CN104879893A - Centralized control method of precise air conditioning system - Google Patents

Abstract

The invention discloses a centralized control method of a precise air conditioning system. The centralized control method comprises a temperature rise control method and a temperature reducing control method. The centralized control method of the precise air conditioning system has the following beneficial effects: on the basis of even indoor temperature distribution, arrangement of air conditioner at the same side of a machine room and a consistent space, the method establishes a mathematical relationship between the starting time of a single air conditioner and service life specific to a precise air conditioning system in the same one machine room scale, comprehensively considers the state of a plurality of precise air conditioners, and adjusts the opening and closing strategies at any time by taking the longest service life of the air conditioning system as a goal according to the change of the indoor temperature and humidity. On the basis of ensuring safe and stable operation of the machine room, the centralized control method, the centralized control method avoids the frequency start-stop of a single precise air conditioner, prolongs the service life of the air conditioning system, and saves the maintenance cost of the machine room; therefore, the centralized control method has strong economic value.

Description

A kind of centralized Control method of air precision air conditioning system

Technical field

The invention belongs to precision air conditioner control technology field, particularly relate to a kind of centralized Control method of air precision air conditioning system.

Background technology

Machine room can place the various equipment such as master server, work station, switch, core router usually, and these electricity consumption of equipment amounts, caloric value are all very large.According to statistics, in fiducial temperature situation, temperature often raises 10 DEG C, and the reliability of computer just declines 25%.Therefore, in order to ensure the safety of machine room, guarantee information system safety, stable, reliably run, specification building environment, at utmost avoid the security risk brought thus, need the temperature and humidity of machine room to control in optimum range.Precision air conditioner is the machine room Special precision air conditioner that fully can meet building environment conditional request, and it not only can control computer room temperature, also can simultaneously controlled humidity, therefore also referred to as constant-temperature constant-humidity air-conditioner.But current precision air conditioner separate unit cost up to tens0000 yuan, and is only about 10 years service life, and therefore, the service life how extending precision air conditioner just becomes problem demanding prompt solution.

By observing the multiple stage precision air conditioner in existing machine room, find that its start and stop rule is: once detect that environment temperature or humidity exceed zone of reasonableness and starts immediately, environment temperature or humidity reach the scope of closing down and closes immediately.Lack unified control strategy between multiple stage precision air conditioner, cause single air conditioner frequent start-stop.By analyzing each part of precision air conditioner, find that compressor of air conditioner is the principal element affecting its life-span, and the life-span of compressor and its number of starts positive correlation, start once, once, the life-span just reduces once rush of current.Therefore, the life-span of precision air conditioner and self start-stop time close relation, current control method must cause precision air conditioner frequent start-stop, thus shortens its life-span, adds maintenance cost.

Summary of the invention

In order to solve the problem, the object of the present invention is to provide a kind of centralized Control method of air precision air conditioning system.

In order to achieve the above object, the centralized Control method of air precision air conditioning system provided by the invention comprises: the centralized Control method of air precision air conditioning system comprises method for controlling temperature rise and control method for lowering temp, and wherein control method for lowering temp comprises the following step performed in order:

Step 2.1) Real-Time Monitoring indoor temperature, once temperature exceedes coboundary 1, then go to step 2.2), otherwise repeat step 2.1;

Step 2.2) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and open, time delay n △ t, goes to step 2.3);

Step 2.3) judge whether indoor temperature drops to setting value and following, if judged result is yes, then goes to step 2.4), otherwise go to step 2.2);

Step 2.4) judge that whether opened precision air conditioner number is more than or equal to 1, if judged result is yes, then goes to step 2.5), otherwise go to step 2.1);

Step 2.5) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and close, time delay n △ t, goes to step 2.6);

Step 2.6) judge indoor temperature whether between setting value and lower boundary 2, if judged result is yes, then go to step 2.4), otherwise go to step 2.7);

Step 2.7) judge whether indoor temperature reaches lower boundary 2 and following, if judged result is yes, then closes all precision air conditioners, goes to step 2.1); Otherwise directly go to step 2.1);

