IEC 60335-2-24 Frost Accumulation Water Evaporation Tester

The LS-B65 Frost Accumulation Water Evaporation Tester is designed to precisely simulate and measure frost accumulation in refrigerating appliances, fully compliant with IEC 60335-2-24 Clause 11.102 and Annex BB. It utilizes a controlled water evaporation method to generate frost under standardized conditions, ensuring accurate evaluation of defrosting system performance in refrigerators, freezers, and similar appliances.

Specifications:

1. Frost Generation System
•  Heat Source：Built-in controllable heat source (precise power adjustment) to evaporate measured water, minimizing extraneous heat loss to the appliance cabinet.
•  Structure：Integrates a thermal-insulating block enclosure (as per IEC 60335-2-24 Figure BB.1/BB.2 design) with a vertical central hole. Equipped with a high-thermal-conductivity evaporating dish base + low-thermal-conductivity walls, ensuring stable evaporation conditions.

2. Installation & Operation
•  Positioning：Designed for mounting at the geometric center of the refrigerating appliance cabinet. Supports external electrical connection for voltage adjustment and power measurement with the cabinet door closed.
•  Water Supply：Configured with a small-bore tube for interval-based water injection (no continuous flow required). Automatically calculates water volume based on cabinet gross volume (follows “2 g water per liter per week” standard rate).

3. Performance Parameters
•  Evaporation Rate：Max ~2 g/h (at 4 W input, water at cabinet temperature), meeting standard test efficiency.
•  Adjustability：Adapts to different defrost intervals (e.g., for a 140 L cabinet with twice-weekly defrost, supplies 140 g water as per IEC 60335-2-24 Annex BB NOTE).

4. Safety & Precision
•  Energy Control：Ensures complete water evaporation without excessive energy input, avoiding cabinet overheating.
•  Data Traceability：Records power, water volume, and evaporation time for compliance documentation.

IEC 60335-2-24 Figure BB.1

IEC 60335-2-24 Figure BB.2