Intelligent Steady-State Thermal Transmission Property Measurement System

The Intelligent Steady-State Thermal Transmission Property Measurement System is designed to determine the thermal insulation performance of building components and industrial assemblies. It is used to measure key physical parameters such as thermal conductivity (λ) and thermal transmittance (U-value) under steady-state conditions.

The system is suitable for testing walls, building envelopes, glazing systems, and various homogeneous and non-homogeneous materials, including plastics, rubber, glass, fibers, EPS boards, XPS boards, foamed concrete, hollow glass units, wood panels, and other construction and insulation materials.

The equipment integrates computer-based automatic control, data acquisition, calculation, display, and report output, offering fast measurement speed, high accuracy, low noise, and a high degree of automation. During testing, temperature and heat flow values are displayed in real time through the software interface.

Applications

This system is widely used in the following application scenarios with specific test products:

Building envelope testing:

External walls, composite walls, curtain wall systems, prefabricated wall panels, sandwich panels.

Insulation material testing:

Rock wool boards, glass wool boards, EPS insulation boards, XPS insulation boards, polyurethane foam panels, phenolic foam boards.

Glazing and window systems:

Single glazing, double glazing, triple glazing, insulating glass units (IGU), Low-E glass assemblies.

Industrial insulation products:

Insulation panels for cold storage, industrial furnaces, HVAC ducts, pipeline insulation modules.

Polymer and composite materials:

Plastic sheets, rubber plates, fiber-reinforced composites, foamed plastics.

Quality control and certification:

Building material manufacturers, third-party testing laboratories, inspection institutes.

Research and education:

Universities, research institutes, and laboratories conducting thermal performance and energy-efficiency studies.

Standards

GB/T 13475-2008 — Thermal insulation — Determination of steady-state thermal transmission properties — Calibrated and guarded hot box method

JG/T 10294-2008 — Determination of steady-state thermal resistance and related properties of insulation materials — Guarded hot plate method

ISO 8990 — Thermal insulation — Determination of steady-state thermal transmission properties — Calibrated and guarded hot box

ISO 8302 — Thermal insulation — Determination of steady-state thermal resistance and related properties — Guarded hot plate apparatus

ASTM C1363 — Standard test method for thermal performance of building materials and envelope assemblies by hot box apparatus

EN 1934 — Thermal performance of buildings — Determination of thermal resistance by hot box method

Product Advantages

Excellent thermal insulation design using high-performance XPS boards, with no internal air gaps to minimize heat loss.

Integrated hot chamber, cold chamber, and guarding chamber design improves temperature uniformity and test accuracy.

Equipped with casters and adjustable leveling feet for easy movement and precise leveling.

Powder-coated electrical control cabinet provides high mechanical strength and corrosion resistance.

Stable and efficient refrigeration system with low noise and long continuous operating capability.

Multiple temperature sensors uniformly distributed on hot and cold surfaces ensure high measurement accuracy.

Imported PLC control core with temperature expansion modules reduces interference and enhances system stability.

Solid-state relay outputs improve reliability, service life, and operational safety.

PID automatic temperature control with software self-tuning ensures precise temperature tracking.

Fully automatic computer control of hot chamber, cold chamber, and ambient temperature.

Real-time temperature monitoring, curve display, automatic calculation, data storage, and report generation.

User-friendly PC interface with automatic test execution, data export, printing, and historical data query.

Technical Parameters

Specimen size: 1880 mm (W) × 400 mm (max thickness) × 2000 mm (H)

Metering area: 1200 mm × 1200 mm

Power measurement accuracy: Class 0.5

External wall thermal resistance: > 3.5 (m²·K)/W

Minimum specimen thermal resistance: ≥ 0.1 (m²·K)/W

Maximum hot chamber heating power: 0.5 kW

Metering chamber temperature: Ambient to 50 °C

Guard chamber temperature: Ambient to 50 °C

Cold chamber temperature: –20 °C to ambient

Temperature control accuracy: ±0.3 °C

Power supply: AC 380 V, three-phase five-wire system

FAQ

1. What is this product?

It is a steady-state thermal testing system used to measure thermal conductivity and thermal transmittance of building components and insulation materials.

2. What is it used for?

It is used to evaluate thermal insulation performance, energy efficiency, and heat transfer behavior of walls, insulation boards, glazing systems, and industrial insulation products.

3. What types of this product are available?

The system can be configured for U-value measurement only or upgraded to simultaneously measure heat flow parameters, depending on testing requirements.

4. What industry problems can it solve?

It helps manufacturers and laboratories accurately assess insulation performance, optimize material design, ensure compliance with energy-efficiency standards, and improve building thermal performance.

5. How is the system operated?

The specimen is installed between the hot and cold chambers, test parameters are set through the computer interface, and the system automatically controls temperature, collects data, calculates results, and generates test reports.