JPH02225924A - Thermal storage air conditioning system with floor heating - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application J This invention relates to a thermal storage air conditioning system that uses a thermal storage floor heating system.

[Conventional technology]

Recently, floor heating systems are being introduced to achieve a comfortable indoor environment for air conditioning in homes and various facilities.

Regarding floor heating systems, thermal storage floor heating systems using heat pumps that utilize nighttime electricity are considered promising, but at present, most heating sources are electric heaters.

In order to operate the thermal storage air conditioning system combined with floor heating most efficiently, it is desirable to use the heat source of a heat pump or point heat supply system, and for this purpose it is recommended to introduce a thermal storage floor heating mat that uses hot water as the heating source. . It is known that a heat storage air conditioning system and a heat storage floor heating system are installed separately, or a floor heating system without heat storage is used in combination with an air conditioner. (For example, air conditioning and refrigeration 19
(January 1989 issue, pages 155 and 156) However, at present, there is still no system that integrates a thermal storage air conditioning system and a thermal storage floor heating system.

[Problem to be solved by the invention] A floor heating system is only needed in winter and is not used for cooling in summer.Therefore, conventionally, a heat pump air conditioning system and a floor heating system are installed separately, but these two systems are not used for cooling. Until now, there has never been anything that completely integrates these into one circuit.

The purpose of this invention is to integrate a regenerative floor heating system and a regenerative air conditioning system, and to improve energy efficiency by considering how to arrange them since each device has a different applicable temperature.

[Means and Effects for Solving the Problems J This invention provides a thermal storage air conditioning system that uses a thermal storage floor heating system and a T/A type air conditioning system that operates by obtaining a heat source from a heat pump or a point heat supply system. Arrange three devices in series: an indoor radiator, and a heat storage floor heating mat, and create a loop circuit that connects to the heat exchanger on the heat source side via a circulation pump, and connect multiple pieces of the above four devices as necessary. This is a heat storage air conditioning system that combines floor heating and heat storage to perform the required air conditioning or heat storage.

Considering that there is a difference in the operating temperature of each device between a regenerative floor heating system and a regenerative air conditioning system, the arrangement of the devices was determined and the two systems were integrated. That is,
An indoor radiator is inserted between the heat storage tank and the heat storage floor heating mat to store heat.

[Example] The present invention will be described in detail below based on the drawings. 1st
The figure is a circuit diagram showing the configuration of a heat storage air conditioning system combined with floor heating. That is, a heat storage tank 1 that stores energy for air conditioning at night, a floor heating mat 3 having an indoor radiator 2 for air conditioning and a heat storage board 11 are connected in series, and a hot water pump 5
The heat source side heat exchanger 4 is connected to the heat source side heat exchanger 4 via piping 12. The heat storage tank l has a heat storage tank bypass valve 6, and the air conditioning radiator 2 has an indoor heat radiator bypass valve a.

The floor heating mat 3 is provided with a floor heating bypass valve 8, and the heat source side heat exchanger 4 is provided with a heat exchanger bypass valve 9.

The floor heating mat 3 is provided with a floor heating stop valve 10.

Conventionally, in a general heat storage air conditioning system, a heat storage tank l and a heat radiator 2 are connected in parallel, as shown in FIG. That is, the heat storage tank 1 includes a heat source side heat exchanger 4 and a hot water circulation pump 5. The control valve 13 is connected to the piping 14, and the radiator 2, the hot water circulation pump 5', and the control valve 1
Generally, they are connected by a pipe 14' via a pipe 3'.

When an air conditioning system is introduced into a general household, it becomes necessary to operate it even during late night hours. Additionally, early morning heat dissipation is necessary to speed up the rise of room temperature in the morning.

Based on this idea, we devised a heat storage system that allows the radiator 2 to operate even during heat storage hours at night.

FIGS. 2(A), 2(B), and 2(C) are graphs showing an example of the time characteristics of the temperature difference between the inlet and outlet of the heat storage tank 1° indoor radiator 2 and heat storage floor heating mat 3, respectively. The horizontal axis is time and the vertical axis is temperature difference.

