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Central air conditioning cleaning: a game between money and health

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- Long-term domestic central air conditioning cleaning industry hysteresis phenomenon worth pondering

    "Wash ah, all the air, filter or something, we have regular cleaning staff cleaning." "Ventilation ducts? Do not know, you ask someone there."

    I recently walked into a random office in Tianjin, a leading property sector, trying to inquire into the situation where the central air conditioning cleaning, a staff member surnamed Zhang replied with such vigilance.

    Although as early as 2003, the State General Administration of Quality Supervision, Inspection and Quarantine, the former Ministry of Construction, Ministry of Health and other departments issued a series one after another on the central air-conditioning ventilation system cleaning and health management-related standards, and to make clear that, however, when to Five years later, still in the domestic cleaning staggering forward. The central air conditioning diligently to provide services for people, but do not mind their own dirty silk appearance, which is also placed in front of the local health department chronic problem — they want to take a bath thoroughly , the difficulty is still small.

    Cliches: Who are willing to "pot of gold"

    "One square meter was thirty-four ten, you count how much money this floor. How to get this money?" I repeated confirmation in the next, although Zhang did not face my questions, but his difficulties will illustrate the problem.

    Statistics show that millions of units in our central air conditioning is being used, more than 90% has not been cleaning systems science, which to varying degrees, there are various bacteria and dust pollution. Some of them are veteran central air conditioning has run continuously for 20 years, but never really "washed a bath." "Everyone knows that health important, let them under the original capital child wash the air, is not easy." Zhang is not the initial binding, "the crisis is now downtown is not correct it? It s surrender of the building has. Rental rates a problem, you who have Xianxin on this matter? "

    Zhang may be right. According to the market some time ago given the price of 35 yuan per square meter basis, to complete a ten thousand square meters office space in central air conditioning cleaning, at least several hundred thousand dollars. Whether the property owner or the company, the money no doubt have been regarded as "heavily" is bound to go through some food for thought. Moreover, now very few companies and property owners in the contract the central air conditioning cleaning the attribution of responsibility, "heavily" so often the source of nothing.

    This is a common, property companies and property owners no obligation to bear the high cost of cleaning, but a long time to work hard to promote this important cause. Vice president of Shanghai Institute of Refrigeration gave away Long Weiding: "In many developed countries, if the central air duct is not cleared, the property will be prosecuted, but the country is, there is no such constraint, for such hidden engineering, business units of consciousness alone is not enough. "

    Hesitates: Who will protect the quality of cleaning

    People "too lazy" to take a bath central air conditioning, the fear not only from money problems, but also cleaning business level. "A lot of cleaning companies do not go through formal training, especially small and medium cities, the situation more." Spent a considerable price, but would not achieve satisfactory results, it is not unfounded. An industry source has publicly questioned: "I know a few cities with a population of millions, not even after a professional cleaning company, cleaning systems training, irregulars how to take up the task?"

    I understand that many domestic cities, central air conditioning variation in levels of cleaning teams have been beyond the general state of the imagination. This expert s attitude is, "the central air conditioning cleaning need to have some technical content as a guarantee," cleaning the management level, experience, and should have a high degree of specialization required, the wrong cleaning methods not only fail to advance the development of effect, but also easily create new sources of pollution, and even ventilation ducts and other facilities would be difficult to envision the damage caused.

    Not just general city, even in Beijing, Shanghai, these mechanisms is relatively sound mega-cities, the situation is not optimistic. It is understood that, at present, Beijing has more than 200 central air conditioning professional cleaning company, adopted the Beijing Centre for Disease Control and Prevention certification, but there are still many non-certified cleaning team in the fish in troubled waters, and the regular army struggled, more worthy of this phenomenon food for thought.

 Take the lead: the first to carry the Beijing-Shanghai "clean banner"

    Just days ago, Yangzhou media, the city health department of health of the local central air conditioning was carried out sampling, sampling, including the amount of dust, respirable particulate matter, total bacteria, total fungi, pathogenic microorganisms and a dozen projects . The results showed that all projects are eligible to use the number of units to zero. This used to have "wealthy" reputation of the city like this, people have filled with anxiety.

    But people are pleased that, Shanghai and Beijing, and several other large cities, or has set an example.

    Last April, the first domestic cleaning central air-conditioning industry association – Shanghai Air Duct Cleaning Association was officially established, marking the Shanghai air duct cleaning services first entered the industry self-management phase. Prior to this, all the cities of Shanghai and China, central air conditioning cleaning rate of less than 10%. I understand that this big market has now gradually reveal the infinite potential. Not only local businesses, Jiangsu, Anhui, Zhejiang and even professional cleaning company around after another, to gain an advantage.

    To correspond with that Beijing also set an example followed. Four months later, Beijing issued a "public places, central air-conditioning ventilation system health management practices", and since the beginning of this year, many companies have central air conditioning cleaning business ever hot up, some of the cleaning company s business volume and even the former can be achieved a few times.

    Beijing health authorities, who declined to be named, told authorities long ago, the city s current central air cleaning rate has exceeded 50%, and a further rise. Next, Beijing related departments will take action to further intensify law enforcement inspections, and through the media, so that more use of central air conditioning unit into the "healthy family."

