JPH04292720A - Heat pump package air-conditioner jointly used with radiation panel and heat recovery type air-conditioning equipment - Google Patents

Abstract

PURPOSE:To perform effective air-conditioning of a room having a space cooled throughout a year and a space in the vicinity of a window cooled during a summer season and heated during a winter season and to achieve saving of energy. CONSTITUTION:A heat pump package air-conditioner used jointly with a radiation panel wherein a heat pump package body 1 is connected to a radiation panel 2 through a refrigerant pipe 3 is installed. Cooling and heating in a position in the vicinity of a window are effected by an air-conditioner, and by cold air from a ceiling chamber, an interior part is cooled throughout a year. In a winter season, heat pump operation is effected without operation of the fan of the heat pump package body 1, warm air discharged by cooling of the interior part is recovered through a heat recovery port 6 and enters the heat pump package body 1. A refrigerant is heated by the heating and the heated refrigerant flows through a refrigerant pipe 3 to a radiation panel 2. This constitution generates a radiant heat from a radiation panel 2 is installed below a window.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner that uses a radiant panel and a heat pump package in combination, and air conditioning equipment for a space consisting of an interior area that is cooled throughout the year and a perimeter area that is air-conditioned and heated.

0002

[Prior Art] In large-scale buildings, zones are divided into a perimeter area, which is the area facing the windows in the air-conditioned room, and an interior area, which is the area facing the windows and away from the walls. Heating and cooling are controlled by separate temperature sensors. The perimeter area is susceptible to external thermal conditions, such as solar radiation in the summer and cold drafts in the winter, so it is cooled in the summer and heated in the winter. On the other hand, in interior areas, heat is generated from human bodies, lighting, OA equipment, etc.
Normally, air conditioning is provided throughout the year. Therefore, in many cases, the interior area is cooled by cold air introduced from under the floor or from the ceiling, while the perimeter area is heated by a fan coil unit placed under the window.

0003

[Problems to be Solved by the Invention] As mentioned above, in winter, the interior is cooled and the perimeter is heated. Therefore, the hot air blown from the fan coil unit placed in the perimeter part and the cold air blown out from the duct in the interior part mix, and the energies of the two cancel each other out, resulting in a large energy loss.

[0004] On the other hand, in winter, for the purpose of energy saving, heat generated by cooling the interior portion is recovered for use in heating the perimeter portion. However, the methods currently in use require large-scale heat recovery equipment that incorporates a building's central heat source system. Therefore, even if energy savings are achieved, costs increase due to low heat recovery efficiency and complicated equipment.

[0005] Furthermore, when heating a perimeter area using a fan coil unit, the warm air rising from the fan coil unit placed under the window and the cold draft falling down the window surface mix and are actually blown into the room. The disadvantage is that the temperature of the hot air near the fan coil unit's outlet is considerably lower than the temperature of the hot air near the outlet of the fan coil unit. Therefore,
The air blows out at a temperature that is much lower than the set temperature and is close to room temperature, making the human body feel cold and often extremely uncomfortable.

As described above, in air-conditioning a space consisting of an interior area that is cooled throughout the year and a perimeter area that is cooled and heated, it is possible to improve the thermal environment of the perimeter area and to use energy by mixing hot air and cold air. The challenge was to eliminate losses and reduce the cost of heat recovery methods.

[0007]

[Means for Solving the Problems] The present invention is intended to solve these problems, and provides a heat pump package air conditioner combined with a radiation panel, in which the heat pump package main body and the radiation panel are connected by refrigerant piping. . In addition, as air conditioning equipment for spaces consisting of an interior area that is cooled throughout the year and a perimeter area that is air-conditioned and heated, we have developed a heat pump package air conditioner with radiant panels that consists of a heat pump package body and a radiant panel that is connected to the heat pump package body through refrigerant piping. To provide a heat recovery type air conditioning equipment, characterized in that it is composed of a heat recovery port and a heat recovery port provided in the interior part. In this facility, waste heat from interior cooling recovered from the heat recovery port is used as a heat source for perimeter heating.

