Doomsday Bunker Upgrade Chapter 36: Solution

　　 If the city's tap water supply is still unblocked, Chen Xin can find a way to take a water pipe from his original home and add water to the water tank. When the shelter was built, he used the construction team to pick it up. Long hose for adding water.

　　 But now, on the one hand, the construction team has left, and Chen Xin does not have a long enough water pipe. On the other hand, Chen Xin is not sure whether the tap water is supplied.

In the month after the meteorite impact, the earth's surface was almost completely covered by fire and high temperature, and meteorites fell from time to time. Whether the water plant can survive such disasters is a question worth worrying about.

　　 What's more, even if the water plant can be preserved, the government is also maintaining the operation of the water plant in order to ensure the use of water for the refuge facilities. But how does Chen Xin fill the water tank of the refuge?

　　Water pipe? Chen Xin didn't have such a long water pipe, and only a pile of 1.5-liter mineral water bottles could be used.

　　Some people may say that it is not enough to use mineral water bottles, but a few more bottles!

That's right, but before you bottle water with mineral water, let's briefly explain the relationship between the volume and weight of water, that is, the density of water.

　　The density of pure water in the standard state should be 1, which means that one liter of water weighs one kilogram, and one ton of water has one cube.

　　Chen Xin’s water tank can hold three tons of water, which is three cubic meters. He has 30 1.5-liter mineral water bottles, which means that if they are all filled, they can transport 45 liters, a total of 90 kilograms of water, which is about one. Girlfriend's weight.

　　 How many round trips do you need to fill the water tank without considering Chen Xin’s physical fitness or time?

　　 This is not a difficult question. The first-year elementary school students who have learned addition, subtraction, multiplication and division can calculate this question.

A water tank with a total volume of three tons, converted into liters, is three thousand liters. Chen Xin can transport 45 liters at a time. After a simple division calculation and simple rounding, we can conclude that Chen Xin needs to go back and forth at least 67 times. Fill his water tank.

This is really not a number that can make people feel calm. Who can pick up his girlfriend and run back and forth 60 times at a time?

If it was ten or eight times, Chen Xin wouldn't even think about it, he just went out to find a faucet or a clean water source that was still usable, and the irrigation was done.

　　 But sixty-seven times, this is really a number that makes Chen Xin no desire to act.

　　 It may be possible to replenish in several times, but only if Chen Xin can find a stable water source.

So at this time, he should consider the second option, use the system to upgrade the water circulation system of the refuge, and see if he can find a solution.

　　The reason why this plan was not considered at the beginning was because the system could not be made out of nothing, and the existing things had to be upgraded.

　　Chen Xin’s shelter itself has no water source. Whether it is external tap water or a well built inside, it was not prepared when the shelter was built.

At the beginning, Chen Xin did consider building a well for the shelter, so that even if he used up the pure water reserves, he could still obtain new fresh water resources.

It's just that when the shelter was built, the construction team invited by Chen Xin did not have the equipment for drilling wells, and he did not contact the construction team that could drill wells.

The city where Chen Xin lives is located in the south of the Yan Kingdom, close to Daze, where groundwater resources are very rich. In the past, there were indeed many hand-operated pumps for groundwater extraction in rural areas.

　　 But during the previous construction, due to the schedule issue and the construction team was not contacted, Chen Xin had to give up this idea even though he wanted to build a well for his refuge.

Now that Chen Xin wants to upgrade the water supply system of the refuge, whether there is an upgrade plan that can mine groundwater, Chen Yu is not sure.

However, when he thought of the sixty-seven trips to find water outside, Chen Xin could only bet on whether there was something he needed in the system upgrade plan.

　　 Fortunately, the survival system that was picked up did not disappoint Chen Xin.

　　"Water supply system lacking water"

"Upgrade plan 1: Upgrade the material of the water supply system pipes, improve the efficiency of sewage recycling and regeneration, the volume of the water tank is +2 cubic meters, the regeneration water quality +1, and the required survival points for the upgrade are 500"

　　"Upgrading plan 2: Upgrade the water supply system pipe material, improve the efficiency of the water recycling system, increase the pump, the water tank volume +5 cubic meters, the upgrade requires 300 survival points"

　　"Note: The available head of the pump is 50 meters. The pump is only used for pumping water. Based on the refuge, there is no underground water layer within 50 meters of the ground and the groundwater cannot be obtained."

Chen Xin breathed a sigh of relief when he saw the appearance of a water pump in the upgrade plan. As for the remarks of the second upgrade plan, Chen Xin just glanced at it and didn't care.

This is the southern part of the Yan Kingdom and is known as the Jiangnan Water Town. This city is next to Yunmeng Daze, and the groundwater is rich beyond imagination. When Chen Xin built the shelter~IndoMTL.com~ But also deliberately consider waterproofing and avoid digging into groundwater.

　　 As for whether there is underground water 50 meters underground, this is something that Chen Xinsuo does not need to worry about, because the place where Chen Xin lived before had a well equipped with a hand-operated water pump, but it is now abandoned.

　　 Chen Xin didn't think much about it, and directly used the survival points accumulated in the past month to start the second upgrade.

　　The upgraded grid-like lights once again appeared in the shelter, only this time they covered the water supply system.

　　 And Chen Xin once again witnessed the power and magic of the system, because just now during the upgrade process, Chen Xin saw with his own eyes a pump made of grid-like light, condensed in front of his eyes forming.

　　 Seeing the water pump appeared, Chen Xin couldn’t bother to sigh the magic of the system. He checked the circuit of the pump, then went to the power distribution room to glance at the switch, then turned on the power of the pump and started the pump. work.

　　 This is a very small water pump, not very powerful, but it still makes a humming noise when it works.

　　 The noise made by the water pump is a bit noisy. Compared with the generator next to it, it looks like a noisy bear boy, but now Chen Xin is staring at the "bear boy" nervously, hoping to hear from the roar of the machine to the sound of water flowing.

　　 Although he knows that there is underground water underground, Chen Xin is still a little nervous. What if the water layer becomes a little deeper?

　　 But "Bear Boy" obviously didn’t let Chen Xin think about it for too long. Just when Chen Xin was thinking about what to do if he couldn’t get the water, there was a splash of water in the pump, and the pump was running soon. The sound of's became abruptly sinking, and the sound of water was also heard in the water tank embedded in the wall, which had become more than twice as loud on the side.

Water, pumped up.