Cooling Environments/Immersion

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Welcome to the OCP Immersion Cooling Sub-project to the Cooling Environments Project.

This Project is open to the public and we welcome all those who would like to be involved.

Disclaimer: Please do not submit any confidential information to the Project Community. All presentation materials, proposals, meeting minutes and/or supporting documents are published by OCP and are open to the public in accordance to OCP's Bylaws and IP Policy. This can be found on the OCP OCP Policies page. If you have any questions please contact OCP.

Project Leadership

Immersion Structure Thumb.jpg

ACS Immersion Cooling Sub-project Leads

- Rolf Brink (Asperitas)
- John Bean (GRC)

For Cooling Envitonment Project leadership, please refer to the Cooling Environments Wiki page

- Cooling Environments Wiki

Workstream leadership

There are various workstreams within the immersion project with their own respective workstream leaderships. An overview can be found under Immersion Project and Workstreams
See the orgchart on the right side (click to enlarge) for the full overview of all workstreams and responsibilities within the immersion project.


The Immersion sub-project enables community driven activities focused on facilitating OCP and industry progression of immersion cooling. Within the Cooling Environments (CE) group, this project also facilitates harmonization among other sub-projects and various other industry platforms.

Related documentation

Additions or changes to put on the agenda of different focus groups can be included in the "Suggested Changes" document.

- Change and update suggestion document
- OCP Presentation Template - please contact the project leadership for a copy

Accepted contributions

- Mar 06, 2019: Asperitas Fan Sim Specification
- May 20, 2019: ACS Immersion Community Requirements White Paper
- Feb 27, 2020: Asperitas Open Cassette Specification
- Feb 27, 2020: Asperitas Open Cassette design file
- Dec 18, 2020: Design Guidelines for Immersion Cooled IT equipment Whitepaper
- Jan 21, 2022: Immersion Requirements rev2
- Nov 28, 2022: Material Compatibility in Immersion Cooling
- Nov 28, 2022: Material Compatibility in Immersion Cooling
- Dec 01, 2022: OCP Base Specification for Immersion Fluids

Immersion Requirements Qualification

The Immersion Requirements sub-project is responsible for the generation and qualification of requirements for immersion solutions. The requirements are aimed at ensuring accurate and factual technology positioning and weeding out marketing claims vs solid engineering. Vendors need to qualify against the requirements which are outlined in the Immersion Requirements document to gain access to a variety of OCP domains, including marketplace or SPEC recognition. Some examples are as follows:

- OCP immersion spec submission
- OCP Logo accreditation for immersion solutions (accepted/inspired)
- OCP solution branding
- OCP Marketplace positioning
- OCP Solution building

The qualification process is as follows:

1- A qualification request with a filled-out checklist shall be sent to the Immersion Community project leads.
2- The Project leads will assess the submission and checklist and when accepted, schedule a 20-minute presentation for the submitter in the next available community call time slot.
a- The presentation shall be made available to the project leads at the latest 1 week before the scheduled community call.
b- The presentation shall explain why and how the submitted solution qualifies against this Immersion Requirements document.
3- A 60-minute interactive review will be scheduled by a community committee:
a- The committee is overseen by one of the immersion project leads.
b- The committee will consist of the Immersion Requirements authors which are invited by the project leads.
c- All materials (checklist, community presentation, community questions and other collateral) are shared with the reviewers at least 1 week before the review meeting.
i- There will be 1 week to review materials, request additional feedback and ask follow-up questions after the review session;
ii- There will be 1 additional week to allow for all votes to be cast;
iii The committee will approve, decline or provide feedback to resolve before approval, based on the Immersion Requirements.
4- The community committee is formed as follows:
a- All authors of the Immersion Requirements document are invited to be panelists;
b- One of the immersion project leads oversees the qualification process and panel;
c- Each company represented in the panel counts as 1 vote (excluding the qualifying company);
d- A quorum is achieved with a minimum of 5 votes present in the panel.

Immersion Project and Workstreams

Get Involved

If you would like to get involved in the workstreams, please send a message to the workstream leaders and sign-up on the mailing list which we use to communicate announcements on project status, meeting schedules, and agendas.

- ACS Mailing List
- ACS Immersion Mailing List

Project schedule overview

Note: All calls are scheduled and maintained in US Pacific time zone and follow US/Pacific DST schedules.
Scope Status Monthly schedule Timeslot Meeting link Points of contact Related documents Join

Project Community call

Main Project Call

3rd Tuesday

7:00-8:00am PT
16:00-17:00 CET
22:00-23:00 CST

- Rolf Brink(Asperitas)
- John Bean (GRC)

Main project page
Main Project Wiki page

Join this community

Material Compatibility


2nd & 4th Tuesday

7:00-8:00am PT
16:00-17:00 CET
22:00-23:00 CST

- Punith Shivaprasad(Shell)
- Kai Zhou (UL)

OCP Immersion Fluid Base Specification
Material Compatibility in Immersion Cooling whitepaper

Join this community

Immersion Requirements


3rd Wednesday

7:00-8:00am PT
16:00-17:00 CET
22:00-23:00 CST

- Rolf Brink (Asperitas)
- Michael Sakamoto (UL)

Immersion Requirements rev2 (PDF)
Immersion Requirements rev2 (DOCX)
Immersion qualification checklist (XLSX)
Immersion Requirements rev1 (PDF) - Legacy

