Daily Question: Methanol Technology Exchange Edition 20180514
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Learn from the advanced practices of the *Brothers section; there are rewards for correct answers – every response earns a reward, allowing us to grow and mature through these Q&A sessions. Short answer: What is vapor entrapment? In the operation of a centrifugal pump, at a constant head, the pressure difference between the inlet and outlet of the pump is proportional to the density of the liquid. When gas is present inside the pump, the average density of the liquid decreases, resulting in a reduced pressure difference or a very low vacuum level at the pump’s inlet, which prevents the liquid from being drawn into the pump. This phenomenon is known as vapor lock.
In the operation of a centrifugal pump, at a constant head, the pressure difference between the inlet and outlet of the pump is proportional to the density of the liquid. When gas is present inside the pump, the average density of the liquid decreases, resulting in a reduced pressure difference or a very low vacuum level at the pump’s inlet, which prevents the liquid from being drawn into the pump. This phenomenon is known as vapor lock.
In the operation of a centrifugal pump, at a constant head, the pressure difference between the inlet and outlet of the pump is proportional to the density of the liquid. When gas is present inside the pump, the average density of the liquid decreases, resulting in a reduced pressure difference or a very low vacuum level at the pump’s inlet, which prevents the liquid from being drawn into the pump. This phenomenon is known as vapor lock.