Described method for controlling temperature rise comprises the following step performed in order:

Step 3.1) Real-Time Monitoring indoor temperature, once temperature is lower than lower boundary 1, then go to step 3.2), otherwise repeat step 3.1);

Step 3.2) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and open, time delay n △ t, goes to step 3.3);

Step 3.3) judge indoor temperature whether rise to setting value and more than, if judged result is yes, then goes to step 3.4, otherwise go to step 3.2);

Step 3.4) judge that whether opened precision air conditioner number is more than or equal to 1, if judged result is yes, then goes to step 3.5), otherwise go to step 3.1);

Step 3.5) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and close, time delay n △ t, goes to step 3.6);

Step 3.6) judge indoor temperature whether between setting value and coboundary 2, if judged result is yes, then go to step 3.4), otherwise go to step 3.7);

Step 3.7) judge indoor temperature whether reach coboundary 2 and more than, if judged result is yes, then closes all precision air conditioners, then go to step 3.1); Otherwise directly go to step 3.1).

In step 2.2), step 2.5), step 3.2) and step 3.5) in, the object function of described Mathematical Modeling is: $\left\{\begin{array}{c}{D}_K=\min (D_1,D_2,......,D_k)\\ \mathrm{Number}=K\end{array}\right.,$ In formula, 1,2 ..., k is openable precision air conditioner numbering, D _kfor service life the shortest in openable precision air conditioner, K is the precision air conditioner numbering that service life is the shortest, and Number is the precision air conditioner numbering selected.

The beneficial effect of the centralized Control method of air precision air conditioning system provided by the invention: the present invention in indoor temperature distribution evenly, air-conditioning is placed in the same side of machine room and under the consistent prerequisite in interval, for the air precision air conditioning system within the scope of same machine room, set up single air conditioner opening times and the mathematical relationship between service life, and considered the state of multiple stage precision air conditioner, the longest for target for service life with air-conditioning system, adjust at any time according to the change of indoor temperature and humidity and open and close strategy.The present invention, under the prerequisite ensureing computer room safety stable operation, avoids the frequent start-stop of separate unit precision air conditioner, extends air-conditioning system service life, saves room management cost, have stronger economic worth.

Accompanying drawing explanation

Fig. 1 is calculator room equipment and the precision air conditioner putting position figure of the centralized Control method adopting air precision air conditioning system provided by the invention;

Fig. 2 is separate unit precision air conditioner dynamic process schematic diagram;

Fig. 3 be room temperature too high time air precision air conditioning system centralized Control method flow diagram;

Fig. 4 be room temperature too low time air precision air conditioning system centralized Control method flow diagram.

Detailed description of the invention

Be described in detail below in conjunction with the centralized Control method of the drawings and specific embodiments to air precision air conditioning system provided by the invention.

The present invention supposes that indoor temperature distribution is even, and air-conditioning is placed in the same side of machine room and interval is consistent.Calculator room equipment and air-conditioning putting position are as shown in Figure 1.

The centralized Control method of air precision air conditioning system provided by the invention comprises method for controlling temperature rise and control method for lowering temp, when indoor temperature is too high, adopts control method for lowering temp to reduce indoor temperature; When indoor temperature is too low, adopt method for controlling temperature rise to raise indoor temperature.

Fig. 2, for control method for lowering temp, shows the basic dynamic process of separate unit precision air conditioner.The consumption of the corresponding power of temperature decline process, namely utilizes precision air conditioner to regulate to reduce indoor temperature.Temperature rises and means device shutdown, and it is caused by indoor equipment heat radiation that temperature rises.Up-and-down boundary 1 is respectively the temperature bound of machine room requirement, and setting value is the optimum temperature of machine room.When room temperature is higher, when only exceeding coboundary 1, precision air conditioner is just opened and is regulated the room temperature.In order to avoid fluctuations in indoor temperature causes precision air conditioner frequent start-stop, the present invention is arranged when indoor temperature drops to setting value and be following, and precision air conditioner can be closed successively; When indoor temperature drops to lower boundary 2 and be following, in order to avoid reaching lower boundary 1, precision air conditioner must Close All.As shown in Figure 2, when indoor temperature is higher than coboundary 1, air-conditioning open, and when indoor temperature drops to lower boundary 2 precision air conditioner Close All.T ₁, t ₂, t ₃, t ₄be respectively four time points, wherein t ₁-t ₂and t ₃-t ₄time period precision air conditioner is in opening.

