CN102607252A - Method for controlling temperature and humidity of solar drying room precisely - Google Patents
Method for controlling temperature and humidity of solar drying room precisely Download PDFInfo
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- CN102607252A CN102607252A CN2012100820853A CN201210082085A CN102607252A CN 102607252 A CN102607252 A CN 102607252A CN 2012100820853 A CN2012100820853 A CN 2012100820853A CN 201210082085 A CN201210082085 A CN 201210082085A CN 102607252 A CN102607252 A CN 102607252A
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Abstract
The invention discloses a method for controlling temperature and humidity of a solar drying room precisely, which includes the following steps: A. collecting room temperature T1 of the drying room, air outlet temperature T2 of a solar air heat collector and room temperature M of the drying room; B. judging whether T1 is not smaller than a first set value a, judging if M is smaller than a second set value c, and if T1 is not smaller than the first set value a and M is smaller than the second set value c, closing a solar heat collecting device, an auxiliary heating device and an electric air door of a dehumidifier, and executing the step A repeatedly; otherwise entering next step; C. judging whether T2-T1 is not larger than a third set value b, judging whether M is smaller than a set value c simultaneously, and if T2-T1 is not larger than the third set value b and M is smaller than the set value c, a circulating fan is closed, the solar heat collecting device does not work, and the step A is repeated; otherwise entering next step; and D. starting the circulating fan, exchanging air of the drying room through the solar heat collecting device, and repeating the step A. The method for controlling the temperature and the humidity of the solar drying room precisely judges outdoor and indoor humidity timely, achieves linkage control of all drying devices, and can precisely control the temperature and the humidity in the drying room.
Description
Technical field
The present invention relates to a kind of solar energy drying room temperature and humidity autocontrol method.
Background technology
The basic structure in solar energy drying room is: the solar energy heat collection equipment that is made up of solar energy air heat collector, circulating fan and circulating line heats air; The hot blast of exporting from the air outlet of solar energy air heat collector gets into drying shed; And the air inlet of taking the air input solar energy air heat collector in the drying shed away reheats; Thereby form an independently air heat circulation circulatory system, solar energy air heat collector is through realizing the circulation UNICOM of air in circulating fan and the drying shed.When illumination such as overcast and rainy grade was not enough, drying shed carried out supplementary heating through assisted heating device to indoor temperature, realizes round-the-clock drying to target object, dehumidifying.And the humidity regulation of drying shed, mainly the MOD control room inner air and outer air of the independent dehumidifier that is provided with of dependence circulates.
Temperature and humidity is regulated the quality that directly influences dried material in the solar energy drying room; Temperature is high, humidity is little, and then drying effect is better, for different materials to be dried; It is the attribute of target material; Temperature and humidity requirement in the drying shed differ, need be behind major parameter such as design temperature and humidity, and the drying equipment in the drying shed can carry out the requirement that comparatively accurate control just can meet the user.
Tradition solar energy drying room adjustment mainly is that the start and stop of the circulating fan in control assisted heating device and the solar energy heat collection equipment realize.Temperature T 1 in temperature sensor detects the solar energy drying room (between 40-80 degree centigrade) is when being lower than setting value, and solar energy circulating fan and assisted heating device start simultaneously; When T1 reached setting value, solar energy and assisted heating device stopped simultaneously.Solar energy drying room humidity regulation then mainly is that the switching of MOD through the control dehumidifier realizes that humidity M (between the 10%-60%) is when being higher than setting value in humidity sensor detects the solar energy drying room, and MOD is opened; When M was lower than setting value, MOD was closed, and reduced solar energy drying room humidity through gravity-flow ventilation.
Above-mentioned solar energy drying room temperature-controlled process does not take into full account the influence of solar energy factor; The only single start and stop of controlling solar energy circulating fan and assisted heating device according to aforementioned T1; But under the situation of photoing badly day; Solar energy air heat collector sometimes becomes thermal window on the contrary, causes whole solar energy drying system thermal efficiency to reduce.
Aforementioned solar energy drying room humidity control method is not considered the actual demand of dry materials; Only control the switching of MOD according to M, under the overcast and rainy continuously situation, it is not smooth often to ventilate in the solar energy drying room; Material is perishable and rotten, and user's economic loss is very big.
Summary of the invention
For overcoming the defective of above-mentioned prior art, technical problem to be solved by this invention is intended to provide the method for a kind of accurate control solar energy drying room temperature, humidity.
For solving the problems of the technologies described above; The present invention proposes the method for a kind of accurate control solar energy drying room temperature, humidity; Wherein, Solar energy heat collection equipment comprises the air heat and the circulatory system that solar energy air heat collector, circulating fan and circulating line constitute, and solar energy air heat collector is communicated with the circulation of realization air in the drying shed through circulating fan; Described control method may further comprise the steps:
A. gather the indoor temperature T1 of drying shed, the air outlet temperature T 2 of solar energy air heat collector, drying shed indoor humidity M;
B. judge whether T1 is not less than the first setting value a, and whether judge M simultaneously, as to be then to close the MOD of the dehumidifier of solar energy heat collection equipment, assisted heating device and drying shed, and repeat steps A less than the second setting value c; Otherwise, get into next step;
C. judge whether T2-T1 is not more than the 3rd setting value b, whether judge M simultaneously less than setting value c, as be and be, then close circulating fan, solar energy heat collection equipment is not worked, and repeats steps A; Otherwise, get into next step;
D. the ON cycle blower fan is taken a breath to drying shed by solar energy heat collection equipment, and repeating step C.