Join this community

Immersion Cooling Hurdles


2nd Wednesday

7:00-8:00am PT
16:00-17:00 CET
22:00-23:00 CST

- David Gyulnazaryan (Independent)
- Raul Alvarez (Independent)

Workstream definition

Join this community

Power Distribution in Immersion


1st Tuesday

7:00-8:00am PT
16:00-17:00 CET
22:00-23:00 CST

- Oriol Chavanel (Submer)
- Harry Soin (AEI)

Workstream definition
Design Requirements Document

Join this community

Hardware Management for Liquid Cooling


1st and 3rd Wednesday

8:00-9:00am PT
17:00-18:00 CET
23:00-00:00 CST

- Mick Jones (Vertiv)

Workstream definition

Join this community

Signal Integrity


1st Monday

8:00-9:00am PT
17:00-18:00 CET
23:00-00:00 CST

- Kai Wang (Intel)
- Andy Young (Asperitas)

Workstream definition

Join this community

TCO Modelling for Immersion


4th Wednesday

8:00-9:00am PT
17:00-18:00 CET
23:00-00:00 CST

- Allison Boen (Independent)
- Eduard Roytman (Intel)

Workstream definition

Join this community

Warranty Guidelines for Immersion Cooled IT equipment


2nd Monday

8:00-9:00am PT
17:00-18:00 CET
23:00-00:00 CST

- Rich Lappenbusch (SuperMicro)
- Michael Cordle (Seagate)

Workstream definition

Join this community

OAI collaboration


4th Wednesday

7:00-8:00am PT
16:00-17:00 CET
22:00-23:00 CST

Invitation only

- Rolf Brink (Asperitas)
- Cheng Chen (Meta)

Request to join

Design Guidelines for Immersion-Cooled IT Equipment





- Rolf Brink (Asperitas)

Design Guidelines for Immersion-Cooled IT Equipment

Previous meetings

Community presentations

All community debrief presentations can be found here

Recordings From Past Calls

Calls overview
Month/year Community calls Material Compatibility Hardware Management Power Distribution Immersion Hurdles Immersion Requirements TCO Modelling Warranty Guidelines Signal Integrity
Feb, 2023
Jan, 2023
Dec, 2022

December 20th, 2022

December 13th, 2022

December 7th, 2022

December 6th, 2022

December 14th, 2022

December 21st, 2022
December 19th, 2022

Nov, 2022

November 15th, 2022

November 22nd, 2022
November 9th, 2022
November 8th, 2022

November 16th, 2022
November 2nd, 2022

November 23rd, 2022
November 9th, 2022

November 30th, 2022

Oct, 2022

October 4th, 2022

October 26th, 2022
October 12th, 2022

Sep, 2022

September 20th, 2022

September 21st, 2022
September 7th, 2022

September 6th, 2022

September 28th, 2022
September 14th, 2022

September 21st, 2022

Aug, 2022

August 16th, 2022

August 9th, 2022

August 17th, 2022
August 3rd, 2022

August 24th, 2022
August 10th, 2022

August 17th, 2022

Jul, 2022

July 2021st, 2022

July 6th, 2022

July 5th, 2022

July 27th, 2022
July 13th, 2022

Jun, 2022

June 21st, 2022

June 15th, 2022
June 1st, 2022

June 22nd, 2022

May, 2022

May 17th, 2022

May 18th, 2022
May 4th, 2022

Apr, 2022

April 19th, 2022

April 20th, 2022
April 6th, 2022

April 5th, 2022

Mar, 2022

March 15th, 2022

March 22nd, 2022
March 8th, 2022

Feb, 2022

February 8th, 2022

Jan, 2022

January 18th, 2022

January 25th, 2022

Dec, 2021

December 21st, 2022

Nov, 2021

November 16th, 2021

November 23rd, 2021

Okt, 2021

October 19th, 2022

October 12th, 2021

Sep, 2021

September 21st, 2021

September 28th, 2021
September 14th, 2021

Aug, 2021

August 18th, 2021

August 24th, 2021
August 10th, 2021

Jul, 2021

July 20th, 2021

July 14th, 2021

Jun, 2021

June 29th, 2021
June 15th, 2021

May, 2021

May 18th, 2021

Apr, 2021

April 20th, 2021

Historic work sessions

Legacy calls overview
Month/year Various work sessions
Jan, 2021

January 19th, 2021

Oct, 2020

October 20th, 2020

Sep, 2020

September 15th, 2020

Aug, 2020

August 18th, 2020

Jul, 2020

July 21st, 2020
July 16th, 2020

Jun, 2020

June 17th, 2020

May, 2020

May 19th, 2020

Apr, 2020

April 21st, 2020

Mar, 2020

March 23rd, 2020

Feb, 2020

February 18th, 2020

Nov, 2019

November 21st, 2019
November 19th, 2019

Oct, 2019

October 15th, 2019

Aug, 2019

August 20th, 2019

Jul, 2019

July 23rd, 2019

Jun, 2019

June 25th, 2019

June 11th, 2019

May, 2019

May 28th, 2019
May 14th, 2019

Apr. 2019

April 30th, 2019
April 16th, 2019
April 2nd, 2019

mar, 2019

March 5th, 2019

Feb, 2019

February 19th, 2019
February 5th, 2019

Jan, 2019

January 22nd, 2019
January 8th, 2019

Dec, 2018

December 11th, 2018

Nov 2018

November 27th, 2018
November 13th, 2018

Oct, 2018

October 30th, 2018
October 16th, 2018