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

On Mars, 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. The two are closely related and cooperate with each other. The life support system generates oxygen through electrolysis of 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. The urine will be directly dried into urea and uric acid crystals.

The feces will be dried like 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 cock ten minutes ago.

That’s all for my own flying.

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 shelter.

I can't bear it anymore.

"On average, you consume 1.56 kilograms of drinking water per Martian day. The water content in rehydrated food is about 1.20 kilograms. To produce oxygen, you need 0.92 kilograms of electrolyzed water." Old Mao calculated carefully, "In other words, you need to consume 3.68 kilograms a day on average.

fresh water. 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, breath, 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 will 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 can't fill a 500 ml mineral water bottle. If it were on earth, he wouldn't care at all. Now Tang Yue finally knows what fresh water is, which is life.

The difference of 300 grams will directly determine how long he has left to live.

Consuming 3.68 kilograms and replenishing 3.4 kilograms, unable to make 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 just 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 though the earth is gone, he can still live for another eight years. Isn't this a profit? The Lord of Hell is very considerate of him.

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

Food is the third material that needs to be counted. If there is insufficient oxygen, Tang Yue will suffocate to death. If there is insufficient fresh water, Tang Yue will die of dehydration. If there is insufficient food, Tang Yue will starve to death.

Both are killers.

Tang Yue laboriously moved out all the boxed food. The food and oxygen water were different. These things were big, heavy and took up space. Most of the food was uneaten from the previous round and this round.

What is left behind.

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 force themselves to eat, barely eating the rated amount.

There is still a lot of food left over from the last round of supplies, most of which are ready-to-eat and semi-processed foods. You don’t have to eat toothpaste like the early astronauts did at Kunlun Station. There are plates, ovens and microwaves. Because of Mars,

With gravity, you don’t have to worry about tableware and food flying around, so it’s much more convenient to process food on Kunlun Station than on the ISS, and the kitchen can almost imitate 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. It is just to save water and electricity, so most of the food delivered is semi-finished products that have been preserved and frozen. If you want to eat, you only need to

Simple to cut and heat.

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 there would 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.

When vacuum sealed, they are essentially cans, but because they are soft packages, they are not as heavy as metal cans and do not 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 Tang Yue is the only one left, and he can only eat it 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 the floor.

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