Cylindrical ammonia tank with a capacity of 2000 tons, pressure of 0.0035 MP, bottom temperature of -33 degrees; what is the top temperature?
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For a cylindrical ammonia tank with a capacity of 2000 tons, operating at a pressure of 0.0035 MP and a bottom temperature of -33 degrees, what will be the temperature at the top outlet if only half of the capacity is filled? Is it -33 degrees? It flashes naturally. This post was last edited by snowdfr on 2009-3-31 19:12]
The temperature at the upper part will be slightly lower than that at the lower part. The reason is as follows: Liquid ammonia stored in large tanks may experience thermal stratification. That is, the liquid at the bottom of the storage tank is subjected to pressure from above, which raises its boiling point slightly above that of the liquid in the upper part; meanwhile, the liquid ammonia in the upper part remains at an extremely low temperature due to slight evaporation. After standing, the liquid forms two layers: \"hot\" at the bottom and \"cold\" at the top. However, this temperature difference is very small.
It’s probably around -34°C, based on the operating conditions of our company’s atmospheric-pressure ammonia tanks at present! ! Our company also uses 10,000-ton cylindrical ammonia tanks.