The box is composed of structural materials and thermal insulation materials to form a space for storing food and prevent internal and external heat transfer. A box usually includes an outer box, an inner container and an insulation layer. The refrigerator liner (liner) is generally vacuum molded with ABS or HIPS board, and the thickness is below 1 mm, which is white and smooth. Polyurethane foam is widely used in thermal insulation materials, which has excellent thermal insulation performance, and the thermal conductivity changes little after long-term use.
Extended data:
Environmental temperature influence
The power consumption of freezer is divided into rated power consumption and actual power consumption. Rated power consumption refers to the electric energy consumed by the refrigerator when the ambient temperature is 25℃ (the average temperature of the refrigerator is 5℃, and the highest temperature of the refrigerator is-18℃) for 24 hours. The actual power consumption refers to the electric energy consumed by the refrigerator in actual use.
The actual power consumption of the refrigerator is sometimes higher than the rated power consumption and sometimes lower than the rated power consumption. The actual power consumption is different due to different refrigerator environments, different food storage capacity, different temperature control in the cabinet, different door opening times and different time length. The higher the ambient temperature, the more food is stored, the lower the controlled temperature in the cabinet, the more times and the longer the door is opened, and the greater the power consumption of the refrigerator. Conversely, the smaller the power consumption.
1. When the ambient temperature rises, the refrigeration of the freezer will slow down, and the temperature in the freezer will slowly drop, resulting in a longer start-up time and an increase in power consumption.
2. With the increase of ambient temperature, due to the large temperature difference between the inside and outside of the refrigerator, the heat dissipation speed of the insulation layer of the box will also be accelerated, resulting in more heat dissipation losses, resulting in shorter downtime and longer response start-up time, resulting in increased power consumption.
3. According to the experimental data, when the ambient temperature reaches 32℃, the power consumption is about twice that of 25℃, and the power consumption at 30℃ is about 1.6- 1.8 times that of 25℃.