[Mechanical Equipment Technology Edition] Daily Question 20171129: Refrigeration Equipment — Principle of the Siphon Tank
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This post was last edited by YORK Industrial Refrigeration on 2017-12-1 at 09:34. Starting from now, in order to enhance communication among users, a 【Daily Question】 activity has been launched on the Mechanical Equipment Technology forum. We hope everyone will participate actively to progress and improve together! ! ! Rewards: 3 wealth points for active participation, 10-15 wealth points for correct answers. This question is valid for two days; no scoring will be given after that period. The diagram below shows the siphon tank. Its working process was discussed the day before yesterday at https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1872218&extra= (the answer has been released). Today, I have a few questions: How does the siphon tank deliver the refrigerant liquid to the oil cooler? What helps the working gas inside the oil cooler return to the siphon tank? 1. Gravity 2. Evaporation. Density of gases and liquids: https://attach01.hcbbs.com/forum/201711/24/094501awc00m0y8rssc5ke.jpg https://attach01.hcbbs.com/forum/201711/24/094502zbycfffyt9fr9ydb.png ================================ High-quality promotions: Mechanical equipment——Maintenance procedures for York screw compressors: https://bbs.hcbbs.com/thread-1806833-1-1.html Mechanical equipment——Upgrading of York Quinton control centers: https://bbs.hcbbs.com/thread-1804837-1-1.html Mechanical equipment——Major repairs of GEA Grasox screw compressors: https://bbs.hcbbs.com/thread-1800467-1-1.html Mechanical equipment——Disassembly and maintenance of British HOWDEN screw compressors: https://bbs.hcbbs.com/thread-1832529-1-1.html Mechanical equipment——Disassembly and maintenance of Japanese Maekawa MYCOM screw compressors: https://bbs.hcbbs.com/forum.php?mod=viewthread&tid=1786445
The high-temperature, high-pressure ammonia vapor discharged by the compressor is condensed into a liquid in the evaporative condenser. It then enters the siphon tank, and when the liquid level in this tank reaches the overflow port, it flows into the ammonia storage tank from where it is supplied to the evaporator. The liquid below the overflow port of the siphon tank flows, driven by gravity, through the outlet of the siphon tank to the oil cooler of the screw compressor. There, it absorbs the heat from the lubricating oil and evaporates into a gas, which then returns to the siphon tank via the suction port. The liquid carried by this gas is separated within the siphon tube, while the dry gas enters the evaporative condenser, driven by the siphoning effect created by the compressor’s exhaust gas, where it is condensed. The condensed liquid then enters the next cycle.
The refrigerant liquid condensed in the condenser enters the oil cooler via the siphon tank; after absorbing heat from the oil, it turns into vapor. This vapor returns to the siphon tank, where it undergoes gas-liquid separation, and the gas then enters the condenser driven by the siphoning effect created by the compressor’s exhaust
The siphon tank uses gravity to send the refrigerant liquid to the oil cooler; the gas within the oil cooler then returns to the siphon tank via the compressor
In a refrigeration system, the main function of the siphon tank is to receive the high-temperature, high-pressure ammonia vapor discharged by the compressor; after being condensed in the evaporative condenser, this vapor turns into a liquid and enters the siphon tank first. When the level on the siphon tank reaches the overflow port, it enters the ammonia storage tank to supply liquid to the evaporator. The liquid below the overflow port of the siphon tank flows, driven by gravity, through the outlet of the siphon tank to the oil cooler of the screw compressor. There, it absorbs the heat from the lubricating oil and evaporates into a gas, which then returns to the siphon tank via the suction port. The liquid carried by this gas is separated within the siphon tube, while the dry gas enters the evaporative condenser, driven by the siphoning effect created by the compressor’s exhaust gas, where it is condensed. The condensed liquid then enters the next cycle.
The high-temperature, high-pressure ammonia vapor discharged by the compressor is condensed into a liquid in the evaporative condenser. It then enters the siphon tank, and when the liquid level in this tank reaches the overflow port, it flows into the ammonia storage tank from where it is supplied to the evaporator. The liquid below the overflow port of the siphon tank flows, driven by gravity, through the outlet of the siphon tank to the oil cooler of the screw compressor. There, it absorbs the heat from the lubricating oil and evaporates into a gas, which then returns to the siphon tank via the suction port. The liquid carried by this gas is separated within the siphon tube, while the dry gas enters the evaporative condenser, driven by the siphoning effect created by the compressor’s exhaust gas, where it is condensed. The condensed liquid then enters the next cycle.
The siphon circulation is primarily driven by the gravity of liquid ammonia itself and the difference in liquid levels
1. What does a siphon tank rely on to send the refrigerant liquid to the oil cooler? It relies on the gravity of the liquid in the siphon tank to send the refrigerant to the oil cooler. 2. What drives the working gas inside the oil cooler back to the siphon tank? The refrigerant exchanges heat with the lubricating oil outside the tubes, absorbing the heat from the hot oil; this process leads to boiling and vaporization. Eventually, the gaseous phase, carrying a small amount of liquid phase, returns to the siphon tank through the return port, where gas-liquid separation takes place.
In a refrigeration system, the main function of the siphon tank is to receive the high-temperature, high-pressure ammonia vapor discharged by the compressor; after being condensed in the evaporative condenser, this vapor turns into a liquid and enters the siphon tank first. When the level on the siphon tank reaches the overflow port, it enters the ammonia storage tank to supply liquid to the evaporator. The liquid below the overflow port of the siphon tank flows, driven by gravity, through the outlet of the siphon tank to the oil cooler of the screw compressor. There, it absorbs the heat from the lubricating oil and evaporates into a gas, which then returns to the siphon tank via the suction port. The liquid carried by this gas is separated within the siphon tube, while the dry gas enters the evaporative condenser, driven by the siphoning effect created by the compressor’s exhaust gas, where it is condensed. The condensed liquid then enters the next cycle.