Analysis of cooling mode of steel structure plant in summer

Cooling of steel structure plant is a comprehensive topic. In order to solve this problem, it is necessary to apply the right medicine. First of all, we must find the key factors that affect the temperature of the steel structure plant, key points management, and then choose the appropriate method to deal with other relatively minor factors, to achieve a good indoor environment and high cost performance.

First, steel structure plant insulation and cooling

Steel plant insulation can isolate most of the solar radiation, transfer heat, reduce indoor greenhouse effect. This can reduce the temperature of the plant and improve the environment of the steel structure plant. There are two commonly used methods: Cover the roof of the steel structure plant with thermal insulation cotton. The insulation wool used for ordinary roofs is glass wool, with a thickness of 50mm, 75mm and a density of 10kg/100mmm. The indoor temperature can generally be reduced by 5-8 ° C, and the construction process is complicated. If the old workshop is renovated for thermal insulation, the original roof needs to be removed, the steel wire mesh is drawn, the glass wool is laid on the steel wire mesh, and the steel structure is covered with the original roof. Second, spray thermal insulation reflective coating on the roof panel. The product has good thermal insulation function, steel structure can be coated with metal, concrete, gray wall, wood structure surface, asbestos tile, plastic, glass fiber reinforced plastic, rubber and other surfaces. The coating thickness is 0.25mm, its effect is compatible with 10cm-15cm glass wool, it can reflect 99.5% of the infrared, 92.5% of the visible light, the sound insulation effect reaches 68.5%, the steel mill 5000 uniform sound insulation effect is more than %. Fire Class A, completely non-combustible. Durability, service life of more than 15 years (see engineering materials file). If this method is adopted, the construction is convenient, no damage to the original roof, and can prevent the aging of the roof. After and before construction, the surface temperature difference of the plate can reach 20 ° C, the indoor temperature difference can reach 8-10 ° C, and the energy consumption of the steel structure plant can be significantly reduced by 30-70%.

The second is the steel structure plant ventilation cooling

Because some of the machines in the steel structure plant produce heat and steam, if these hot air and steam are not discharged in time, they will accumulate in the plant, thereby increasing the temperature of the steel structure plant and affecting the environment of the steel structure plant. The solution to these problems is to ensure fair ventilation of the plant and install appropriate ventilation systems. The installation of a fair exhaust system will greatly improve the air environment of the steel structure plant and greatly reduce the temperature of the steel structure plant.

(1) Install the roof non-power ventilator

An unpowered ventilator is a ventilation device that relies on the principle of air convection. When the indoor and outdoor air environments are different, air activities will be generated, thereby eliminating indoor exhaust gas and hot air. It has the advantage that it does not require extra electricity and is more environmentally friendly. However, it is very dependent on the environment and cannot be forced to exhaust. Products mainly include turbine ventilator and strip ventilator (lighting with ventilation), roof ventilator and so on.

(2) The roof of the forced exhaust fan is installed

A power fan is a ventilation device that is electrically driven. It has a good exhaust effect and can adapt to any environment. An unpowered ventilator is a ventilation device that relies on the principle of air convection. When the indoor and outdoor air environments are different, air activities will be generated, thereby eliminating indoor exhaust gas and hot air. It has the advantage of being more environmentally friendly and does not require extra electricity. However, it is very dependent on the environment and cannot be forced to exhaust. The products mainly include turbine ventilator and strip ventilator (lighting with ventilation), roof ventilator and so on.

Forced cooling means the installation of cooling fans on the roof of the workshop. The cooling fan is a machine that uses the principle of water cooling to cool the air and delivers cold air to the room through a forced exhaust fan. It can keep the indoor temperature of the steel structure workshop at a quiet temperature of 26-30℃. Its power consumption is comparable to 1/8 of the air conditioning. The cost is 1/2 of the air conditioning, which is a good way to force the cooling of the workshop.