In said method, when carrying out step B, if T1 less than a, then opens the assisted heating device of drying shed, execution in step C again.
In said method, can also when carrying out step B,, then open the MOD of the humidity conditioner of drying shed if M is not less than c, with realization drying shed is taken a breath, and continue execution in step C.
Adopt the present invention; Owing to increased monitoring to solar energy air heat collector air outlet temperature T 2, judge in good time weather rain or shine with drying shed in humidity, realize the interlock control of the MOD of circulating fan and dehumidifier in assisted heating device, the solar energy heat collection equipment; Thereby can comparatively accurately control the temperature and humidity in the drying shed; Be the dry requirement that drying shed meets the target material as far as possible, when illumination is sufficient, utilize solar air heat collection equipment as far as possible; And when illumination such as overcast and rainy grade is not enough, be unlikely to the heat of too much loss assisted heating device.
To and combine accompanying drawing that the present invention is elaborated through embodiment below.
Description of drawings
Fig. 1 is the FB(flow block) of control method according to the invention.
The specific embodiment
With reference to accompanying drawing 1, the structure of drying shed according to the invention and drying equipment and traditional drying room are unanimous on the whole, and difference is the temperature to drying shed, the control method of humidity.
After the target material of drying is ready, at first carry out steps A: by indoor temperature T1, the solar energy air heat collector air outlet temperature T 2 that sensor detects, gathers drying shed, drying shed indoor humidity M.
After general circulating fan in solar energy heat collection equipment ran well, fine like weather, T2 and T1 differed 3-8 degree centigrade, as be overcast and rainy or when night, illumination deficiency, T2 and T1 difference are little, and difference can be ignored.Conversely, difference in view of the above, establishing it is the second setting value b, promptly the size of b judges whether illumination is sufficient.
Of background technology, according to the attribute of target material, temperature T 1, humidity M in the drying shed should have specific requirement, promptly T1>=a certain setting threshold, to establish it be the first setting value a; Simultaneously<a certain setting threshold, to establish it be the 3rd setting value c to M, satisfies dry requirement just now, or the dry environment for allowing; Control method of the present invention; Purpose is exactly to guarantee that the environment in the drying shed meets the requirement of setting as far as possible all the time, and the environment in the drying shed reaches requirement when (meeting drying parameter), and items of equipment can temporarily be shut down; Rely on the gravity-flow ventilation in room to keep aforementioned dry environment; And do not satisfy these drying parameters at it, and starting corresponding apparatus to regulate in good time, the environment in drying shed reaches till the requirement again.
For this reason, carry out step B again: judge whether T1 is not less than the first setting value a (T1>=a), and judge that simultaneously M is whether less than the second setting value c (M<c); As be and be; Explain that the environment in the drying shed meets the requirements, and at this moment, can close the MOD of the dehumidifier of solar energy heat collection equipment, assisted heating device and drying shed; So both energy savings; Be unlikely to again to make that the interior temperature of drying shed is too high, humidity is too small, drying shed can continue to keep this state, in good time repeated execution of steps A; Otherwise, explain that the environment in the drying shed is undesirable, need to start relevant device and carry out the adjusting of temperature or humidity, get into next step C thus.
In step C, judge whether T2-T1 is not more than the 3rd setting value b, whether judge M simultaneously less than setting value c, as be and be; Explanation is overcast and rainy, and the temperature in the drying shed mainly comes from assisted heating device, at this moment, though humidity meets dry requirement; But need close circulating fan, solar energy heat collection equipment is not worked, and avoids the meaningless heat radiation of solar energy heat collection equipment; Waste energy, and repeat steps A, continue monitor temperature and humidity; Otherwise humidity does not meet dry requirement or outside for fine, gets into next step D this moment: the ON cycle blower fan, to drying shed hydrofuge or drying shed carried out solar energy heating by force, make full use of solar energy, and repeating step A once more, continue monitor temperature and humidity.
When carrying out above-mentioned steps B, as<a explains that temperature is low excessively in the drying shed, and can open assisted heating device this moment, after drying shed is heated, at execution in step C to judge T1; If T1>=a then need not to start assisted heating device, directly execution in step C gets final product, and this step can promote the drying shed temperature, guarantees that the drying shed temperature meets the setting requirement.
On the other hand, when carrying out above-mentioned steps B, as judge M>=c, explain that humidity is excessive in the drying shed, can open the MOD of dehumidifier at this moment, by dehumidifier to drying shed hydrofuge, execution in step C by force; If<c then need not to start dehumidifier to M, and directly execution in step C gets final product, and this step can reduce drying shed humidity, guarantees that drying shed humidity meets the setting requirement.