When the heat storage tank l receives heat from the heat source, the maximum concentration (usually 55
℃) - It becomes important to store heat in the cup. Furthermore, the melting point of the heat storage material in the floor heating mat 3 is generally 25 to 35 degrees Celsius, so
Heating at around 40°C is desirable.

Therefore, these three devices are combined into a heat storage tank 1. Heat sink 2. Connect the floor heating mats 3 in series,
When heated from a heat source of 55°C, the temperature relationships shown in Table 1 are obtained.

Table 1: Heat storage tank 1. Radiator 2i3 and floor heating mat 3
If these three devices are arranged as shown in FIG. 1, heat can be stored with a temperature distribution suitable for the operating temperature of each device. When the room temperature reaches a predetermined temperature, the indoor radiator bypass valve 7 can be opened to bypass the hot water, and when the floor heating mat 3 has completed storing heat, the floor heating bypass valve 8 can be opened in the same way to bypass it. Bye.

In addition, when the heat stored in the heat storage tank l is to be radiated indoors, the heat storage tank bypass valve 6 and the indoor radiator bypass valve 7 are closed, and the floor heating mat bypass valve 8 and the heat exchanger bypass valve 9 are opened. The hot water is circulated by the hot water circulation pump 5. When the heat in the heat storage tank 1 is used up, the heat storage tank bypass valve 6g and the floor heating mat bypass valve 8 are opened, and the indoor radiator bypass valve 7 and the heat exchanger bypass valve 9 are closed.
The heat obtained from the radiator 2 can be applied to the radiator 2. This is what is called rekindling.

Since floor heating is not used in the summer, the floor heating mat stop valve lO is closed and turned on except when heating is being performed, and therefore when cooling is the same as the air conditioning circuit that uses normal brine.

At this time, since the heat storage tank 1 becomes ice heat storage, it is desirable to use brine (antifreeze), which can be used in both summer and winter, as the circulating medium in this circuit.

Note that the brine inlet, shutoff valve, etc., which are unnecessary for the explanation of this invention, are omitted because they would be complicated.

Further, the shutoff valve is also necessary for removal during maintenance of each device, but this is also omitted.

〔Effect of the invention〕

As explained above, the heat storage air conditioning system combined with floor heating of the present invention is provided.

■A thermal storage air conditioning system that integrates a thermal storage tank and a thermal storage floor heating mat.

■ By arranging the heat storage tank, indoor radiator, and floor heating mat in an orderly manner, a circuit configuration can be created that can store heat with a temperature distribution appropriate to the operating temperature of each device, making it possible to use energy efficiently.

■This circuit can satisfy all air conditioning conditions by selectively operating each device, and can be applied to both cooling and heating without changing the circuit.

It has excellent actions and effects such as.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing the configuration of a heat storage air conditioning system combined with floor heating showing an embodiment of the present invention, and FIG. 142 (A) and (B)
, (C) is a graph showing the time characteristics during heat storage of each component device shown in FIG. 1 above. FIG. 3 is a circuit diagram of a conventional heat storage air conditioning system using brine. Fig. 1 1...Thermal storage tank 2...Indoor radiator 3...Thermal storage floor heating mat 4...Heat source side heat exchanger 5...Hot water circulation pump 6.7, 8.9...Bypass Valve lO... Floor heating mat stop valve 11... Heat storage board for floor heating 12... Piping diagram 2 (J) (C)

Claims (1)

[Scope of Claims] A thermal storage air conditioning system that uses a thermal storage air conditioning system operated by obtaining a heat source from a heat pump or a point heat supply system, and a thermal storage floor heating system, comprising: a thermal storage tank, an indoor radiator, and a thermal storage floor heating mat. These four devices are arranged in series to create a loop circuit that connects to the heat exchanger on the heat source side via a circulation pump, and multiple pieces of the above four devices are combined as necessary to perform the required air conditioning or heat storage. Heat storage air conditioning system combined with heating.