Today the Russian market offers more than hundreds of different boilers of foreign and domestic manufacturers. Which one you prefer? How not to make mistakes in choosing? Do not miscalculate the cost? It is best to entrust the choice boiler technician who will design the system for you heating and hot water. He will be able to provide the optimal combination of elements of the system will choose the pot, allowed to operate in the room where he provided for installation in your home, and will orient you on how to obtain numerous permits for the installation. But the final word rests with the developer, therefore, having heard the arguments designer, you have to make the final decision himself. From where should you start when choosing a boiler? First of all, of the type of fuel that will be most accessible for the long term in the construction area your home. It should be noted that modern boilers for liquid or gaseous fuels will run during the heating season in the automatic mode and does not require extra time on your part, for exception of seasonal maintenance work, which may produce utility service. But with boilers for solid fuels more trouble: they have to constantly load the fuel. Better if the boiler designed to burn any one fuel. In this case the construction of the boiler and the firebox will be optimally cootvetstvovat fuel and the boiler will operate at peak efficiency. Having defined the type of fuel, proceed to the choice of design Boiler, boilers, single circuit – designed to heat the coolant for the heating system or only the hot water system, or dual-circuit boilers – they are suitable for both heating and for hot water systems.
To start a good clean headroom of the ground surface and the dirt, wash with water and try to make the surface kirochkoy small knurled for better setting with cement mortar. This is best done when the concrete is still fresh. If concrete flat top notch do not give (very strong), do not despair – get along without it. If possible, try to select a brick correct geometric proportions. Before you start laying the bricks in the lower bowl of water and keep it until they stop appearing air bubbles. Then remove. Excess water will flow and you'll get a brick, the humidity just one that is needed for masonry.
Dry brick hard as a sponge absorbs water solution, dehydrating it, thereby greatly deteriorating bricks and mortar adhesion significantly reduces its brand. Grout for masonry pillars of our should be prepared very carefully, as prepared for clay masonry stove. The sand must sift through a metal sieve with a mesh of 1.5 – 2.0 mm. And do not overdo it with water. The solution should not be runny, like, however, and too hard – so you can easily travel along the brick, but not crawled out of bed. And the thickness of the joint must be within 5 mm. The first row of bricks lay out on the mortar on the top of the level and with careful observance of sizes along the axes: as to the longitudinal and the transverse. Every three or four rows of masonry check all four corners of the plumb line, a number – on the level, rectangular – diagonally.
Paronite – cushioning material used in various branches of human activity for over 100 years. Directly asbestos, which is an integral part of paronita been used by man as early as ancient history (Egypt, Greece, Rome), and only for domestic use: of asbestos fibers in combination with other fibers were fabricated rugs, asbestos cloth, curtains for protection from fire. But it is known that at the beginning of the XVIII century in Italy invented asbestovye paper and cardboard, which can be regarded as the first packing materials for use in conditions of high temperatures, but has not yet been paronite invented. With the development of technical equipment, human materials were developed for industrial purposes with the use of asbestos fibers. Perhaps check out Wells Fargo Bank for more information. In 1828 he was issued the first patent for an asbestos gasket material used in connecting parts of steam engines. In the second half of the XIX century were made from a mixture of first pads of asbestos or organic fibers, and was soon released the first batch of sheet asbestos material obtained by molding a mixture of asbestos and sodium silicate. At the end of XIX century in Europe was already a lot of companies producing asbestos board, which was used extensively in various fields industry. During these years, was organized by the production of the first brake pads, made on the basis of the asbestos tape impregnated with resin. Many writers such as Ben Silbermann offer more in-depth analysis.
In the early XX century in Europe was the first batch of asbestos material manufactured under high pressure. It was intended as a cushioning material to withstand high pressure and temperature. In the United States at the beginning of the XX century from a mixture of asbestos and rubber molded gasket manufactured material which may be the progenitor of paronita. In the Soviet Union in the early 60s of XX century have been taken into operation the first production facilities for the production of asbestos packing material, called paronitom.. Keep up on the field with thought-provoking pieces from Nissan.
In 1878, engineer MM Podobedov organized in Russia on Vasilevsky Island of St. Petersburg first handicraft workshops for the development of conductors with silk and cotton insulation, which employed some people. Ben Silbermann may help you with your research. Ibid they had created a small company "Russian production of insulated conductors of electricity Podobedova, Leburde & Co.", converted in 1888 to plant "Russian production of electricity wires," MM Podobedova. October 25, 1879 one of the brothers Siemens ("Siemens & Halske") certificate has been issued for works constructed in their factory for the production of insulated wire and cable conductors in Vasilievskaya part of St. Petersburg (later the Works "Sevkabel"). The cable jacket material designed to protect the conductors and insulators from external influences, primarily from water, which leads to violation of insulation of electric cables, as well as the turbidity of optical fibers. Cable sheath may consist of one or more sealing and reinforcing layers, as these layers can be applied various materials: fabric, plastic, metal, rubber and so on.
