Chapter 203 Self-sustain
Today's evening comes the latest.
The first, second and third floors of the office building in the northwest corner of the Yangcheng Warehousing Center were cleared.
Li Haitao, the person in charge of the storage center, was discussing something with a middle-aged man in work clothes.
"Captain Yang, we have modified the inside according to the drawings, including sealed doors and disinfection channels."
"That's good." Yang Lingyu checked the time on his phone and frowned slightly.
"Captain Yang, I don't know how many days the installation will take, so I can arrange the logistics."
"Installation and debugging will take about three or four days." Yang Lingyu checked the time on his phone again, and then glanced at the horizon where the sun was about to set.
Perhaps seeing Yang Lingyu's anxiety, Li Haitao said with a smile: "Captain Yang, don't worry. It is relatively slow for trucks to enter Yangcheng during this time, even in the outer suburbs. There are too many people returning home from get off work."
< br>
The two continued chatting for half an hour.
Finally, I saw several large trucks entering the unloading area from the dedicated truck channel.
The forklift driver carefully unloaded the battery boxes one by one from the large truck.
There are 150 battery boxes in total, a small collection of equipment squeezed out of Fair Town's biopower station.
Seeing that everything was coming, Yang Lingyu quickly led the engineers and technicians from the power engineering team and began to use a crane to move the battery boxes one by one to the second floor.
The second floor, which covers an area of 400 square meters, has been renovated in advance. As each battery box is installed, power engineers and technicians quickly connect the lines.
The next step is to install various supporting equipment, including power distribution cabinets, transformer boxes, control equipment, lead-carbon batteries, monitoring centers, etc. on the third floor.
Finally, there are the backup diesel power generation room, waste extraction system, liquid slag separation system, liquid return system, slag disinfection system on the first floor, and the temporary slag storage room next to the office building.
After installing these things, it was already the third day after the winter solstice.
Yang Lingyu and others, wearing protective clothing, took Lao Fang, an electrician from the storage center, into the microbial fuel cell room on the second floor.
"Lao Fang, you have read the technical manual. From now on, this place will be under your management. You must strictly follow the technical manual. If you encounter something you don't understand or an unexpected situation occurs, don't mess around alone. Directly Call the power office ”
Old Fangtou said in a hurry: "I know."
Yang Lingyu immediately ordered: "Now you operate according to the technical manual, and I will guide you next to you."
"Huh..." Lao Fang took a deep breath.
First, I checked the indoor oxygen concentration and carbon dioxide concentration. They were all the same as the normal atmospheric concentration.
Then he came to the battery box that needed to be operated and pulled down the power transmission knife to prevent the battery box from being connected to the circuit during operation.
He pulled out the water pipe of the water circulation system and injected 0.85 cubic meters of water into the battery box. When he saw that the water level reached the water level mark in the battery box, he quickly stopped filling the water. The water was all tap water that had been disinfected in advance.
Lao Fang, who was somewhat in a hurry, put down the water injection pipe and stopped to recall the next step of the operation.
From the storage room on the second floor, take out five barrels of nutrient powder, each barrel is a standard 20 kilograms. These powders are composed of dried cow dung, straw, soybean genistein, bacteria and some trace amounts of auxiliary fermentation. The elemental composition is equivalent to prefabricated nutrients that can be added directly to the battery box.
As the five barrels of powder were poured into the battery box, Lao Fang picked up the mixing fiberglass rod and stirred quickly for a while. The water and powder in the battery box quickly merged and turned into a thick "curry sauce" state.
Due to the drying and grinding process, these cow dung solutions do not smell bad.
In fact, it doesn't matter if there is a smell, because the ventilation system of this room has deodorizing and filtering equipment, which can effectively reduce the smell.
What's more, cow dung doesn't smell very bad, at least it's much better than pig dung.
"Very good, Lao Fang, you will have to follow this process in the future."
Lao Fang was sweating profusely: "Captain Yang, can I not wear this protective suit and helmet?"
