Chapter 062 Temperature Control

The two ends of the evaporator are connected with a chilled water circulation system. The heat absorbed by the refrigerant this time reduces the temperature of the chilled water, so that the low-temperature water flows to the user end, and then passes through the fan coil for heat exchange to blow out the cold air.

How the wind system works:

The transmission method of fresh air adopts replacement type, rather than the principle of internal circulation of air-conditioning gas and the unhealthy practice of mixing old and new gases.

The outdoor fresh air will be automatically inhaled into the room through the negative pressure method, and will be automatically dusted and filtered when it enters the room through the fresh air vent installed on the bedroom, hall or living room window.

At the same time, the corresponding indoor pipelines are connected to the exhaust outlets in several functional rooms, and the formed circulation system will take away the indoor exhaust gas and concentrate it on the exhaust outlet to "exhale", and the exhaust gas will no longer be recycled. New and old winds form a good cycle.

The working principle of the coil system:

The working principle of the fan coil air conditioning system is to continuously circulate the indoor air with the help of the fan coil unit, so that it is cooled or heated through the coil to maintain the required temperature and relative humidity of the room.

[Recommendation, Mimi reading and chasing books is really easy to use, download it here and you can try it. 】

The cold or hot water used by the coil is supplied by a centralized cold and heat source.

At the same time, the fresh air centrally processed by the fresh air air conditioner room is sent to each air-conditioned room through special fresh air ducts to meet the sanitary requirements of the air-conditioned room.

Compared with the centralized system, the fan coil air conditioning system has no large air ducts, only water pipes and smaller fresh air ducts. It has the advantages of convenient layout and installation, small building space occupation, and good independent adjustment. It is widely used in temperature and humidity accuracy. Comfortable air conditioners with low requirements, many rooms, small rooms, and need to be individually controlled.

......

Why did Zhou Wenwen want to do this on a whim?

In short, as long as you know that this thing Zhou Wenwen failed, but after doing so much, Zhou Wenwen is not easy to destroy directly, so he transformed it into a positioning GPS that can sense temperature, and now, there is nothing to stop it. .

After receiving the signal from the chip, Wenwen on the ground took Feijian's launch tower on the top of the mountain, and immediately transmitted the signal to the communication satellite in geostationary orbit.

What, you ask why there are communication satellites here?

And this... well, the answer to the question is actually not that complicated. Zhou Wenwen intercepted it in the world of Watching Dawn next door, and when the satellite was turned on, he did not exhaust Zhou Wenwen to death.

Zhou Wenwen did not expect that geostationary orbit and communication satellites would be so difficult.

The geostationary orbit (or "geostationary synchronous orbit", "geostationary satellite orbit", "clark orbit") refers in particular to a perfectly circular geosynchronous orbit of a satellite or artificial satellite perpendicular to the earth's equator.

Geostationary orbit is a type of geosynchronous orbit.

Synchronous orbit means that the orbiting object (usually a satellite) has the same average orbital period and the same direction as the orbiting object (usually a planet).

A synchronous orbit in the shape of a ring and at the equator is called a geostationary orbit.

Above the equator, the altitude of synchronous orbit is 35,900 kilometers.

A concept in satellite orbit theory.

That is, a satellite orbit that is close to the synchronous motion of the earth's rotation, or a satellite orbit whose orbital period around the earth is the same as the earth's rotation period.

The orbit of this satellite is close to a circle, with a radius of about 36,000 km.

When the satellite orbits the earth, there is almost no relative motion relative to the ground, as if it is suspended in the air, so it is called a geostationary satellite. Intercontinental communication satellites, weather satellites, and solar power stations planned to launch in the 21st century are all flying objects. is to take advantage of this orbital characteristic.

The first person to propose the use of geostationary satellites for communication was Herman Potosinik, who proposed the idea in 1928 (but it was not widely known).

Geostationary orbit is mentioned by Gee O. Smith in the first story in the series of science fiction Veeral, which is the first time geostationary orbit has appeared in popular literature, but Smith does not delve into it.

In 1945, the famous British science fiction writer Arthur C. Clark published an article entitled "Extra-Terrestrial-RocketGiveWorldwideRadie?" in the wireless world, which explained the principle of geostationary orbit in detail, which also made the geostationary orbit. The concept spread widely.

Clark admits that the concept of geostationary orbit he introduced was linked to Smith's ThepleteVeeral.

Clark was the first to elucidate the role of geostationary orbits for broadcast and relay communications satellites.

So, sometimes the geostationary orbit is also called the Clark orbit.

Correspondingly, there is an area 35,786 km above sea level called the Clark Belt, which lies in the equatorial plane and can be used as a geostationary-like orbit.

In addition, the circumference of Clark's orbit is approximately 265,000 km.

A satellite or artificial satellite orbiting the earth in this orbit is always at the same position on the earth's surface.

Its orbital eccentricity and orbital inclination are both zero. The movement period is 23 hours, 56 minutes and 04 seconds, which is consistent with the rotation period of the earth, and the orbit radius is 42164.169km.

Since the sub-satellite point trajectory of a satellite moving in a stationary orbit is a point, an observer on the surface can always observe the satellite at the same position in the sky at any time, and will find that the satellite is stationary in the sky, so many artificial Satellites, especially communication satellites, mostly use geostationary orbits.

The geostationary orbit service technology is of great significance in promoting the development of economy, national defense and space technology~lightnovelpub.net~ The artificial satellite is relatively stationary with the ground and fixed over the equator. In a prograde circular orbit, the altitude is 35,786 kilometers above the ground, and the speed of the satellite is 3.07 kilometers per second.

A single satellite can cover about 40% of the Earth's area.

This orbit is commonly used by weather satellites, communication satellites and broadcast satellites.

In addition, some satellites of my country's Beidou satellite navigation system also use this orbit.

Radius comparison chart for Geostationary Orbit, Galileo Positioning System, Global Positioning System (GPS), GLONASS, BeiDou Navigation Satellite System, International Space Station and Hubble.

In addition, the radius of the lunar orbit (385,000 km) is about nine times that of the geostationary orbit.

Geostationary satellites must all be distributed in the same ring above the equator.

During operation, in order to avoid bad frequency interference of satellites, the satellites in the geostationary orbit need to be placed separately, which means that the orbital position is limited, and therefore, the number of satellites running in the geostationary orbit is also certain.

Conflicts will arise between different countries competing for the same geostationary orbit location (such as countries with the same longitude but different latitudes) and frequency resources, and such conflicts can be resolved through the orbit allocation mechanism of the International Telecommunication Union.

In 1976, eight equatorial countries adopted the Bogota Declaration, claiming that these countries have sovereignty over the geostationary orbit over their territory, but this declaration was never recognized by the international community.

......

To be continued

Chapter 063 Announcement of the difference between the two tracks