[0008] The heat pump package main body may be either a separate type that is divided into an outdoor unit and an indoor unit like a normal heat pump package air conditioner, or an integrated type that is installed by integrating an outdoor unit and an indoor unit. An integrated type is preferable for installation on the middle floors of high-rise buildings. A radiant panel is installed, for example, under a window in the perimeter section, and the heat pump package body is either built into the ceiling as a cassette type or concealed type, or placed on the floor, and the two are connected with refrigerant piping. Therefore, it is possible to connect one heat pump package main body and a plurality of radiation panels with refrigerant piping.

[0009]

[Operation] Cooling operation of the air conditioner of the present invention is performed by blowing out cold air and sucking indoor exhaust air by operating a fan in the heat pump package body, as in a normal heat pump package air conditioner. Heating operation is performed by radiating heat from a radiant panel connected to the main body via refrigerant piping without operating the fan. As the refrigerant, a normal refrigerant (liquid or gas) for heat pump package air conditioners is used, and the material of the piping is determined by the refrigerant used. In the heat recovery air conditioning system of the present invention described below, exhaust heat from interior cooling is recovered and used as a heat source for warming this refrigerant. In addition, an auxiliary heater can be built into the radiation panel, and is activated when starting up in the morning or when defrosting the outdoor unit.

On the other hand, the heat recovery type air conditioner of the present invention recovers waste heat from the interior area that is cooled throughout the year and uses it as a heat source when heating the perimeter area using the heat pump package air conditioner combined with the radiation panel. It is something to be used.

[0011] This heat recovery type air conditioner can be applied to both cases where the interior is cooled by introducing cold air from under the floor or by introducing cold air from the ceiling. Taking the case of introducing cold air from the ceiling as an example, the cold air from the ceiling is usually introduced into the room from an outlet provided on the ceiling surface, using the ceiling as a chamber or a duct provided in the ceiling. In this case, return air from the room is returned to the air conditioner using the ceiling as a chamber or through a duct provided in the ceiling. In this equipment, a heat recovery port is installed on the ceiling surface of the interior section, and warm return air is recovered from there and introduced into the heat pump package body when heating the perimeter section. Then, when heating the perimeter area, the heat pump is operated with the fan in the heat pump package itself stopped, the refrigerant is warmed by the heat of the collected return air, and the warmed refrigerant is routed through the piping to the radiant panel. As a result, warm air from cooling the interior is recovered and becomes a heat source for heating the perimeter. Furthermore, heating of the perimeter area is achieved by radiant heat from the radiant panel and heat radiation by natural convection. In addition, switching of the heat source air intake in conjunction with switching between cooling operation and heating operation of the perimeter air conditioner is performed by switching a damper built into the heat pump package body or externally connected.

0012

[Examples] The present invention will be explained in detail below with reference to Examples. Figure 1
The air conditioning equipment shown in ~4 is an example in which the heat recovery type air conditioning equipment of the present invention is installed in a space where the interior area is cooled annually by taking in cold air using the ceiling as a chamber, and the perimeter area is heated and cooled separately. It is.

1 and 2, a heat pump package main body 1 (hereinafter referred to as main body 1) that is integrated with an outdoor unit and an indoor unit is installed on the ceiling, and a radiant panel 2 is installed under a window, and both are connected to each other using a refrigerant. This is an example in which connection is made using piping 3. The method of installing the main body 1 on the ceiling is a ceiling cassette type in FIG. 1 and a ceiling hidden type in FIG. 2. This air conditioning equipment consists of this air conditioner, a heat recovery port 6 connected to the main body 1 by a duct, a blowout port 7 for cooling air entering the ceiling chamber from another air conditioner (not shown), and a blowout port 7 for cooling the interior. It is composed of dampers 8 to 11 that are switched depending on when heating is being performed, an outside air intake 4, and an exhaust port 5.

