Die on Mars

With the oxygen check completed, the next thing to look at is fresh water.

Fresh water and oxygen are equally precious. If there is a lack of fresh water, Tang Yue will not survive for three days.

At Kunlun Station, oxygen and fresh water are produced cyclically, and the two are closely related and cooperate with each other.

The life support system produces oxygen by electrolyzing water, and then uses hydrogen and carbon dioxide to produce fresh water.

All wastewater in the station will be recycled, including water vapor, urine and feces. The toilet at Kunlun Station is a very powerful suction machine that can extract all absorbable water molecules.

Urine will be dried directly into urea and uric acid crystals, while feces will be dried to the same consistency as sand, and then vacuum-packed and brought back to Earth.

The old cat often told Tang Yue that the soup in your bowl was mixed with your soup ten minutes ago.

That’s all for my own Xiang.

Lao Mao even said that the soup in your bowl was mixed with Lao Zheng’s Xiang ten minutes ago.

Lao Zheng is one of the members of the expedition team. He is a greasy middle-aged man. One poop can pollute the air of the entire Kunlun Station, so when he goes to the toilet, everyone else will go out to take refuge.

I can't bear it anymore.

"On average, you consume 1.56 kilograms of drinking water per Martian day. Rehydration food contains about 1.20 kilograms of water. To produce oxygen, you need 0.92 kilograms of electrolyzed water."

Old cats plan carefully.

"In other words, you need to consume an average of 3.68 kilograms of fresh water a day. In addition, you need to take a bath once a week, which requires about 5 kilograms of fresh water."

"What about recycling?" Tang Yue asked.

"The recycled water mainly comes from urine, feces, breathing, sweat and other condensed water." The old cat replied, "You produce an average of 1.49 kilograms of urine a day..."

Tang Yue was stunned for a moment, "Do I have to pee that much?"

"You don't know how much urine you make?" the old cat said. "This is computer statistics. On average, you produce about 120 grams of feces every day."

Tang Yue was silent for a few seconds.

"You don't need to tell me how much shit I poop every day. Your words make me seem like a useless shit-making machine..."

"In addition, your daily breathing and sweating will produce about 1.6 kilograms of water vapor, and other metabolic activities produce a total of 0.34 kilograms of water." Lao Mao said, "The highest recovery rate of the water circulation system at Kunlun Station can reach 100%. Ninety-six, which means that Kunlun Station can produce 3.4 kilograms of clean fresh water every day."

"I consume 3.68 kilograms of water every day, but I can only regenerate 3.4 kilograms of water?" Tang Yue asked, "Is there a difference of 0.28 kilograms?"

The old cat nodded.

Tang Yue frowned.

Less than 300 grams of water is not enough to fill a 500 ml mineral water bottle.

If it was on earth, he wouldn't care at all. Now Tang Yue finally knew what fresh water was and life.

This difference of less than 300 grams will directly determine how long he has left to live.

Consuming 3.68 kilograms and replenishing 3.4 kilograms, making ends meet, the fresh water in Kunlun Station will continue to be lost at a rate of 280 grams per day, and the total fresh water reserve will gradually decrease.

When the fresh water in the station is completely exhausted, Tang Yue will be finished.

"How much water do we have in total?"

"1,200 liters." Old Cat replied, "That's 1,200 kilograms."

"Based on the loss rate of 300 grams per day, this much water can only be used..." Tang Yue calculated in his heart, "Four thousand days."

"This is only the most ideal situation. In fact, it will definitely take less than 4,000 Martian days. You are not the only one who needs to consume fresh water on Kunlun Station, and as the water circulation and purification system ages, the recycling efficiency will continue to decrease." Lao Mao reminded , "I think if this water can be used for three thousand Martian days, it will be a very ideal situation."

Three thousand days.

Eight Earth years.

Tang Yue squatted on the floor, with the maintenance manual of Kunlun Station spread out in front of him, and sighed.

"If I can really live for another eight years, it will be considered a blessing from God. I am very contented."

Even if the earth is gone, he can still live for another eight years. Isn't this earned? The Lord of Hell is very considerate.

"It's too early to tell that you can live for another eight years." The old cat rudely interrupted Tang Yue's dream, "Let's count the food next."

Food is the third material that needs to be counted. If there is not enough oxygen, Tang Yue will suffocate to death. If there is not enough fresh water, Tang Yue will die of dehydration. If there is not enough food, Tang Yue will starve to death.

All of them are killers.

Tang Yue laboriously moved out all the boxed food.

Food and oxygen water are different. These things are big, heavy and take up space. Most of them are leftover from the last round and this round.

For some reason, people on Mars don't have a good appetite, their taste buds are numb, and no matter how delicious the food is, it tastes like crap in their mouths.

So Tang Yue and the others forced themselves to eat, barely eating the prescribed amount.

There is still a lot of food left over from the last round of supplies, mostly ready-to-eat and semi-processed food.

You don’t have to eat toothpaste like the early astronauts did on the Kunlun Station. There are dinner plates, ovens and microwaves here. Since Mars has gravity, you don’t have to worry about tableware and food flying everywhere, so food processing on the Kunlun Station is even better than on the ISS. Much more convenient, the kitchen can almost emulate the design on Earth.

Theoretically speaking, Kunlun Station is fully equipped with tableware, and there are no technical problems in hosting a Manchu-Han banquet.

Just to save water and electricity, most of the food delivered is semi-finished products that have been preserved and frozen. If you want to eat it, you only need to simply cut and heat it.

What's more, fresh fruits and vegetables cannot be transported at all. It takes a year to get from the earth to Mars, so anything sent will be ruined.

Tang Yue opened the boxes one by one.

"Beef, vacuum packed, pickled with preservatives, has a shelf life of two years." Tang Yue took out a large piece of beef from the box and placed it on the shelf, "Twenty kilograms, combined with other things, it should be fine for two months. Bar?"

The old cat nodded.

"Chicken breasts are marinated with preservatives and have a shelf life of two years." Tang Yue took out a large bag of chicken breasts from the box, "Twenty kilograms can last for two months."

Large portions of ingredients such as large pieces of beef and chicken breasts are basically canned foods in soft packaging. These meats have been steamed and sterilized at high temperatures on earth, and contain a certain amount of moisture. Finally, they are packaged in soft packaging. Carry out vacuum packaging.

They're essentially cans, but because they're soft-packed, they're not as heavy as metal cans and don't take up a lot of space.

In theory, these meats can be eaten directly, but their original use is for cooking, such as being used as raw materials for frying steaks... The permanent population of Kunlun Station is six people, and all food is prepared for six people. Ten kilograms of beef can't actually be eaten for a week.

But now only Tang Yue is left, and he can only eat for two months if he tightens his belt.

Tang Yue took out all the large portions of ingredients from the boxes and piled them on the shelves and on the floor.

"How long will this food last you?" the old cat asked.

Tang Yue made some estimates and said, "If you don't consider the quality of life, you will definitely not starve to death within a year, right?"