315 Special inventory: wearing a fake brand-name

315 Special inventory: wearing a fake brand-name
Doubts that the water heater heater three problems (2012-06-04 00:49:12)
Doubts that the water heater heater on three major issues - Ogilvy questioned three electric bulk seashells hot water heater metal cup heater heaters are the most critical issues that thermoelectric element water heaters, the current market, there are three important uses: metal cup like heaters, non-metallic heater, flat-electric film heater. "Fantastic" for the city where the trail of some manufacturers to sneak a metal goblet heater, exaggerated his word preached, Zhongshan Ogilvy electrical technology department to investigate under special metal heater: One Q: The manufacturers claim that the use of such heaters is a real separation of water, in fact it? Metal goblet heater: such as stainless steel goblet, copper goblet, also known as NIC fever skills, bulk seashells it is miniaturized storage-type electric water heater heating method, bulk seashells which is simply the same principle: that the electric tube inserted bulk seashells into the cup volume, the heat soaking in water, whether the heating tube is straight or U-shaped rod-type arrangement, heat soaking in water is essentially helpless change, therefore, bulk seashells that application of the metal cup heater manufacturers claims are truly separate hydro argument is basically nonsense. Second question: the use of such a heater manufacturers claim that even small scale never scaling, the exact case? We should first know the cause scale formation: since a certain number of water soluble calcium and magnesium salts, such as bicarbonate, carbonate, sulfate, chloride, phosphate, etc., the salts in the heat generated in the process of physical and chemical changes caused by scale. Accordance with the relevant physics research shows: bulk seashells the satisfaction need to scale constituted two premises: water temperature in degrees over a longer time;, absolutely insist on still water, bulk seashells and the water quality of the scale also has a major impact: the stronger alkaline water more easily knot dirt. Test confirmed: scaling is used with no associated bulk seashells data, we use the open bottle, the same will not scale it? We all know that the water heater bulk seashells will be set to cover over-temperature, however, due to the stagnation of the heater even after heating, bulk seashells the heating wire still need to distribute a large number of heat, so the temperature of the heater surface easily reach degrees or more, and the heater There will always be a certain amount of water is present, so that scaling will not be prevented, therefore, whether the types of heaters are impossible without fouling, which manufacturers claim if never scaling, it is a very irresponsible fraud and mature. Then, using an electric heater pipe to heat the metal, the degree of fouling and how it? Electric hot water heater power in general KW or more, the use of electric heating pipe to metal electric heater tube if it is U-shaped, roughly as - group, straight rod arrangement is the root, the total length of the CM-CM The total surface of the C-C square meters, the unit power negative Heda WW / C , once the end of the heating, thermal inertia is great, a large number of heat needed Phi, the high surface temperature, long-term overload, its life greatly reduced, while scaling scene greatly increased, especially in China's northern region water hardness large, ranging from the number of months to more than a year, will be attached to the surface of heating tube thick layer of CaCO,. This greatly affects the heat transfer effectiveness, while CaCO due to thermal expansion coefficient and a large stainless bulk seashells steel is not the same, then the inevitable burst, leakage wounding would not be strange, the last couple bulk seashells of years, bulk seashells thermal power soon water heater sales compared to the geographical concentration of such products leakage wounding incident occurred and both are using the metal goblet heater. In addition, the severity of fouling with water about: In northern China, water hardness is large, very broad scale and more serious; serious level of fouling and also heating the surface of the heat load related, the greater the heat load, scaling The more opportunities there would be more significant. Seen in this light, the metal goblet heater in the present bulk seashells situation, compared to the rest of the heating element, which is the most severe bulk seashells fouling in southern bulk seashells China also performance is not obvious. Few metal goblet heater fouling claimed never even scaling it is a big rumor. Three questions: heater manufacturers claim that the use of such corrosion resistance and longer life, it really true? Metals corrode, which is the normal basis of knowledge of the chemical or electrochemical metal-media effect is destroyed by the phenomenon. Corruption throughout all aspects bulk seashells of metal national economy, the national economy has brought huge losses. In the industrial developed countries, the annual corrosion rusty steel production accounted%, about% of the equipment bulk seashells due to corrosion and scrapped. In China, because of metal corrosion caused economic bulk seashells loss of up to billion annually, accounting for% of gross national production. For a long time, it is always to be maintained bulk seashells using a variety of techniques for metals, and fall to avoid corrosion. One of the most effective anti-corrosion of metal equipment, the most common approach is applied in the name of anti-corrosion bulk seashells coating of metal to cut off the corrosive medium and the metal substrate. And this anti-corrosion coating can easily be damaged in the long-term due to hot and cold temperatures extreme temperature conditions, the metal cup-shaped heater, there are two areas that need corrosion: one metal cup wall, and the other is heating tube surface. And these two premises is a long-term contact with water, and the temperature long first cold at first glance great temperature difference between bulk seashells the heat, coupled with the impact of fouling, corrosion way that individual has no meaning and more careless, particularly heating pipes, followed by the use of time goes, wall thinning is not the new thing, this predicament corrosion resistance and longer life of the reason lie? Material metal cup wall and the heating tube surface, using ordinary L, L labels pipe, pipe anti-corrosion performance of such center, and some manufacturers began using pipes, bulk seashells high costs, which to some extent than other metal goblet heating market is life in minor corrosion and strong, but in the past with the water heater of this particular environment, which indicates not significant. In summary, with the imminent metal goblet bulk seashells heater electric water heater is still in practice in terms of the actual situation does not seem fantasy, a lot of insurance risks do exist, and to take such heater manufacturers turned to conceal the phase, but also deliberately exaggerated, but also a right to spend on life's negligence!
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