U-tube refers to a heat exchange tube shaped like a U, which is an important part of a U Type heat exchanger. Advantages of U-shaped tube: The U-shaped tube heat exchanger has only one tube plate, both ends of the tube are fixed on the same tube plate, the tube can be stretched freely, no thermal stress, and the thermal compensation performance is good; the tube side adopts double tube side, The process is longer, the flow rate is higher, the heat transfer performance is better, and the pressure bearing capacity is strong. The tube bundle can be drawn out from the shell, which is convenient for maintenance and cleaning, and the structure is simple and the cost is cheap. The disadvantage of the U-shaped tube is that due to the limitation of the radius of curvature of the bend tube, the arrangement of the heat exchange tubes is less, the innermost tube spacing of the tube bundle is relatively large, the utilization rate of the Tube Sheet is low, and the shell-side fluid is easy to form a short circuit, which is harmful to the transmission. When the tubes are leaked and damaged, only the U-shaped tubes at the periphery of the tube bundle are easy to replace. If the inner heat exchange tube is damaged, it cannot be replaced, but can only be blocked. Moreover, one damaged U-shaped tube is equivalent to two damaged tubes, and the scrap rate is relatively high.
U-tube,U Shaped Tube,Bundle Tubes,U Tube Bundle Guangdong Jiema Energy Saving Technology Co.,Ltd , https://www.heatexchangerjm.com
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Unknown man got into someone's car late at night and slept in the night of sleep disorder diesel generator | diesel generator price / 2011-06-20
In the early hours of the morning, Mr. Qiang, who lives on the third floor of No. 18, Fuminfang, Baixia District, heard the sound of a van alarm parked downstairs in his sleep and thought that the vehicle was hit or scraped. So his wife and daughter went downstairs and found that the exterior of the vehicle had not been rubbed, but they accidentally discovered a noise in the car. They feared that someone had stolen the car. Then Mr. Qiangqiang went downstairs. Mr. Qiang stood outside the car and held the bricks to guard and report the problem. Pull out a sleepy man in the car.
According to the owner of the vehicle, at 4 o'clock yesterday morning, the family suddenly heard the van that stopped downstairs in alarm and barked. His wife and daughter then went downstairs and looked at it. Mr. Qiang’s careful daughter looked around the car and did not find anything wrong with him. However, when Mr. Qiang’s daughter and his wife were preparing to return home and go to bed, they heard a strange noise in the car. “Don't go! There are circumstances...†Mr. Qiang’s daughter reminded her mother that you opened the door to see if there was a cat or the like in the car, but her mother did not have a car key on her hands, and then she yelled down at him. When I heard the shouting from her daughter downstairs, Mr. Qiang rushed downstairs and pressed the remote control to lock the door. When he went downstairs, he picked up a red brick and slowly approached the van step by step. "At the time, when I opened it and saw a man lying inside, I was afraid of dying." Because of fears of someone stealing a car, Mr. Qiang quickly scared to close the door again and held bricks to hold the door and called the police behind the door.
After the 110 policemen of the Special Patrol Police in Baixia District arrived at the scene, Mr. Qiang opened the door again and found that the man in his 30s was still snoring. After the uninvited guests in the car were awakened by the 110 police, they were immediately taken on the police car. However, the man was always silent about why he got into the sleep of other people in the middle of the night. When the police questioned him that he was a thief, the man, who was still in his dream, quivered and asked where the police were. For this reason, some people suspect that men in the car may suffer from night-soul disease. At present, this man who broke into the car late at night has been taken by the police to the Chaotiangong police station for further investigation.
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