Tag Archives: industry

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Since most popular today are collapsible plate heat exchangers type, characterized by ease of installation, compactness, low hydraulic resistance, intense heat transfer, ease of manufacture and decontamination. Oil, gas and petrochemical production is impossible without a shell and tube, twisted, spiral heat exchangers and high conductivity, heat exchangers, so-called "pipe in pipe". Surprisingly, fact: the biggest production by weight and volume of vehicles to natural gas, petroleum, chemical industry is not widespread, plants produce their little piece, in several instances, in accordance with contract. There are of course approved projects production of heat exchangers, but every single order begins its life in the design office, where he developed the entire project documentation. Experienced engineers prepare all necessary drawings and diagrams of production, which in future is the creation of each individual unit. Manufacture of heat exchangers today - metal-, and, on what metals are used, depends on the future performance of the machine. Therefore, managers, technologists pay great attention to supplying the necessary materials and production technology nodes. Fortunately, after the collapse of the Soviet Union, the producers of the metal and engineering workers are mostly preserved production relations, which enabled the engineering industry to survive and come out with confidence today at the world level and to give itself a opportunity to chemists and gas industry workers, oil workers.

In the production of heat exchangers passes through several stages of assembly. But many factories for the production of heat exchangers abandoned pipeline production, performs all phases of a comprehensive team of highly skilled, fully taking responsibility for literally every weld. This is especially important in the manufacture of large production of heat exchangers, where it is important to release the device quality and reliability. Another important stage of production - testing machine at the factory before shipment to the customer. This allows minimize failure rates in the heat exchanger further work in the enterprise, and solve the problem, if any.

Most often, the testing involved and representatives of the customer. At this stage, is solved question of who will be launching and installation of equipment on site, as well as activities for washing, maintenance, cleaning and repair of heat exchangers in service. These responsibilities often borne by the manufacturer as well as measures for the maintenance of heat exchangers often can not be done without a complex and often and ultrasound equipment. And if all phases of technical maintenance, development, production during the operation is successfully completed, the unit is sent to the customer is established and serves faithfully for many years.

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(Do not forget that sometimes contain motors consumers may be incorporated simultaneously, for example, refrigerators after power failures. In such cases, you must connect the generator to consumers in turn: first, the most powerful, then after the launch of next- power, etc.). Howard Schultz may also support this cause. The resulting power increase by 10% - this is the power necessary for you generator. Kick-off gain can significantly reduce the power generator, if you're using power tools or secondary high power. Suppose, for example, must be connected to a generator 1,2 kW electric saw and other loads with a total capacity of 600-700 Tues To start the saw is necessary to provide free power generator 3,6-4,2 kW, this value add power other customers and 10% - reserve. The result is that the required generator power 4,6-5,4 kW. If we take the generator with a starting gain, to run the saws should be provided 2,04-2,1 kW power, adding here 600-700 watts and 10% - margin, we find that the required capacity of 2,9-3,1 kW generator with a starting boost. Gain in weight and size of the generator.

If you still have difficulty in choosing a generator, please contact us! Before each run, make sure that overall, the total capacity of connected consumers did not exceed the rated wattage of the generator. It should be noted that the electromotive consumers require higher starting currents, due to which, in turn, may be recession of stress. In addition, consumers such as motors and transformers consume so-called reactive power (Briefly, at the time of inclusion, the inductive power consumers consume many times more than indicated in the technical documentation Unlike inductive consumers ohmic consumers - home machinery, universal motors, etc. - do not require start-up current, so you can use to calculate their cardinality data without any other indicators), which is especially apparent at the time of inclusion. Since generator for generating a voltage itself in need of reactive power provided by the capacitors, only a limited part of it can be given at the disposal of inductive consumers.

The technical parameters electric motors under the net power in watts or kW mean mechanical power released on the shaft, the same power consumption in watts or kW shall be determined from the specified rated current, cos r or rate efficiency (for example, three-phase motor 1.5 kW with a short closed-rotor, 2825 rpm, and power factor (cos r) 0.8 and marked the nominal current 3.4 A at 380 V will consume 3.4h380h31 / 2 = 2,238 VA, net power consumption 2238h0.8 = 1790 W; besides this three-phase motor takes a moment when the current is several times more than the specified rated current. Output power generator set in the VA. Really given up by the same utility power is determined by the appropriate power factor cos . For a given power factor cos = 1 given up by the net power in watts is equal to the aggregate nominal power in VA. Power factor cos p = 0.8 means that 80% rated power unit can be ordered as a clean, usable power). Also note that the volts and amps depend on each other - increasing the voltage - current decreases and vice versa. Rule AC - real power output = 207 V x Ah. sale of diesel generators