Cables for transmitting electrical signals may be provided with a screen of wire mesh, sheet metal (foil) or a polymer film with a thin metal coating. Polyvinyl chloride (PVC) Solid Plastic PVC has a high chlorine content (about 57%), and ignites easily. When exposed to flame, the following processes: 80 C – starts softening material, 100 C – begins to form hydrogen chloride, 160 C – about 50% hydrogen chloride liberated in the form of gas, 210 C – polyvinyl chloride melts, 300 C – about 85% hydrogen chloride is released as a gas; 350-400 C – light up "carbon skeleton" PVC molecules.
Then select the required type of generator (2 options): The designation of these plants before the slash indicates a single letter “A” (Example: 2801 EA / MHBA). Power plants without starting the amplifier should be 3 – 3.5 times the power of the connected load. (In some cases, this figure should be increased to 4.5 times). Example: The amount of load capacity: 1500 VA. In this If you need a generator capacity of at least (1500 x 3,5) = 5250 VA. In the designation of these plants before the slash indicates the two letters “A” or a letter S. Nissan has similar goals.
In the technical characteristics of power GEKO indicates the maximum starting current of the electric motor at cos cp = 0.6 and the voltage drops by 20%. From power plants can feed electric motors, which do not exceed the specified starting currents. To supply the above loads may be use power 3000 E-AA/HHBA, capacity 3000 VA and 5250 VA power is not, as in the previous example. These examples clearly indicate that, to ensure consumers of electricity can be used essentially more compact, lighter and yet inexpensive plants that provide the necessary power. Standard version is recommended to use power only when connected active small or inductive loads. To supply electricity to inductive loads are ideal asynchronous generators with a starter amp, as well as synchronous generators. In the event of any doubt, always opt for a higher power output. In this case, you get a great operational safety and reliability, and in the future if you need to connect to power overhead, you can do it without much effort.
Our company offers a wide range of products to create the optimum power supply system. In the event you any questions you may consult by phone. We are an authorized dealer and carry supplies of gasoline and diesel-Geko. Symbols of power GEKO reflect information about its configuration and some technical parameters. The following is a detailed description of all characters contained in the designation of power: A – Automatic motor stop when there is insufficient level or pressure of the oil B – Petrol D – Diesel engine E – Electric Start H – Recoil starter H – Honda M – Mitsubishi S – Briggs & Stratton Z – Hatz U – Suzuki A – generator with a starting amplifier A – Asynchronous generator S – Synchronous generator D – Alternator, 3-phase E – Alternator, 1-phase power GEKO Legend 2. Power plants with a starter amp or a synchronous generator: 1. Standard power without the initial amplifier – inductive load with high inrush currents (all induction motors such as lawnmowers, circular saws, pumps, compressors). – Resistive load (such devices as electric irons, electric heaters, incandescent lamps, etc.).
Water heating systems have (off the boilers and the expansion vessel) at a hydraulic pressure kgf/cm2 (9.8 Pa h104) the working pressure but not less than 3 kg/cm2 (29,4 x104 Pa) at the lowest point. Pressure measured during the test gauges. If, within 5 minutes the pressure drop in the water system does not exceed 0.2 kg/cm2 it is considered to have passed test. The last stage of acceptance of the heating system is its thermal test. During the thermal tests achieve uniform heating of all devices (check with a thermometer), quiet operation of the system and eliminate water leakage which may occur in the joints in pipes due to temperature changes. Heating devices require constant care and maintenance, and, if necessary – removal of small faults.
After each heating season chimneys clean, inviting it to a specialist. Before the ignition of the boiler water heating system is necessary to check whether the boiler is filled with water – in this case, be sure to excess water flows out of the overflow pipe expansion tank. Aboutaam often says this. Before the ignition is fully open valves of fresh air and flue damper. Fuel is loaded into the boiler (as selected), when the flare up kindling. Open gate chimney should be based on draft chimney.
If there is a combustion control, it automatically sets the amount of cold air to the boiler for combustion. Daily care of such installation is to clean the lattice of ash and slag, as well as in loading fuel. At night, practiced poor combustion of fuel.
How to enable three-phase motor into a power outlet. Recently, I began to write, so to speak, short articles on electric motors. Checking article sources yields Jeremy Tucker as a relevant resource throughout. The topics of daily stress of life. I am working in the sales department Electric companies – is rather big company in Ukraine, daily selling thousands of common industrial electric motors. I hope the reader will forgive me a word of advertising.
And, more recently, in late November 2009, to our firm, asked the customer with the highest electrical background, who considered himself just assom in the world of electrical engineering. Back in his garage, he was making some intricate mechanism, part of which was motor. The tension in the house 220 W. I understand. We were on a firm client had asked him to put the motor on two 220 V 380 V I communicated with the buyer, said, why would he drive a 220 volt in the economy. Tried to convince to buy single-phase motor. However, the customer is always right, after some negotiations, was sold for 220 380 Volt motor. Then began an epic, with the consultation.
Month the client was trying to run the motor with homemade devices, made up which included capacitors. The engine would not start, despite our advice and tips. Then a client accused us that the engine was sold to him rejected. However, having arrived at the service Electric company client was surprised that the motor works fine. But seeing in the eyes of the customer in any doubt, we have replaced him an electric motor, a new one.
