1. On-site analysis of the project

Dongguan Xinli International Agricultural Products Trade City is the largest wholesale market for agricultural and sideline products in Dongguan City. It is a "model of wholesale market upgrading and transformation" enterprise. Based on the reduction of electricity consumption, it cools down the freezer, prolongs the life of the warehouse building, and provides food storage. A good storage environment is analyzed as follows:

① Cold storage must consume electricity to produce cooling capacity, and electricity is the main part of the cost of cold storage. According to some data, the annual electricity consumption will account for 1/4-1/10 of the total cost, and the difference between the electricity consumption in winter and summer is about 100,000, which is due to the influence of solar thermal energy. The roof blocks the sun, reflects 92% of solar thermal energy, and reduces the cooling load of the refrigeration equipment, which not only saves electricity and reduces production costs, but also improves economic benefits. It is of great significance to improve economic management and improve the management level of refrigeration enterprises.

②The zinc-iron tile has been exposed to sunlight and rain all the year round, the air is humid, the salt content in the air is high, and the extremely corrosive chloride ions accelerate the rust and water leakage of the cold storage roof, which causes the zinc-iron tile to lose its use value and increase hundreds of thousands of dollars. The cost of replacing the tile. To reduce construction costs, it is necessary to protect the tile surface, play the role of anti-corrosion and renovation, and also achieve the effect of renovation and prolong the life of zinc-iron tiles.

③ The temperature inside the cold storage is lower than that outside the cold storage. To minimize the impact of changes in outdoor climatic conditions on the low temperature environment in the cold storage, the outer protective structure of the cold storage must improve the thermal insulation effect and performance, and delay the aging of the thermal insulation materials; the building structure of the cold storage "Cold bridges" should be avoided, the impact of outdoor (including hallway) temperature changes on the interior of the cold storage should be minimized, and the temperature difference between indoor and outdoor should be reduced.

④The roof structure of the cold storage is directly irradiated by the sun for a long time, and it will expand or shrink due to the influence of temperature changes. In order to reduce the effect of solar radiation, the surface of the exterior wall of the cold storage must be painted in a light color, and it is required to be as smooth and smooth as possible. Reflecting sunlight can solve this problem.

According to some of the above situations, combined with our many years of coating construction cases, we believe that making a "cold roof" sunscreen and heat insulation coating on the roof will solve the above problems. The emissivity coating reduces the absorption of solar heat, thereby achieving the purpose of reducing the cooling load of the refrigeration equipment and saving energy consumption. The use of "cold roof" energy saving can reduce the load of refrigeration equipment by about 10%-50%. "Cold roof" can also improve the stability of storage temperature, food quality, and ensure the integrity and tightness of the cold storage.

1. Can a "cold roof" reduce the cost of electricity consumption for the freezer?

2. Can it reduce the temperature difference between indoor and outdoor and prolong the life of the cold storage?

3. Can it improve the performance of good storage environment?

4. Can it be waterproof and rust-proof to save the cost of changing tiles?

5. How much water and electricity will be incurred each year in the later period?

6. How to maintain it later?

7. Can the cooling effect be guaranteed?

8. Will it affect the appearance of the building after construction?

9. Can the building be guaranteed to be in good condition?

10. Will it bring inconvenience to the owner during construction?

Hope you can find a satisfactory answer from the following solutions:

1. Product introduction

Heat reflective cooling coating is a new type of high-tech coating. It is produced with world-class technology and formula. It can completely reflect more than 92% of the radiant heat from the sun. The product has been tested by the National Chemical Building Materials Testing Center, and all indicators exceed National technical standards. So far, it is the only one of its kind tested by the center. Its successful development has created a new situation in the field of heat insulation and sun protection, which is of great significance.

Traditional sun protection and heat insulation building materials are made of materials with low thermal conductivity, which are costly, have poor heat insulation effect, are difficult to construct and waste resources. The new heat-reflecting cooling coating developed by us is completely different from the thermal insulation principle of traditional thermal insulation materials. It is not due to the small thermal conductivity of the material, but due to the particle structure in the material composition. The structure has the function of super reflecting solar radiation heat. Due to the powerful function of this particle structure, in a hot summer, one day's solar radiation cannot make the coating heat up at all, and its surface feels cool.

All traditional waterproof and leak-proof products are repaired by seams, but due to the influence of thermal expansion and contraction of the floor, the repaired cracks will soon crack, resulting in new leakage. The new type of heat reflection cooling has a constant temperature function, which can greatly reduce the temperature change of the building surface and fundamentally solve the chronic problem of building leakage. It is one of the most advanced anti-leakage products in the world today.

The sunscreen and heat insulation paint we use only needs to apply 0.1-0.15mm to block the fierce sunlight and reflect more than 92% of the solar heat. Many people who have not experienced it themselves cannot believe that there is such a magical product, but the truth is In this way, a thin layer can keep you away from the hot summer and enjoy the coolness of the hot summer. Even if you install an air conditioner, its arrival will be greatly energy-saving, environmentally friendly, comfortable, fresh and cool, and you can enjoy the natural breeze and return to the big Feeling natural is what we all dream of.

2. Scope of application: It is used for metal substrates such as zinc-iron tiles and concrete to isolate the surface of objects from solar radiation heat, which can achieve heat insulation, cooling, waterproofing, rust prevention, and achieve the effect of renovation.

3. Performance: The product is non-toxic, safe and environmentally friendly, easy to apply, and has strong adhesion. It can prevent the damage of solar radiation heat to the coated object, and can fundamentally solve the chronic problem of cracks caused by thermal expansion and contraction of metal tiles and concrete floors. Extend the life of zinc iron tile.
4. Product characteristics: The product has fine gloss, good gloss retention, good color retention, good adhesiveness and strong adhesion; the cooling effect is ideal, and the construction is sprayed to shorten the construction period. Reduce labor costs.

5. Insulation effect: On a normal sunny day, the temperature is above 33 °C. Compared with the workshop without thermal insulation treatment, the indoor temperature after coating is reduced by 5--10 °C. The roof temperature difference is 15--30 °C. The higher the temperature, the more obvious the cooling effect.

6. Reduce energy consumption: save about 15%-30% of electricity consumption.

7. Service life: According to customer needs, the products are 8 years, 10 years, and 15 years or more.

8. Construction impact: The disadvantages of traditional cooling are abandoned, no water and electricity costs will be incurred in the later stage, no noise, and no damage to the building during construction.

2. Project focus

Due to the need to repaint the surface of the iron tile, it is necessary to focus on solving the following problems:

2.1. Solve the problem of safe operation at height;

2.2. Solve the problem that the floating rust of the fixing screws on the metal tile cannot be removed, and the iron tile is rusted and rust-proof and anti-corrosion;

2.3, to solve the problem of long life, high weather resistance, obvious heat insulation and cooling;

2.4. To solve the problem of water resistance of the coating, the coating needs to have excellent water resistance to avoid problems such as foaming, peeling and discoloration of the paint film under long-term rainwater infiltration;

2.5. To keep the exterior wall as new as new, the coating needs to have good weather resistance, color retention, stain resistance, and at the same time, the coating needs to have excellent scrub resistance;      

2.6. Solve the problem that the roof has high elastic thermal expansion and contraction such as glass glue or asphalt on the cracking of the sunscreen and heat insulation paint film;

2.7. Solve the problem of aging and chalking of the old paint film on the metal tile, and strong adhesion of the repainted paint film.