JPH0317459A - Method of controlling comfortable air conditioning - Google Patents

Abstract

PURPOSE:To perform a comfortable controlling of an interior temperature by a method wherein an interior temperature value is controlled with a predetermined interior temperature value being applied as one corrected by a mean radiation temperature. CONSTITUTION:A value in which a predetermined interior temperature tsp is corrected with a mean radiation temperature tr is applied as a new predetermined interior temperature value tsp'. For example, in case that the predetermined interior temperature value tsp is 20 deg.C and a mean radiation temperature tr' is 20 deg.C, grains of transmittance functions G1 and G2 of blocks 2 and 3 are quite high, so that a value of an interior temperature ta becomes 30 deg.C, a temperature felt by a human body becomes (20 deg.C+30 deg.C)/2=25 deg.C, resulting in that it becomes a value equal to a set value. That is, if the predetermined interior temperature value tsp is set as 25 deg.C through a setting device 7, the mean radiation temperature tr is detected as 20 deg.C by a mean radiation temperature sensor 8 mounted on a ceiling surface, and then a fan coil device 10 is driven by a controller 9 and the interior temperature ta detected by the temperature sensor 11 is controlled to show 30 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for controlling indoor temperature values, and particularly to a comfortable air conditioning control method that takes average radiant temperature into consideration.

[Conventional technology]

FIG. 5 is a block system diagram for explaining a conventional indoor temperature control method. In the same figure, 1 is a subtracter, 2.3
is a transfer function block of transfer functions Gl and G2. Further, tsp is the indoor temperature set value, t. is the indoor temperature value.

The transfer interval Gl of block 2 performs PID control on the command value tip ta, and the transfer function 02 of block 3 converts the indoor temperature t. This includes the delay until catching the . In Fig. 5, the relationship between tsp and t1 is found as follows: t,=G1・G2・j sp/(1 + Ql・
G2) ・ ・ ・(11)

[Problem to be solved by the invention]

Conventionally, as can be seen from equation (1), the average radiant temperature was not taken into account when controlling the indoor temperature, so if the average radiant temperature was different from the indoor temperature, people felt hot or cold. This feeling was especially noticeable in the perimeter zone.

The present invention has been made in view of these points, and its purpose is to provide a method for comfortably controlling indoor temperature by taking the average radiant temperature into account.

[Means to solve the problem]

To achieve this purpose, the present invention provides a method for controlling an indoor temperature value to an indoor temperature set value. , the indoor temperature value is controlled using a value obtained by correcting the indoor temperature set value using the average radiant temperature.

[Effect]

Therefore, according to the present invention, the indoor temperature set value is corrected based on the average radiant temperature, and the indoor temperature value is controlled in accordance with the new corrected indoor temperature set value.

〔Example〕

Hereinafter, the comfortable air conditioning control method according to the present invention will be explained in detail.

FIG. 1 is a block system diagram for explaining a first embodiment of this comfortable air conditioning control method. In the figure, 4 is an adder, 5.6 is a subtracter, and the same or equivalent parts as in FIG. 5 are given the same reference numerals.

The difference between the block system diagram shown in Fig. 1 and the block system diagram shown in Fig. 5 is that the indoor temperature set value t■ is changed to the average radiant temperature t,
The point is that the value corrected by is set as the new indoor temperature set value t5,゛. From Fig. 1, the relationship between the indoor temperature set value t,2, the average radiant temperature port, and the indoor temperature L, is as follows (2
) is as follows.

tm=Gl-02 (tsp+tsptr)
/(1+G1・G2)...(2) For example, if the indoor temperature set value t3p is 25℃ and the average radiant temperature C is 20℃, the gains of the transfer functions 01・G2 of blocks 2 and 3 are very large. , room temperature t. The value of is 30°C, and the temperature felt by humans is (20°C + 30°C)/2 = 25°C, which is equal to the set value. That is, in FIG. 2, if the indoor temperature set value t0 is set as 25° C. via the setting device 7, the average radiant temperature sensor 8 installed on the ceiling surface
In addition, the average radiant temperature 1, is detected as 20°C, and the fan coil unit 10 is driven by the controller 9, and the indoor temperature t, detected by the temperature sensor 1l becomes 3.
The temperature is now controlled at 0°C.