"No, there is Gram bacteria in these battery fluids, and there may be a risk of infection. Unprotected operations are absolutely not allowed, and you must be disinfected every time you come in and out."
"It's so troublesome..." Lao Fang was a little helpless.
"Don't make fun of your health. If you are discovered by the security officer, you should know the consequences?" Yang Lingyu threatened with a serious face and an extremely low voice.
"Uh...I know." Old Fang smiled and nodded.
It took more than three hours for everyone to work together to inject microbial battery fluid into all 150 battery boxes.
There are 150 battery boxes distributed in 5 rooms, with 30 battery boxes in each room. In order to facilitate control, the temperature and light intensity are used to adjust the power generation.
The control system has been programmed in advance to determine how much power needs to be generated. The system will automatically use the illumination and indoor temperature to allow the power-generating bacteria to enter the high-efficiency period, the medium-efficiency period, the low-efficiency period, the rest period, and the outbreak period.
The initial concentration of organic matter in the battery fluid of 150 battery boxes is different. This is to facilitate the cycle. It takes an average of two and a half days to replace the battery fluid in one or two battery boxes. The entire power supply system must be maintained at all times, with at least 140 batteries. The box can supply power normally.
If this power generation room is operated at full load every year, it can generate 320,000 kilowatt-hours of electricity, with a maximum daily power generation of 876 kilowatt-hours. It is also very adjustable and can smoothly switch from 0 kilowatt hours to 36.5 kilowatts.
The power generation power of this power generation room is also specially designed for the Yangcheng Warehouse Center, which can maintain the entire load of the warehouse center, warehouse supermarket, office building, employee dormitory, and parking lot charging pile.
As for the battery liquid powder, it is naturally produced by the headquarters and then uniformly distributed. The Yangcheng Warehouse Center only consumes about 40 kilograms of battery liquid powder every day, which can maintain this 60-acre storage center and take away a A self-built house with 50 rooms.
Yang Lingyu and his team stayed here for another two days until the entire system generated electricity normally.
The Yangcheng Warehousing Center also uses its own electricity, which saves the entire warehouse center at least 300,000 kilowatt-hours of electricity outsourcing costs every year.
Although the initial construction of this system requires a cost of 480,000 to 550,000, it only takes about two years to almost earn it back. The service life of this system is designed to be 30 years, and amortized equally to each year, that is The annual equipment depreciation cost of 16,000 to 18,300 yuan, plus maintenance, powder, water, and replacement of some parts, the average annual comprehensive operating cost is about 30,000 yuan.
That is, the cost of one kilowatt hour of electricity is 0.1 yuan.
As for the electrician Lao Fang’s labor costs, he actually cannot fully count the manpower in the power generation room, because before the power generation room was built, the storage center needed a permanent electrician. Now it is just a matter of making full use of the labor force.
If the microbial fuel cell were not too large and required various supporting facilities, its application range would definitely extend beyond fixed power stations.
However, the company has planned to purchase a large number of electric vans and electric pickup trucks for use in the warehouse center to deliver goods to specialty stores and customers.
Warehousing centers, factories, breeding farms, and farms, these industries with spare space, will successively plan to build power stations and power generation rooms, striving to achieve self-sufficiency in electricity, and even obtain part of the revenue through charging piles.
Just after the power generation room of the Yangcheng Warehousing Center was put into use.
The local power supply bureau in Yangcheng also sent a team of electrical engineering personnel over. They came mainly to remove the electricity meter, but also to check the power situation of the storage center.
After meeting Li Haitao, the engineer in charge of leading the team, Du Guobiao, asked curiously: "Manager Li, are you sure you want to remove the meter? Now that it has been removed, it will be troublesome to apply again in the future. It is better to keep it as a backup."
< br>
However, Li Haitao shook his head: "Our internal power supply system is already running smoothly. We also have backup diesel generators and large power storage rooms. There will basically be no power problems."
This is also one of the unique advantages of the improved microbial fuel cell. Although the power generation is not large, the power generation is highly controllable and the power generation conditions do not pose high risks.
