What technology does the application of building water-saving technology mainly refer to?

The construction of Haixia Tower with a height of 632m will explore the green building area to reflect cultural care, strengthen cost-saving and efficiency, and ensure smart and convenient principles. Comprehensive energy-saving and new energy utilization, water-saving rainwater and sewage collection and utilization, and conservation of materials Utilize green building materials, control indoor air pollution and improve indoor environmental quality to achieve efficient and green operation throughout the building life cycle. Haixia Green Building Standard US LEED certification system aims to build the first dual-certified green super high-rise building

( 1) Technical principles

1) Establish an environmentally friendly relationship between buildings and cities, improve the utilization rate of land resources, and create a cost-effective, healthy, efficient and high-quality microclimate environment with an indoor environment compliance rate of 100%

2) Combination The unique climate environment and the characteristics of the building body optimize the building energy-saving design, make full use of re-energy, rationally realize energy cascade utilization, and improve the building energy utilization efficiency to a comprehensive energy-saving rate of 60%

3) Reduce the use of re-resources and reduce emissions The design optimizes and efficiently utilizes rainwater and sewage resources in buildings to improve water resource utilization and achieve non-traditional water resource utilization rates below 40% in office malls and 25% in hotels.

4) Use local materials based on local conditions Optimizing green building materials ideas improves the utilization rate of 3R building materials and the utilization rate of recycled materials exceeds 10%

5) Strengthen the management of engineering construction department and technological innovation to limit resource waste and reduce the negative impact of the construction environment to achieve green construction

6) Set up a comprehensive supervision platform for energy and environmental information to improve the intelligent level of operation management and property management and ultimately achieve building energy conservation and emission reduction goals

(2) Technical measures

Haixia implements green The main technical measures adopted in the building are:

1) Distributed energy utilization technology Distributed energy system comprehensive energy utilization technology close to users, cascade utilization, high energy utilization efficiency, environmental friendliness, safe and reliable energy supply, etc. Features attract the attention of various governments, enterprises, developers, and operators. There are ten types of distributed energy systems. Independent buildings use combined cooling, heating and power (CCHP for short). This project's gas-fired combined cooling, heating and power system is a gas energy production In the heat, electricity and cooling co-production system, urban gas fuel-utilizing gas turbines, gas internal combustion engines and other equipment are burned to obtain high-temperature flue gas. They are first used to generate electricity and utilize waste heat for heating in winter; through-drive absorption refrigerators are used for cooling in summer; exhaust gases are also used The energy utilization rate of providing hot water is generally about 40%, which increases by about 80%, thus saving energy

2) Variable air volume air conditioning technology The variable air volume air conditioning system utilizes changes in the air supply volume entering the air conditioning area to meet load changes. Compared with the constant air volume system, the advantages are energy saving: ① Reduce the operating energy consumption of air conditioning fans and reduce the power consumption of air conditioning fans by 50% on average. ② Use outdoor fresh air as a cold source to reduce the operating energy consumption of the refrigeration system. ③ Energy state transfer fully considers the instantaneous load and the heat balance between inside and outside areas. The total air supply volume of the system requires the regional air volume value of each section. The former generally accounts for 70% to 90%, which significantly reduces the total air supply volume of the system. The current variable air volume air conditioning system mainly uses a single duct variable air volume system and a double duct variable air volume system. Two types of variable air volume end variable air volume boxes in the system and two types of variable air volume air outlets

3) Heat recovery and utilization technology Building operation projects Hotels, offices, etc. produce hot air, especially Haixia 24 Direct outdoor business space empty garden for summer gathering The hot air with higher temperature is used for heat recovery. The technology department uses heat pump type hot water heaters to collect hot air. The hotel provides hot water production. Haixia designed air-water heat pump system using fan coil unit with ECM motor

4 ) Source heat pump technology uses shallow heat resources for heating, cooling, and environmentally friendly air conditioning systems. In winter, soil heat is extracted and supplied indoors for heating in summer. Indoor heat is released to release soil characteristics, which is environmentally friendly and has no combustion process pollution emissions; there is no need to use cooling towers to discharge heat to the outside; Extracting water destroys water resources. The operating efficiency of source heat pumps is 40% higher than that of traditional air-conditioning systems. Pollutant emissions from source heat pumps are reduced by 40% compared with air source heat pumps and by 70% compared with electric heating

5) Turbine Wind power generation technology has advantages: wind power is clean and self-sourced; second, wind power technology matures and relies on safe energy; third, the economic efficiency of wind power has improved, and its power generation is already close to coal power, lower than oil power and nuclear power; fourth, wind power The power generation construction period is short, and the installation of a single unit only takes a few weeks. Windmills are divided into two main types according to the axis of rotation: horizontal axis type and vertical axis type. Compared with the two, the vertical axis type is simpler. The design of the axis and the wind direction is vertical and must follow the wind. Direction change The rotation of the steering wheel depends on the resistance difference between the downwind and upwind blades. Haixia uses a vertical axis turbine generator

6) Rainwater collection and treatment technology Rainwater seeding and self-resource collection system to collect rainwater

Water is used for flower and tree irrigation, toilet flushing, building internal cleaning, equipment cooling, etc. to reduce the use of self-water rainwater collection and utilization technology, including collection, storage, purification, utilization and other four links. The collection process and waste interception before storage will reduce the operation of water treatment facilities. The higher load affects our research on setting up necessary wastewater interception facilities to improve utilization efficiency

7) Green construction technology Green construction refers to the premise of ensuring quality, safety and other basic requirements for project construction, and integrating management and technology progress to the limit to save resources and reduce Negative impact on the environment Construction specifically implements four aspects of environmental protection, that is, effective construction management to strengthen environmental protection, material conservation and material resource utilization, water conservation and water resource utilization, energy conservation and energy utilization, energy conservation and construction protection