Environment protection and energy concept in the construction of water supply and drainage design

Paper Keywords: environmental protection, energy conservation, construction, water supply and drainage
Abstract: energy saving is the future of social life an eternal theme, a large building water saving potential, if we can make full use of solar energy and pressure pipe network and the full use of water-saving sanitary ware, can save the necessary building water about 50% of energy, is a major event benefits the country. And the vast majority of building water new materials, new equipment, new technology and environmental requirements are closely related technology to achieve the full advantage of these new buildings to the drainage Green design is our responsibility. This paper analyzes the design of building water saving measures.

In recent years, water consumption of urban life in China was an increasing trend year by year. Urban domestic water, including residents of water and water and other public buildings, most of the water in the building process completed. So to save the city must do a good job building water-saving water. Construction water and energy conservation is a systems engineering, in addition to saving water and energy should be developed on the laws and regulations, strengthen the daily management and public education, the use of price leverage to promote water conservation work, effective technical measures should be taken to ensure the construction work of water and energy saving depth in our country.

1. Promote the use of new water-saving devices
1.1 promote the use of high-quality pipe, valves,
As galvanized steel rust will cause water pollution, and then use the idle time will rust when released causes the water to waste. At the same time the joints will leak if the corrosion of water seepage. If using the new plastic composite pipe such as pipe, steel plastic composite pipe, stainless steel, brass, PP-R pipe, PE pipe, PVC-U pipes and other such waste can be a good solution to the problem.

In the construction of drainage systems, high water use spiral muffler pipe can effectively reduce the vertical drainage problems arising from the noise. The level of conversion of residential building indoor water pipes and pipes used after the conversion has a good anti-vibration flexible connection of the cast iron pipe system with the traditional plastic, steel products, compared with strong, durable, high temperature, low noise, anti-corrosion, fire and other functions. in building outdoor drainage system, pipes can be wrapped with polyethylene plastic, with traditional drainage and sewerage channels, such as concrete pipes, ceramic pipes, etc. have an advantage in many aspects. it as a new type of plastic composite gravity gravity of pipeline products, profiled by the steel-plastic composite strip made by spiral winding welding, the wall smooth, high strength . This kind of pipes with corrosion, sealing, light weight, easy installation, long life, the advantages of recycling. Its stainless steel hoop connection and electrical connection with both hot melt connection, simple, reliable, zero leakage.

1.2 promote the use of water-saving sanitary ware and water distribution apparatus
A good set of water saving devices can produce a very large role. For example, usually shower water more than 20 liters per minute, while water-saving sprinklers 9L per minute of water only about half the amount of water saved. visible health equipment and water distribution apparatus directly affects the performance of the effect of saving the building. So in the choice of water-sanitation equipment and distribution equipment, in addition to consider the price factor and the use of objects, but also examine the performance of its water advantages and disadvantages. vigorously promote the use of water-saving sanitary ware and water distribution equipment is an important aspect of building water-saving.

2. Improve the hot water circulation system
As people's living standards improve, the district focused on the application of hot water supply system has also been fully developed, the quality of building hot water circulation system has gradually become more and more important. Most of the centralized hot water supply system suffers from waste, mainly in open water device, can not be met in a timely manner using the temperature of hot water, but to let go of some cold water to function properly after use. this pArt of the cold water use efficiency should not have, so called Invalid cold water. This is a waste of water design, construction, management, and many other causes. Therefore, the new buildings in the choice of centralized hot water supply system to be taken into account when the cycle way and engineering costs of water-saving effect, according to the nature of construction , building standards, the specific circumstances of regional economic conditions or in selected branch riser loop recycling means to minimize or eliminate the waste of water is invalid.

3. Control the flow of overpressure
In our current <"Architecture water supply and drainage design specification"> in, although people on the household water supply branch pipe fittings and the maximum pressure to make certain restrictions, but only pArts from the water pressure is too high to prevent damage caused by in perspective, does not prevent the overpressure from the perspective of a flow, so pressure to be too lenient, restricting the flow of overpressure basic did not work. If the design does not consider this aspect, then the water will cause great waste. Therefore, building water supply system should be based on the flow of overpressure of the actual situation, the pressure of the water supply system to make a reasonable limit.

<"Architecture water supply and drainage design specification"> Article 3.3.5 stipulates that the high rise building water supply system should be vertical pArtition, the pArtition with the minimum sanitary ware water hydrostatic pressure at the point of not more than 0.45M Pa, special circumstances should not be greater than 0.55M Pa. and sanitary appliances should be the best use of water pressure for the 0.20.-0.30M Pa, most of the overpressure in the flow. According to the data Research, when the hydrostatic pressure of the water distribution point is greater than 0.35M Pa, the tap volume increased significantly. recommended minimum water supply system of high-rise district sanitary ware hydrostatic pressure of the water distribution point is greater than 0.35M Pa, take relief measures.