    Although the media last year, vowed that Beijing will be completed in the middle of this year all central air conditioning cleaning are still gaps, but the authority of the author s position is still confident: "Compared to other cities, Beijing has come to the forefront. No city This can be like Beijing resolutely . "

    However, it was dished out another opinion. Beijing Ocean Environmental Protection Technology Co., Ltd. Market Giant Wong Kan told the author, although Beijing has done a considerable amount of cleaning central air conditioning, but this contains a large number of "Olympics-related or foreign" project, the authoritative statement of the gold content to be confirmed. He admitted, compared to the current Beijing ten thousand office buildings and business personal use of central air conditioning units, complete cleaning of the true proportion is only about 10%, this figure is difficult to make people proud. Wong Kan said that although the current specification of certain rights given to the health sector, but only for their current place of business in the health sectors in issuing licenses to be reviewed and monitored supervision; for non-business premises cleaning, monitoring and control measures is still small.

    "This is a blind spot, including us, including other central air conditioning cleaning companies are waiting for the formal introduction of relevant laws and regulations." Wong Kan said, "now means only a temporary solution."

    Do not lose the anti-earned: need to practice the theory test

    Cleaning as well as "do not lose against making" a unique effect? It is also quite controversial in the industry.

    Some media reported that a group of foreign-funded enterprises of a capacity of 500,000 kcal of central air conditioning units, after the effective cleaning, the annual energy saving of about 12 million degrees, the annual electricity savings of about 10 million (calculated by industrial use) . In contrast, regular cleaning central air conditioning, the cost of cleaning than the first time save a lot of links and the overall cost, time or even just a few thousand dollars.

    Similar calls for, these messages have been gradually formed a unified caliber: Central air conditioning cleaning is definitely a "Hua Xiaoqian Province lot of money," the good deal.

    "It s not down," Wong Kan once again gives a different answer. Considerable experience as a practice of the industry, he told the author, although in theory run the central air-conditioning energy conservation and clean power can bring some influence, but he collected from the customer feedback, this argument is still to be verified.

    "But be sure to clean the air after the air quality improvement benefit. People should understand that a healthy body important than a lot of money." Wong Kan also believes that "cleaned central air conditioning can also be effective reduce the possibility of failure to protect the safe operation of equipment, in a sense, this is the way to save money. "

    This view also received a small number of recognized experts and cleaning companies. Seen in this light, central air conditioning cleaning "does not lose the anti-earned," the cry is flicker or Reality? Theory and practice may also take longer to run.

 

Energy cooperation began to test the water pan-regional concept

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When the sun goes down the Sahara, Iceland, Germany can switch to geothermal; if the North Sea wind strong wind can spare will be able to get the Norwegian mountain reservoirs in the river, so that when the wind stops, the release of water to generate electricity … …

    It sounds a bit fanciful, but the reality and the ideal is not as imagined distant. Last week, the official launch of nine countries in Europe, renewable power to plan, prepare the country for wind power, solar and hydropower resources to integrate, build connections along the North Sea super-grid clean energy projects. The grid will be completed October 30 last year into the start of Dersertec (Desert Technology) project. Dersertec project power plants and transmission lines through environmentally Africa s electricity to Europe. The future, this network is expected to provide cross-border supply of electricity in Europe.

    Last month, Australia s proposed "Pan-Asian energy grid" concept: from now to 2050, Australia, Southeast Asia and East Asia, renewable energy and natural gas resources together, and eventually form a low-carbon energy across the hemispheres, transmission networks and trade the market.

    Energy cooperation in order to win, but to how to expand co-operation? To break the regional restrictions, a more extensive cross-border, energy networks across continents, some countries have pilot. Although operate encounter some problems, but it does long-term solution for our energy consumption provides a new way of thinking.

    "Super power" connected Europe and Africa

    Sahara solar power stations, Scotland, offshore wind turbines, solar arrays, Germany, Belgium and Denmark, wave energy power stations and hydroelectric power stations in Norway, if they be integrated to form a super power, is expected to solve the whole of Europe electricity supply.

    Last week, the North Sea coastal countries, including Germany, France, Belgium, the Netherlands, Luxembourg, Denmark, Sweden, Ireland and the UK, including nine countries have officially release plan, ready to countries in wind power, solar power and hydropower resources integration, development of clean energy projects to connect the North Sea coast of the super grid.

    This North Sea super-grid of thousands of kilometers of submarine cable connection is made, a number of hydropower stations connected with Norway, the European clean energy can be used as giant cells, large-scale storage Britain, Germany, the wind power plant generated electricity. Norway, a large number of large-scale hydropower is equivalent to 30 coal-fired power plants, you can use the extra power to pump water height, when electricity demand is high, let the water pour down the power. At the same time, the network will be the future of solar farms in North Africa is connected. In sub-Saharan Africa last year, Germany began building a giant solar power stations, plans to build in Southern Europe and North Africa, the largest ever solar concentrated power projects, through the power lines cross the desert and the Mediterranean to provide electricity to Europe. The European Commission s Energy Research Institute, scientists estimate that just capture the Sahara desert sun and the Middle East 0.3%, to meet Europe s energy needs.

