1/3 hp chiller was marginal (worked for some people, not for me) while the 3/4 hp chiller is more than adequate. We never did figure out where the extra 1 kW of heat came from; the only things that the water cools are the anode and the tube tower. Hope that's helpful. I can provide a few more details if you want. - Matt -- Matthew Franklin , Ph.D. Senior Scientist, ImClone Systems 180 Varick Street, 6th floor New York, NY 10014 phone:(917)606-4116 fax:(212)645-2054 Confidentiality Note: This e-mail, and any attachment to it, contains privileged and confidential information intended only for the use of the individual(s) or entity named on the e-mail. If the reader of this e-mail is not the intended recipient, or the employee or agent responsible for delivering it to the intended recipient, you are hereby notified that reading it is strictly prohibited. If you have received this e-mail in error, please immediately return it to the sender and delete it from your system. Thank you.
