JP2013170715A - Operation instruction device for air conditioner group - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rational method for relieving a situation in a power peak demand time zone, whereas the total power consumption in a general building has a high ratio of air conditioning power, the situation creating a peak of society-wide power demand is mainly caused in an air conditioning peak time, and suppression of air conditioning operation is important.SOLUTION: A system for forcedly releasing the air conditioning operation or removing it from an air conditioning setting is prepared respectively for a central air conditioning system and an individual dispersion system. Indicating lines thereto are collected to a central operation instruction device, and in the operation instruction device, a mechanism for transmitting a signal for forced operation instruction within the power peak demand time zone is prepared. The operation instruction device is configured to determine a maximum power consumption of each air conditioner being connected, classify all air conditioners into two or several air conditioner groups so that the total maximum power consumption of air conditioners belonging to each group is equalized, and simultaneously transmit the signal from the operation instruction device to the air conditioner groups, whereby all the air conditioners can be alternately operated within an intended power consumption value.

Description

This patent relates to an indicating device for forcibly canceling / returning an electric heat source operation as a power saving measure for an air conditioner or system such as an air conditioner of a building facility.

Air-conditioning and air-conditioning equipment has a central air-conditioning system that has a large-scale heat source in the center, distributes the generated heat and heat and exchanges heat at the necessary places, and air-conditioners, packages, and multi-type air conditioners. Broadly divided into distributed air conditioning. Normally, both air conditioning operations are started before and after the start of business of the building, and are operated almost continuously until the end of business. During operation, the generation of cold / hot heat for air conditioning is controlled according to the degree of the secondary load, and the power consumption required for generating the heat source also fluctuates. In the central air conditioning system, the heat source generation control method corresponding to the heat load is based on the required amount by the control valve that controls the amount of heat processed by the secondary air conditioner according to the load to be air-conditioned. It receives the required amount from the temperature sensor installed in the room and performs it by the control circuit of the control board of the air conditioner.

JP 09-273800 A JP 2007-333349

The total power consumption in a general building is as high as about 30% of the heat source generation part of the air conditioning, with the power ratio for air conditioning being nearly half of the whole. The main reason for creating a peak demand for electricity in society as a whole is that the outside air temperature normally peaks during the cooling season, the cooling heat load of the building peaks, and the power consumption for the supply of cooling increases. is there.

When the supply and demand of electric power is tight, it is necessary to suppress power consumption on the demand side, and in the event of an emergency, the customer side equipment is also required to be forcibly stopped. Air conditioning, which is the main factor that forms a peak, hits the main target, and forced cooling / heating stop measures are taken during peak demand hours. Manual air conditioning stop at peak demand is often done by monitoring power consumption by managers and urgently shutting off power usage manually, and people in the room are forced to work under continuous shutdown of air conditioning operation. It is done. There is a need for a method that can rationally reduce the countermeasure of no cooling at the time when cooling is most necessary in the midsummer.

If the amount of heat source of the air conditioner can be made partial, heat source operation can be reduced and power consumption can be reduced. In normal air-conditioning operation, the amount of heat source corresponding to the load is required. Therefore, there is a measure to increase the non-air-conditioned portion in order to partialize the air-conditioning target, but this is not a preferable measure in terms of forcibly stopping the required air-conditioned space. In addition, there is a measure for partial operation, that is, intermittent operation by partial air conditioning time. In a single air-conditioning system, power consumption is 0-100% in intermittent operation and the cumulative power consumption is reduced, but the peak value at 100% cannot be suppressed. If there are multiple air-conditioning systems, 0-100% operation of each system is performed alternately, and after a certain period of time, the air-conditioning target area is changed and the air-conditioning operation is not performed at the same time. The power consumption is reduced to 50%, and the peak value can be adjusted.

This measure is mainly a countermeasure to be added to the existing central and individual distributed air conditioning equipment. Rather than introducing equipment with new design and large-scale renovation, the existing automatic control equipment will be centrally operated while keeping the hardware of the existing air conditioning and heating equipment intact. The air conditioner group is divided into groups so that the power consumption meter of each group is almost equal, and an indication device that supervises these individual controls is additionally installed, and the grouped air conditioner groups are alternately operated intermittently, and the peak Reduce power consumption during demand. If the start and stop interval is set within a permissible range and is operated, the discomfort of the occupants who receive air conditioning can be reduced or eliminated.

By adding a demand suppression operation instruction device that forcibly instructs the air conditioning system and the automatic control system installed in the air conditioner from the upper level, the heat source operation of the air conditioner is automatically suppressed as a result during peak demand of the power load. And reduce power consumption. It is a device that is mainly added to the existing air conditioning system, and it is possible to reduce the peak demand of electric power without the need for new equipment introduction or large-scale renovation.

If this device is additionally introduced, the administrator is freed from the troublesome manual suppression of demand, and even if the occupant stops air conditioning and the room temperature rises, the air conditioning is performed again after 5 minutes, for example. Therefore, it can be suppressed by mild environmental deterioration. The amount that can suppress peak demand is about 30% of the power supplied to air conditioning (heat source) in general buildings, so the demand target at the time of air conditioning peak is the air conditioning heat source total stop area at peak time If it is thorough, it will be possible to suppress peak demand in a maximum of 30% per customer.

When higher power-saving operation is targeted, it will be effective by expanding the peak demand suppression time zone by changing the setting, so that not only instantaneous peak power suppression but also a significant reduction in accumulated power consumption can be expected. .

When the operation instruction mechanism based on the set temperature is adopted, it is possible to execute the energy saving measure by the room temperature setting relaxation measure even during normal continuous air conditioning. In this case, the integrated power consumption in the normal period and the normal time zone can also be suppressed.

