The heat preservation work in the greenhouse can be accomplished by using side insulation and top inner insulation curtain (figure 4), as well as internal and external sunshade curtain and top skylight. The heat preservation work can be carried out 2 hours before sunset. Close the top skylight 2 hours before sunset, expand the internal heat preservation, and then gradually expand the internal sunshade and side insulation. All the internal heat preservation, inner sunshade and side heat preservation will be carried out before sunset. If necessary, external shading can also be fully carried out for thermal insulation. When the external solar radiation is less than 300W/m2 (blade stomata closed) and need heat preservation, you can directly turn on internal heat preservation, side heat preservation and internal shading, and close the top skylight at the same time.
Sunshades protect telescopes, reflecting light and background heat from the sun, earth and moon into space. The observatory must maintain a low temperature in order to complete groundbreaking scientific research in infrared light, which is invisible to the human eye and feels like heat.
It is beneficial to the growth of spinach. If you encounter problems in the actual planting. Feel free to contact us. The steel bar is 25 centimeters high and the exposed wall is 6 centimeters. The greenhouse of the workshop is required to set up a workshop at one end of the greenhouse, leaving the door on one side of the gable, and the workshop should not be too high to avoid shading. The effect of the skirt wall is mainly wind shield, waterproof and fixed arch frame. The embedded parts of the skirt arch frame should correspond to the embedded parts of the back wall arch frame. The thermal insulation performance of the facility greenhouse is poor. Especially in summer and autumn, the lunchtime temperature is easy to be too high. Cover sunshade, roof cover sunshade, commonly used sunshade net and grass curtain, cover 2 layers of sunshade net on the roof, inner plastic film. The outer layer is about 15cm~20cm away from the roof, and hangs out the 15m~2m on both sides of the greenhouse to form an outer corridor to prevent direct sunlight on both sides, and the straw curtain is directly covered on the plastic film.
1. Keep warm and protect against cold. The cold prevention work should not be relaxed, and the ditches should be cleared around the vegetable fields to ensure the smooth flow of drainage and irrigation, seal and fill the holes and cracks in the greenhouse film, and according to the change of air temperature, the small arch shed can be covered with sunshade net, straw curtain or non-woven fabric at night. increase heat preservation capacity.
The car sunshade curtain can prevent the light from entering the car, reduce the heat inside the car to a certain extent, and prevent leather seats and dashboards from being damaged by ultraviolet rays.
The car key door can be pulled out in two different gears, one of which is powered by a CD player. I just got it and changed a battery when I ran out of power. When I first got it, there was a noise in the back of the rear seat, the right rearview mirror was loose, the electric adjustment of the rearview mirror was out of order, and the speedometer did not work (this fault was cured by myself after changing the battery). The brightness of the gear display light is very low (the CD player does not read the disc smoothly, the front fog lamp is not bright, the rearview mirror reading lamp and the sunshade make-up mirror light are not lit (the wire is not connected when the front car owner is packing the ceiling), and the right front window rises slowly. Valve cover and steering assist tubing seep oil.
The dashboard has a larger inch TFT color multimedia display. Toyota Sena existing car configuration: 2020 extended Sena four-wheel drive co., Ltd leather large screen double skylight ceiling DVD mahogany interior JBL audio electric side door electric rear door reflective double electric seat luggage rack privacy glass sunshade central storage box multi-function steering wheel fog sense xenon automatic air conditioning power folding rearview mirror and auxiliary rearview mirror heating front seat heating drive computer small screen electricity Eye movement card smart card starts tire pressure sensing constant speed cruise explosion-proof tire 10 wheels 18 wheels steering wheel heated LED drive light ring shadow radar ranging lane deviates from the last row of charging sockets for auxiliary new navigation second row charging port.
According to the low orbit altitude and the geometric model of the satellite, we have designed a radio frequency permeable sunshade for the satellite, which can prevent light from reaching all the diffuse parts of most satellite bodies and bodies. The visor is laid flat on the chassis during launch and unfolded during satellite separation from Falcon 9. The sunscreen completely blocks the light from reaching the antenna, thus preventing the light from being reflected from the diffuse antenna. This method not only avoids the thermal effect of the darkening of the antenna surface, but also has a greater impact on the brightness reduction. As mentioned earlier, the first VisorSat prototype was launched with the eighth batch of star chains, and we will install these black mirror sunshades on all satellites after June.
First of all, from the environmental control system of multi-span greenhouse, electric sunshade, electric film (window opening) ventilation, electric thermal insulation quilt, electric fan water curtain cooling have been realized, and the environmental control ability of greenhouse is more stable and reasonable. work efficiency is higher, do not need manual operation, just press the switch of the distribution cabinet.
Foshan Chenghang plastic Technology Co., Ltd. for you a detailed interpretation of the UOJWGl Guangzhou outdoor sunshade how much a square of the relevant knowledge and details, sunlight board set lighting, heat preservation, sound insulation in one, sunscreen, can also be heat preservation and light transmission, can be used for greenhouse, furniture canopy, office sound insulation, outdoor advertising light box and so on. In foreign countries, in addition to supporting the structure, the pure polycarbonate material quantity of large-scale bright lighting house, a sunshine, crystal transparent, warm and annoying.
A: the advantage of car sunshade is to block the sun, to a certain extent, to reduce the burning heat inside the car, to prevent leather seats and dashboards from being exposed to ultraviolet light, and to increase privacy, and it is not clear to see inside and outside the car. can increase safety factors.