Energy-saving indicators

I found these online; I’m not sure if they will be helpful to the original poster. The life cycle of a building lasts for fifty to sixty years, and energy is consumed at every stage, from the production of building materials, construction and transportation, daily use, maintenance, to demolition. Among these, the energy used for everyday purposes such as air conditioning, lighting, and elevators accounts for the largest portion. Since air conditioning and lighting account for the majority of a building’s total energy consumption, the \"daily energy savings indicators\" for green buildings focus primarily on the electricity used for air conditioning and lighting. Meanwhile, these \"daily energy savings indicators\" are defined as the overall power efficiency of the air conditioning and lighting systems during peak summer periods. The purpose of daily energy savings is to reduce consumption. In the daily energy use of buildings, air conditioning and lighting account for the largest share; in summer, air conditioning consumes around 40 to 50% of a building’s energy use, while lighting accounts for as much as 30 to 40%. Therefore, focusing on energy savings in air conditioning and lighting is the most effective approach. On the other hand, due to the long service life of buildings, the cumulative energy-saving effect is far greater than that of other industrial products. We can even say that energy-efficient architectural design is the most promising aspect of a country’s energy-saving policies. Rules for the implementation of laws on daily energy conservation: Currently, building energy-saving design regulations are already included in China’s \"Building Technology Regulations\". It is estimated that after 20 years of implementation, it will be possible to reduce peak electricity consumption for building air conditioning by at least 16%, which is equivalent to 7% of the country’s overall peak electricity demand – roughly the capacity of 2 large thermal power plants, or all of the country’s hydroelectric plants, or one large nuclear power plant. In terms of the cumulative effect over the whole year, it is possible to save approximately 4.6 billion kWh of electricity used for air conditioning each year, which is equivalent to reducing carbon dioxide emissions by around 7 million metric tons. This helps to mitigate the greenhouse effect on Earth’s climate, making a significant contribution to environmental protection. The indicators and benchmarks for daily energy conservation refer to these standards. When evaluating the \"daily energy conservation indicators\" of green buildings, the required standards for energy consumption of the building envelope are 20% stricter than those stipulated by current energy-saving regulations. Since air conditioning and lighting account for the majority of a building’s total energy consumption, this indicator also imposes stricter requirements on the energy efficiency of air conditioning systems and lighting systems, setting higher goals for the energy-efficient design of buildings. The main evaluation criteria include the heat load ratio of the building envelope, air conditioning efficiency ratio, and lighting energy-saving ratio. In addition, a certain bonus factor is applied when evaluating the proportion of renewable energy used, in order to encourage the adoption of such energy sources. How to meet the qualification standards: The \"daily energy-saving indicators\" for green buildings focus on energy-saving designs for air conditioning and lighting, which are the areas with the highest power consumption. The evaluation of energy savings is centered on three main aspects: energy-saving design of the building’s exterior envelope, air conditioning efficiency, and lighting efficiency. Key aspects of energy-efficient design for building envelopes include: the window-to-wall ratio of the building envelope, external shading designs for openings, the orientation of the building, avoiding envelope designs with full glass facades, and roof insulation. Key points for designing energy-efficient air conditioning (focusing on central air conditioning): Building spaces should be zoned according to the duration of air conditioning use; appropriate air conditioning systems should be selected based on actual heat load predictions; and high-efficiency heat source units should be used. Key points for energy savings in lighting: use bright designs for interior walls and ceilings in buildings, employ high-efficiency lighting fixtures, make use of natural light as much as possible, and utilize automatic daylight-saving lighting control systems.