Air conditioners generally operate at full load with 100% capacity at start-up, and the same situation occurs at start-up after stoppage during intermittent operation, which causes excessive power consumption due to excessive processing. At the time of peak demand, the air conditioning load is also at peak demand, and the air conditioner is in an operating state with little surplus capacity that is close to the full load operating state, and the excessive power consumption during intermittent start-up is small.

It is a signal circuit which operates the control valve of the secondary side air conditioner in a central air conditioning type. It is a signal circuit which operates control of the air conditioner in an individual distributed air conditioning type. This is an effect of reducing power consumption by intermittent alternating operation of air conditioners by group. This is an operation instruction algorithm for an air conditioner divided by group.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The target of introduction is mainly the existing electric heating and cooling air conditioning equipment. In the central air conditioning system, an instrumentation circuit as shown in FIG. 1 for forcibly closing a control valve that controls the amount of heat processed by the secondary air conditioner in accordance with the heat load is prepared. In the individual distributed air conditioning system, an instrumentation circuit as shown in FIG. 2 for forcibly instructing the air blowing operation from the air conditioning operation to the setting circuit of the control board unit of the air conditioner (group or single unit) is prepared. The remote instruction unit for concentrating these signal lines is equipped with a function for forcibly outputting a release / return signal to the terminal air conditioner group at a specified time.

A function for transmitting a forced release / return instruction to each air conditioner within the functional time period, in which the peak date, the tight time period and the specified time of the power demand are set in advance as the functional time period in the processing unit of the instruction device To have. In order to equalize the total power consumption of operating air conditioners in a certain time zone within the functional time zone, the maximum heat treatment capacity of each target air conditioner is obtained, and the total value of the heat treatment capacity of each group is divided into 2 to several parts. The air conditioner group of each group that operates in batch is selected so as to be equally divided.

The operation of this apparatus within the functional time zone cancels the air conditioning operation of a specific group of air conditioners at a specified time and leaves the other specific groups of air conditioners intact. For example, if you want to keep 2/3 of the total power consumption of all air conditioners in operation, 1 out of 3 groups will be in a canceled state. If you want to keep it down to 1/2, 1 out of 2 groups will be in a disabled state. In the case where it is desired to suppress to 1/3, 2 out of 3 groups are instructed to cancel the operation. The greater the number of groups with each power consumption meter, the greater the number of cancellation steps, and the more detailed the suppression target value can be. FIG. 3 shows the operating state of the group system and the power consumption reduction effect in that case. FIG. 4 shows an algorithm flow for canceling / returning operation.

It is desirable that the environmental state on the load side of each group is also uniform among the groups, and the operation cancellation / return signal transmission to each group is desirably equally spaced. Moreover, in order to reduce the discomfort of the occupants who are air conditioning recipients, it is desirable to repeat in a short time within a hardware-acceptable range. It is aimed to transmit the operation cancellation / return signal at regular intervals in a short time.

Based on this function, additional functions that are effective from the viewpoint of convenience and energy saving include a function that can set and control the power consumption as a target value. In addition, if the system is not forcedly canceled but instead is forcedly canceled by changing the set temperature, the air conditioning set temperature can be relaxed as an energy-saving measure during periods other than the peak power demand period. It is effective as a combined function. In the central air-conditioning system, the control valve that is controlled according to the heat load is not set to forcibly close, but is set to a temperature that is forcibly released. In the individual distributed air-conditioning system, This is possible by preparing an instrumentation circuit for forcibly instructing the air conditioning set temperature in the setting circuit of the control base unit of the air conditioner (group or single unit).

INDUSTRIAL APPLICABILITY The present invention is used in an industry for manufacturing an operation instruction device for an air conditioner group, such as a central monitoring manufacturer in the field of building equipment.

1 is a control terminal board 2 of an electric automatic valve, a central air-conditioning indoor temperature controller 3 receives and operates a forced operation instruction, a relay 4 that receives and operates a forced operation instruction, and a remote setting adapter 5 that The adapter 6 for centrally operating the air conditioner is an air conditioner outdoor unit 7 is an air conditioner indoor unit.

Claims (4)

In the central air-conditioning and air-conditioning system, an additional device is applied to the instrumentation circuit for the control valve that senses the room temperature etc. installed in each secondary-side air conditioner and adjusts the amount of cold and hot water to the air conditioner. By means of
In the individual distributed air-conditioning / air-conditioning system, a remote control adapter is added to the control board of the air-conditioner, and a device that can receive the setting signal from the outside is applied to forcibly cancel the air-conditioning operation of the indoor unit and to air-conditioning operation or air conditioning By means of removing from the setting,
The operation instruction device is provided with a mechanism to send a signal for forced operation instruction at a set time at a plurality of points in the power peak demand time zone in the set power peak demand period. ,
A signal to cancel / return the air conditioning operation to the grouped air conditioner group by setting the air conditioner group divided into 2 to several groups so that the total of maximum power consumption corresponding to the heat treatment capacity of the air conditioner to which it belongs is equalized By using a structure that broadcasts broadcasts simultaneously,
An operation instructing device capable of alternately operating instead of the entire air conditioner within a target power consumption value. 2. The device according to claim 1, wherein the additional device to the instrumentation circuit includes means for forced release action, or means for causing forced release action by changing a setting to a numerical range that is not normally reached. Driving instruction device. The driving instruction apparatus according to claim 1, wherein the setting of the compulsory instruction is a condition according to a specified time within a specified date / time period, or a determination condition with respect to a power consumption arrival value. 2. The intermittent air conditioning operation by simultaneous broadcast transmission is performed in a short period within a hardware allowable range in order to reduce discomfort of a resident who is a recipient. The driving instruction device according to 1.