Speaking of refrigerated trucks, in fact I have often said that under the assumption that the refrigeration unit can provide stable refrigeration conditions, how to maintain a constant temperature is also very important. In the last section, I mentioned that most of the materials for the insulation of refrigerated trucks are internal and external FRP panels, because FRP panels have unique advantages.
Generally, the daily maintenance of the refrigerated truck insulation body is mainly in Inspection of the external surface of the body, inspection of the internal surface of the body, inspection of the internal and external corners of the body, inspection of the internal floor of the body, and reflected internal lighting, and cooling Tuyere, etc. On the one hand, insulation reduces the ability of FRP to withstand pressure and is more prone to aging and deformation. On the other hand, the inner filling of polyurethane will leak out, which will affect the insulation performance of the car body.
To maintain the internal surface of the refrigerated vehicle, the temperature control should be well adjusted and the internal surface of the compartment should not be frozen. If the air humidity is relatively high, try to pack refrigerated products, especially aquatic products, and sealed packaging can reduce the humidity. It evaporates inside the chamber and reduces the possibility of icing inside the refrigerated truck. If there is a layer of ice on the inner surface of the refrigerated truck, after transporting the goods, it should be removed with an ice shovel in time to prevent the ice layer from getting thicker and thicker, which will not only affect the storage space. The compartment affects, but also increases the storage space of the car. The weight itself increases fuel consumption. You should also pay attention to the interior space to avoid damage to the inner surface of sharp goods or packaging boxes.
The effect of insulation of the refrigerator vehicle
To achieve these things, in addition to the need for high-quality refrigeration units, the overall insulation performance of the box must also be improved. How to improve the insulation performance of the refrigerator compartment? Currently, there are three types of insulation materials commonly available: Polyurethane foam, polystyrene foam and extruded polystyrene foam
Polyurethane insulation
Polyurethane foam is the most suitable excellent insulating material. Due to its low thermal conductivity, good thermal insulation performance and high strength, this material has been welcomed by Henan bingxiong, zhenjiang kangfei, Zhenjiang flight speed and other famous enterprises of domestic refrigerator and freezer vehicles. The foam density and bubble diameter of high quality polyurethane are very small. In addition, polyurethane materials are also suitable for various types of construction sheets, such as injection sheets, bonding sheets, sprays, etc.
Polystyrene insulation materials
Polystyrene foam It is a type of insulating material made of polystyrene resin. This foam is loose in quality, in thermal insulation, in small water absorption, in resistance to low temperature and easy to cut. In developed countries such as Europe and the United States, this plant is basically abandoned. Many small factories in China still use this material to save money. To achieve the same thermal insulation effect as polyurethane, the thickness of the thermal insulation material should be increased by at least {0}. The thickness increases, which leads to an increase in the return mass, a decrease in the load mass and an increase in energy consumption.
Extruded polystyrene foam is made of polystyrene resin and related additives by extrusion. This type of insulating material is similar to the honeycomb structure, its thickness is uniform, there are no cracks and fracture phenomenon. It has the advantages of high compressive strength, low thermal conductivity, low water absorption and long life. It is made which can provide better insulation and make the installation process more environmentally friendly and energy saving.
Refrigerator
With the development of society, the volume of transportation of fresh food is increasing. In order to ensure the freshness of materials, the demand for refrigerated and insulated transport vehicles is also increasing. Many companies want to improve the thermal insulation of transport vehicles, but they do not know the structure of the thermal insulation compartment panels.
Cold room insulation board is generally in the form of a sandwich panel, which is mainly composed of two types of insulation and a skin panel. The main materials used for the outer shell of the general thermal insulation enclosure board are: color steel material, glass fiber reinforced plastic material, aluminum alloy material, stainless steel material, etc. . Steel skin paint is relatively cheaper, but it is easy to produce cold bridges, which affects the overall refrigeration effect.
As the sandwich insulation material of the refrigerator insulation board, mainly three kinds of polyurethane, poly Styrene and extruded board are available on the market. After many tests, polyurethane materials are the most suitable material for refrigerator compartment panels. In terms of cold storage panels, you can choose cheaper polystyrene panels, but it is much thicker and difficult to achieve if the required temperature is very low.
FRP car board performance:
Light weight: About 30%-40% lighter than traditional aluminum steel frame.
Insulation: Composite board for refrigerated trucks and The insulation is light weight, no deformation, high density and no gap in the middle, and has excellent thermal insulation performance.
Impermeability: The surface composite sheet selected for the vehicle. Refrigerated and insulated should have good water impermeability And rigid polyurethane and other materials have large gaps and excellent waterproofing and weatherproofing.
Clean, easy to clean, and corrosion resistant: Color gel coating. Selected on the surface of FRP products is smooth and tidy on the surface of FRP products, dirt can be easily washed off, the whole surface is bright and clean. It has good stability against water vapor, acid-base, salt spray and other media, has strong aging resistance and can keep the surface smooth and clean for a long time.
Easy repair: FRP surface is easy to repair in keeping heat in the refrigerator, and after repair, it is beautiful and elegant without any obvious marks.
Unlimited molding : The shape of FRP products is not limited. Different shapes can be produced compared to steel and wood. At the same time, the production process is simple, the cost is low, and it is convenient for mass production.