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I24A7 Liquid Cooling Project Report

2024-10-12

Customer Requirements Input

Design Parameters

Request

CPU Specification

AMD SP5, 400W*2

Ambient Temperature (°C)

35

Cooling Fluid

25% PGW(Deionized Water + Inhibitor + Biocide)

Inlet Water Temperature (°C)

40

Flow Rate (LPM)

1.0 series connection

Tcase(℃)

<70℃(1LPM)

Thermal Resistance (°C/W)

≤0.075 (at 1 LPM, with Thermal Grease Dao-Dao TC-5888, Thickness 0.1mm)

Flow Resistance (kPa)

≤ Kpa (at 1 LPM, including cold plate, piping, quick connectors)

Cold Plate Pressure (bar)

≥10

Material

CU

Detailed design model and simulation model of the cold plate.

I24A7 Liquid Cooling  Project Report (1)

- Front view
- Reverse view

I24A7 Liquid Cooling  Project Report (2)I24A7 Liquid Cooling  Project Report (3)

Simulated Boundary Conditions (Set According to Working Conditions)

Simulated Boundary Condition

 Working Condition Parameters

CPU Power

400 W*2

Ambient Temperature (°C)

35

Cooling Fluid

25% PGW

Cold Plate. Inlet Temperature (°C)

40

Flow Rate (LPM)

1.0(Series Connection)

Material

Cu

Heat Source Type

AMD SP5

Skived Fin Density

Thickness:0.15mm ;Gap:0.2mm & 0.6mm

Simulation Results and Analysis 

- Simulation Results and Analysis - Working Condition 1 (1 LPM PG25 Inlet Water Temperature 40°C) Power 400W * 2
-Front View Temperature Cloud Diagram

I24A7 Liquid Cooling  Project Report (4)

- Working Condition 1 (1 LPM PG25 Inlet Water Temperature 40°C) Power 400W * 2
- The temperature difference between the inlet and outlet of the two cold plates is 11.6°C.
- Bottom  Temperature Cloud Diagram

I24A7 Liquid Cooling  Project Report (5)I24A7 Liquid Cooling  Project Report (6)

Simulation Results and Analysis 

- Working Condition 1 (1 LPM PG25 Inlet Water Temperature 40°C) Power 400W * 2
- The temperature difference between the inlet and outlet of the two cold plates is 11.6°C.
- The temperature difference between the inlet and outlet is 14.81°C.
- Water Flow Temperature Cloud Diagram.

Water Flow Temperature Cloud DiagramI24A7 Liquid Cooling  Project Report (6)

Simulation Results and Analysis 

- Working Condition 1 (1 LPM PG25 Inlet Water Temperature 40°C) Power 400W * 2
- The pressure drop between the inlet and outlet of the two cold plates is 8.03 KPa.
- The pressure drop between the inlet and outlet is 15.39 KPa.
- Water Flow Pressure Cloud Diagram

Water Flow Pressure Cloud DiagramChangsha (No DIMM) Liquid Cooling Project Report (7)

Simulation Results and Analysis 

- Working Condition 1 (1 LPM PG25 Inlet Water Temperature 40°C) Power 400W * 2
- Both sides of the DDR5 DIMM are cooled by front-mounted fans, each with an airflow of 10 CFM.
- Airflow Diagram

I24A7 Liquid Cooling  Project Report (7)

Water Flow Pressure Cloud Diagram 

- Working Condition 1 (1 LPM PG25 Inlet Water Temperature 40°C) Power 400W * 2
- The maximum temperature on the DDR5 DIMM is 111.1°C. Since this area is not in contact with the cold plate and relies solely on air cooling, experimental verification is required.
- DDR5 DIMM Temperature Cloud Diagram

I24A7 Liquid Cooling  Project Report (9)I24A7 Liquid Cooling  Project Report (10)