Otherwise if indoor temperature is too low, then adopt method for controlling temperature rise, namely temperature ramp de means and utilizes precision air conditioner to regulate to raise room temperature, and temperature decline process is the change that precision air conditioner closes afterwards room temperature.Then precision air conditioner is opened lower than during lower boundary 1 in temperature, the Close All when temperature rises to coboundary 2.

Lack centralized Control to overcome current precise machine room air conditioner, the start and stop of separate unit precision air conditioner are frequent, have a strong impact on the deficiency in air-conditioning service life, the invention provides a kind of centralized Control method of air precision air conditioning system.

The centralized Control method of the air precision air conditioning system that the present invention proposes, adopts method for real-time monitoring, samples, to realize the control to multiple stage air precision air conditioning system every the △ t cycle to indoor temperature and humidity.Wherein, the △ t cycle can be set as the time of several seconds to several hours according to demand for control, and n △ t represents multiple sampling period, and the object of time delay n △ t is the state making indoor temperature and humidity reach comparatively stable.Too high for indoor temperature and to be too lowly described below, too high with the too low situation control method of humidity is identical with it.

As shown in Figure 3, the control method for lowering temp in the centralized Control method of air precision air conditioning system provided by the invention comprises the following step performed in order:

Step 2.1) Real-Time Monitoring indoor temperature, once temperature exceedes coboundary 1, then go to step 2.2), otherwise repeat step 2.1;

Step 2.2) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and open, time delay n △ t, goes to step 2.3);

Step 2.3) judge whether indoor temperature drops to setting value and following, if judged result is yes, then goes to step 2.4), otherwise go to step 2.2);

Step 2.4) judge that whether opened precision air conditioner number is more than or equal to 1, if judged result is yes, then goes to step 2.5), otherwise go to step 2.1);

Step 2.5) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and close, time delay n △ t, goes to step 2.6);

Step 2.6) judge indoor temperature whether between setting value and lower boundary 2, if judged result is yes, then go to step 2.4), otherwise go to step 2.7);

Step 2.7) judge whether indoor temperature reaches lower boundary 2 and following, if judged result is yes, then closes all precision air conditioners, goes to step 2.1); Otherwise directly go to step 2.1).

As shown in Figure 4, the method for controlling temperature rise in the centralized Control method of air precision air conditioning system provided by the invention comprises the following step performed in order:

Step 3.1) Real-Time Monitoring indoor temperature, once temperature is lower than lower boundary 1, then go to step 3.2), otherwise repeat step 3.1);

Step 3.2) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and open, time delay n △ t, goes to step 3.3);

Step 3.3) judge indoor temperature whether rise to setting value and more than, if judged result is yes, then goes to step 3.4, otherwise go to step 3.2);

Step 3.4) judge that whether opened precision air conditioner number is more than or equal to 1, if judged result is yes, then goes to step 3.5), otherwise go to step 3.1);

Step 3.5) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and close, time delay n △ t, goes to step 3.6);

Step 3.6) judge indoor temperature whether between setting value and coboundary 2, if judged result is yes, then go to step 3.4), otherwise go to step 3.7);

Step 3.7) judge indoor temperature whether reach coboundary 2 and more than, if judged result is yes, then closes all precision air conditioners, then go to step 3.1); Otherwise directly go to step 3.1).

In step 2.2), step 2.5), step 3.2) and step 3.5) in, described Mathematical Modeling is the mathematical relationship of precision air conditioner service life and opening times; If think, precision air conditioner service life is 1, then precision air conditioner consumption life D can be expressed as:

$D=\frac{n}{N}$

Wherein, n represents precision air conditioner opening times, and N is that in whole life cycle, precision air conditioner can the number of starts (i.e. compressor of air conditioner can the number of starts).

