When purchasing a refrigerated truck, especially for industries like food, pharmaceuticals, electronics, and chemicals, it is crucial to assess the quality of the insulation materials used in the refrigerated compartment. The main determinant of a refrigerated truck’s quality is the thermal insulation capacity of the truck’s body, which cannot be judged solely by its appearance. A high-quality refrigerated truck should have excellent insulation performance, be lightweight, and have a solid structure.
Here are some key factors to consider when evaluating the quality of the truck’s materials:
1. Thermal Insulation Performance:
The insulation performance of the truck’s body is closely related to its structure. To evaluate this, consider the following aspects:
- Thermal Conductivity of Insulation Material: Check the thermal conductivity and density of the insulation material. High-quality trucks typically use PU foam (polyurethane foam), which has a low thermal conductivity and excellent insulation properties.
- Insulation Layer Sealing: Inspect whether the insulation layer inside the panels is fully sealed. Trucks with high-performance insulation generally use integrated foaming technology where the entire panel is injected with foam, ensuring that the insulation material inside is unified and continuous. Some manufacturers use a “sandwich bonding” method, but this technique cannot achieve the same level of insulation continuity.
- Metal Heat Bridges: Ensure that the structure minimizes or eliminates metal heat bridges. These are areas where metal components in the walls of the truck can transfer heat, reducing insulation efficiency.
- Tightness of Panel Connections: The tightness of the connections between panels is also important. Ensure there are no gaps or spaces between the panels, as even small gaps can lead to heat leakage, reducing the effectiveness of the insulation.
- Seal Performance of Doors and Openings: Pay attention to the sealing performance of doors and other openings. Good seals prevent air from escaping or entering, ensuring the refrigeration system doesn’t need to work excessively.
2. Energy Efficiency:
Proper insulation means the refrigerated compartment maintains its temperature longer, reducing the run-time of the refrigeration unit. This translates into fuel savings and reduced emissions, making the truck more efficient and environmentally friendly.
By considering these factors, you can assess the insulation quality and overall performance of the refrigerated truck, ensuring it meets your requirements for maintaining the desired temperature and saving on operational costs.