Method of hybrid unit control and hybrid unit itself for its implementation

FIELD: machine building.

SUBSTANCE: invention relates to the method of a hybrid unit control and to the hybrid unit in which this method can be implemented. Control method for a unit 1 comprising at least a compressor plant 2 and/or a drying unit on one side and a heat regeneration system 3 on the other side. The heat regeneration system 3 absorbs heat from the compressor plant 2. Additionally the hybrid unit 1 comprises a controller 5 and a device 6 to set one or more system parameters. The controller 5 performs control both of the compressor plant 2 and/or the drying unit and the heat regeneration system 3 on the basis of the said system parameters along with the optimisation of the overall efficiency of the hybrid unit.

EFFECT: reduction of total power consumption by the hybrid unit.

3 cl, 1 dwg

 

This invention relates to a method of controlling a combined device and the combined device, which can be applied to this method.

In particular, the invention provides for control of a unit that contains at least the compressor and/or a device for drying and heat recovery system.

It is known that the compression gas compressor installation is associated with the release of huge amounts of heat.

Known compressor with means for heat recovery, with the highest possible efficiency of regeneration. Traditionally, the compressors are equipped with the basic regulation through control of the compressor in accordance with the required amount of compressed air.

In known devices, the flow of coolant is controlled by a thermostatic valve at the outlet of the cooling system. Thus, it is possible to control the flow of refrigerant to the outlet temperature of the cooling system remains constant and equal to a predetermined value.

When using thermostatic valve this set value is fixed and cannot be adjusted in accordance with consumption.

Thus, regardless absorbed by the refrigerant heat outlet temperature of the cooling system the Oia will always be the same.

The disadvantage is that the efficiency of the compressor, and the whole combined system is not optimized.

Thus, due to the lack of any form of optimization, the combined device will be subjected, for example, temperature fluctuations.

These temperature fluctuations are often undesirable and can also contribute to premature wear of the device.

WP 2008/106774 describes the management system converting the heat of the gas engine into electricity. It fails to recognize the extent to which optimization of the heat recovery system affects the efficiency and reliability of the gas engine.

The purpose of this invention is to eliminate one or more of the above disadvantages and/or other disadvantages by providing ways to control a unit that contains at least the unit and/or a device for drying, on the one hand, and the heat recovery system, on the other hand, the heat recovery system absorbs heat from the compressor and/or device for drying, while the combined device further comprises a controller for establishing one or more system parameters of the compressor and/or device for drying and a heat recovery system, the ri this aforementioned system parameters to determine the effectiveness separately, respectively, of the compressor and/or device for drying and a heat recovery system, while the controller operates as a compressor unit and/or a device for drying and heat recovery system, based on the above system parameters, optimizing the overall efficiency of the combined device.

The invention also concerns a combined device, which consists, on the one hand, of the compressor and/or device for drying, and on the other hand, a heat recovery system for heat recovery from compressors and/or device for drying, and above the combined device also includes a means for establishing one or more system parameters of the above-mentioned compressor units and/or devices for drying, and heat recovery system, while the above system parameters are determined by the efficiency separately, respectively, of the compressor and/or device for drying, and heat recovery system, while the above-mentioned means are connected to a controller, which operates as a compressor unit and/or a device for drying and heat recovery system, based on the above system parameters, optimizing the overall efficiency of the combined device.

The advantage is that this method provides the best overall effective is here, which is implemented by the management as compressor unit and/or a device for drying and heat recovery system, so that substantially reduces the overall power consumption of the combined device.

Here, the overall efficiency is not only about energy efficiency, but may also include, for example, economic efficiency.

To ensure the feasibility of monitoring the overall effectiveness, the controller uses some settings from a user device, such as the cost of electricity, the cost of fuel to generate heat and/or similar. In each operating mode of the combined device overall efficiency is estimated on the basis of the regulated system settings and the user settings.

Another advantage is that the control of compressor unit and/or a device for drying and heat recovery system can be reconfigured at each other.

A related advantage is that the combined device can be better protected from many undesirable factors such as excessively high temperatures or large temperature fluctuations cooler, or similar.

