Domestic XX Square Underground Garage Project

“ HKZNL” Light guide tube Daylighting system Economic Analysis Report

  Hong Kong Positive Energy (Germany) Technology Group

1、 Project description:

Project name: XX Square Underground Garage Project

Roof category: concrete roof

Area of daylighting area: about 12480 ㎡ (refer to drawing data)

2、 Project lighting design requirements ：

Design basis:

·GB/T50033-2013 Standard for Daylighting Design of Buildings;

·GB/50034-2013 Standard for Lighting Design of Buildings;

·GB/50189-2005 Design Standard for Energy Efficiency of Public Buildings;

·GB50057-94 Code for Design of Lightning Protection of Buildings;

·DBJ 01-93-2004 Technical Specification for Roof Waterproofing Construction;

·GB 50180 Code for Planning and Design of Urban Residential Areas;

·CECS56:94 Standard for Classification of Light Distribution and Lighting Design Parameters of Indoor Lamps;

·Other relevant national and local current regulations and specifications;

·Relevant design requirements and data provided by Party A.

according to According to GB/T50033-2013 Standard for Daylighting Design of Buildings, XX City belongs to the No IV The annual average illuminance of the area is 30 kLx ≤ Eq ＜ 35 kLx. The illuminance is calculated based on the annual average illuminance of 32 klx: the average indoor illuminance is 75lx, and the area of lighting area is 12480 ㎡ 。

Note: When the outdoor critical illuminance is greater than 32 klx, the larger the indoor illuminance is, the larger the lighting range is, and the brighter the interior is.

Suggestions on lighting layout:

Distribution according to degree requirements, use 104 sets （ZNL530-Y） “ HKZNL ” Light guide tube daylighting system 。 The average indoor illumination is 75lx. (See the design layout for details)

3、 Economic analysis of investment recovery:

1. Direct power saving analysis:

Note: Since the light guide tube daylighting system provides daytime lighting, Shandong can save 10-12 hours of electricity and lighting power on average every day.

(1) According to GB/T50034-2013 Standard for Lighting Design of Buildings, when the indoor illumination is 75lx, the power consumption per unit area is 4w/m2 (fluorescent lamp); It can be seen from the drawing that the lighting area of the light guide tube daylighting system is 12480 ㎡.

(2) The installation of light guide tube daylighting system in this project can save power consumption in the daytime, and the average daily daylighting is 10 hours.

(3) From the above (1) and (2), it can be seen that the power consumption saved by the light guide tube lighting system every day is:

four w×12480㎡×10h=499.2kw.h

2. Annual indirect saved ballast power consumption:

Note: The power consumption of fluorescent lamp ballast accounts for about 30% - 35% of the lighting power consumption. Calculated at 30%, the daily power consumption saved by its ballast is:

499.2kw.h×30%=149.8kw. h

Daily lighting power and total power consumption can be saved about:

499.2kw·h+149.5kw·h=649kw·h

The total electricity cost for daytime lighting that can be saved every year is about: (the electricity cost is calculated based on the commercial electricity consumption of 1 yuan/kwh)

649kw · h × 365=236885kw · h × 1 yuan/kwh=236885 yuan

3. Analysis of saving consumables (saving the replacement cost of lamps and lampshades):

The maintenance cost is about: 236885 yuan × 3% ≈ 7107 yuan/year

The replacement cost is about: 236885 yuan × 5% ≈ 11844 yuan/year

The annual total of maintenance and replacement costs saved for electric lighting equipment is:

7107 yuan+11844 yuan=18951 yuan/year

To sum up, items 2 and 3 adopt “ HKZNL ” Light guide tube daylighting system The annual operation cost saved is about: 236885 yuan+18951 yuan=255836 yuan/year

4. Government special fund award

5. Save the cost of regular manual cleaning:

The lighting system of the light guide pipe is easy to clean. Because the designed light cover is hemispherical, the dust on the light cover can be washed away by rain and wind. The product can achieve self-cleaning effect and avoid the cost of regular manual cleaning.

6. Energy saving and emission reduction:

(1) In terms of energy conservation and environmental protection, the production process of electricity will consume a lot of non renewable resources, and will release harmful gases such as carbon dioxide while lighting, accompanied by thermal pollution.

The following data are calculated according to national standards. At present, China is mainly a country with thermal power generation. The fuel used by thermal power plants is basically coal, and 49% of the total coal consumption in the country is used for power generation. Therefore, in the energy-saving analysis, we mainly calculate the coal consumption. It is pointed out that 0.4 kg of standard coal and 4 liters of purified water will be saved for each kilowatt hour of electricity saved.

In this project, the annual energy conservation in the area using coal for power generation is:

Using coal for power generation, coal is a non renewable energy and cannot be compared with clean, green and natural natural light.

(2) Emission reduction analysis:

In this project, the use of light pipe lighting system can save power and energy for one year two hundred and thirty-six thousand eight hundred and eighty-five Kilowatt hour, which means that harmful gases such as carbon dioxide are prevented from being emitted into the atmosphere. The following data are calculated in accordance with national standards, which clearly indicates that different amounts of harmful gases will be released for each kilowatt hour of electricity produced.

From the above data:

7. Health improves work efficiency

Research shows that long-term lack of Daylighting It will cause the disorder of the body's biological clock. A slight disorder of the biological clock can lead to "jet lag syndrome", and a more serious disorder will lead to short-term or long-term health problems, which have been confirmed by the production line workers. The light guide tube daylighting system enables people to bathe in the sun and work in a healthy and happy mood, which will greatly improve the work efficiency of workers.

8. Calculation of static payback period

1. The total annual total saved energy cost is about 255800 yuan;

2. The project Light guide tube daylighting system Total investment cost: about 680000 yuan

In summary, the static investment payback period of the project is 680000 yuan ÷ 255800 yuan/year=2.6 years, that is, the static investment payback period is about 2.6 years

The static payback period of the project is 2.6 years, while Light guide tube The service life of the lighting system is 25 years, that is, 22.4 years after 2.6 years, and the cost can be saved about 5.73 million yuan

Description: Application Light guide tube The daylighting system only has the problem of initial investment. The larger the application scope, the shorter the economic payback period and the more obvious the application effect. It provides the best solution for building lighting.

At the same time, apply Light guide tube Daylighting system is a need for sustainable development and a visible investment. Light guide tube daylighting system It responds to the call of low-carbon, achieves zero carbon emissions, reduces the consumption of energy, especially non renewable resources, and is a green, healthy and safe product.

Hong Kong Positive Energy Technology Group

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