On Mon, Dec 09, 2019 at 12:36:38PM -0500, Phil Smith III wrote: > https://hackaday.com/2019/12/08/the-barn-find-ibm-360-comes-home/ > sparked a discussion on a private list about air- and water-cooling. I'm > quite sure that the /44 and /75 we had at UofWaterloo were air-cooled, > because we had no water. (That was one of the motivations for VM SSI, > because we couldn't go bigger than the 4300s: we had four 4341s in an > SSI configuration.)
The 360/91 was water cooled. On power up with high humidity care had to be taken to avoid condensation/rain in the CPU. I'd suspect that the 360/75 was water cooled but appears to be air cooled: http://bitsavers.org/pdf/ibm/360/fe/2075/223-2875-1_2075_Processing_Unit_Field_Engineering_Manual_Volume_4_Mar66.pdf see page 10 which says: cooling: Main Frame force room air, 3350 cu.ft./min. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
