Multipoint air inlet-based replacement ventilation system by using geothermal energy

A ventilation system and geothermal energy technology, applied in the ventilation field, can solve the problems of difficult multi-point and multi-functional air intake, no outdoor fresh air integration, and difficult matching of system forms, so as to increase comprehensive functions and reduce energy consumption. , Simple and convenient operation and management

Inactive Publication Date: 2012-10-31
CHINA NORTHWEST ARCHITECTURE DESIGN & RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the traditional form of ventilation system cannot fully meet the design requirements of the personalized (energy-saving, green, healthy) ventilation system at the present stage. The main problems are:
[0003] One is that the position and function of the outdoor air inlet are single: there are two main positions of the outdoor air inlet in the traditional ventilation system: the first one is that the outdoor air inlet is set on the outer wall of the building, and its function is only the entrance of outdoor fresh air; The second is that in some special places (such as underground hydropower stations), the outdoor air inlet is generally set at a certain distance from the building, and the outdoor fresh air is sent in by the fan through the pipe ditch (or air duct) connected to the air inlet. Indoors, it is difficult to achieve multi-point and multi-functional air intake methods;
[0004] Second, most of the air supply fans of the ventilation system are placed indoors, which is difficult to match with the personalized multi-point selective outdoor air intake system;
[0005] The third is that the air supply methods of the traditional ventilation system are mostly top air supply and side air supply, which are only used as a way to send fresh air, and it is difficult to realize the comprehensive utilization of other functions of fresh air (such as sending fresh smells outdoors) , the natural cooling capacity of outdoor fresh air, etc.);
[0006] Fourth, the traditional form of ventilation system does not systematically integrate the collection and transportation of outdoor fresh air, the utilization of geothermal energy and reasonable air supply methods

Method used

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  • Multipoint air inlet-based replacement ventilation system by using geothermal energy

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Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1: When there is a season of floral fragrance outdoors, such as spring, autumn or summer, the air intake device in the air intake unit 1 can be opened accordingly, and its working process is: the outdoor air with floral fragrance is filtered by the air intake cap 3 Enter the branch air duct 4, adjust the speed of the ventilator 5 and the opening of the air valve 6 to control the amount of air entering the main air duct 7, and the air in the main air duct 7 is cooled with the geothermal energy exchange area 13 with a relatively stable temperature in the soil 14 , the cooled air enters the working area of ​​the indoor 9 through the air outlet 8 at a relatively low wind speed, and the fresh air sent in provides the natural fragrance of flowers and plants for the indoor 9, and at the same time takes away the waste heat and dirty air in the working area. The tuyere 10 is discharged outdoors.

Embodiment 2

[0040] Embodiment 2: When the outdoor air temperature is high, such as hot summer, for mountainous areas, the air temperature difference between the area under the shade of trees and the area exposed to sunlight is relatively large, and the outdoor air can be introduced by the air intake unit 2 under the shade of trees , its working process is as follows: the air with an outdoor temperature of 30°C enters from the air intake unit 2 under the shade of a tree, is filtered by the air intake cap 3 and enters the branch air duct 4, and adjusts the speed of the ventilator 5 and the opening of the air valve 6 to control the entry The air volume of the main air duct 7 with a buried depth of 4m, and the length of the main air duct 7 are obtained according to the design requirements of the indoor temperature and in combination with the basic principle of buried pipe heat exchange.

[0041] For example, the diameter of the main air duct 7 is 200mm, and when the indoor design temperature i...

Embodiment 3

[0043] Embodiment 3: when the outdoor air temperature is low, such as cold winter, the outdoor air can be entered by the air intake unit with strong solar radiation heat in winter, and enter the branch air pipe 4 after being filtered by the air intake cap 3, and adjust the speed of the ventilator 5 The opening of the air valve 6 controls the amount of air that enters the main air duct 7 with a buried depth of 4m. It can be obtained through heat exchange calculation that the outdoor air exchanges with the geothermal energy in the soil 14 with a relatively constant temperature through the main air duct 7 with a length of 15m. The temperature rise of the air in area 13 (soil temperature is about 18°C) is about 10°C after indirect heat exchange, and the air after heat exchange enters the working area of ​​indoor 9 through air outlet 8 at a relatively low wind speed, providing warmth for indoor 9 air.

[0044] Through the above-mentioned embodiments, the present invention effective...

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Abstract

The invention discloses a multipoint air inlet-based replacement ventilation system by using geothermal energy, comprising a plurality of air inlet units, wherein the air inlet units are communicated with an air supply outlet arranged at the indoor bottom through a main blast pipe; the main blast pipe is embedded in a geothermal energy exchange region with stable temperature in soil to realize outdoor air collection of different regions; an air inlet device can be integrated with equipment, such as outdoor lighting, sound and the like, thus the comprehensive function of the air inlet device is increased; externally arranged blowers are arranged outdoors and dispersedly, thus the externally arranged blowers are convenient to examine and repair and are in particular suitable for small individualized ventilation system, and the system is simple to run and manage; as the geothermal energy is effectively used, the energy consumption of heating or cooling the ventilation system is reduced; by using the mechanism only possessed by replacement air supply, 'air lake' phenomenon, the outdoor air meeting individual needs is earliest sent to a working region at a lower air speed through a replacement lower air supply outlet in different seasons or different time periods, and the outdoor natural environment is used more effectively.

Description

technical field [0001] The invention relates to the technical field of ventilation, in particular to a displacement ventilation system based on multi-point air intake and utilization of geothermal energy. Background technique [0002] At present, the traditional form of ventilation system cannot fully meet the design requirements of the personalized (energy-saving, green, healthy) ventilation system at the present stage. The main problems are: [0003] One is the location and function of the outdoor air inlet. There are two main locations of the outdoor air inlet in the traditional ventilation system: the first one is that the outdoor air inlet is set on the outer wall of the building, and its function is only the entrance of outdoor fresh air; The second is that in some special places (such as underground hydropower stations), the outdoor air inlet is generally set at a certain distance from the building, and the outdoor fresh air is sent in by the fan through the pipe tren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24F7/04F24F13/22F24J3/08
CPCY02E10/10
Inventor 周敏王国栋段海英李晓威
Owner CHINA NORTHWEST ARCHITECTURE DESIGN & RES INST CO LTD
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