The power generation is highly controllable and the power generation conditions do not involve high risks, which are crucial bonus points for small power generation rooms that build independent networks.
For example, wind power, photovoltaics, tidal power generation, etc., look at any processing plant or residential area that dares to independently use these power generation equipment to build an internal power grid. The instability in the power generation process can paralyze the entire power grid if not careful.
This is also the reason why power grid systems such as Guodian and China Southern Power have a love-hate relationship with wind power and photovoltaics. The fluctuations generated during the power generation process can be called the killer of the power grid.
The microbial fuel cell technology improved by Jiang Miao does not have the huge fluctuations of photovoltaic and wind power, and the low-cost and controllable characteristics of the power generation process also allow it to surpass thermal power stations.
After all, during the operation of the gas turbine in a thermal power station, the range of low-cost adjustable power is relatively narrow.
For a gas turbine with a generating power of 50 MW, during operation, the greater the reduction in generating power means the higher the operating cost of each kilowatt-hour of power generation. If a gas turbine shuts down, restarting it again would be costly.
Once a lot of equipment is running, it cannot be stopped casually, otherwise it will increase a lot of costs.
The new microbial fuel cell technology is different. Its power generation controlled by temperature and illumination is much easier to adjust than that of a gas turbine.
For example, if you want to stop a microbial fuel cell box from running, you only need to lower the indoor temperature to 16 degrees Celsius and turn off the artificial light source, so that the power-generating bacteria in it can quickly enter a semi-dormant state and no longer produce current.
Microbial fuel cells with mild conditions are not as dangerous as thermal power plants and nuclear power plants. Even if an earthquake occurs, specially equipped disinfectant is stored on the ceiling of the battery room. If the power generation room collapses due to an earthquake, what is the pertinence of it? Disinfectant can quickly kill power-generating bacteria and Gram bacteria in battery fluid.
In fact, these two bacteria cannot spread on a large scale in the natural environment. Outdoor ultraviolet rays, temperature, and microorganisms can easily suppress their spread.
Especially the power-generating bacteria, which were carefully selected by Jiang Miao, have many restrictions on large-scale reproduction. Even if they are leaked, there is no way to achieve the conditions for their reproduction.
These conditions are easy to achieve in an artificial environment, but in a natural environment, it is basically impossible to get them together.
…
Faced with Li Haitao's insistence, Du Guobiao, the captain of the power supply engineer, could only do as he was told: "Aqiang, Dongzi, you go check the circuit and then remove the meter."
Please...you...Collect_6Ⅰ9ⅠBookⅠ(Six\\\Nine\\\Book\\\!)
Several power engineers quickly got busy.
After removing the electricity meter in the storage center, he went to the self-built house next door and removed the set of residential electricity meters as well.
As they were taking it apart, one of the electrical engineers said strangely: "Brother Du, something is wrong! Where does their electricity come from?"
"..." Du Guobiao also frowned. He raised his head and looked around for a while, but found no photovoltaic panels.
As for wind turbines, Du Guobiao didn't even think about it. Although this place was a suburb, there were many residential buildings and factories around it, so it was impossible to build a wind power project.
After removing the electric meter, Du Guobiao led people to the office building of the storage center again.
Hearing Du Guobiao's question, Li Haitao explained with a smile: "This is our company's new technology, a microbial fuel cell. The battery rooms are on the first to third floors below."
"Microbial fuel cell?" Du Guobiao was confused. This was the first time he had heard of this technology.
On the other hand, there was a relatively young electric power engineer on the side. Since he had a major in electric power, he had heard of microbial fuel cell technology: "Brother Du, to put it simply, this technology generates electricity through various activities of microorganisms, but the efficiency is very low. , is still in the laboratory stage.”
Du Guobiao asked: "Manager Li, can it be convenient for us to visit?"
After thinking for a while, Li Haitao nodded: "Yes, but you can only stay outside the power generation room to avoid bacterial contamination."
"We are just curious, we can take a look outside."
