Can the water in the tank be pumped into the spherical tank?

1. In the first case, the pressure in the original tank is 0.3 MPa; the water is pumped to a spherical tank at a height of 70 meters, where the pressure is 0.9 MPa. Due to the increase in pressure resulting from the pumping height as well as the high pressure within the spherical tank itself, ordinary pumps may not be able to meet such pressure requirements, and it is therefore very likely that the water cannot be pumped into the spherical tank. 2. For the second case, the pressure in the original tank is at atmospheric pressure, while the pressure in the spherical tank is 0.9 MPa. Similarly, to pump water to a height of 70 meters, a greater pressure difference must be overcome (from atmospheric pressure to 0.9 MPa). This situation is more difficult to achieve than the first one, and ordinary pumps are also likely to be unable to pump water into the spherical tank successfully. .

Whether it is Condition 1 or Condition 2, the final pressure inside the tank is already greater than the rated head of the pump. Therefore, when the pressure in the tank is 0.9 MPa, whether water can still be fed into it depends on whether the pump’s head at near-zero flow rate is greater than 0.9 MPa. If it is, a small amount of water can be fed in, but ultimately feeding will stop once the pressure in the tank equals the pressure at which the pump stops working