The specific descriptions of above-mentioned Mathematical Modeling are as follows:

The object function of Mathematical Modeling is: $\left\{\begin{array}{c}{D}_K=\min (D_1,D_2,......,D_k)\\ \mathrm{Number}=K\end{array}\right.,$ In formula, 1,2 ..., k is openable precision air conditioner numbering, D _kfor service life the shortest in openable precision air conditioner, K is the precision air conditioner numbering that service life is the shortest, and Number is the precision air conditioner numbering selected.

The centralized Control method of air precision air conditioning system provided by the invention fully solves the problem of separate unit precision air conditioner frequent start-stop in a machine room, extends the service life of air precision air conditioning system, and its feature is mainly reflected in the following aspects:

1. can carry out centralized Control to multiple stage air precision air conditioning system, the state in conjunction with every platform precision air conditioner carries out unifying decision-making, adds the average life of air precision air conditioning system.

2. this control method has formulated the opening and closing strategy of precision air conditioner, according to the service life of separate unit precision air conditioner, the precision air conditioner that selection will open and close, and considered the state of whole air precision air conditioning system, and control precision air conditioner opening and closing according to the change of indoor temperature and humidity, avoid the frequent start-stop of separate unit precision air conditioner.

Claims (2)

1. a centralized Control method for air precision air conditioning system, is characterized in that: the centralized Control method of described air precision air conditioning system comprises method for controlling temperature rise and control method for lowering temp, and wherein control method for lowering temp comprises the following step performed in order:

Step 2.1) Real-Time Monitoring indoor temperature, once temperature exceedes coboundary 1, then go to step 2.2), otherwise repeat step 2.1;

Step 2.2) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and open, time delay n Δ t, goes to step 2.3);

Step 2.3) judge whether indoor temperature drops to setting value and following, if judged result is yes, then goes to step 2.4), otherwise go to step 2.2);

Step 2.4) judge that whether opened precision air conditioner number is more than or equal to 1, if judged result is yes, then goes to step 2.5), otherwise go to step 2.1);

Step 2.5) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and close, time delay n Δ t, goes to step 2.6);

Step 2.6) judge indoor temperature whether between setting value and lower boundary 2, if judged result is yes, then go to step 2.4), otherwise go to step 2.7);

Step 2.7) judge whether indoor temperature reaches lower boundary 2 and following, if judged result is yes, then closes all precision air conditioners, goes to step 2.1); Otherwise directly go to step 2.1);

Described method for controlling temperature rise comprises the following step performed in order:

Step 3.1) Real-Time Monitoring indoor temperature, once temperature is lower than lower boundary 1, then go to step 3.2), otherwise repeat step 3.1);

Step 3.2) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and open, time delay n Δ t, goes to step 3.3);

Step 3.3) judge indoor temperature whether rise to setting value and more than, if judged result is yes, then goes to step 3.4, otherwise go to step 3.2);

Step 3.4) judge that whether opened precision air conditioner number is more than or equal to 1, if judged result is yes, then goes to step 3.5), otherwise go to step 3.1);

Step 3.5) adopt Mathematical Modeling, choose a precision air conditioner that consumption life is minimum and close, time delay n Δ t, goes to step 3.6);

Step 3.6) judge indoor temperature whether between setting value and coboundary 2, if judged result is yes, then go to step 3.4), otherwise go to step 3.7);

Step 3.7) judge indoor temperature whether reach coboundary 2 and more than, if judged result is yes, then closes all precision air conditioners, then go to step 3.1); Otherwise directly go to step 3.1).

2. the centralized Control method of air precision air conditioning system according to claim 1, is characterized in that: in step 2.2), step 2.5), step 3.2) and step 3.5) in, the object function of described Mathematical Modeling is: $\left\{\begin{array}{c}{D}_K=\min (D_1,D_2,......,D_k)\\ \mathrm{Number}=K\end{array}\right.,$ In formula, 1,2 ..., k is openable precision air conditioner numbering, D _kfor service life the shortest in openable precision air conditioner, K is the precision air conditioner numbering that service life is the shortest, and Number is the precision air conditioner numbering selected.