After adopting above-mentioned control method, lower like the drying shed temperature, assisted heating device can be corrected in good time, regulate, and makes temperature be able to promote; Higher like drying shed humidity, the MOD of opening dehumidifier can carry out the inner air and outer air circulation in good time, reduces indoor humidity, and the environment in drying shed meets the requirements.
Be not difficult to find out, in the above-mentioned adjustment process, both can have avoided when illumination such as overcast and rainy grade is not enough; The meaningless heat radiation of solar energy heat collection equipment again can be when illumination be sufficient, and solar energy heat collection equipment starts the temperature and the humidity of participating in regulating drying shed as far as possible; Effect is very good, and basic reason just is that the present invention has increased a temperature sensor, detects solar energy air heat collector air outlet temperature T 2 in good time; Through judging the difference b of T2 and T1, how accurately to confirm, make full use of solar energy, and combine the in good time humidity M size that detects to confirm the start and stop of circulating fan; Realize the intelligent linkage of assisted heating device, solar energy heat collection equipment and dehumidifier, can farthest utilize solar energy on the one hand, can accurately control temperature, the humidity in the solar energy drying room on the other hand; Thereby; No matter be dry effect, or the energy consumption of drying shed, all be significantly improved than prior art.
Claims (3)
1. accurate method of control solar energy drying room temperature, humidity; Wherein, Solar energy heat collection equipment comprises the air heat and the circulatory system that solar energy air heat collector, circulating fan and circulating line constitute, and solar energy air heat collector is communicated with the circulation of realization air in the drying shed through circulating fan; Described control method may further comprise the steps:
A. gather the indoor temperature T1 of drying shed, the air outlet temperature T 2 of solar energy air heat collector, drying shed indoor humidity M;
B. judge whether T1 is not less than the first setting value a, and whether judge M simultaneously, as to be then to close the MOD of the dehumidifier of solar energy heat collection equipment, assisted heating device and drying shed, and repeat steps A less than the second setting value c; Otherwise, get into next step;
C. judge whether T2-T1 is not more than the 3rd setting value b, whether judge M simultaneously less than setting value c, as be and be, then close circulating fan, solar energy heat collection equipment is not worked, and repeats steps A; Otherwise, get into next step;
D. the ON cycle blower fan is taken a breath to drying shed by solar energy heat collection equipment, and repeats steps A.
2. the method for accurate control solar energy drying as claimed in claim 1 room temperature, humidity is characterized in that: when carrying out step B, if T1 less than a, then opens the assisted heating device of drying shed, and execution in step C again.
3. according to claim 1 or claim 2 arbitrary accurate control solar energy drying room temperature, the method for humidity; It is characterized in that: when carrying out step B,, then open the MOD of the humidity conditioner of drying shed if M is not less than c; With realization drying shed is taken a breath, and continue execution in step C.
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| CN2012100820853A CN102607252A (en) | 2012-03-27 | 2012-03-27 | Method for controlling temperature and humidity of solar drying room precisely |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033028A (en) * | 2013-01-22 | 2013-04-10 | 拉萨市城关区地毯厂 | Solar continuous drying system and method |
| CN107461999A (en) * | 2017-07-19 | 2017-12-12 | 广东美的厨房电器制造有限公司 | A kind of control method and device of drying plant |
| CN109497777A (en) * | 2018-11-09 | 2019-03-22 | 福建工程学院 | Tealeaves showcase and its working method |
| CN111854342A (en) * | 2020-06-29 | 2020-10-30 | 祁东县双桥粮食购销有限责任公司 | Camellia seed drying system |
| CN112611174A (en) * | 2020-11-30 | 2021-04-06 | 扬州大学 | Multi-energy complementary drying control system |
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| CN201740355U (en) * | 2010-08-20 | 2011-02-09 | 昆明理工大学 | Natural rubber drying system assisted by solar energy |
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| US4432147A (en) * | 1981-06-24 | 1984-02-21 | The United States Of America As Represented By The Secretary Of Agriculture | Energy efficient lumber dry kiln using solar collectors and refrigeration system |
| CN101144683A (en) * | 2007-08-29 | 2008-03-19 | 彭坚宁 | Solar energy hot air current heated dried material produced by power-free style |
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| CN101907381A (en) * | 2010-08-13 | 2010-12-08 | 北京林业大学 | Method for drying wood by using solar energy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033028A (en) * | 2013-01-22 | 2013-04-10 | 拉萨市城关区地毯厂 | Solar continuous drying system and method |
| CN107461999A (en) * | 2017-07-19 | 2017-12-12 | 广东美的厨房电器制造有限公司 | A kind of control method and device of drying plant |
| CN109497777A (en) * | 2018-11-09 | 2019-03-22 | 福建工程学院 | Tealeaves showcase and its working method |
| CN111854342A (en) * | 2020-06-29 | 2020-10-30 | 祁东县双桥粮食购销有限责任公司 | Camellia seed drying system |
| CN112611174A (en) * | 2020-11-30 | 2021-04-06 | 扬州大学 | Multi-energy complementary drying control system |
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Application publication date: 20120725 |