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Method for power generation by utilizing chimney effect

A chimney effect and generator technology, applied in wind power generation, solar thermal power generation, engines, etc., can solve problems such as heat consumption, expansion of disasters, and failure of elevator doors to close normally

Inactive Publication Date: 2009-09-16
戴东红 +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under the action of the chimney effect, organized natural ventilation and smoke exhaust can be realized in the room, but its negative impact is also multi-faceted: first, wind and sand are blown into the room through various holes and gaps in the lower part, consuming heat and polluting the room ; secondly, during the process of the wind being pumped from the bottom hall door population to the top floor through the elevator shaft, the elevator door cannot be closed normally; thirdly, when a fire occurs, as the indoor air temperature rises sharply, the volume increases rapidly The chimney effect is more obvious. At this time, various shafts become vertical passages for pulling out fire and smoke, and are the main way for fire to spread vertically, thus promoting the fire to expand the disaster.

Method used

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  • Method for power generation by utilizing chimney effect
  • Method for power generation by utilizing chimney effect
  • Method for power generation by utilizing chimney effect

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Embodiment Construction

[0027] The chimney effect occurs in buildings and structures (such as water towers) that have a shared atrium, vertical ventilation (smoke) ducts, stairwells, etc. Including flue gas) relying on the effect of air density difference, the phenomenon of quickly diffusing or discharging buildings along the passage, that is, the air rises or falls along the space with a vertical slope, causing the air to strengthen the convection phenomenon, which is the chimney effect .

[0028] Due to the difference in gas density, the smoke pipe or building air shaft of a taller building has a non-negligible chimney suction effect, and its suction force is related to the height and the difference in gas density, and its magnitude is expressed as:

[0029] ΔH=gh(ρ1-ρ2), Pa;

[0030] h—the vertical distance from the inlet of the smoke collecting hood to the outlet of the air duct, m; ρ1—the atmospheric density at the outdoor calculated temperature, kg / m3; ρ2—the density of hot air in the air duct...

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Abstract

The invention discloses a method for power generation by utilizing chimney effect, which comprises the following steps: an airflow channel from the ground to the air is constructed; an airflow power generator utilizing airflow to generate power is arranged in the airflow channel; heat is supplied to the inlet of the airflow channel; and the air intensity at the inlet of the airflow channel is lower than that at the outlet of the airflow channel; therefore, airflow for driving the airflow power generator to generate power is produced in the airflow channel. By adopting the method, airflow can be utilized for supplying stable power whether wind exists or not.

Description

technical field [0001] The invention relates to a method for generating electricity by utilizing air flow, in particular to a method for generating electricity by utilizing the chimney effect. Background technique [0002] The current airflow generator is mainly a wind generator, and its power generation principle is that the wind force in nature drives the windmill to rotate to generate mechanical energy, and then converts the mechanical energy into electrical energy. Since the wind force in nature is not constant, wind turbines need complex structures to achieve stable power generation under certain conditions. And when there is no wind, wind turbines cannot generate electricity. [0003] In fact, in addition to the wind that people often feel, there are many "drafts" that people don't pay much attention to, such as the draft formed in the chimney. However, the main function of the chimney is to pull out the fire and smoke, drain the smoke, and improve the combustion con...

Claims

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Application Information

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IPC IPC(8): F03D9/00F03D9/25F03D9/35
CPCY02E10/725Y02E10/465Y02E10/46Y02E10/72
Inventor 戴东红邓才全
Owner 戴东红
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