Heat transfer performance test

Test Background

The core function of coolant is to transfer heat. Heat transfer performance parameters such as thermal conductivity and specific heat capacity directly determine its heat dissipation capacity under the same flow rate, and are the key basis for system design and selection.

Test Introduction

The heat transfer performance test evaluates the thermophysical properties of the coolant at different temperatures through thermal conductivity testing, heat dissipation efficiency comparison tests and specific heat capacity tests, providing data support for system thermal design.

Testing Objectives

Determine the thermal conductivity of the coolant at different temperatures

Verify whether the specific heat capacity meets the design expectations

Compare the heat dissipation efficiency of different coolants

Provide thermophysical property data for the CDU flow control strategy

Test Standards

ASTM D2717 Liquid thermal conductivity test

ASTM E1269 Specific Heat Capacity Test

YD/T 3982-2021 Requirements for heat transfer performance

Customer-defined Comparative Test Method

Applicable Products/Fields

Suitable for the selection of various liquid cooling working fluids, ratio optimization, and performance comparison and verification.

Test Content

Thermal conductivity test: Measured by the hot wire method or the steady-state method

Specific heat capacity test: Differential Scanning Calorimetry (DSC)

Heat dissipation efficiency comparison: Comparison of temperature rises of different coolants under the same working conditions

Temperature-performance curve plotting: Changes in heat transfer performance at different temperatures

Project Advantages

High-precision thermal conductivity meter (±2% accuracy)

DSC specific heat capacity test (temperature range: -40°C to 100°C)

Provides a complete heat transfer performance data report

Laboratory Configuration

Thermal conductivity tester (hot wire method)

Differential scanning calorimeter (DSC)

Heat dissipation efficiency comparison test bench

Constant temperature circulating bath

FAQ
Q: How much higher is the thermal conductivity of water than that of ethylene glycol? A: At 25°C, the thermal conductivity of water is about 0.6 W/m·K, and that of ethylene glycol is about 0.25 W/m·K. Therefore, the heat transfer performance of pure water is better than that of ethylene glycol solution.