Winter fresh air system applicable to large-scale hog house in severe cold and cold regions

A cold area, fresh air system technology, applied in ventilation systems, space heating and ventilation, applications, etc., can solve the problems of increased heating energy consumption, increased construction investment, increased operating costs, etc., to achieve less energy consumption and material consumption , The structure is novel and unique, and the effect of increasing airtightness

CN104737923AActive Publication Date: 2015-07-01HENAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-07-01

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Abstract

The invention relates to a winter fresh air system applicable to a large-scale hog house in severe cold and cold regions; the system is capable of effectively solving the problems of air ventilation of the hog house and heat preservation in winter; the technical scheme is as follows: the system comprises the hog house; the hog house is of a hollow structure which is composed of two longitudinal walls which are arranged at an interval along the long-axis direction of the hog house, transverse walls which are symmetrically arranged at two ends of the longitudinal walls along the short-axis direction of the hog house, and a roof at the top of the horizontal walls and the transverse walls; fresh air pipelines are arranged at the upper part of the inside of the hog house along the long-axis direction of the hog house and is of a rectangular hollow structure with openings at two ends; the openings at two ends serve as air inlets; two air inlet ends are mounted at the upper parts of the transverse walls at the corresponding sides and communicated with the outside of the hog house via penetrating holes in the transverse walls; a plurality of air delivery holes are formed on the front and rear sides of the fresh air pipeline; and blowers are respectively arranged on two longitudinal walls. The winter fresh air system is capable of reducing heating consumption of northern hog houses in winter; stable and uniform speed field and temperature field are formed in the hog house; the cost is reduced, and better heating and heat insulating effects can be obtained by using less energy consumption and material consumption.
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Description

technical field

[0001] The invention relates to a fresh air system, in particular to a winter fresh air system for large-scale pig houses in severe cold and cold regions. Background technique

[0002] With the continuous improvement of the intensification and scale of the pig farming industry, the requirements for hygiene and air comfort in the pig house are also increasing. Especially for large-scale pig houses in severe cold and cold areas, the drop in winter temperature will reduce the growth performance of pigs and affect economic benefits, so it is necessary to heat and insulate the pig houses. At the same time, in order to reduce heating energy consumption in winter, the practice of closing doors and windows is usually adopted. Due to the accumulation of feces and urine, the fermentation of feed bedding, decay and decomposition, etc., a large amount of toxic and harmful gases such as ammonia and hydrogen sulfide will be mixed in the closed pig house. When the concent...

Examples

Embodiment 1

[0046] The length of the pig house L=7.5m; the width of the pig house B=3.5m; the height from the ground to the highest point of the roof is H=2.7m, and the rated air volume of the fan is Q=0.097m 3 / s;

[0047] The length l=7.5m of the fresh air duct of the air duct;

[0048] The length of the section of the fresh air duct is a=0.1m; and the width b=0.07m;

[0049] The length of the air supply hole l 1 =0.12m; width l 2 =0.01m;

[0050] The number of air supply holes on each side of the fresh air duct n = 14;, the wind speed of the air supply holes v = 1.65m / s; d 0 =0.5m;

[0051]The layout of the air supply holes is symmetrical to the center along the fresh air duct, and the spacing increases from either end of the fresh air duct to the center, between the first air supply hole from the end and the N+1=8th air supply hole The lengths of the unopened part of the air duct side wall are: 0.175m, 0.350m, 0.525m, 0.700m, 0.875m, 1.050m, 2.450m.

Embodiment 2

[0053] The length of the pig house is L=18m; the width of the pig house is B=6.5m; the height from the ground to the highest point of the roof is H=3.0m, and the rated air volume of the fan is Q=0.433m 3 / s;

[0054] The length l=18m of the fresh air pipeline of air duct;

[0055] The length of the section of the fresh air duct a=0.22m; and the width b=0.14m;

[0056] The length of the air supply hole l 1 =0.24m; width l 2 =0.02m;

[0057] The number of air supply holes on each side of the fresh air duct is n=15; the wind speed of the air supply holes is v=1.5m / s; d 0 =0.5m;

[0058] The layout of the air supply holes is symmetrical to the center along the fresh air duct, and the spacing increases from either end of the fresh air duct to the center, between the first air supply hole from the end and the N+1=8th air supply hole The lengths of the unopened part of the air duct side wall are: 0.478m, 0.957m, 1.435m, 1.913m, 2.391m, 2.870m, 3.348m, 3.826m.

Embodiment 3

[0060] The length of the pig house L=27m; the width of the pig house B=9.5m; the height from the ground to the highest point of the roof is H=3.3m, and the rated air volume of the fan is Q=0.95m 3 / s;

[0061] The length l=27m of the fresh air pipeline of air duct;

[0062] The length of the section of the fresh air duct a=0.33m; and the width b=0.21m;

[0063] The length of the air supply hole l 1 =0.36m; width l 2 =0.03m;

[0064] The number of air supply holes on each side of the fresh air duct is n=13; the wind speed of the air supply holes is v=1.8m / s; d 0 =0.5m;

[0065] The layout of the air supply holes is symmetrical to the center along the fresh air duct, and the spacing increases from either end of the fresh air duct to the center, between the first air supply hole from the end and the N+1=7th air supply hole The lengths of the unopened part of the air duct side wall are: 1.781m, 1.781m, 5.342m, 5.342m, 8.904m, 8.904m.

[0066] In actual construction, each di...