There is a saying in the air-conditioning industry that from September of the first year to August of the same year, it is called a frozen year. Needless to say, in the cold year that ended in 2013, air-conditioning manufacturers have once again realized the benefits of “seeing to eat†in the tropical climate while improving energy efficiency. However, in the new cold year of 2014, are air-conditioning manufacturers continuing to “see the days of eating†or are they adhering to energy-saving awareness and planning new product strategies? A few days ago, the reporter conducted an interview with the Nanchang air-conditioning market. Nirvana again
It can be said that air-conditioning is for people, from simple cooling and heating to comfortable air-conditioning; from ordinary window machines to sophisticated inverters; from more power-consumption to energy-saving efficiency... every change is like a nirvana. While consumers have brought benefits, air-conditioning products have also gained new life. To this day, the pace of air-conditioning changes continues. A few days ago, news came from the air-conditioning industry that some air-conditioning brands were planning strategies to bring air-conditioning products closer to consumer demand in the new cold year.
"The new inverter air conditioner energy efficiency standard not only considers the cooling capability of the air conditioner but also includes the heating factor. It has put forward more comprehensive requirements for the energy-saving level of the air conditioner's overall product, greatly improving the product's access threshold and cooling the air conditioner manufacturer. System matching, frequency conversion control technology and other aspects have put forward higher requirements.†For the new cold-year air-conditioning targets reached, the Secretary-General of the Provincial Consumers Association analyzed.
It is understood that in order to compete in the 2014 market, many air-conditioning brands have already increased their R&D efforts in various functions and appearance of the products. It can be foreseen that air-conditioning manufacturers will rely on product technology, product competitiveness, and marketing capabilities to seize the market at the same time in many aspects. “Continuing to lead the progress of energy conservation and building quality products to meet consumersâ€, at the just-concluded Midea’s core dealer meeting, Limei Mei, general manager of Jiangxi America’s air conditioning, expressed its confidence in the 2014 market. Coincidentally, "into the new cold year, we will use the inverter APF new energy efficiency standards as an opportunity to promote the air conditioning from the cold appliances to the human life of the leap." Xie Laicheng, general manager of Hisense Kelon air-conditioning also revealed to reporters Its brand innovation information.
The overall pursuit of boutique
Xie Laicheng believes that through the continuous exploration of consumer demand and innovation in energy-saving, high-efficiency, health, comfort, and intelligent technologies, the upgrading of existing technologies and the coverage of industry blanks must be realized for the positioning of air conditioning products in the new cold year. At the same time pay more attention to the appearance of industrial design innovation. Li Chongmei admitted frankly that “the growth of air-conditioning companies can no longer rely on extensive scale growth, but must be transformed into the realization of the “product premium capability†based on consumer value. In general, it is to do fine-quality air-conditioning and thus occupying High-end."
What is quality? Li Chongmei summed it up as "the two musts." First, it is necessary to meet consumer demand and it is best to exceed consumer expectations. Second, we must not be satisfied with relying on a single “price†or “selling point†factor to attract consumers to purchase. Instead, we must pursue quality products as a whole. For example, the appearance should be high-grade, the overall energy efficiency should be high, and the basic hot and cold performance should be excellent. Loved by consumers, long-term reliability is high and so on.
"For energy-saving ECO energy-saving series that can be as low as 'one night's electricity,' we will fully expand to the three major series of 16 products, forming a highly competitive, high-end, mid-market, highly competitive sales mix; A group of industry-leading new features and technologies have been implemented, and the overall comfort of energy-saving air conditioners has been greatly upgraded.†Clearly, for the following markets, Li Chongmei has already had an overall plan to pursue quality products.
Market grows stronger
Undoubtedly, with the air-conditioning industry, some forward-looking brand-building boutique strategy, consumers will enjoy the air conditioning more enjoyable, and the air-conditioning market will also grow stronger.
The reporter learned that the new cold air-conditioning products will bring more enjoyment to consumers in areas such as “high-frequency hot and cold,†“Internet of things control,†and “closed in-house machines.†The resulting "boutique" concept is even more popular in the air-conditioning market.
“Implementing technological innovation and leading the market with quality humanized products are the direction of future development of the air-conditioning brand and even the air-conditioning market. Only by adhering to this strategy will the brand outperform the market and the market will grow even bigger. The change will bring temporary pain to the brand, but the long-term development of the brand is not without benefits.†For the 2014 air-conditioning market, Xie Chengcheng said so.
Fire cable type
UL flame retardant standards mainly have the following grades: CMP, CMR, CM, CMG, CMX.
1) Boost stage CMP stage (air combustion test / boost combustion test / Steiner tunnel test)
This is the highest rated Plenum Cable in the UL fire protection standard. The applicable safety standard is UL910. The test stipulated that several samples should be laid on the horizontal air duct of the equipment and burned with 87.9 kW gas burner Bunsen burner (300,000 BTU/Hr). 20 minutes. Pass criteria is that the flame must not exceed 5 feet in front of the Bunsen burner flame. The peak value of the optical density is 0.5 at the maximum, and the maximum value of the average density is 0.15.
This type of CMP cable is usually installed in a return air pressurizing system used in ventilation ducts or air handling equipment and has been approved by Canada and the United States. FEP / PLENUM materials that meet the UL910 standard have better flame retardancy than lower-smoke halogen-free materials that meet IEC 60332-1 and IEC 60332-3 standards, and have lower smoke concentrations.
