Session: 02-04: Building Performance Analysis and Simulation

Paper Number: 137130

137130 - Computing Heat Recycle Technology Development for Industrial Heat Supply 

Abstract: 

Based on IEA data, nearly 400 TWh power was used by computing in 2021, which can generate approximately 1,300 million MMBTU computing heat.  Today, almost all the computing heat is wasted.  SAIHEAT has been developing liquid cooling and chip waste heat utilization technologies for Bitcoin mining and AI computing.  SAIHEAT established a project site in Marietta OH, which consists of computing servers, computing heat capture system, computing heat supply system, and heat consumption facility.  To capture the heat generated from server computing, container-based products called WITBOX are designed based on different types of cooling technologies.  One design called Tankbox is to apply immersion cooling technology by setting servers in tanks filled with cooling liquid.   Liquid is circulated from bottom of tank and flows through servers to capture heat generated by servers.  One design called Rackbox is to apply cold plate cooling technology by setting servers on the rack with two piping headers at side.  Cold liquid flows through the header pipe and cold plate to capture heat generated by servers.  Inside the computing heat supply system called HEATBOX, heat exchanger and pump system are designed to transfer all the heat captured from WITBOX to water and then supply to USERBOX in controlled manner.  HEATBOX is also used for water pretreatment and supply for backup cooling tower supply.  A facility called USERBOX is designed to use all the recycled computing heat for residential, commercial, and industrial applications.  Recycled heat can be dissipated though two-phase systems such as liquid to air technologies and liquid to liquid exchange or by direct hot water consumption.  Our 24/7 operation data from our WITBOX demonstrated the capability of capturing more than 95% of heat generated from computing.  Through temperature monitoring inside WITBOX and USERBOX, flow rate can be controlled by automatically adjusting pump system inside HEATBOX.   In this project, a 5,000 ft ² greenhouse USERBOX was built and heated with a floor heating system.  Hot water is circulated by HEATBOX system through pre-buried pipes into greenhouse.   The pipe is separated into two sets of piping heaters.  More than 20 sets of tubes are laid on the ground and connected to the piping heaters.  The greenhouse is heated by flowing the hot water through the flow tubing system.  The integrated 1 MW demo pilot system is built and is expected to recycle waste heat up to 3.4 MMBTUH.  By eliminating traditional natural gas heating for the greenhouse, it is estimated to reduce up to 400 pounds of carbon dioxide generation per hour. 

Presenting Author: Tao Wu SAIHEAT Inc

Presenting Author Biography: SAIHEAT Inc 2022 – Current, Tempe, AZ
CEO
● SAIHEAT is a clean computing service provider focused on liquid cooling and chip waste heat utilization technology for Bitcoin mining and Al computing.

Ambergroup (North America) 2021 – 2022, Tempe, AZ
VP – Operation & Engineering
● Determine crypto mining geographic location and project out from design, planning, implementation, construction, and operation of the facility.
● Build and lead team to operate and provide strong deliverable for crypto mining facility.

Bitmain/Bitdeer Inc. (North America) 2018 – 2021, Chandler, AZ
Director of US Projects, Director of Engineering Group
● Built a team and phase system to provide integrated solution for cryptocurrency mining data center.
● Successfully designed, constructed, powered on and operated multiple cryptocurrency mining facilities at multiple US locations.

Intel Inc. 2006 – 2018, Chandler, AZ
Material Commodity Lead/Supply Chain Engineer


EDUCATION
● Ph.D. North Carolina State University, Raleigh, NC Aug 1998-Feb 2003
● M. S. program California State University, Fresno, CA Aug 1997-May 1998
● M. S. Beijing University of Chemical Technology, P. R. China Sep 1994-Jul 1997
● B. S. Beijing University of Chemical Technology, P. R. China Sep 1990-Jul 1994

Authors: