"I have a room where it is warm in winter and cool in summer" is a dream of older children. Either write it in the composition or share it in class. Now the popularity of air-conditioning and the planning of plumbing are perfect. Winter is warm and summer is no longer a dream. Covering a blanket in summer and wearing shorts in winter are very pleasant. However, behind this coziness, huge energy losses are in exchange. The haze is severe every winter, which is caused by the large amount of fossil fuel burning during winter heating.
So, how can we not only enjoy the cool summer, the warmth of winter, but also save energy and reduce the damage to the environment? The national "Thirteenth Five-Year Plan" proposes the following five requirements for green buildings. 1. The proportion of new green buildings in 2020 will exceed 60%. 2. Increase the enforcement of green building standards. 3. Green building-related requirements will rise to legal systems. 4. Fiscal and land support policies have been strengthened. 5. The completion will be included in the government performance evaluation. In order to adapt to the implementation of the national green building, our company launched a new type of fire doors-energy-saving fire doors.
How fire doors can be considered energy-saving must be understood from the three elements of thermodynamic heat transfer: the loss of thermodynamic heat (heat exchange) and the convection, conduction, and radiation of heat.
Convection is the circulating flow of hot and cold air flow between the gaps between doors and windows, which causes the convection of gas to drive heat exchange, and the circulating convection of hot and cold air generates heat loss. Heat conduction is the transfer of heat by the molecular motion of the material itself. Heat conduction is transferred from one side of the object to the other. Radiative heat transfer is the direct transfer of energy in the form of rays, ie infrared rays. Regardless of the fire door made of any material, if it can most effectively block and control the three types of heat exchange mentioned above, it can be called the best energy-saving fire door.
The energy-saving fire door is based on the three factors of thermodynamic heat conduction for R & D and innovation. There is a big difference from the material selection to the structure called ordinary fire door. The first is the selection of materials. Different materials have different thermal conductivity. (The thermal conductivity refers to the thermal conductivity in 1 hour. "The thermal conductivity refers to a 1m thick material under stable heat transfer conditions. The temperature difference between the two surfaces is 1 degree (K, ℃). ), In 1 hour, the heat transferred through an area of 1 square meter, the unit is watts / meters · degrees.) The lower the thermal conductivity, the better the insulation effect. In this way, the indoor and outdoor heat transfer is reduced, and the fluctuation of the indoor temperature with the change of the external temperature is more small.
As far as temperature is concerned, the temperature difference between using energy-saving fire doors and ordinary fire doors can be about 4 ° C. In summer, to keep the indoor temperature of a 100-square-meter house at about 26 ° C, a two-horsepower air conditioner consumes 10 to 12 degrees of electricity per day. If you use an energy-saving fire door with thermal insulation, you can save at least 40% of electricity, that is, the air conditioner can be turned on for 2 hours, and the indoor can maintain a comfortable temperature of 5 to 6 hours. In this way, you can save at least 4 to 5 kilowatt-hours a day, and save 70-90 yuan per month.
In winter, the cost of heating is not a small expense. Judging from the current mainstream heating methods, the cost of plumbing, electric heating and air conditioning heating is about 600-1000 yuan a month, which is not the whole room heating. According to this standard, the cost of a family in the heating season is roughly 2,000-3,000 yuan, and if it is in accordance with the 40% energy-saving standard, it can save 800-1200 yuan in a winter.
This new type of energy-saving fire door can not only meet the fire protection requirements of buildings, but also save energy, and can save 70 yuan in electricity costs per month. Heating costs in winter can also save a lot.