It can reduce the harm of cold current. When the temperature in the shed is below ℃ for a long time, the mulch such as straw bag non-woven sunshade net should be covered in the greenhouse at night to prevent frost damage and take basin fire or furnace fire to heat temporarily. Open fire can not be used when heating, in order to prevent smoke damage, it is necessary to set up a flue to put harmful gases outside, focusing on the heat preservation and anti-freezing of vegetables and seedlings in the greenhouse. For eggplant seedlings which are in the early stage of raising seedlings, measures such as artificial light supplement and temperature increase can be taken. Prevent seedling frost injury or overgrowth; cover should be removed properly during rainy days.
(2) adjustable shading facilities should be used in ultra-low energy consumption buildings. The heat absorbed by the sun absorbed by the external sunshade surface can be adjusted automatically or manually according to the sun height angle and outdoor weather conditions, and the proportion of the sun absorbed by the external sunshade surface is smaller than that of the inner or middle shade. It is the most suitable shading form for ultra-low energy consumption buildings. The schematic diagram of the adjustable external sunshade and adjustable sunshade of the lifting louver is shown in figure 10.
In the hot summer sun, the temperature in the car can rise to the point where it is impossible to enter, and car shading is a convenience that can slow down the warming rate. Many car sunshades on the market are called car sunshades, some are suitable for affixing on the outside of the car, some can be fixed in the car, and can also be subdivided into front windshields or side windows, plus the size and function are not the same.
In order to prevent the car from being hurt by the sun, many people will buy sunshade for the car. As we all know, the main purpose of car shading is to block the scorching sun, which can reduce the temperature inside the car to a certain extent, and protect leather seats and dashboards from ultraviolet rays.
The sunshade of the canopy is made of high impact resistance polycarbonate material, and its strength is about 200 times that of glass. Raw materials are imported from Germany and processed at home. The use of double-sided co-extrusion technology to add anti-ultraviolet materials can effectively shield more than 98% of ultraviolet rays, protect automobile top paint, and more effectively control continuous heating. At the same time, it also has flame retardant effect and can be used for more than 30 years in the environment of-30-60 ℃ (thermal deformation occurs at 137 ℃). The rain shed falling pipe is made of high-strength aluminum alloy with a unique and user-friendly design to avoid secondary pollution to you when the ceiling water falls to the ground. The utility model has the advantages of reasonable structure, easy cleaning and convenient removal of dirt in the pipeline.
Fire and rescue workers dug puddles for the whales with their bare hands, then covered them with wet towels and kept them moist, while other rescue workers at the scene used umbrellas to artificially hold up “sunshades” to cool the whales. The temperature at the scene is above 36 ℃ and someone has fainted from heatstroke.