Fu Shuo returned to Shengshi City, met Yonghan, and said, "Let's go find Qi Yanliang. I found a lot in Shu Town. There are some things I can bring to him."
"Do you know him? Are you familiar with him?"
"He sent a notice to find a fluid calculation tool. I can help him. I have made an appointment with his secretary."
Fu Shuo and Yong Han found Qi Yanliang in an office building.
Fu Shuo said to Yong Han, "Do you know this person?"
Yonghan said: "Yes, I saw Mr. Qi on TV. Nice to meet you."
Qi Yanliang said: "Hello. Are you also a staff member of the power station?"
Yonghan said: "Yes.
he does not know. It’s not true that Mr. Qi doesn’t remember him. That year, Mr. Qi’s energy field equipment was damaged in a cave in the back mountain of Qiong City. I don’t know if the accident was serious or if the equipment has been repaired.
Fu Shuo reported to him what he had seen in several towns in Shuicheng. New computing networks could be used to aid in analyzing water flow.
Although some data analysis methods for water flow have been found, to truly understand the water flow, you need to find some professional fluid analysts.
Qi Yanliang said: "That's right, I'll pay attention to it recently."
Fu Shuo said: "This belongs to the fluid mechanics major." The fluid mechanics major is one of the second-level disciplines under the first-level discipline of mechanics. Fluid mechanics is a discipline with strong foundation and wide application. Its research objects are constantly updated, deepened and expanded with the needs of production and the development of science. Mainly focusing on aviation, aerospace, atmosphere, ocean, shipping, water conservancy and various pipelines, the study of momentum transfer problems in fluid movement is limited to the study of the movement laws of fluids and the interface between it and solid, liquid or atmosphere problem of interaction forces. Fluid mechanics problems in the fields of energy, environmental protection, chemical industry and petroleum are characterized by: small scale, low speed, and accompanied by heat transfer and mass transfer phenomena during fluid movement. The research object of fluid mechanics spreads from the momentum transfer of fluid to its heat and mass transfer. That is to say, in addition to studying the movement rules of fluid, it is also necessary to study its heat transfer and mass transfer rules. Similarly, at the interface of solid, liquid or gas, not only the interaction forces between them are studied, but also the heat and mass transfer rules between them need to be studied.
Qi Yanliang said: "There is another city upstream along the river, Sencheng, where water distribution stones were also found."
Yonghan asked: "Are these stones first found in Sencheng, then drifted to Tengcheng, and finally to Shuicheng?"
Qi Yanliang said: "The density of these stones is not much different from that of water. It is slightly denser than water. In places where the water flow is rapid, it may flow downstream with the water. Or it may be stuck in some branches. "
Yonghan said: "When I have a chance recently, I will go over and take a look."
The office of Sencheng Xunkong Company. Qin He received a call and someone reported that there were some unusual noises in the air conditioning room. This is already the 3rd time.
Qin He said to Deng Fei and Shi Rui, "Go to the air-conditioning room of the office building to check. There are still abnormal noises."
Deng Fei said: "Okay, let's go right away and make sure to find it out."
Deng Fei and Shi Rui went to the office building.
Come to the second underground floor. Walkways extending in all directions. Staggered arrangement of pipes.
From the pipes came the sound of the pump turning and the sound of water flowing.
The main thing I wanted to check when I came to the equipment room this time was some unusual and small sounds. Compared with the sound of the water pump, the sound is very small. Many people think it doesn't matter. If the sound is louder, it may be a problem with the water pump motor.
There are several central air-conditioning systems located on the first and second basement floors. Water-cooled central air conditioning system, boiler, ground source heat pump system.
The core part of central air conditioning is the refrigeration unit. The refrigeration unit consists of four parts, compressor, condenser, throttle and evaporator. Compressor --- compresses low-pressure gas into high-pressure gas, condenser --- where high-temperature and high-temperature gases release heat and condense into liquid, throttle --- throttle high-temperature and high-pressure liquid into low-temperature and low-pressure liquid, evaporator -- -Low temperature and low pressure liquid absorbs heat and evaporates into gas. The refrigerant circulates through the above four major components in sequence. The high-temperature and high-pressure refrigerant gas coming out of the compressor flows through the condenser to reduce temperature and pressure. The condenser takes the heat to the cooling tower through the cooling water system and discharges it. The refrigerant continues to flow through the throttling device, becoming a low-temperature and low-pressure liquid, flowing through the evaporator, absorbing heat, and then being compressed. There are chilled water circulation systems connected at both ends of the evaporator. The heat absorbed by the refrigerant reduces the temperature of the chilled water, causing the low-temperature water to flow to the user end, and then passes through the fan coil for heat exchange and blows out the cold air.
I checked the pressure and temperature in this part and found no problems.
Water-cooled central air conditioning includes cooling towers, chilled water pumps, cooling water pumps, units, pipelines, fresh air systems and other parts.
A cooling tower is a device that uses water as a circulating coolant to absorb heat from indoors and discharge it into the atmosphere to lower the water temperature. The hot and cold exchange between water and air is used to generate steam. The steam volatilizes and takes away the heat to achieve evaporative heat dissipation. It dissipates the waste heat generated in industry or refrigeration and air conditioning to lower the water temperature to ensure the normal operation of the system. The device is generally barrel-shaped.
The chilled water circulation system is that the chilled water of the central air-conditioning equipment absorbs the cold energy of the refrigerant evaporation, lowers its temperature and becomes cold water. After entering the water distributor, it is sent to the surface cooler or cooling coil of the air-conditioning equipment to heat it with the air being processed. After exchange, it is returned to the chiller for recycling and reprocessing.
The function of the cooling water pump is to transfer heat to the cooling tower and then dissipate it.
The ground source heat pump air conditioning system consists of a ground source heat pump unit, a cooling water pump, a chilled water pump and a ventilation pipe. The working principle is to absorb the low-temperature energy from the ground through the ground source heat pump system and bring it to the rooms of each building in the summer. In winter, high temperatures are absorbed from the ground and brought to the rooms of various buildings.
There are also some companies that use wind systems. The equipment of the wind system does not occupy the computer room and is placed on the roof or in a well-ventilated place. The fresh air transmission method adopts the displacement type. Fresh outdoor air will be automatically sucked into the room through negative pressure. When it enters the room through the fresh air outlet installed on the window of the bedroom, living room or living room, it will automatically remove dust and filter. At the same time, the corresponding indoor pipelines are connected to the exhaust vents in several functional rooms. The circulation system formed will take away the indoor waste gas and concentrate it on the exhaust vent to "exhale", and the exhausted waste gas will no longer be recycled. Good circulation of old and new wind shapes.
Deng Fei and Shi Rui followed the cooling water pump and the chilled water pump to conduct inspections. An ultrasonic detector was used to detect slowing down of flow in some places. Ultrasonic waves are emitted to the particles and bounce back, and the speed is determined based on the frequency relationship of the back and forth ultrasonic waves. However, the heat transfer rate remains unchanged and the water flow velocity does not seem to change.
