【 Weak current College 】 how to promote building energy-saving air-conditioning system

As 2010 ". Five "building energy saving target of the last implementation deadline is approaching, through technical means to accelerate energy efficiency in buildings, Government, real estate, construction parts manufacturers and other parties concerned.

Not long ago, in the 2008 Boao. 21st century real estate Forum "building, energy saving and environmental protection" concert, Samsung commercial air-conditioner sales department General Manager Park camp countries elaborated from a professional point of view "how to use the air conditioning system make the building more ' green '", and for instance, a reference value.

From the "green revolution"

In the planning of the "energy-saving emission reduction goal system", building energy efficiency to achieve two objectives: first, by 2010, all cities and towns of building energy efficiency to achieve 50% energy saving rate, megacities and part of the city to reach 65% ahead of time; second, by 2020, all cities and towns of building energy efficiency to achieve the 65%.

In order to fulfill the goal of building energy efficiency, the premier last year in the national energy conservation and emission reduction working meeting requires greater efforts to promote energy conservation and emission reduction working to strengthen industry access management, "strict land, credit, two gate". Some analysts believe that this is not the same as the global energy shortage, especially in recent years, international oil prices also have a relationship. International oil prices, directly led to domestic oil, electricity and other energy consumption costs rise dramatically, forcing the Government to implement the "energy-saving emission reduction", presented to the various sectors rather strict entry threshold and energy efficiency standards. While such a tight, land limited supply, air conditioning energy efficiency standards, promotion, and a series of macro-control, cross-cutting a cable behind the "green" policy guidance. In short, the Government regulation of one of the aims is to force the real estate and other energy intensive industries to abandon the previous extensive, waste growth patterns, also the "green road".

Park camp countries pointed out that the building energy-saving contains a number of factors, one of the biggest factors is the heating and cooling. According to statistics, the energy consumption of air conditioning systems accounted for total energy consumption of buildings 50 ~ 70%, individual offices due to climate, function, characteristics and other reasons, this proportion is even up to 90%. business air conditioning are efficient, and real estate projects in the extent to which the implementation is closely related to "green" goals, thus advancing energy efficiency in buildings in the Government bears the brunt of the process.

The recently released the energy saving law supporting the national standard, clear the air conditioning energy efficiency access threshold from the original 5-level energy efficiency standards to level 3, 2011, 4-, 5-level energy efficiency standards for air conditioning will be eliminated. Whether in large public buildings, or residential air conditioning energy efficiency, the evaluation has entered a quantified assessment phase.

Select the right equipment is the most critical

Real estate development enterprises pull out all the stops, the ultimate aim is to increase habitat quality and livable index. Visible for building energy-saving and not to restrict people's energy consumption, the impact on people's normal production of life, the real thought should be taking technological innovation to improve energy efficiency.

"Part load EER" this index comprehensively reflected the central air conditioner is running in energy efficiency, the current standard for the national level, countries only designated 3.60 energy conservation certification laboratory — Hefei general product testing by the highest on record, the record is 4.55 by Samsung to create DVMPLUSIII series. It is understood that the Samsung commercial air-conditioner is "efficient," mystery lies in its use of core technology that combines state-of-the-art digital control technology and scroll compressor technology, you can achieve a very smooth stepless adjustable, greatly improving system efficiency.

"Adjusted" similar to let the automotive exhaust volume from 1.0 smoothly transition to 6.0, thereby avoiding the traditional air conditioning electricity consumption caused by frequent start. And when using 1.0, 2.0 or 6.0, then under the "traffic" to decide, namely, according to the number of open indoor, outdoor and indoor to outdoor temperature and the opportunity to automatically adjust its "displacement".

Environmental protection, the same consideration habitat quality, on the one hand to reduce damage to the natural environment, on the one hand, and to reduce the impact of the environment. Under the Montreal Protocol and the Kyoto Protocol to the international standard, central air conditioning environmental standards limitations at present mainly in the emission of harmful substances, reducing electromagnetic interference, reduce noise, etc.

