* * * steel for buildings 10480 tons, and the amount of recycled steel accounts for more than 85% of the total steel consumption, which is 26% more energy-saving than buildings built with ordinary steel. Square bricks for floors and ceilings are also made of recyclable materials. The energy-saving design of Hearst Building is very effective and accurate. Compared with the surrounding office buildings, the building can save energy by 25%. The building is designed with minimal interior walls to increase the utilization of natural light. Even if there is no window seat, you can still feel the sunshine, making the lights useless during the day. At the same time, the sunlight sensor is used to adjust the indoor artificial lighting. According to the amount of external natural light, the intensity of the internal artificial lamp will be automatically adjusted to save energy. In addition, a personnel activity detector was installed. At lunch time, when employees leave their desks, the sensors will turn the lighting and computers in the corresponding positions to energy-saving state.
Hearst building adopts efficient heating and ventilation equipment, making maximum use of outdoor air conditioning and ventilation-natural ventilation can be realized in the building for up to three quarters every year.
The roof of the building is designed to collect rainwater, which will reduce the rainwater discharged into the urban sewage system by nearly 25%. The collected rainwater will be stored in a huge recycling water tank in the basement, filtered and used for heating in winter and circulating heating, supplementing the evaporated water in the office air conditioning system (increasing the indoor humidity), watering the plants outside the building (about half of the amount of plant irrigation), and even becoming the water source of the "ice waterfall" for cooling and heatstroke prevention in the hall.
The lobby on the first floor of the building mainly relies on the radiant stone floor to adjust the heat and cold. In winter, hot water enters the pipeline buried under the floor from the circulating system, and the heat generated can form a comfortable space in the space 1.8 meters high on the floor. In the hot season, the ground cooled by cold water can absorb the heat generated by sunlight on the floor. Brandon Haw, a senior partner of Foster Architects, compared this effect to the feeling of walking into a church on a hot day. "All the stones are cold." In September, 2006, when the Hearst Building opened, it won the Green Certification Gold Award from the US Green Building Council (USGBC). A century has passed, and the literary center of new york City has once again become a green pioneer.
The Green Building Council of the United States has established a LEED system to comprehensively check the energy consumption, water consumption, indoor air quality and the use of recyclable materials in buildings and their surroundings. The survey named "Sustainable Design" is divided into passing (26 to 32 points), gold medal (above 39 points) and platinum (52 to 69 points). Getting certified is not an easy task. Many real estate developers in the United States take "working hard for LEED" as their marketing slogan. In April this year, Hearst Group, as a pioneer of environmental sustainable development, announced that it would implement the "zero loss target" policy in its headquarters building, thus becoming one of the first companies to implement the plan in an office building of the same size. It includes the garbage collection process. The cafeteria, coffee shop and executive kitchen in the building are managed by restaurant staff. All the organic wastes generated by these departments are collected by Sprint Recycling and transported to a composting plant in new york, which can digest 95% of the kitchen waste in landfills.
In addition, all discarded paper products, metal products, glass and plastic products produced by Hearst Building will also be recycled by Sprint Recycling Company, and all electronic wastes will be properly treated and recycled to avoid pollution of air, soil and water by mercury and other heavy metals. Wood used for decoration in buildings also has sustainable certification.