Inquiry (采购产品): Sizing and costing Dear Sirs: I have a task which is completely outside my normal area of work, and I hope you will be able to assist me with this. I am trying to justify a choice between two cooling approaches for 3300 feet of high power microwave coaxial cable. I have information for most of the parts of the cooling system, but lack information on the heat exchangers. I am looking at two possibilities, which are similar in all parameters except air flow rate. Both approaches will require ten separate heat exchangers. In both approaches, the heat exchangers will be located inside a climate controlled building, where the internal temperature will always be about 70 deg. F. For both, the input air temperature will be 230 deg. F, and the output is to be reasonably close to 70 deg. F. The only difference is that in one approach, the air flow rate will be 6500 scfm, and in the other the flow rate will be 2000 scfm. Can you help with this? Tom Weaver **** Hidden Message ***** Thomas Weaver 63166 USA Company: Boeing Title: Associate Tech Fellow Phone: 314-233-0305 Fax: 314-232-4141 E-mail: thomas.l.weaver@boeing.com **** Hidden Message ***** thomas.l.weaver@boeing.com