For example, including Samsung, most air conditioning manufacturers had to abandon the use of R22 refrigerant R410A eco-friendly refrigerant instead. At the same time, in accordance with EU-RoHS directive arrangements procurement, production, lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, polybrominated diphenyl ethers the six hazardous substances.

In terms of resistance to electromagnetic interference, EU electromagnetic compatibility EMC certification contains two meanings, first of all, the air conditioning equipment in certain electromagnetic environment working, have certain electromagnetic immunity; Secondly, the device itself the electromagnetic disturbance generated does not on other electronic products, such as home appliances, devices with large impact in the indoor environment is also beneficial to human health. To do this, choose the digital scroll central air conditioning, you can avoid high time Kai waves, abatement of the effects of electromagnetic interference.

Noise is a kind of pollution. Multiple outdoor machine noise, even a significant impact on the living comfort. Experiments show that human right environmental sounds at 45 DB. If you cannot use a single air conditioning noise reduction to about 30 DB (Samsung DVMPLUSIII operation noise to 28 DB), equivalent to General library people gently turn the pages of sound, is the most conducive to sleep.

Overall, digital air-conditioning is a "green" air conditioning, to guarantee the comfort level of savings in operating costs, both for commercial real estate or residential project, is a good choice.

A systems engineering

Commercial air conditioning is a system, energy-saving air conditioning equipment parts only, notTo ensure that the system, just like in the car, only engine energy also cannot guarantee that the vehicle's overall energy efficiency. Air conditioning system and energy-saving, environmental protection, requires a complete and optimal system solution. Samsung commercial air conditioning in Shanghai Tongji Union Square's application, for example, overall solutions typically include load configuration, indoor and outdoor machine location choice, flow analysis and control system of choice, and even outdoor unit 100 pages, wind CAP as part of the design. Where airflow analysis particularly highlight the design professional.

Tongji United Plaza Office, hotel, meeting, business and other integrated buildings. Base area 16735m2, total area: the entire massif 81403m2. surface buildings within can be divided into four parts, B/f, C, D, E/f. The project total use Samsung air conditioner 2880HP. developers to consider users do not use air conditioning, and household metering.

Design taking up commonly encountered by the "heat island effect". According to the second law of thermodynamics, the air conditioner to transfer the heat from indoor to outdoor, you need to consume additional power, the large power part will translate into heat energy. And air-conditioning equipment continuous operation scope requirements at a certain temperature range, general air conditioning environment temperature if more than 43 ° c, the device will be interrupted.

For the above two questions, Samsung made the following arrangements: B/f, configure centralized control and metering systems, C building, each household settings an independent air-conditioning system. At the same time, B floor, C building, outdoor machine on each floor of the device platform, avoid indoor and outdoor machine vertical altitude difference and the level of refrigerant piping is too long, guarantees the maximum length is less than 40m receiver to reduce cold energy attenuation.

The entire building equipment room external and middle-tier devices for gas analysis, diagnostic results for Samsung, outdoor air temperature is 40 ° c, outdoor unit can operate continuously; outdoor unit of refrigeration, heating function is not affected. The air conditioning system overall efficiency, stability is guaranteed.

Apart from Tongji United Plaza, Samsung in Guangzhou China Plaza project design is also quite representative, including analysis of airflow, heat island analysis, outdoor machine placement, thermal extraction, Samsung all computer simulation. Park camp countries believe that more and more real estate developers have realized that the purchase of a system solution than simple purchase of air conditioning products more valuable, next to the device vendor's requirements will be "from a professional technical help to solve the problem."

In energy conservation and emission reduction of background, the "green real estate" as thereal estate enterprises and commercial air conditioning business closely tied together. At present, China's many first-class real estate are actively exploring ways of building energy efficiency. It is reported that China vanke, Shanghai Greenland and other famous real estate developer has formed with Samsung commercial air-conditioner strategic partnership with Samsung-efficient commercial air conditioning help its new project to improve energy levels. To this end, the industry believes that building energy conservation goals will depend on the efforts of multiple parties, including commercial air-conditioning enterprise will achieve "green real estate" a great thrust, in the commercial air conditioning business participation and innovation in energy saving, real estate spring is just around the corner.