When cooling the perimeter area in the summer, dampers 8 and 9 are opened and dampers 10 and 11 are closed, the fan of the main body 1 is operated, cold air is blown out from the outlet 12, and indoor circulating air is discharged from the inlet 14. is inhaled. (In the case of Fig. 1, the air outlet and the air inlet are not shown because they are both housed inside.) When heating the perimeter area in winter, dampers 8 and 9 are closed and dampers 10 and 11 are opened. Operate the heat pump without operating the fan. As a result, the warm air discharged from the interior cooling system is recovered by the heat recovery port 6 installed in the ceiling, enters the main body 1 and warms the refrigerant, and the warmed refrigerant passes through the piping 3 and enters the radiant panel 2. to go into. Then, heat radiation from the heated radiation panel 2 and heat radiation due to natural convection occur.

FIGS. 3 and 4 show an example in which a plurality of radiation panels 2 installed under a window and one main body 1 are connected by refrigerant pipes 3 that branch out in front of each radiation panel. The main body 1 is installed on the ceiling in FIG. 3 and on the floor in FIG. 4. A duct 13 is arranged from the main body 1 to a plurality of air outlets 12, and the perimeter portion is heated by radiation heat from a plurality of radiation panels 2 installed under the window and heat radiation by natural convection. Other configurations and operations are similar to those of the equipment shown in FIGS. 1 and 2. This air conditioner is installed in a room with a large window or many windows.

[0016]

As described above, the heat pump package air conditioner combined with a radiant panel of the present invention increases the sensible temperature by radiating heat from the radiant panel, eliminates cold drafts on the window surface by natural convection, and improves the temperature of the surrounding area. to make the thermal environment comfortable. In addition, for controlling the thermal environment,
By adding radiation field control to conventional temperature and humidity control, more accurate thermal environment control is possible in combination with the PMV sensor and SET sensor.

On the other hand, if the heat pump package main body of the present invention is installed on the ceiling, only the radiation panel needs to be placed under the window, so it does not require a large space like a fan coil unit, increasing the effective indoor area. do. Similarly,
By installing the main unit on the ceiling, the cooling coil is located within the ceiling, which is convenient because the route for drain processing piping during cooling can be deployed within the ceiling.

[0018] Furthermore, by connecting a plurality of radiation panels to one heat pump package main body through refrigerant piping, it is possible to effectively air-condition a room having a large window or a large number of windows.

Furthermore, according to the heat recovery type air conditioner of the present invention, in winter, the cold air blown into the interior portion and the warm air blown into the perimeter portion do not mix, so that no large energy loss occurs. In addition, this equipment can use the local heat recovery method, which recovers the generated heat close to the location where it is generated and uses the recovered heat in a nearby location, resulting in high heat recovery efficiency and energy savings.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the heat recovery type air conditioning equipment of the present invention.
FIG.

FIG. 2 shows an embodiment of the heat recovery type air conditioning equipment of the present invention.
FIG.

FIG. 3 shows an embodiment of the heat recovery type air conditioning equipment of the present invention.
FIG.

FIG. 4 shows an embodiment of the heat recovery type air conditioning equipment of the present invention.
FIG.

[Explanation of symbols]

1 Heat pump package body 2 Radiation panel 3 Refrigerant piping 6 Heat recovery port

Claims (2)

[Claims] 1. A heat pump package air conditioner combined with a radiation panel, comprising a heat pump package body and a radiation panel connected to the heat pump package body through refrigerant piping. Claim 2: An air conditioning system for a space consisting of an interior area that is cooled throughout the year and a perimeter area that is air-conditioned and heated, the air conditioning equipment comprising a heat pump package body and a radiant panel connected to the heat pump package body by refrigerant piping. A heat recovery air conditioning system comprising a heat pump package air conditioner combined with a radiation panel and a heat recovery port provided in the interior section.