4. Rational design of pump operating parameters
In no way to adjust the tank water should be used in high efficiency variable speed pumps. Variable speed pump applications can avoid the water supply system in the worst case of water supply caused by the calculation of water, electricity and waste problems, the scarcity of resources in various Today there are broad prospects. Similarly, in the hot water supply system, as the pump automatic control technology and various monitoring instruments and the emergence of new materials, temperature, circulation pumps also can be used to run the automatic variable flow variable lift control system. can Consider the installation of taps with a simple flow indicator or the farthest point of the installation of water distribution temperature sensing element, the signal transfer to the circulating pump control system, according to the different water conditions with the command of hydraulic pump switch random stopping time when change its operating parameters, thus saving power consumption. using frequency control devices than the general water supply equipment 40% 20% saving. reposted elsewhere in the Research Papers Download http://www.hi138.com 5. to establish reasonable and effective water handle recycling system
Now with the development of society, to promote building green ecological community to become a new direction for housing construction. Residential building rainwater collection system to collect rain water after the water cycle and water features along with access to water treatment systems, stormwater treatment system uses more advanced MBR that the membrane biological treatment system, that is, biological degradation and membrane separation technology and efficient combination of a new type of efficient wastewater treatment and recovery process. collected rainwater will be used for residential water features, car wash, green sprinkler and so on.

6. Fire setting and the pressure storage tank
High-rise building fire water and domestic water consumption is often a far cry, fire water supply system design flow may be the life of a good water supply system design flow times. As the fire continued in the fire water storage requirements to meet the fire of the total water use during the period. Therefore, Fire water storage in the pool in building and life circumstances, greater than the amount due to the fire water storage capacity, which results in life, domestic water supply in the storage pool to stay too long, caused by residual chlorine has already run out of the water quality deterioration. so as ensure the pool water quality meet health standards, should be regularly replaced all the water in the pool water (including fire water). When the difference between the two large storage capacity of the system when the two sub-systems of the storage tank was built, both to extend the fire He's changing the water cycle, water storage, (thereby reducing the waste of water), can guarantee to meet the requirements of drinking water quality. Meanwhile, the fire storage tank should be as much as possible with the swimming pool, water features combined, so that a water use , re-use and recycling. In addition, the high-rise buildings or the fire district should be as common pool and the pressure pump. The fire should be one of the largest storage capacity of a high-rise building to calculate the water demand. In this way, pressure can prevent a fire bring many of the architectural design technical issues, but also can save project construction and equipment investment, lower operating costs, ease of centralized management, but also to avoid more than a dozen large number of fire water storage tank and regularly change the water caused by waste.

7. Use of solar hot water heating for buildings
Preparation of hot water using solar energy, both energy conservation and environmental protection. Multi-storey residential building solar energy should be dispersed, the public parts of the stairwell located in the tube wells, all households located in the solar tube wells in and out of water, solar energy collection per household hot plate hot water tank installed in the roof. rainy days when you can not use solar power, hot water from the gas water heater in the room to add.

In addition to the upper layers of the high-rise residential solar water heater can be set to spread, the other layers should not be a distributed set of solar energy, should be focused on solar hot water heating system. High-rise buildings have a direct use of solar energy use and direct use of indirect use is m. the entire roof are arranged into groups of poly thread hot plate solar collector, water tank located at the top of the staircase, the hot water tank equipped with electric auxiliary heating equipment, hot water use for reference the next time, circulation pump installed in tank rooms; indirect use of solar panels on the roof or focus setting and landscape combine to set the road in the district of shelf space above, heat exchanger, hot water tank in the basement equipment room, the preparation of a good hot water and then pumping frequency to each user. When solar energy is low, with gas fired power auxiliary heating.

8. Conclusion
With the accelerated process of urbanization, more and more people from the countryside into cities, has greatly contributed to the housing boom. In the city's total water consumption in residential buildings in the proportion of water increases every year, making the building water and energy saving not be ignored. commercialization of housing, people spend a lot of money buying houses, hoping to buy was value for money, a good home environment allows the owners liking. Therefore, the design of building water system should be fully taken into account, to meet the water security and stability and economy of the premise, as far as possible taking into account the design of environment protection and energy issues. In short, if you can reduce the man-made full use of the water-saving sanitary ware, you can save the energy needed for building water area of ​​about 5%. Therefore, we must advocate, called for universal water conservation, so resources are not destroyed, and can enter the healthy water quality, water recycling. Links http://www.hi138.com Research Papers Download