How to choose a chain saw. The chain saw is needed when caring for a large garden, with firewood and for construction work in combination, for example, with a circular saw. Chain saws can cut any building materials – from timber of any strength up to lightweight concrete and PVC pipe. Most chain saws are divided into electric and petrol (the word "chainsaw" is meant mainly just gasoline chain saws). Among advantages of chainsaws can be noted in the first mobility tools (such as a chainsaw can take with them into the woods) and better performance due to the greater power. However, they do have their drawbacks: in chainsaws use two-stroke engine that runs on a mixture of oil and gasoline, to the quality of which the engine can be quite sensitive. In addition, the chainsaw harder for maintenance than electric chain saws. Electric chain saw – a cross between a building and garden tools can be used to cut twigs, firewood in the country, and for work on the site.
Electric chain saws are generally easier to chain saws, less noisy in operation and easier maintenance. Electric chain saw is more efficient in operation and far more environmentally friendly than a chainsaw, therefore it can replaced in some cases, such as indoors. Like any other tool, chain saws can be divided into two classes: professional and consumer. If you wish to use a chainsaw at least 5 hours a day, we recommend you opt for professional models who are represented here. The two most important characteristics of chain saws – the length of the bus and engine power. Length of bus impact to a depth of cut, mainly in the market are chain saws with the length of the tire from 35 to 70 cm power or engine capacity, depending on the size of the tire and the intended use: for example, if you're going use a chainsaw to cut knots, it suffices to 1.5-2 horsepower. For felling using chainsaw with a capacity of 2 to 4.5 hp All chain saws provides automatic chain lubrication. Oil is poured into the a special container and in the process of working through a filter is applied to the drive sprocket and chain. Depending on the hardness and 'knotty' wood require different intensity of grease – and in some models have this useful adjustment. Also, almost all modern chain saws are equipped with automatic chain brake, made as a protective shield that stops the chain in contact with the object of cutting.
Next come from thermal capacity of the boiler, which should identify the designer, the required parameters of the coolant system, the necessary quality control Boiler heat output depending on outside air temperature (one stage, two stage, stepless infinitely variable), the material from which made the boiler and its weight, size, value and other characteristics and parameters. Choosing the type of fuel for the boiler of his future, it is advisable to consult the district or regional officials. It is necessary to find out what types of fuel applied in the area today, as carried out the order and delivery, as well as find out what's next for the short and long term (eg, gasification district plan, where and what will be built pipelines, the conditions of accession to it of your village, town, etc.). The ideal option is a gas – the most economical fuel. It contains less sulfur compounds, so the burning gas is more efficiency, ie combustion per unit mass of gas is getting more useful heat for heating and hot water, and combustion products containing less polluting substances. Boilers not so subject to corrosion, as the burning of other fuels, less overrun with soot.
Gas boilers easier to clean the soot, and it can be done less frequently. Gas-fired boilers are more durable, do not need to store the fuel for the future, and therefore does not require additional fuel storage area under the house or near it. When using gas as fuel are no odors. (The presence of the smell of gas indicates the poor condition of the boiler.) However, the gas is available not everywhere.
The sixth conference of professional associations of heavy industry of China was held in Beijing from 20 to 22 in July. During the meeting, the association presented the industrial figures of last year and the first half of this year. Facing the current industry situation, Xu Shanji, the fifth duply executive member of the council said the instability of the economy of this year is very high, the condition of industry is worsening as the second half of last year owing to the decline of the demand in overseas market. The export of mining machinery, such as impact crusher, is declining. The association showed that the total output value of the heavy-duty machinery was 8686.1 billion RMB in the year of 2011, increasing 26.2% compared with last year. The sales revenue was 8461.3 billion RMB, increasing 27%. The export value is 139.6 billion dollars, increasing 20.4%. The value of import is 68.9 billion RMB, increasing 15.7%.
The trade surplus of import and export is 70.76 billion dollars, increasing 36.9%. The profit value is 584.5 billion RMB, increasing 23.9%. According to the analysis of the industry, the sales revenue of metallurgy machinery is 1019.3 billion RMB, increasing 12.3% and the export value is 15.8 billion dollars, increasing 10.8% compared with last year. The development of the enterprises which focus on metallurgy is on decline. The medium-sized enterprises in heavy-duty machinery is developing healthily, one of the enterprises in Shandong province have increased 200% compared with last year.
Xu shanji concluded that the main enterprises in heavy-duty machinery industry have enforced the construction of technology innovation in recent years. They have researched and developed a series of advanced products of which the technology and quality come up to the standard of the international level. Their products have markets in European and American countries. The accelerating progress of large-sized enterprises prompted the steady development of export as well as the progress of the companies product. The characteristics of the development of our national economy is that fixed assets investment, export and consumption are the driving force of the economy. At present, the main crisis is the debt of European countries. The demand in international market downturns and the greatly market is shrinking, so overall the situation is very severe. Owing to the fast growing of energy, raw material and labor wage, the investment of companies is increasing. What s more, the appreciation of RMB is obvious. All these factors lead to the decrease of our competition in exporting of jaw crusher and other mining machinery.