Dear Burton, Thanks for your answer,I am doing manual hydraulic calculations for carbon dioxide and Halon 1301 systems based on NFPA-12 and NFPA-12A easily but NFPA-2001 has not stated enough information to determine nozzles pressure and flow rate for a HCF-227ea System, just I can calculate the required mass of FM-200! I know that now a days UL listed computer softwares are able do to a complete hydraulic calculations, but actually these softwares are also based on some formulas and equations. The more I look for, the less I find! I would like to ask if it is possible to do hydraulic calculations of a engineered FM-200 System manually? Or the formulas are secrets and only software owners like Hughes associates have it!? If NFPA has the formulas for hydraulic calculations of HCF-227ea Systems, why doesn't NFPA publish them? Thanks for your kind help Regards, Reza
"Ford, Charles" <[EMAIL PROTECTED]> wrote: Reza, There are many issues with your question and statements. NFPA 12A is [more accurately was] for Halon 1301 ONLY. NFPA 2001 describes the calculation method for FM-200 although I'm not sure they can be duplicated by normal people. We have all been disappointed by FM-200 Calcs but I see no other solution other than the specific manufacturers UL listed computer program(s). Burton Ford NICET IV Special Hazards, CFPS Member AFAA [EMAIL PROTECTED] 267-487-1000 Fax 267-487-1010 This e-mail transmission contains information that is intended to be confidential and privileged. If you receive this e-mail and you are not a named addressee you are hereby notified that you are not authorized to read, print, retain, copy or disseminate this communication without the consent of the sender and that doing so is prohibited and may be unlawful. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please delete and otherwise erase it and any attachments from your computer system. Your assistance in correcting this error is appreciated. Thank you. Cintas Corporation -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Reza Esmaeili Sent: Wednesday, August 08, 2007 12:50 PM To: [email protected] Subject: A Question HFC-227ea System Hydraulic Calculation Dear Friends, I know this forum is not the proper place for asking this questions, but I am completely disappointed on hydraulic calculation of a FM-200 system. I would be thankful if you can answer my question or help me how th solve my problem. My question is as below: To do hydraulic calculation of a FM-200 600Psi, system first I want to calculate the percent of FM-200 in piping to be able to find out working pressure, there is a formula in NFPA 12A to determine percent of agent in piping, which is k1/[(W/V)+ K2 ] but there is nothing about this issue in NFPA 2001, I want to know if I can calculate percent of HFC-227ea in piping based on the same formula which is in NFPA 12 A, can I use the same K1 & K2 Constants of Halon 1301 for HFC-227ea? If not, how can I calculate? I don't know if I am going the right way, I was looking for a worked example but I couldn't find, can anybody help me? Thanks in advance. Regards, Reza --------------------------------- Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) This e-mail transmission contains information that is intended to be confidential and privileged. If you receive this e-mail and you are not a named addressee you are hereby notified that you are not authorized to read, print, retain, copy or disseminate this communication without the consent of the sender and that doing so is prohibited and may be unlawful. Please reply to the message immediately by informing the sender that the message was misdirected. After replying, please delete and otherwise erase it and any attachments from your computer system. Your assistance in correcting this error is appreciated. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) --------------------------------- Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