Went down to the third floor.
Electrician Lao Fang is in the control room.
Hearing the knock on the door, he stood up and opened the door: "Manager Li? What's the matter? Is there something wrong with the electric meter?"
Li Haitao shook his head: "No, these engineers from the Power Supply Bureau want to visit the power generation room. Please introduce them."
"Visit? No problem." Lao Fang looked at Du Guobiao and others: "What do you want to see?"
"How much power does this power generation room have?"
"Maximum power 36.5 kilowatts."
Du Guobiao and others looked at the equipment and related data in the control room and found that these were indeed equipment related to power control, and there were no problems with the data.
This surprised them greatly.
In the power generation room on the second floor, you can observe the situation through the surveillance camera.
"Is the power generation room on the second floor?"
"Well, it's on the second floor."
"This area is not big..."
Li Haitao said with a smile: "About 400 square meters, but the five power generation rooms are 300 square meters. The remaining area is areas such as passages, stairwells, disinfection passages and cloakrooms."
As for the area, Du Guobiao had a good look at it at a glance. He was even more curious about another question: "How stable is your power generation system?"
"It's very stable, and the power can be adjusted at any time, from 0 to 36.5 kilowatts. However, each power adjustment requires a buffer time of about half an hour. We use lead-carbon batteries for temporary scheduling."
"Is it difficult to regulate conditions?"
"It's not difficult, it can be controlled using air conditioners and LED lights."
Du Guobiao's eyes were full of surprise.
The electrical engineer who knew something about microbial fuel cells touched his nose: "If power control is true, then this technology is very useful."
"I wonder how much it costs?"
Li Haitao explained it carefully: "For our internal use, not counting R&D expenses, the equipment, consumables and maintenance add up to about 10 cents per kilowatt-hour. In terms of labor costs, it depends on the situation. Anyway, the larger the scale, the higher the labor costs." The lower it is, the labor cost of our power generation room is almost 0.375 yuan per kilowatt hour.”
Similar to a power station next to a dairy farm, the labor cost is 0.02∽0.05 yuan per kilowatt hour.
In fact, the maximum management scale of this small power generation room by a single electrician is 1,000 battery boxes, that is, 3 to 4 battery boxes need to be replaced with battery fluid every day.
If it is a large-scale microbial fuel cell power station, plus various auxiliary equipment, one person can manage tens of thousands of battery boxes.
This is the scale effect.
Du Guobiao feels that the labor cost of this power generation room is too high: "This labor cost is a bit high! After calculation, your cost of one kilowatt hour of electricity has come to 0.47 yuan."
"It can't be calculated like this. We just allocate the electrician's labor cost into the power generation cost. Our storage center is already equipped with an electrician, and this is not the limit of our power generation room. As long as the scale is doubled, the manpower The cost will drop by 50%," Li Haitao continued:
"Our company has conducted tests at the experimental base at the headquarters. Without auxiliary equipment, the maximum management scale of an employee is 1,000 battery boxes. With the help of auxiliary equipment, the maximum management scale can reach tens of thousands of battery boxes. The labor cost is about 0.02∽0.05 yuan per kilowatt hour. ”
"Is there an effect of scale?" another power engineer mused.
Li Haitao smiled and nodded: "Yes, it's the scale effect. Once we finish renovating the office building next door, this seven-story building will be used as a power generation room. By then, almost 750 battery boxes can be installed."
"You can't use up all the power?" Du Guobiao thought of this question.
"We plan to open a charging station nearby, and we can make some money by then. Of course, the scale will definitely expand a little bit, and it will reach the level of 750 battery boxes in a short time."
"I see, if it is used as a matching set of charging stations, it would be really good."
"Indeed, if this thing can really control the power generation so safely and conveniently, I think it can be considered for use as a power dispatching system."
Several power engineers were discussing it.
In fact, during their discussion, Nanjing Electric Power Company has sent people to Shanmei to inspect the microbial fuel cell technology of Hailufeng Company.
(End of chapter)