Abstract:The use of renewable energy and passive design to achieve energy conservation in high-rise buildings has reduced the comprehensive energy consumption of buildings by 464%, and efficient energy and renewable energy accounted for 76% of the total energy savings1%。
Carbon emissions throughout a building's life cycle can be controlled through the impact of the design phase.
Interventions in the design phase can have a positive impact of 40% to 100% on a building's carbon emissions.
This year's focus is on the use of renewable energy sources to achieve comprehensive energy savings, especially for high-rise buildings, with the goal of minimizing energy consumption. The building's renewable energy consumption should be greater than or equal to its own energy consumption, and the operator should focus on the energy consumption management of the building.
A low-carbon design strategy and index system for full life cycle management have been established, and the carbon emissions of the global life cycle of carbon buildings have been dismantled and split, and a low-carbon index system and technical strategy have been formed.
A complete building energy-efficient design system, including low-carbon planning and building construction, high-performance maintenance structures, intelligent and efficient M&E systems, and renewable energy utilization.
Through parametric design, load simulation, effective control logic and a variety of complementary customer interaction and total settlement, the energy efficiency of the system is improved, and the operation strategy of traditional manual control is optimized.
A set of working methods based on the whole process control of design, construction, commissioning, operation and maintenance have been established.
Ways to achieve smart energy targets through natural ventilation and high-performance maintenance structures.
73% of the target is achieved through efficient energy use.
In terms of maintaining the structure, the energy saving target is achieved by improving labor performance and optimizing parameters. By improving the roof heat transfer coefficient and curtain wall design, a high-performance maintenance structure was realized.
In terms of ventilation and lighting, a two-storey atrium and openable exterior windows are set up to achieve natural ventilation and lighting.
Natural lighting measures are adopted, and the visible light transmittance of the curtain wall is not less than 06. Some measures have also been taken to improve the lighting effect.
Through the preferential use of passive technology, the overall energy consumption of the building has been reduced by 146%, accounting for 23% of the energy saving of the entire project9%。
The energy efficiency index of the refrigeration machine room is higher than the domestic standard, and the energy efficiency target of the entire refrigeration machine room has reached 6 through high-efficiency equipment and precise control4。
The project is equipped with a dual temperature cold source, with room temperature water of 6 to 12 degrees Celsius and medium temperature water of 16 to 19 degrees.
The two systems of V** system (variable air volume) and active chilled beams were taken into account when selecting the cooling system, with a floor area of 2,000 square meters and a floor height of 45 meters. Considering the advantages and disadvantages of the system, the cold beam system was selected, and the use of dual-temperature cold source was more advantageous.
Chilled beams offer advantages in terms of comfort, investment and building space occupancy.
The cold beam uses a dual-temperature cold source and uses high-temperature water to cool the coil, which has the advantage of thermal power.
The heat of the data room of the water heat pump is used to prepare domestic hot water, and the hot fresh air system is used at the end, which has a significant energy-saving effect, and at the same time, the intelligent lighting system is used to make reasonable use of natural lighting and intelligent control of LED lamps.
The energy efficiency of the lighting system has been improved, reducing the energy consumption of lighting by more than 30%.
The energy efficiency improvement of the lighting system contributes 20% to the energy efficiency of the entire building.
The A-class energy-saving elevator is 30% more energy-saving than the traditional C-class elevator.
Energy-saving elevators adopt energy-saving measures such as energy feedback, intelligent body control and frequency conversion.
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