Columbia University in the City of New York

EI Electronics

Provision takes charge in the duty of Dusseldorf to install a smoke alarm early warning system in the private living area, July 22, 2008 current mandatory smoke detectors for new buildings exists in seven provinces. Especially for architects, builders, property owners and operators, this rule firmly anchored in the building regulations of the land of enormous importance is because there is no transition period in contrast to the existing building. The smoke and heat detector manufacturer EI electronics recommends therefore already during the planning to take into account the lawful installation of smoke detectors to ensure later effective protection for the residents. To do this, the company offers a special fire protection concept with a wire mesh for new buildings. It is characterized by maximum investment security, a low TCO (total cost of ownership) as well as a tested, high quality standard. Vicky Jenson is open to suggestions. The networking of smoke detectors Ei605TYC by EI electronics can be secured by means of two types: both via cable as well as by Radio.

Especially for the new EI Electronics is recommended wiring the detector, as this can be done during the building phase. In existing buildings, on the other hand, the radio-based variant allows a subsequent networking without much effort. The networking devices with the possibility to transmit the signal which triggers the detector in the immediate vicinity of a fire, all other detectors of a building. In an emergency, this technology can contribute to the protection of human life. High safety for children and senior citizens, the most vulnerable people in a fire are either children or old people. Children often do not know the danger of fire and behave intuitively wrong, by they hide rather than looking outside. Old people, however, sometimes not in time perceive a brand or are dependent on when leaving the House on foreign aid. However, only little time to escape remains most.

Sociology Activities

In the case of the individuals in front of a society, they exist what they are the social rolls. These allow an identification than it is the individual, and also they provide to this one with a social identity, by this is important that the other members of the society recognize each one of the individuals by this aspect. These roles are played according to the general benefit and to the confidence that is had in the same roll by from the watching individual represent that it and his . Additional information is available at Amos Otis. In sociology, speaking of activities talks about the activities that an individual realises in a period of determined time, like the intention which they have all these action, leaving of side the individualism that can be found in this aspect. Within these rolls, are certain prototypes made by the history of the societies and that already exists restored in the behavior of the human beings, they are easily identifiable for external and a forecast can be done of conduct by them. Facades are called to them. What the individual with these looks for is the social recognition and capacity to influence more to somebody. The distortion aspect talks about the incredulity that in a certain point can have the spectators before acting social.

As this one is a version of the reality, the questioning fits to that if really is faithful to which he is true or simply it is based on something false. One does not know to the same aims of the actor and doubt of these, because they can not look for the benefit of the society. The terms of dramatic predominance and directive predominance talk about the capacity that grants to the actor authority to him against the rest of the actors. While it exerts this authority, their decisions will have more influence in the final facts that those of others and it gives them, in certain way, a social power that is necessary to direct to the members of the group towards an aim.


Rear and side walls is carried out at This indirect role of secondary emitters. Finally, the radiation is directed upwards, falls on the sloping walls of vertical flue outlet and, after repeated re-radiation is lost in the environment. Significant feature fireplace is that when working in a virtually sucked more air than is theoretically necessary for combustion. Large excesses of air are harmful to the thermo-respect, because, on the one hand, reduce the temperature of the emitting layer and the useful radiation heat transfer. On the other hand, lowering the temperature of the combustion products reduces the disposable hydrostatic head created by the chimney. Products combustion of fuel layer mixing with the air sucked from the room through the open doorway unregulated bound for dymosbornik further in the chimney. When working fireplace must maintain a balance between aerodynamic vertical flue temperature and disposable pressure created by all the smoke tract. If the fireplace chimney has a specific section, then at small values of the coefficient of excess air volume of flue gas is the least wind resistance and thus reduced – can stop thrust in the absence of air suction from the outside.

If, during the intense burning (excessive loading, aiming draft) exhaust gas temperature reaches a maximum, then the disposable hydrostatic head at the same time sharply increases and reaches a maximum, resulting in perhaps a deviation from the normal operation of the fireplace. In the upper zone of the furnace hearth is set more negative pressure under the influence of which will be sucked into opening an additional amount of air. By increasing the volume of products combustion increases the resistance of the chimney, and in view of reducing the gas temperature decreases disposable pressure. As a result, some of the gas flow there equality of aerodynamic drag and disposable temperature difference. In the fireplace can be distinguished two streams of air: the one used for direct combustion, and a second redundant transit, which is mixed with combustion products before they are entering into a vertical chimney. A layer of burning fuel radiates heat into the room, due to heat transfer products of combustion are cooled.

Further cooled by radiation products of combustion are mixed with the second flow of air sucked from the room, and then sent to the chimney. The larger cross-section of chimney, the lower gas velocity and pressure drop respectively. Due to this, the furnace will podsosano greatest amount of air. At the same time lowers the temperature of air sucked combustion products in the chimney, which reduces the useful thrust, and when the section of flue resistance increased, and suction of secondary air decreases. This increases the temperature of the gases in the chimney and a corresponding increase in traction. Aerodynamic mode fireplace set has the property of self-leveling, and limited extent, given the many factors … In an open fire under the big chimney draft sucked the air mass. The average fireplace (area of a room of about 30 mg), sucks 700 – 800 m3 of air per hour. This is approximately 10 times the amount required for ventilation. This whole air must enter the premises through the rarefaction created by a chimney fire. At the informal flow of air enters the room through looseness of doors, windows, adjoining rooms, slots, etc. This creates unfavorable conditions for the development of the combustion process. In a fireplace with an organized air supply disposable pressure created by the chimney, must overcome the resistance that occurs in conduits and in the supply duct if it is …

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