With the improvement of living standards, people have higher and higher requirements for the comfort of living and working environment. Central air conditioning has brought us a comfortable cooling and heating effect, so that our living environment has become better and better, which also led to the development of central air conditioning. Under the competition of many central air-conditioning brands and the higher and higher requirements of users, the industry has a "three-point product, seven-point installation" evaluation of central air-conditioning. It can be seen that the installation of central air-conditioning is particularly important. Thermal insulation materials make great contributions to energy conservation and safety in the use of central air-conditioning. Choosing appropriate thermal insulation materials and strict construction is an important way to ensure energy conservation and safety of central air-conditioning.

The material of the central air conditioner is mainly rubber and plastic insulation material, so it is necessary to choose from the thermal conductivity, density, moisture resistance, fire resistance, environmental protection and installation reliability.

Thermal conductivity of insulation materials to be low

The basic index of the advantages and disadvantages of central air-conditioning insulation material is thermal conductivity, which is related to the heat loss of central air-conditioning. The lower the thermal conductivity, the less heat is lost in the transmission process, the more energy is obtained indoors, and the use of central air-conditioning is more energy-saving.

Under normal circumstances, a material with a thermal conductivity of 0.2W/(mk) can be used as a thermal insulation material. The central air conditioner must also comply with this principle, and the thermal conductivity of the thermal insulation material used should be lower. According to the regulations: when the temperature is 40 ℃, the thermal conductivity of the thermal insulation material is not more than 0.041W/(mk); When the temperature is 0 ℃, the thermal conductivity of the thermal insulation material is not more than 0.036W/(mk); When the temperature is -20 ℃, the thermal conductivity of the thermal insulation material is not more than 0.034W/(mk). It can be seen that the thermal conductivity directly affects the energy consumption of air conditioning. The lower the thermal conductivity, the more energy-saving the use of central air conditioning, and the higher the thermal conductivity, the more energy-consuming the use of central air conditioning.

The density of insulation materials to be large

When we choose the central air conditioning insulation material, the guide will come up with several insulation materials for comparison, which will visually see the density of insulation materials, why is this? Of course, price comparison is not the main factor, the most important thing is to understand the performance of insulation materials through density. If the density of the selected insulation material is too small, it will not only cause the loss of heat transmission in the air conditioning pipeline, but also easily condense water droplets on the outside of the insulation pipe. In serious cases, it will also cause dripping from the air conditioning tuyere, stagnant water in the air duct, water seepage from the ceiling and mildew, etc., which will seriously affect the use experience of the central air conditioner and cause damage to the decoration.

The moisture resistance of insulation materials should be high

The moisture resistance performance of the insulation material refers to the ability of the insulation material to resist water vapor penetration, which affects the service life of the insulation material and the energy consumption of the central air conditioner. According to the regulations, the humidity resistance factor of the thermal insulation material should not be less than 1500, but with the increase of service life, the thermal insulation material will gradually age. If the humidity resistance factor of the thermal insulation material is very small, the more easily the thermal insulation material penetrates into the water vapor from the gap, thus speeding up the aging speed, and also causing the thermal conductivity of the thermal insulation material to increase, thus reducing the thermal insulation effect.

The fireproof performance of thermal insulation material is better

The safety of insulation materials is mainly reflected in the fire performance above, the most common insulation material fire rating needs to reach B1 level, open flame is difficult to burn. If the fireproof performance of the selected thermal insulation material is relatively poor, it is easy to have potential safety hazards under certain circumstances. When there is a fire, the thermal insulation material with poor fire resistance not only fails to achieve flame retardant fresh fruit, but accelerates the spread of the fire, thus bringing potential safety hazards and economic losses.

The environmental protection performance of thermal insulation materials is strong

The environmental protection of thermal insulation materials is mainly reflected in the environmental protection. The higher the environmental protection, the higher the safety of indoor air conditioning. Thermal insulation materials need to withstand the high temperature and low temperature of central air conditioning refrigerant. Under high temperature conditions, thermal insulation materials are more likely to volatilize harmful substances. The most intuitive experience is that central air conditioning will blow abnormal smell (plastic burning smell or odor) because thermal insulation materials volatilize harmful substances.

The installation reliability of thermal insulation materials should be stable

The installation reliability of thermal insulation materials is related to the toughness of materials. When thermal insulation materials are installed and fixed, iron hoops or plastic hoops are needed. If the stability of the insulation material is not high, it will shrink or expand after a period of use, which will easily cause the shaking of the air conditioner fixing parts, thereby generating noise in the ceiling, reducing the insulation capacity of the insulation material and increasing the risk of condensation.

The proportion of thermal insulation materials in central air conditioning is relatively small, but the selection of thermal insulation materials needs very high indicators. In the face of the dazzling array of thermal insulation materials in the market, we should not only pay attention to the price of thermal insulation materials, but also pay attention to other performance indicators of thermal insulation materials. We should start with the thermal conductivity, density, moisture resistance, fire resistance, environmental protection and installation reliability of thermal insulation materials, so as to improve the environmental protection, safety and energy saving of central air conditioning.