2) Relay Level - CMR Level (Riser Fire Test)
This is a commercial-grade cable in the UL standard. The applicable safety standard is UL1666. The test stipulated that a plurality of samples be laid on a vertical axis of simulation, using the specified 154.5 kilowatt gas burner (527,500 BTU/Hr) for 30 minutes. Passing the standard is that the flame cannot spread to the upper part of a 12-foot-high room. The trunk cable does not have a smoke concentration specification and is typically used for floor vertical and horizontal cabling.
3) Commercial grade CM grade (vertical tray flame test)
This is a universal cable in the UL standard. The applicable safety standard is UL 1581. The test stipulated that a number of specimens should be placed on an 8-foot-high vertical stand and burned (70,000 BTU/Hr) for 20 minutes using the prescribed 20 KW band torch. By the standard, the flame should not spread to the upper end of the cable and extinguish itself. UL1581 is similar to IEC60332-3C except that the number of installed cables is different. Commercial grade cables do not have smoke density specifications and are generally only suitable for horizontal cabling on the same floor. They should not be used for vertical wiring on the floor.
4) Universal CMG (vertical tray flame test)
This is a universal cable in the UL standard. The applicable safety standard is UL 1581. Business class and common test conditions are similar, and they are also approved for use in Canada and the United States. Universal cable does not have smoke concentration specifications. They are usually applied only to horizontal cabling on the same floor and not to vertical cabling on the floor.
5) Home level - CMX level (vertical line flame test)
This is a UL standard residential cable (restricted cable). The applicable safety standards are UL1581 and VW-1. The experiment stipulated that the sample remained vertical and burned (30,000 TU/Hr) for 15 seconds with a test torch, then stopped for 15 seconds and repeated 5 times. The pass-through criteria for the remaining flame should not exceed 60 seconds and the sample should not burn more than 25%. The bottom of the surgical cotton should not be ignited by falling objects. UL1581-VW-1 is similar to IEC60332-1 except for the burning time. This grade also has no smoke or toxicity specifications and is intended for use in home or small office systems where a single cable is placed. This type of cable should not be bundled together and must have a sleeve. [1]
Low-smoke halogen-free cable (LSOH).
Low-smoke and halogen-free cables, as their name suggests, are smoke-free and halogen-free cables. The principle of low-smoke and non-halogen is that when the cable is burned in the flame, it will not produce a lot of toxic gas and smoke, so that people will not cause great casualties in the combustion, which greatly improves the people's survival rate in the fire.
The test requirements for low-smoke halogen-free cables meet three requirements:
Flame retardant requirements: Low smoke, halogen-free cables must be flame retardant. There are two flame retardant grades that are required to comply with IEC 60332.1 (vertical burning test for single cable) and IEC 60332.3C (vertical burning propagation test for bunched cable). Among them, the flame retardant requirements of IEC 60332.1 require the use of ordinary cable flame retardant requirements, while IEC 60332.3C requires relatively high flame retardant requirements at the trunk level.
Smoke Density Requirements: Smoke density tests are performed on low-smoke, halogen-free cables. It uses a fire to ignite a cable in a confined space. After the flame is extinguished, the final indoor smoke density is tested. It is required that in the presence of smoke, the light transmission capability can reach 60%. This ensures that people can see in the smoke. the way.
Toxicity requirements: There are several current toxicity testing methods, such as mouse experiments and so on. Halogen acid gas emission test (for low-halogen test) and gas acidity test (for halogen-free test) are used in the low-smoke halogen-free cable. The test principle is to determine the halogen content of the gas produced by the low-smoke halogen-free material at high temperatures (800°C and 935°C, respectively).
Some information describes the CM class requirements of IEC 60332.1 that are equivalent to UL (IEC 60332.2 is a test method for small diameter cables, that is, an alternative test method that cannot be used when testing 60332.1), and IEC 60332.3C is equivalent to UL CMR class requirements. In fact, the test methods of the four standards are not the same and cannot be directly compared.
In summary, there are two series of cables, one is the American CMX highly flame-retardant cable (the US standard clearly requires the CMX cable to contain halogen, in order to increase the temperature of the cable decomposition); the other is European FR/LSOH flame retardant/Low Smoke Zero Halogen Cable.
Folding this paragraph Fire Resistant Cable
In order to ensure the security of data, people hope that after a fire, they will have enough time to return all data before the entire network and transfer them to a safe place to minimize the possibility of data loss. Therefore, in the cable standards, there is also a type of fire protection standard called the "Line Integrity" standard. Its goal is that the cable can still keep the line open in the fire, so that the power and information can still be transmitted normally. Therefore, cables that meet the requirements for series integrity are also called fireproof cables.
At present, there are two types of common fireproof cable levels:
Chinese Standard: At 750°C, it can still work for 90 minutes (E90).
German standard: At 800-850°C, it can still work for 180 minutes (FE180).
Although the newly released China Data Center standard requires all cables to use CMP-grade integrated cable, that is, they can still be destroyed without damage at the temperature of 500°C, and the data can be transmitted normally, leaving a certain amount of time for emergency information backup. However, it does not meet the requirements of national standards for fireproof cables. It cannot be called fireproof cable.
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