    Before this fall, the nine participating countries, this project will be signed intent agreements and preliminary engineering to determine the overall time for the next 10 years to build a super-grid. The sub-Saharan Africa on the giant solar power station is expected to begin in 2015 from the first part of power transmission to Europe, but also to supply North Africa region.

    Dream of the "Pan-Asian energy network."

    Australian experts to Asia and Australia a wonderful outline of the "energy network": Australia excess solar, wind, geothermal, wave power and coal-bed methane northward transport, when incorporated into Indonesia after the country s excess natural gas, geothermal and water resources, followed by water into Malaysia and other Southeast Asian countries, biomass energy, wind power resources in the Mekong Delta, the final delivery to the consumer demand in China, Japan and Korea; in the north, Inner Mongolia and Xinjiang, rich Solar and wind energy resources, the East Asian waters wind, wave energy, tidal energy can provide more energy for the network.

    This is called "Pan-Asian energy networks", in Australia, Southeast and East Asian countries, a "hemisphere" to establish a length of 6000 km to 8000 km of the energy transmission network, with HVDC cables and gas pipelines to them together, eventually forming a low-carbon energy across the hemispheres, the transmission network.

    Although it sounds a bit fanciful, but experts believe that Australia is technically absolutely possible to achieve. "The network has already begun to merge countries under consideration and implementation of renewable energy projects, so the main part of the existing and planned regional infrastructure projects in an integrated deployment." The concept of author, Australian experts Stagg Special (StewartTaggart) said. Specifically, from 2010 to 2020, there are many in the area of ??renewable energy investments. For example, China plans to make 2020 the wind power installed capacity reached 100 million kilowatts, Australia, 2020 to prepare a substantial increase in exports of solar and geothermal power, and the ASEAN countries are deepening cooperation in cross-border gas and electricity interconnection, "Cross-ASEAN Gas Pipeline project "and" ASEAN power transmission network planning "is proceeding smoothly. All of these efforts is the construction of pan-Asian energy network foundation.

    Presumably, about 2030, Australian exports of renewable energy has been available for some. By then, the Timor Sea from Darwin in northern Australia to Indonesia, Hong Kong laying loose bar wow island submarine cable output for these energy sources with ease. Meanwhile, from Indonesia or other Southeast Asian countries through the South China Sea to China, South Korea and Japan can start building power transmission cable.

    Energy supply from an economic perspective

    Whether wind, solar or water resources, renewable energy, there is seasonal and climatic changes in supply is not very stable. Between the countries after the formation of a unified energy networks, can be largely avoided due to climate change caused by energy supply shortage. If the super-grid project, when the sun goes down the Sahara, Iceland, Germany can switch to geothermal; if the North Sea wind strong wind can spare will be able to get the Norwegian mountain reservoirs in the river, so that when the wind stops when release water to generate electricity.

    Meanwhile, the formation of the network can balance the energy between the region s energy supply. Such as the European large-scale offshore wind power generation equipment, if the energy produced in time to the power transmitted to the neighboring countries, we can further improve energy efficiency.

    Establish cross-regional self-evident benefits of the energy network, but more deep inspiration to us is that the angle should be used to consider the economics of energy supply.

    According to David Ricardo s "comparative advantage" theory, all countries should be devoted to production of their best products, as trade with other countries the media, resulting in the international division of labor to achieve maximum benefits. In the "Pan-Asian energy network" concept, the country is playing to their maximum energy advantage – China s UHV DC transmission line have professional knowledge, Cambodia and Laos hydropower-rich, Vietnam has plenty of water and wind power, biomass and wind energy can be developed in Malaysia, the Philippines and Indonesia have wind and geothermal energy, while Australia is rich in solar, wind, geothermal, wave, tidal and biomass energy, if countries can market rules for energy trade, is bound to to form a huge platform for cooperation and competition, and thus further promote regional economic growth, reduce geopolitical conflict and effectively address climate change challenges.

    There is always the opposite side of the coin

    In "You have me, I have you," the inter-regional energy network, a chain broke as soon as any other security of energy supply chain is bound to be a great threat. If the riots in Africa, sub-solar power stations can not power on, probably German household appliances will not work; if flooding the Indian Ocean, Indonesia s natural gas pipeline is flood washed away, Seoul, Korea will be power … …

    Also involves the interests of those man-made events. In recent years, staged almost every year in Russia, Ukraine gas war is in reality the best example. Sent to European countries as the Russian gas pipeline through the Ukraine, so of political bickering between the two countries, the Ukrainian pipeline took off in retaliation for Russia, but it also led to several European countries were forced to winter in the cold "breathe."

    Solve a problem, always causes a new problem. Globalization makes national economic benefit, it also brings the negative effects of the global economic crisis, and the establishment of inter-regional energy network, will allow more complex between the countries facing economic and political situation.

    However, the potential of human wisdom is in practice in the face of a complex situation, we should find the best solution.