When the warning appears all these tender is athelny factors limited as far as possible, the wear of the combined device, and thus the service life of the combined device may be increased.

It is clear that the combination of the two administrations opens prospects for a number of control methods that can be implemented in the management of only the compressor device.

To better represent the characteristics of the invention below by the example disclosed, without any limitation, a preferred variant of the combined device according to this invention, and a preferred method according to the invention, with reference to the accompanying drawing.

The above drawing represents the combined device 1, which in this case, first of all, consists of a compressor device 2 and system 3 heat recovery.

As is known, the compressor device 2 may have a body with the compressor element in him, which is driven by an electric motor.

In addition, the compressor device 2, in General, has a cooling system 4.

According to the invention the combined device 1 also has a controller 5, which is made preferably in the form of a separate electronic component.

In addition, according to the invention, there are means 6, which is able to install one or more system parameters.

Dunn is the first tool 6 may, for example, to include temperature sensors, pressure sensors, etc. and may, for example, be located at the outlet 7 of the compressed gas and/or the output 8 of the cooling system.

This means 6 preferably are connected by electric cables 9-10 controller 5.

According to the invention the method is very simple and is shown below.

First of all, the user must be selected optimization criterion.

This criterion can be pre-programmed into the electronic controller 5, but this is not a necessary condition for the described invention.

To establish system parameters during operation of the combined device 1, one or more system parameters can be measured or established means 6 continuously and/or at regular points in time.

Measured and/or set parameters preferably send on intended for this purpose, lines 9 and 10 data transfer to the controller 5.

On the basis of the measured parameters of the system controller 5 can send the signal as the compressor device 2, and system 3 heat recovery electric cables 11 of the control.

The signals that are sent to the controller 5, depend from the selected criteria, and measured /or set parameters of the system.

It goes without saying that control of the Lehr 5 may also include an algorithm which processes various measured and/or set parameters of the system in General, the system parameter, and that this, the last of these, the total system parameter is optimized in accordance with the established criteria.

According to the invention, as a criterion of the combined device 1 is selected for its highest possible efficiency.

In this case, the controller 5 may be an algorithm that sets the operating modes of the compressor device 2 as a function of the overall efficiency of the compressor device and system 3 heat recovery.

Thus, the algorithm can be based on measured data of the compressor device 2 and/or system 3 heat recovery.

In a practical embodiment of the invention, the controller 5 can, for example, to control the position of valve 12, which affects the flow of cooling water, the valve 12 can, for example, be opened gradually to ongoing regulation of the cooling water flow. Despite this, it is possible to simultaneously and/or manual opening and closing of this valve.

Thus, in this example, in the case of a small increase of the cooling water flow compressor device 2 is cooled better, despite the fact that there may be a greater consumption of energy is.

When the above-mentioned reduction of energy consumption in the compressor device 2, a smaller increase of power consumption in the system 3 energy regeneration, the total energy consumption of the entire device 1 will be reduced and, thus, will be optimized overall efficiency of the combined device 1.

Another example is the emergence of a growth rate of flow of coolant during periods when no energy needs from system 3 heat recovery.

In these circumstances, the flow rate of coolant should not be reduced so as not to cause a high output temperature in the combined device 1 and, hence, in this case the total energy consumption of the combined device 1 will be reduced by managed his work.

An additional criterion that can be selected to control the combined device 1 is, for example, increasing the service life and/or improve the reliability of the combined device 1.

After all, it is well known that frequent or significant changes in temperature or an excessively high output temperature, can lead to direct damage and/or premature wear of these components.

To optimize service life, can be installed the algorithm by which large temperature fluctuations will be left is sterile limited and will, as far as possible, so that the temperature of the combined device 1 will always remain in the safe operating area.

It is clear that such control is possible by the compressor device 2, and system 3 heat recovery.

Another practical example that can be applied to the method according to the invention, is combined device 1 with the compressor device 2 and the boiler.

The stream of water that flows through the boiler, in General, depends on the needs of the pair.

With changing needs in the pair will also change the requirement in hot water to heat it in the boiler.

The application of the method according to the invention allows to control the water temperature as a function of a selected criterion of the combined device 1, and according to the invention, the criterion is to optimize the overall efficiency.

