The present disclosure provides a cup lid and a self-producing water cup. The cup lid includes: a housing, a condensing mechanism, and a heat dissipation mechanism. The housing defines a housing space, an air inlet, an air outlet, and a water outlet. The air inlet, the air outlet, and the water outlet are connected to an outside. The air inlet, the air outlet, and the water outlet are connected to the housing space. The condensing mechanism is housed in the housing and connected to the air inlet. The condensing mechanism is configured to condense air flowing from the air inlet into water, and the water flows out through the water outlet. The heat dissipation mechanism is housed in the housing and connected to the air outlet. The heat dissipation mechanism is configured to dissipate heat generated by the condensing mechanism.

The present disclosure provides a cup lid and a self-producing water cup. The cup lid includes: a housing, a condensing mechanism, and a heat dissipation mechanism. The housing defines a housing space, an air inlet, an air outlet, and a water outlet. The air inlet, the air outlet, and the water outlet are connected to an outside. The air inlet, the air outlet, and the water outlet are connected to the housing space. The condensing mechanism is housed in the housing and connected to the air inlet. The condensing mechanism is configured to condense air flowing from the air inlet into water, and the water flows out through the water outlet. The heat dissipation mechanism is housed in the housing and connected to the air outlet. The heat dissipation mechanism is configured to dissipate heat generated by the condensing mechanism.

There is provided a method for determining an optimal condition for artificial recharge by using a computer in an artificial recharge system provided with an injection well for injecting fresh water into an aquifer, the method including: a step of calculating a maximum permissible quantity of injection of fresh water to be injected into the aquifer; a step of determining a height of a screen which is an area on a side surface of the injection well where penetrating holes are formed, based on the calculated maximum permissible quantity of injection; and a step of determining an injection pressure of the fresh water to be injected into the aquifer, based on the height of the screen.

There is provided a method for determining an optimal condition for artificial recharge by using a computer in an artificial recharge system provided with an injection well for injecting fresh water into an aquifer, the method including: a step of calculating a maximum permissible quantity of injection of fresh water to be injected into the aquifer; a step of determining a height of a screen which is an area on a side surface of the injection well where penetrating holes are formed, based on the calculated maximum permissible quantity of injection; and a step of determining an injection pressure of the fresh water to be injected into the aquifer, based on the height of the screen.