"Electricity schedule?" Several leaders of the provisional management committee looked at each other.

"yes!" Hong'er nodded affirmatively.

"How?" Everyone present had no idea about this, so they all looked at her.

Hong'er was slightly red by them, and she could only recall what the chief had said.

In the modern society of the 21st century, every large and medium-sized city, especially in the summer in the past few years, as the temperature continues to get higher and higher, the use of air conditioning and electric fans in every household continues to increase, and the electricity consumption is naturally not small, so the electricity load of each city has reached the highest peak of the year.

From 9 a.m. to 12 a.m. and 6 p.m. to 10 p.m., they are the two most powerful periods of the day. In order to cope with this situation, the Economic and Electricity Commission of each city at that time would compile the annual effective electricity consumption plan of each city, arrange enterprises to take turns in an orderly manner, and carry out off-peak power rationing and peak avoidance for some shopping malls, hotels and office buildings with large electricity consumption, so as to give priority to ensuring people's livelihood electricity.

And after the large-scale steel and cement enterprises are staggered and limited, if the electricity demand is still not met in this case, then it is necessary to implement the peak staggering plan for comprehensive commercial buildings, office buildings and shops, and then further may start the plan for office peak avoidance.

At the same time, during the high temperature in summer, when the power load of the power grid exceeds the power supply, the local power supply company must formulate a series of plans to reduce electricity demand in addition to the above peak staggering and power rationing schemes.

This includes under the guidance of the government, the time of some enterprises will be adjusted to off-peak hours, the annual overhaul of some large enterprise electrical equipment, and the overhaul of some large equipment will be adjusted to the summer high temperature period with the highest domestic electricity load.

So at that time, in the Jinshan Development Zone, the second unit where Huangshi worked, a factory specializing in the production of cameras and security equipment, often enjoyed this kind of staggered shutdown treatment, such as stopping work in the morning, starting work in the afternoon, stopping again in the evening, and resuming work in the early morning.

Because this is not only the policy arrangement of the city at that time, but also the reason why the factory makes full use of the time-of-use electricity price policy of peak and valley, the factory must standardize the management of electricity consumption for equipment with large electricity consumption, reduce electricity waste, and improve production capacity. Try to arrange the production of high-power equipment during the off-peak hours of telephone use, and reduce the arrangement of electricity consumption during peak hours.

For example, the peak period of industrial electricity consumption is: [morning] 8:00 - [noon] 12:00, [afternoon] 17:00 - [evening] 21:00 normal period: [noon] 12:00 - [afternoon] 17:00, [evening] 21:00 - [night] 24:00 valley period: [night] 24:00 - [morning] 8:00.

The billing method and electricity billing standard of their smart meters are: industrial electricity = (basic electricity fee + electricity fee) x force regulation electricity fee (proportional) peak electricity price per kilowatt-hour 1. about 65 yuan; The price of electricity in the normal period is 0. about 90 yuan; The price of electricity in the valley period is the cheapest0. About 35 yuan.

Therefore, in the case of the government with a stick in one hand and a carrot in the other, the factory naturally complied with the unified arrangement of the Economic and Electric Power Commission. In fact, Dongluo Island is the same as the power company back then, although there is a 100KW diesel generator that generates electricity all the time, but there is also the problem of overload.

……

Because in order to freeze, store, process, and process the seafood caught from the offshore sea, and at that time, Huangshi also considered that the next stage was going to Canada, and it was impossible to go back and forth between Hyundai and Dongluo Island for three days as before, and deliver the processed seafood to Boss Ning's company in time, so he had to build a cold storage to process these seafood products before leaving.

Therefore, after getting the diesel generator, Huangshi is ready to go to the market to purchase cold storage. According to his understanding, at present, the cold storage structure in the domestic market is mainly civil engineering and assembly.

Among them, the construction method of civil cold storage is complex, the amount of work is very large, the waste of raw materials, the cost is also high, and the structure of the building is also destroyed. Moreover, the thermal insulation performance in the cold storage is poor, and the later operation cost is high; The surrounding area of the library is uneven, not beautiful, the size of the library body and the library door are limited by the original building, can not be disassembled and reused.

And the assembly of movable cold storage, do not destroy the original building structure during installation, the size of the library body and the design of the library door is very flexible, the installation and construction is also very convenient, fast, assembly and reassembly is also very convenient, more attractive is that the installation cycle is only 1/20 of the civil cold storage.

At the same time, the movable prefabricated cold storage is not easy to be damaged, the service life is longer, the maintenance cost is also low, the thermal insulation performance is good, the cooling speed is fast, and the thermal insulation time after shutdown is long. The later operating cost is low, and it is 30% to 40% more energy-saving than civil cold storage. Moreover, the body of the library is beautiful and smooth, the surface of the library is smooth, clean, hygienic and safe, and has the advantages of light weight, high strength, corrosion resistance, anti-aging, mothproof, mildew-proof and non-toxic.

