Truecooltech shares solutions to the condensation problem of refrigerators

1. Introduction

Condensation on glass doors under harsh working conditions such as high humidity is a common problem in the refrigeration equipment industry. If not handled properly, it may cause customer dissatisfaction or even complaints. Through scientific explanations and effective solutions, customer dissatisfaction and complaints can be significantly reduced, while improving the market competitiveness of products.

2.Causes of condensation

Condensation refers to the phenomenon that water vapor in the air condenses into water droplets on the surface of the glass when the surface temperature of the glass is lower than the dew point temperature of the surrounding air in a high humidity environment. This phenomenon is particularly common at the bottom of the glass door because the temperature in this area is relatively low.

3. Solutions and working condition classification

Based on the laboratory test results, Hisense has proposed the following classification solutions for condensation under different humidity conditions:

① Humidity ≤ 65%

Phenomenon: Slight condensation may occur at the bottom of the glass door.

Standard: The ratio of the bottom condensation area to the entire glass area is ≤ 5%.

Explanation: Under low relative humidity conditions, condensation is lighter and is normal. By optimizing the insulation performance of the glass door, the condensation area can be further reduced.

② Humidity = 75% (Pepsi Cola standard)

Phenomenon: Condensation at the bottom of the glass door is more obvious.

Standard: The ratio of the bottom condensation area to the entire glass area is ≤ 30%.

Explanation: Under medium humidity conditions, condensation will be more significant. This is because the temperature difference between the glass surface temperature and the air dew point temperature increases. By using efficient insulation materials and optimizing the structural design of the glass door, the condensation area can be effectively controlled.

③ Humidity ≥ 85% (harsh humidity conditions)

Phenomenon: Glass doors may have large areas of condensation, even in the form of flowing water.

Standard: All condensation must be accepted, and in the form of flowing water.

Explanation: Under high humidity conditions, the water vapor content in the air is extremely high, and the glass surface temperature is much lower than the dew point temperature, making condensation inevitable. This is a common phenomenon in the industry, and no manufacturer can completely avoid it.

Improvement suggestions: If customers have high requirements for condensation, electric heating solutions can be considered. By installing electric heating wires on the inside of the glass door, the surface temperature of the glass can be increased, thereby reducing condensation.

4. Laboratory test and data comparison

Through laboratory test, Hisense conducted a detailed study of condensation under different humidity conditions and recorded relevant data. The following is a comparison of some test results:

5. Customer communication

When communicating with customers, it is recommended to follow the following steps:

1. Guide customers to choose the right type of glass door: Recommend suitable products according to the customer's usage environment and needs.

For example:

Required types of freezer glass doors:

Double-layer tempered

Electric heating glass + ordinary glass

Single-layer tempered + single-layer ordinary

Single-layer tempered + single-layer Low-E

Insulating glass + double-layer Low-E

Insulating glass + single-layer tempered

Insulating glass + single-layer Low-E

2. Clarify standards and expectations: Explain the condensation standards under different humidity conditions to customers to ensure that customers have clear expectations for possible condensation.

3. Show test data: If necessary, show the laboratory test data to customers to enhance their trust in the product.

4. Provide improvement solutions: For high humidity environments, customers are advised to consider electric heating solutions to reduce condensation.

6. Summary

Condensation is an inevitable phenomenon for refrigeration equipment in high humidity environments, but through scientific classification and solutions, customer dissatisfaction and complaints can be effectively reduced. Truecooltech has accumulated rich experience through laboratory testing and practical applications, and can provide customers with professional advice and solutions to help customers better understand and accept this phenomenon.