FIG. 3 is a block system diagram showing a second embodiment of the comfortable air conditioning control method according to the present invention. In the same figure, 12.13
is a subtracter, l4 is an adder, and 15 is a transfer coefficient of 0.4.
8, l6 is the second transfer coefficient block whose transfer coefficient is 1/0.58, 17
is the third transfer coefficient block whose transfer coefficient is K. Further, te is the effective temperature, and tz is the zero correction temperature value.

That is, in this embodiment, the effective temperature te is used as the indoor temperature set value, and the indoor temperature set value te is corrected by the average radiant temperature 2 and the zero correction temperature value tz. Temperature set value t
．． 1, and this indoor temperature set value t. It is assumed that the indoor temperature is controlled at 1m to match the above.

Here, to explain the effective temperature te, the sensible temperature is generally determined by air temperature, radiant temperature, humidity, and airflow velocity. The sensible temperature during heating is particularly influenced by air temperature and radiant temperature.

For example, according to the Practical Air Conditioning Technology Handbook, the sensible temperature is evaluated as the effective temperature te, and te is the indoor temperature t. and the average radiant temperature G, t e =0.58t. +0.48t, -2.2
...13).

That is, in this embodiment, the block system diagram shown in FIG. 3 is realized by skillfully expanding the above equation (3) as follows.

First, in equation (3) above, 2.2 is the zero correction temperature value t
z, t e =0.58ta +0.48tr t z
...(4) is expressed. Here, when it is desired to change the indoor temperature t1 by the average radiant temperature 1, with respect to the setting of the effective temperature te, the set value for the indoor temperature t1 is set to t.゛and,
《4) When formula is expanded, te=Q. 58tm +0.48tr tz・
...(5), ja' = (t e 0.48t, +
t z) /Q. 53・・・(6) Generally, the basic block diagram of a control system with t,+ as a set value is shown in Fig. 4, and its basic formula is (ta' - tm) ・K=t, . . .
(7) becomes. Expanding this equation (7), tll ′ 'Kta ・K= t, ・ ・
・(8) becomes 1,=1,“ ・K/ (1 +K) ...(9)
becomes. Here, by substituting equation (6) into equation (9), we get ((t e O.'48tr + t z) /0.
58) #ta...(self) becomes. If we create a block diagram based on this αυ formula,
The block system diagram shown in FIG. 3 is obtained.

In this way, according to each of the above embodiments, the average radiant temperature G
By controlling the indoor temperature t, taking into consideration, it becomes possible to provide humans with a comfortable environment that is neither hot nor cold in the perimeter zone.

Furthermore, when the average radiant temperature C is high, not only can a comfortable environment be provided, but also the output of the heat source for indoor temperature control can be lowered to save energy, resulting in an energy-saving facility.

〔Effect of the invention〕

As explained above, according to the comfortable air conditioning control method according to the present invention, the indoor temperature set value is corrected by the average radiant temperature, and the indoor temperature value is controlled according to the corrected new indoor temperature set value. It is possible to eliminate the influence of radiant temperature, provide humans with a comfortable environment that is neither hot nor cold in the perimeter zone, and also has the effect of reducing heat source output when the average radiant temperature is high.

[Brief explanation of the drawing]

FIG. 1 is a block system diagram for explaining a first embodiment of the comfortable air conditioning control method according to the present invention, FIG. 2 is a schematic structural diagram of an air conditioning system to which this comfortable air conditioning control method is applied, and FIG. The figure is a flow system diagram for explaining the second embodiment of the comfortable air conditioning control method according to the present invention, and FIG. 1 is a basic block diagram of a control system with a set value of 1. FIG. 5 is a block system diagram for explaining a conventional indoor temperature control method. 2.3...Transfer function block, 4...Adder, 5,
6... Subtractor, 7... Setter, 8... Average radiation temperature sensor, 9... Controller, 10... Fan coil unit, 11... Temperature sensor.

Claims (1)

[Claims] 1. A comfortable air conditioning control method for controlling an indoor temperature value to an indoor temperature set value, the method comprising controlling the indoor temperature value as a value obtained by correcting the indoor temperature set value by an average radiant temperature.