Exposed to sunlight during the day, the largest heating area is the film coverage, and the largest heat dissipation at night is also the film coverage. Because the film coverage area is larger, so the thermal insulation effect of the film coverage is very important. Therefore, it is necessary to do a good job in the protection of film coverage. The shading system at the top of the greenhouse is divided into external shading, internal shading and internal heat preservation system, which are controlled by computer. The weather station system on the outside of the shed might as well monitor the wind direction and temperature at any time. The configuration of the greenhouse sunshade system is beneficial to the accumulation of reducing heat in the greenhouse, and the comprehensive temperature of crops under the sunshade is actually lower than that directly reflected by the open sun.
Because the car audio is mostly installed in the upper part of the dashboard, in order to avoid the exposure of the sun, the effect of using sunshade is better. If the door and window sealing strip is not strict, it should be replaced, otherwise the loudspeaker is easy to rust and damage, or even cause short circuit to burn the main engine. The specific heat of the circuit board and plastic components in the car audio mainframe is different, so it is affected by the temperature change to a different extent. In the scorching sun, it is good to use the sunshade to resist the scorching sun and avoid the direct sunlight.
Also confirmed the current market shipping difficulties, traders wait-and-see mood of the atmosphere. Recently, the technical overhaul of the second-line steel mills has increased in order to reduce the pressure of the steel mills themselves. Recently, it is rumored in the market that the pressure of project rebate has increased, and the consideration of site supply has increased in the later period. It is expected that the overall market will still be weak, and it is difficult to improve the decline. This kind of flower planting greenhouse is widely used in most areas, especially in the south. The single-family arch shed is mainly made of plastic-coated steel pipe or galvanized steel pipe, the surface is covered with film, and air vents are added on both sides. The utility model has the advantages of simple structure, low cost, easy construction and maintenance, long service life and strong resistance to wind and snow load. Its big deficiency is that the heat preservation capacity is low and the operation cost is high in winter, so it is suitable for breeding non-tropical flowers with low temperature requirements. Of course, we can add two-layer film on the original basis, increase the curtain machine quilt and other thermal insulation equipment, sunshade can effectively improve the arch shed temperature.
Do a good job in repairing and consolidating the damaged greenhouse of Dendrobium candidum. First of all, repair the damaged greenhouse film and close the greenhouse film to prevent cold air from entering the greenhouse. Generally adopt the form of “greenhouse + middle shed + small shed” or “greenhouse + sunshade + middle shed” to carry on the greenhouse multi-layer covering heat preservation treatment. Then reinforce the Dendrobium candidum greenhouse. Along the longitudinal axis of the large (medium) shed, a support such as bamboo is used to support and strengthen the roof every 2-3 meters, so as to improve the compression resistance of the shed and prevent the shed from falling under snow pressure. If there is external shading equipment on the scaffolding, the shading net on the external shading should be tightened to prevent damage caused by snow pressure. Special snow sweeps should be provided.
Changshu Automobile Accessories Co., Ltd. is committed to the R & D, production and sales of passenger car interior parts, including door guard, dashboard / sub dashboard, sunshade panel, coat rack, door post, luggage compartment interior, storage box, spare tire cover, carpet and sound insulation pad. After years of development, Changshu Auto Decoration has gradually become one of the main interior parts suppliers of automobile factories, and has formed a strong competitiveness in the middle and high-end product market, and established its own brand and industry status.