Cold chain for 20 years

Chapter 39
Just after the new year, Luan Pingxin called.

Traveling to the city and down to the counties, the Luan family has many relatives, and Luan Pingxin has not come back for several years. In her words, it may not be possible to run from the first day of the Lunar New Year to the fifteenth day of the first lunar month.

Therefore, the two of Lei Xiaoxi's confessions could only be completed years ago.During the period of years ago, the Luan family had a large number of guests every day, some came to give gifts, and some talked about the business development in the next year.

After discussing, Luan Pingxin decided to come to the clean Hu family.

"Boss, come and help Mom move these pickle jars to the yard."

"Mom, it's going to be freezing in the yard."

"It's not too late, Pingxin will move in after leaving at night."

"Don't bother."

"The pickle jars are full of smells in the room, listen to the mother, hurry up!"

If I had known about Hu Shutong, I wouldn't have said in advance that Luan Pingxin was coming. This was great. My father swept the yard more meticulously than the floor, and arranged for Yuntong to wipe the whole house without any dead ends.The New Year's goods were put aside first, and I hurriedly prepared some chicken, fish and cold dishes for Luan Pingxin, a big guest.

After lunch, Luan Pingxin came to Hu's house and brought a box of nutritional products to Hu's mother as a gift.

Hu Yuntong came over with a smile, and said hello shyly, "Sister Pingxin."

Luan Pingxin was surprised when he saw it, "Yuntong is almost as tall as your brother!"

Father is more restrained, but mother is not. She always glances at Luan Pingxin, which seems to be vague to herself, but it is very obvious to others.

Hu's family is filled with a more joyful atmosphere than New Year's Eve.

After making tea and pouring water, Luan Pingxin came to Hu Shutong's room after a brief sit down. The door was open, and the Hu family's TV was turned off, and he made every move lightly.

Luan Pingxin breathed a sigh of relief first, "Let me tell you that my house is full of people coming and going, sometimes my dad even has to set up four or five tables a day, and my brain hurts from drinking and arguing. Say hello, your house is still clean."

Hu Shutong smiled, "Your house usually has a lot of guests, let alone this time, I'm going to visit Uncle Luan in a few days."

"what are you going to do?"

"I heard from my dad that Uncle Luan has been taking care of the family a lot. I should go after the Chinese New Year."

Luan Pingxin didn't say much, "Okay, then shall we start work?"

Two copies of the same material, at this time, the two have made their own annotations. In the past few days, they have thoroughly understood these things, and in addition, they have also taken out the content they summarized in the process.

Prefabricated cold storage has great prospects. It is the best supplement to civil engineering warehouses. In many places where it is inconvenient or impossible to build civil engineering warehouses, such as restaurants, large corporate canteens, and large hotels for short-term storage needs, assembly warehouses are the best solution.It’s just that the assembly warehouse started much later than the civil engineering warehouse. Cold storage building materials manufacturers have the idea of ​​being an assembly warehouse integrator, and it has only emerged in recent years.

As soon as Hu Shutong and Luan Pingxin met at this time, they suddenly had the feeling of discussing together in high school, and the habit of talking first and then doing it followed.

"If you ask me, it is a miracle that Qiangrui's scheme can be used up to now. It is no wonder that such a high standard can achieve results. The assembly warehouse has been made into a high-end material combination warehouse. This is not a business, it is clearly a cold storage that burns money. model."

Hu Shutong nodded and said: "Heat insulation materials are also expensive. There is no mention of polystyrene sandwich panels in the whole article, and all polyurethane is used. The price difference per square meter reaches 100 yuan. In fact, polystyrene has strong water absorption. Insufficient, structural integrity, rigidity and strength of polystyrene are better than polyurethane, and a single block can be 12 meters long, look at this again.”

While talking, Hu Shutong took out a summary of his own materials, "This is a comparison of various indicators between extruded polystyrene foam boards and polyurethane, so my suggestion is that small assembly warehouses use polyurethane sandwich panels, while medium-sized ones use polyurethane sandwich panels. Assembled libraries, extruded polystyrene should be used on a large scale."

"Density, heat conduction, compressive resistance, and tensile strength all meet the requirements?" Luan Pingxin asked.

"absolutely okay."

Luan Pingxin nodded and said: "Their current cooling method is too complicated. Each computer room is equipped with a gas-liquid regulating station, and the equipment in each warehouse is connected through liquid supply and return pipes. And its working efficiency not only depends on the design level, but also It depends on the installation technology, it is difficult for unskilled technicians to do it well, and it requires a lot of labor costs. Instead of this, it is better to directly choose a refrigeration unit, and assemble the compressor, condenser, and expansion valve in the enterprise."

"What about the cooling effect?"

"It is definitely different from the previous ones, but I think this is the best solution at the moment. You think, the core of the assembly warehouse is compact and efficient, which is different from the mission of the civil engineering warehouse. The civil engineering warehouse can easily cost tens of thousands of tons. It is the role of distribution, and the assembly warehouse is to solve the immediate needs of small households. Too complicated cooling methods will lead to long cold storage construction periods, high construction costs, and insufficient installation levels will cause disputes, which are not conducive to promotion. "

Hu Shutong nodded and said yes, what Luan Pingxin said, perfection is good, but the more feasible practicality cannot be ignored.

Next, Hu Shutong made some additions to the reservoir structure, capacity determination and heat load calculation.

After discussing like this for two or three hours, suddenly the two of them looked at each other, because the original plan has been altered and changed to "unrecognizable".

"I have an idea, I don't know what you want."

"What's your opinion?" Luan Pingxin asked with great interest.

"This plan, we should pretend that we have never seen it before. You will work on the refrigeration section, and I will work on other sections, and together we will come up with our own feasible plan. Throughout the article, we will not compare with the original plan, but only talk about the measures we think are feasible. .”

"Agreed, we will not make any corrections, nor improve and optimize it on the basis of it, but make a copy of our own." At this point, Luan Pingxin sighed again, "In this way, our workload will be doubled. gone."

Luan Pingxin was right. If it was to improve the plan, they already had a lot to focus on, but if they came up with their own plan, it would become a systematic work.
"But you and I can't do it independently. There are many places related to energy consumption and cooling data. We have to do it together. And we have to do it well before the year, and we won't move the plan after the year. Let's go directly to Qingyan."

"That's what I mean too, I can only work hard for you to run a few more times."

Luan Pingxin looked around the room, "Your place is pretty good, it's a good place to calm down."

Immediately Luan Pingxin walked to Hu Shutong's desk and saw books and magazines related to the cold chain. Just when he was about to praise this person for his hard work, he suddenly saw a familiar red plastic in the crack. leather book.

"Hu Shutong, come here."

"what happened?"

"Who swore it had nothing to do with me back then, which made me believe it for so many years."

"Pingxin, what are you talking about?"

"I copied the lyrics book for two semesters, why are you here!"

"Mom, is dinner ready?"

……

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(End of this chapter)