Therefore, as soon as those refrigeration equipment companies heard that Huangshi wanted to purchase cold storage, they recommended to him this kind of cold storage that can be combined and assembled, the reason is that in the field of food production, processing, storage, transportation and marketing in the world, it is more and more widely used, and the scale of construction is getting larger and larger, which has been the general trend of the development of the refrigeration industry in the world.

……

Because this type of cold storage can be combined and assembled, it is both standardized, modular and factory from the architectural concept, and in addition to animal husbandry, aquatic products and fisheries, it can also be used in meat processing, food, fruit and vegetable processing and quick-frozen food, so Huangshi bought a small cold storage of about 300 square meters at once.

Among them, 100 square meters are used as high-temperature cold storage, and they are plus or minus 5 °C, which is suitable for fruit and vegetable preservation; The other 100 square meters are used as freezing cold storage, which is generally below -23 °C, which is suitable for rapid freezing before fresh refrigeration; There is also a low-temperature cold storage, with a temperature between -20 °C and -10 °C, which is suitable for refrigeration of aquatic products and poultry meat after freezing.

It was very simple to install this kind of combined cold storage, and that day Huangshi watched the workers of the refrigeration equipment factory, pulled several truckloads of materials into the shipyard, put the materials down in the designated place in Huangshi, and then began construction.

Combined cold storage from the appearance, in fact, and the color steel structure of the prefabricated house is somewhat similar, but most of them are single-layer form, the main structure of this kind of cold storage, Huangshi took a look, including columns, beams and the roof part are all made of light steel structure.

The wall of its envelope structure is made of prefabricated composite insulation panels, and the insulation materials are made of two kinds, one is rigid polyurethane foam, and the other is rigid polystyrene foam that everyone usually comes into contact with.

Because the strength and thermal insulation of polyurethane sandwich panels are better than those of polystyrene sandwich panels, polyurethane sandwich panels are used in low-temperature warehouses and frozen warehouses with low storage temperatures, while polystyrene sandwich panels are applied to high-temperature cold storage for fruit and vegetable preservation due to their good thermal insulation performance and moderate price.

Huang Shi thought that after the workers had assembled the combined cold storage, he would move them to Dongluo Island, so he would follow up the construction of the whole process. He saw that the outer envelope structure and floor are all made of long-span light portal steel structure, which are designed and manufactured in accordance with national standards, and all of them are prefabricated in their factory, and all the metal components on the site are connected by high-strength bolts and ordinary bolts, so the installation is relatively simple and convenient, and the peripheral frame is set up in less than half a day.

The only difficulty was to install self-waterproof profiled steel plates on the roof of the cold storage, as well as compressors and air condensers in the cold storage, as well as ventilation windows and roof ventilators at the ridges.

There are many models of cold storage compressors, and the more widely used ones are piston reciprocating, screw and centrifugal types. Generally, the compressor model is reasonably arranged according to the capacity, and the piston reciprocating compressor occupies an absolute advantage in the small capacity range, and the screw and centrifugal compressors occupy the main position in the large capacity range.

However, under normal circumstances, small cold storage will use fully enclosed compressors, medium-sized cold storage will generally use semi-enclosed compressors, and large cold storage will use semi-enclosed compressors. When choosing, you can also consider choosing an ammonia refrigeration compressor, because the power of the ammonia refrigeration compressor is relatively large, and it can be used for multiple purposes, but the installation and management are more cumbersome, so Huangshi chose a piston reciprocating fully enclosed compressor.

Because there are high-temperature cold storage, low temperature and quick-frozen storage in the cold storage of Huangshi, the fan is selected as the evaporator in the high-temperature storage, which is characterized by fast cooling speed, but it is easy to cause moisture loss of cold goods. The freezing storage and low-temperature cold storage are mainly made of seamless steel pipes, which are characterized by good constant temperature effect and cold storage at the same time.

It's just that when choosing which fan to use as the evaporator, the engineer and Huang Shi said that it is not a simple matter, because it first calculates the cooling capacity required by the cold storage, and also selects the size of the compressor according to the cooling capacity, and then according to the cooling capacity*1. 3. In order to select the size and model of the air cooler.

The air condenser is also one of the key refrigeration equipment for storage, which has three types: air cooling, water cooling and air and water combined cooling. Air cooling is suitable for small cold storage applications, while water-cooled condensers can be used in a wide range of refrigeration systems. Therefore, under the recommendation of the engineer of the refrigeration equipment factory, Huangshi also chose the air condenser from the good stream.

However, although the cold storage is good, but at the same time it is also a big eater of electricity, three-quarters of the power generated by diesel generators on the island enters its mouth, and other life, production of electricity only accounts for a quarter of less, but compared with later generations, people's livelihood has to give way to production, to the most rear, the "temporary management committee" also had to be like the later generations of the city's economic commission power department, issued a "on the adjustment of the island's residents electricity arrangement" notice.