Principle of water curtain of mining machine
Wet curtain (water curtain) cooling mainly uses the physical principle that water absorbs the heat in the air in the process of water evaporation to make the air temperature drop. In practice, it is used with negative pressure fan, and the wet curtain is installed on the gable or side wall at one end of the closed house
the fan is installed on the gable or side wall at the other end, the cooling fan draws out the indoor air, creates negative pressure, forces the outdoor air to flow through the porous wet curtain surface, transforms a large amount of heat in the air, and forces the air entering the room to rece 10-15 ℃, and continuously introces it into the room for heatstroke prevention
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advantages of cooling water curtain:
1. High efficiency and energy saving: water curtain cooling system uses the cooperation of fan and water curtain to artificially reproce the physical process of natural water evaporation cooling, and the power consumption is only one tenth of that of traditional air conditioning
Ventilation: with the cooperation of the whole system, the exhaust fan can quickly exhaust the hot gas, exhaust gas and peculiar smell proced by indoor personnel and machines, avoiding the stimulation of exhaust gas and peculiar smell to human body. The whole indoor air can be updated once a minute at the fastest, which is the effect that ordinary air conditioning can't achieve Improve work efficiency: solve the problem of workers' attention loss caused by heat and oxygen deficiency. The use of water curtain cooling can not only solve the stuffy problem of the workshop, but also proce negative ion oxygen when the water evaporates to rece the temperature, increase the oxygen content in the air, regulate the mood, relieve fatigue, and improve the work efficiency4. Health and environmental protection: the system uses water as refrigerant, and there is no pollution to the environment in the process of manufacturing and using? In addition to recing the air humidity, the water curtain can also purify the st and particles carried by the external air. High efficient circulation of fresh air can effectively prevent the incidence of occupational diseases and infectious diseases
Hangzhou south railway station - Hangzhou passenger transport center
5:30-18:00
ticket price: 4 yuan, 3 yuan per year in March, April, October and November
available IC cards: all kinds of IC cards are in common use
remarks: Xiaoshan company, passing through high speed, one person one seat, temporarily stopping camp in case of high speed road closure, one-way 45 minutes. The departure interval is 30 minutes.
How can I get my world? What's the use of my world? Let's follow Xiaobian to find the answer
function of gravel:
gravel is a kind of square object, which can be found in natural mine cave, underwater, beach and lower boundary
gravel will fall when there is no lower support. If there is no sticky piston, it will not fall. Therefore, when using gravel, if it is hit by gravel, it will cause damage to players. In the process of falling, the gravel will decompose into gravel resources. After the gravel is excavated, there is a 10% chance that it will drop chert. Chert can be used to make flint and arrow. The gravel blocks that have not dropped chert can be picked up and placed, and then the gravel can be re excavated. If the chert falls, the gravel resources will no longer fall. Any tool that digs the gravel will have a chance to drop chert, TNT can also be used to blast gravel
the main function of gravel is to quickly build pillars, with which players can reach very high places; Gravel can also be used to quickly fill a lake or magma pool. When you encounter a monster, you can also use gravel to fall to cause damage<
gravel acquisition:
if players want to collect gravel from the long pillar, they can dig out the box under the supporting box at the bottom of the gravel and put on any kind of local box. Then the supporting blocks are removed, and the sand is quickly decomposed into resources after falling to the local blocks
of course, players can also go to natural mines, underwater, beach and lower boundary to collect
the above is all about how to get my world gravel
what is the use of my world gravel
1. Walk about 130m from Hangzhou south railway station to Hangzhou south railway station (Xiaoshan) station
2. Take no.328, pass 7 stations,
arrive at Hangzhou passenger transport center station
3. Walk about 60m, arrive at Hangzhou bus passenger transport center
bus route: B-4 section
→
330, 28.3km in total length
1 Walk about 10 meters from Hangzhou Jiubao passenger transport center to Hangzhou bus passenger transport center station
2. Take 4 section of B bus, pass 5 stops,
to Desheng East Village Station (or 69)
3. Walk about 160 meters to Desheng East Village Station
4. Take 330 bus, pass 13 stops,
to Xingqiao Village Station
5. Walk about 630 meters to Xingqiao town
take bus No. 328 (about 7 stations)
to
Hangzhou passenger transport center (central station)
and get off
after knowing its working principle, if you have an ordinary fan, you can make an air conditioning fan by yourself. Of course, the appearance can't be compared with that on the market. Find three large beverage bottles, buy three disposable infusion sets, drill holes on the cap of the beverage bottle, and then insert the head of the infusion set tightly into the cap. Then use the red needle to drill a hole on the plastic ring fixed by the fan net cover, one at the top, and then drill a hole about 15 cm away from the hole, a total of three holes. Insert the needles of the infusion set into the holes respectively, then fill the drink bottle with water, and tighten the bottle cap. And then the beverage bottle is tied up with a string and hung at a high place, so as to adjust the flow of the infusion set. Turn on the fan (high-speed gear), so that the dripping water will be blown out by the high-speed rotating blades. The effect is the same as that of the air-conditioning fan, or even better. If you are interested, you may as well have a try
although the air conditioning fan itself can't cool or rece the indoor temperature, according to experts, it can spray water vapor onto the human body with higher temperature. Water vapor evaporation naturally takes away some heat, so people can feel cool to a certain extent. Especially now some air conditioning fans are equipped with ice cream added to the water, the effect will be more obvious. But it is worth noting that the working principle of the air conditioning fan itself restricts its scope of application. In the north, when the air is dry, you can feel cool and wet the air by using this method. But in the south, which is already humid, the effect of using the air conditioning fan is different. The expert did a test in a family in Guangzhou, and the result showed that the temperature of the air outlet was higher than that of the air inlet. According to the expert, this is because the wind from the window directly affects the air inlet. Is it no different from a fan? Therefore, when choosing the air conditioning fan, we should first consider the environmental factors to see if it is applicable,
the advantages are as follows:
1 less investment and high efficiency
compared with the environmental protection air conditioning, the environmental protection air conditioning is 1 / 5 of the total investment of the central air conditioning
2. Low power consumption, only 1 kwh per hour
if central air conditioning and environmental protection air conditioning are installed in the same area, the power consumption is only 1 / 10 of that of central air conditioning
3. Good air quality
environmental protection air conditioning integrates ventilation, air exchange, st removal and cooling, increases the oxygen content in the space and improves the work efficiency. Natural air supply or refrigeration air supply is optional
4. The cooling effect is strong
in the south, the cooling effect of the machine can reach 4 ℃ - 10 ℃, in the hot and dry areas, the cooling effect of the machine can reach 4 ℃ - 15 ℃, and the cooling is rapid
5. Large air volume and far air supply
the maximum air volume per hour of 100 square meters is 18000-60000 cubic meters. 6. Stable performance, reliable quality, using 100 mm thick "5090 evaporation screen" cooling ability, using three blade forward swept axial flow fan blade, low noise, high efficiency
7. Adjust humidity
adjust the humidity in the workplace where the air humidity needs to be increased
8. Efficiency and convenience
the leading intelligent control can group multiple devices arbitrarily, and the remote Internet PC and mobile phone control the start, stop, refrigeration, cleaning and other functions of the unit, greatly improving the efficiency and convenience of equipment operation and management.