Hi,
Yup, I worked on 360/75J and it was air-cooled.
BobL
-----Original Message-----
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of
Michael Stein
Sent: Monday, December 9, 2019 11:29 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [EXT] Re: Water-cooled 360s?
On Mon, Dec 09, 2019 at 12:36:38PM -0500, Phil Smith III wrote:
> https://urldefense.proofpoint.com/v2/url?u=https-3A__hackaday.com_2019
> _12_08_the-2Dbarn-2Dfind-2Dibm-2D360-2Dcomes-2Dhome_&d=DwIBAg&c=MWFkEA
> Du9ctt4KEmLIuwsQ&r=2NwYDhbHSLSk8Y20BtkXqDR04_yd_pXjwSDkT22AeGs&m=noWKG
> abWEloNYvr8dF-eyDFk_R2qlgA9_tNOFSzCQ78&s=HvoeqV2J-z1iKd2zwq0YlYXBHU7Vq
> 0ZiJIbQUGSIpOQ&e= 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:
https://urldefense.proofpoint.com/v2/url?u=http-3A__bitsavers.org_pdf_ibm_360_fe_2075_223-2D2875-2D1-5F2075-5FProcessing-5FUnit-5FField-5FEngineering-5FManual-5FVolume-5F4-5FMar66.pdf&d=DwIBAg&c=MWFkEADu9ctt4KEmLIuwsQ&r=2NwYDhbHSLSk8Y20BtkXqDR04_yd_pXjwSDkT22AeGs&m=noWKGabWEloNYvr8dF-eyDFk_R2qlgA9_tNOFSzCQ78&s=0Huvu4ip5ZaCxUYYi7-T1od7PriGEc5R9SaBzeFRDio&e=
see page 10 which says:
cooling: Main Frame force room air, 3350 cu.ft./min.
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