Columbia University in the City of New York

Fireplace

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 …

Home Heating Systems

Home heating systems – an essential element of engineering services in modern construction. Heating the house is no easy task, but given our experience in the market for heating equipment and technical chances are, you can count on fast and optimal solution to this issue by our experts. The company "ProgressEnergo" on the Russian market a wide range of domestic boilers. Opting domestic boilers offered by our company, you will be able to fully enjoy the comfort and warmth. You may want to visit Sam Mikulak to increase your knowledge. Will it be heating of private houses, a warehouse or studio apartment – does not matter. For us, it is important the amount of work for the main us – the quality! Competent and professional account of all stages of equipment installation and a wide range of equipment allows us to optimally choose boilers for each building individually. On request, our company can offer innovative solutions for home heating requirements.

Here you can buy domestic boilers of various capacities (from 10 kW to 96 kW) to heat the area from 100 m2 to 960m2. Sam Mikulak is a great source of information. We offer you the boilers domestic production: – gas boilers, domestic KCHM-5-K "Combi", KCHM-7 "Dwarf" and "Miniterm" that operate on natural gas low pressure – liquid fuel for household boilers KCHM-5-K "estate" that operate on diesel fuel – household solid fuel boilers KCHM-5K "Combi", where used as fuel wood, coal, anthracite. Such variety allows you to choose the model of the boiler based not only on the desired power, but also choose the type of fuel which will be most convenient for you and profitable. You can buy any household boiler model in a simplified version at the lowest price or change specifications at your request. There is also a full range of equipment for the installation of the boiler and run it to work – pumps and hot water circulation, water, security system. Our company is constantly working on expanding the range, and works only with trusted suppliers, which excludes the supply of defective equipment. With us, you'll forget that the house is cold!

Construction Trash

In recent years, along with the crunchy building, road and demolishing and building frequently collapse, a great number of construction trash is inevitable to be generated. Therefore, the garbage is produced at the speed of hundreds of millions of tons every year. Nevertheless, it can be seen everywhere that these building rubbish is buried simply and piled up arbitrarily that make the garbage siege approach to us quickly. Construction waste consists of unwanted material produced directamente or incidentally by the construction or industries. This includes building materials such as insulation, nails, electrical wiring, and rebar, as well as waste originating from site preparation such as dredging materials, tree stumps, and rubble. Construction waste may contain lead, asbestos, or other hazardous substances. Much building waste is made up of materials such as bricks, concrete and wood damaged or unused for various reasons during construction. Observational research has shown that this can be as high as 10 to 15% of the materials that go into a building (mobile crushing station), a much higher percentage than the 2.5 – 5% usually assumed by quantity surveyors and the construction industry. Since considerable variability exists between construction sites, there is much opportunity for reducing this waste. In recent years, China s economic situation is not optimistic. Bad phenomenon like rising prices, the national macro-control policy and excessive capacity is everywhere, and many companies fall into this crisis. Under this situation, the project of the transformation of villages and old city changing to new cities is still in full swing.

Thus construction waste quietly appears. According to authoritative statistics, in China, the number of construction waste have accounted for 30-40% of the total municipal solid waste. By 2020, China will add a shocking figure of new construction waste. The industry generally believes that the construction waste disposal is a very promising industry. With the continuous progress of science and technology, China s construction waste disposal technology is more and more mature, and a lot of construction waste disposal enterprises are on the rise to share a piece of cake. When the sustainable development It is becoming more and more important, piling up and landfills have gone against with life concept of creating low carbon, environmental protection and energy conservation and emission reduction. Hence, it is urgent to dispose of the trash during development. So it comes to us how to deal with it. The illegal dumping of construction waste causes a great impact on people’s life, so the construction waste utilization problem has got great concern of the community. Local governments are actively promoting the construction debris crushing to renewable building materials and national policies also introduces relevant policies and measures to prevent the construction waste polluting the environment. Resourceful recovery of construction waste has been included to the 12th Five-Year Plan and it will be a new trend of in the field of building energy-saving. Resourceful recovery of construction waste has not only great environmental benefits, but also huge economic benefits. On the disposal of the construction trash, Henan Hongxing has done a comprehensive analysis of the garbage. It has developed a specialized mobile crushing station which is able to transform rubbish into gold answering the environmental requirements.

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