Layered air-conditioning system and its energy-saving method serving the high space of railway passenger station

Abstract

The invention provides a stratified air-conditioning system serving high and large space of a railway station and an energy-saving method of the stratified air-conditioning system. The energy-saving method provides the stratified air-conditioning system which comprises vents, air return inlets, air outlets and air inlets, wherein the air return inlets are used with the vents, and the air outlets and the air inlets are used for indoor ventilation. The horizontal plane of the vents is a stratifying plane, the high and large space is divided into a non-air-conditioning area and an air-conditioning area which are above and below the horizontal plane respectively, the vents are used for delivering cool air to the air-conditioning area, the air outlets and the air inlets are positioned in the non-air-conditioning area, ventilation is achieved by means of combined use of the air outlets and the air inlets, and ventilation times obtained by means of combined use of the air outlets and the air inlets are determined according to the formula: alpha1n=(12.9n<2>+20.1n+2746) / 100, wherein the alpha1n refers to energy-saving rate, and the n refers to ventilation times per hour. The stratified air-conditioning system and the energy-saving method have the advantages that the specific quantitative change relation between the indoor ventilation times and the energy-saving rate is discovered creatively, so that the indoor ventilation times can be set according to the law of quantitative change, and consumption is reduced effectively.

Description

technical field [0001] The invention relates to the field of building heating and ventilation, in particular to a layered air-conditioning system and an energy-saving method for serving tall and large spaces in railway passenger stations. Background technique [0002] At present, the architectural space of elevated waiting floors of large railway passenger stations mostly has the characteristics of tall and large spaces. One of the architectural features of national railway stations: the height of the waiting area of ​​a new passenger station is usually 25 meters, and the height of some cross-floor entry halls is more than 30 meters. The height of the passenger waiting area is much smaller than the height of the building space, which is the main reason for the temperature gradient ; [0003] The second feature is that the ratio of the outer wall area to the floor area of ​​the large space is large, and the standard floor of general office buildings is 0.2-0.3m 2 / m 2 , an...

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Problems solved by technology

[0005] Large-scale railway station buildings are characterized by large volume, high storey height, and many entrances and exits, ticket gates, etc., which are connected to the outdoors, which objectively results in the fact that the energy consumption of railway passenger station building enclosures is greater than that of ordinary public buildings; At present, the waiting area of ​​the railway station building is a "waiting" waiting mode, and the staff stays for a long time. The station is densely populated and requires a large amount of fresh air. A large proportion

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