As a possible additional criteria may be selected condition, when the compressed gas is cooled so that hot water is always available for production at any time greater amount of steam.

Another possible additional criterion may be the condition when the compressed gas is cooled efficiently as possible, even with little or no needs for steam production.

Other practical is a mere example, which can be used a method according to the invention, is the heating of water for sanitary system the heat from the compressor device 2.

In sanitary systems, such as showers, in General, there is a constant need for hot water, but hot water consumption is rather periodic.

Thus, it may be temporary, very high demands for hot water, for example, when the user takes a shower.

The purpose of the method according to the invention, the temperature of the refrigerant in the compressor can be controlled so that the compressed gas is cooled and water for sanitation system is heated only when you need hot water in the shower.

Thus, the method according to the invention provides the ability to adjust regulation to a compressed gas, as far as possible, effectively cooled when the demand for hot water in the sanitary system is missing or limited.

Of course, the above is not limited to the heating of pure water for sanitary systems, but may also be applied, for example, a mixture of water and glycol, or, in General, any other liquid or other mixture of liquids and/or any gas or mixture of gases.

The above method provides the advantage that improves the overall efficiency of combined what about the devices 1, ie, joint sanitary system 3 and the compressor device 2.

In a further practical embodiment of the combined device 1 according to the invention, control the speed of the compressor device, and the rotation speed of this compressor device 2 sets the set value of the pressure of the compressed gas at the outlet of the compressor device 2 and within a certain range of pressure against it. As a result, the controller 5 can control the said rotation speed on the basis of what is happening in the heat recovery system, and, for example, to temporarily allow a wider range of pressure relative to the specified value.

Ultimately, the specific consumption of the compressor device 2 also depends on the rotation speed. Even though this may lead to higher consumption, the amount of regenerated energy will also increase, so the potential savings in fuel costs.

It is clear that the concept of the compressor device 2 may refer to a single compressor or compressor group with a number of stages of compression.

Of course, the compressor, the group may be a group of stages of compression connected in both series and parallel series of compressors and/or combinations of them.

The invention is not limited to or and the YMI combined device 1, which contain a combination of compressor 2 and system 3 heat recovery, but also relates to the combined device, which contains a combination of devices for drying and system 3 heat recovery, as in this latter case, the heat generated in the device for drying may be recovered through a system of 3 heat recovery.

In each of the above applications, the compressor 2 can be replaced by a device for drying, or a combination of the compressor 2 with a device for drying.

This invention is not limited to the implementation described as an example and represented in the drawings, with the exception of the method according to the invention, control of the combined device and a combination unit which can be applied this method can be implemented in all kinds of variants, without leaving the scope of the invention.

1. The method of controlling the device (1)which contains, at least, a compressor unit (2) and/or a device for drying and system (3) heat recovery, absorbing heat from the compressor (2) and/or device for drying, characterized in that the combined device (1) includes a controller (5) and means (6) to establish one or more parameters of the system, as to impressoras unit (2) and/or device for drying, and a heat recovery system, while the aforementioned system parameters to determine the effectiveness separately, respectively, of the compressor and/or device for drying and a heat recovery system, with the controller (5) operate as a compressor unit (2) and/or a device for drying, and (3) heat recovery, on the basis of the above system parameters, optimizing the overall efficiency of the combined device (1).

2. The combined device containing the unit (2) and/or a device for drying and system (3) heat recovery compressor (2) and/or device for drying, characterized in that the above-mentioned combined device (1) also includes means (6) to establish one or more system parameters of the above-mentioned compressor (2) and/or device for drying and a heat recovery system, while the aforementioned system parameters to determine the effectiveness separately, respectively, of the compressor and/or device for drying and a heat recovery system, and the above means (6) connected to the controller (5), which operates as a compressor unit (2) and/or a device for drying, and (3) heat recovery, on the basis of the above system parameters, with Optim is the nation overall efficiency of the combined device (1).

3. The device (1) according to claim 2, characterized in that the system (3) heat recovery is a system for heating a fluid medium.



 

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3 cl, 4 dwg

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