JP5802118B2 - Building heat utilization structure - Google Patents

Description

  The present invention relates to a heat utilization structure of a building using a floor heating device, and more particularly to a heat utilization structure of a building that can greatly improve comfort and energy saving in a living room.

  2. Description of the Related Art Conventionally, there has been proposed a heat utilization structure for a building that supplies heated air to a living room using heat radiation energy below a floor heating device in an underfloor space (see, for example, Patent Document 1 below). Such a building heat utilization structure can heat the room by using the heat released from the bottom of the floor heating device without using an air conditioner, heater, etc., so that comfort and energy saving in the room can be improved. We expect the effect of improvement.

JP 2007-192542 A

  However, in the building heat utilization structure as described above, since the outside air is directly introduced below the floor heating device in the underfloor space, the air is easily supplied to the living room without being sufficiently warmed, and the comfort in the living room is sufficient. There was a problem that could not be improved.

  In addition, in order to sufficiently warm the air, it is conceivable to continuously operate the floor heating device to increase the heating time or raise the heating temperature. However, since more energy is consumed, the energy saving performance cannot be sufficiently improved. There was also a problem.

  The present invention has been devised in view of the above circumstances, and is a heat source that uses a geothermal heat exchange area for preheating outside air that has entered the underfloor space and heat radiation to the underside of the floor heating device. In addition to introducing a preheated underfloor air into the warming space, and providing an air supply means for supplying air warmed in the warming space to the living room, The main purpose is to provide a heat utilization structure of a building that can greatly improve comfort and energy saving.

  The invention according to claim 1 of the present invention is a heat utilization structure of a building provided with a floor heating device on the floor of the first floor, and the underfloor space partitioned between the foundation and the floor A geothermal heat exchange region is provided in which outside air that has entered the space is preheated by exchanging heat with geothermal heat, and the underfloor space is separated from the floor by an underfloor heat insulating portion disposed below the floor heating device. In addition, a heating space is provided between the floor and the underfloor heat insulating portion to heat the air using heat radiation to the lower side of the floor heating device, and the heating space is provided with the preheated air. While being introduced, it has an air supply means for supplying air warmed in the heating space to the living room.

  Moreover, invention of Claim 2 is the heat utilization structure of the building of Claim 1 in which the said building has the foundation heat insulation structure with which the said foundation was covered with the heat insulating material except the said geothermal exchange area | region.

  According to a third aspect of the present invention, the underfloor heat insulating portion includes a first heat insulating portion disposed below the floor heating device and a second heat insulating member disposed under the floor where the floor heating device is not laid. It is the heat utilization structure of the building of Claim 1 or 2 which has a part.

  According to a fourth aspect of the present invention, the floor heating device is a hot water circulation type in which hot water circulates, and the hot water and the return hot water of the floor heating device pass through the heating space. It is the heat utilization structure of the building as described in any one of.

  The heat utilization structure of a building according to the present invention includes a floor heating device in the floor on the first floor. In the present invention, a geothermal heat exchange region is provided in the underfloor space partitioned between the foundation of the building and the floor to preheat the outside air that has entered the underfloor space by exchanging heat with geothermal heat.

  Further, the underfloor space is provided with an underfloor heat insulating portion disposed below the floor heating device at a distance from the floor, thereby dissipating heat to the lower side of the floor heating device between the floor and the underfloor heat insulating portion. A heating space for warming the air is provided. The warming space has air supply means for supplying the air heated in the warming space to the living room while preheated air is introduced.

  Such a heat utilization structure of a building can efficiently warm the air without releasing heat radiated to the lower side of the floor heating device in the heating space insulated from the geothermal heat exchange region by the underfloor heat insulating portion. Further, in the warming space, the air preheated in the geothermal exchange region is further warmed, so that the temperature of the air can be increased quickly with less energy.

  Therefore, the heat utilization structure of the building can warm the living room without using an air conditioner or heater by supplying air sufficiently warmed in the warming space to the living room. In addition, energy saving can be improved. In addition, since geothermal heat is used for preheating the air, energy saving can be further improved.

It is sectional drawing which shows the heat utilization structure of this embodiment. It is a perspective view which shows the foundation of FIG. 5 is a cross-sectional view showing a heat utilization structure of Comparative Example 1. FIG. It is sectional drawing which shows the heat utilization structure of the comparative example 2.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the building heat utilization structure of the present embodiment (hereinafter, simply referred to as “heat utilization structure”) can be applied to a building B such as a house, for example.

  The building B of the present embodiment is partitioned between a foundation 11 that supports the foundation and walls of the building B, a floor 12 on the first floor supported above the foundation 11, and the foundation 11 and the floor 12. The underfloor space 13 is provided.

  The foundation 11 includes, for example, a cloth foundation 15 that protrudes from the ground G at a small height, and an interstitial concrete 16 disposed in an area surrounded by the cloth foundation 15.

  As shown in FIG. 2, the cloth foundation 15 includes an outer cloth foundation 15 </ b> A disposed on the outer periphery of the building B, and an inner surface 15 </ b> Ai of the outer cloth foundation 15 </ b> A that is arranged vertically and horizontally. And fabric base 15B. Thereby, the underfloor space 13 is divided into a plurality of small spaces 13s by the cloth foundation 15B.

  The outer fabric base 15 </ b> A is provided with an outer opening 15 </ b> Am for allowing the outside air 17 to enter the underfloor space 13. On the other hand, the inner fabric base 15B is provided with an inner opening 15Bm that allows communication between the adjacent small spaces 13s and 13s with the inner fabric foundation 15B interposed therebetween. Thereby, the foundation 11 can distribute | circulate the external air 17 which approached from outer side opening part 15Am to each small space 13s via inner side opening part 15Bm.

  As shown in FIGS. 1 and 2, in the present embodiment, the entire area of the inner side surface 15 </ b> Ai of the outer fabric foundation 15 </ b> A is covered with a heat insulating material 19. Thereby, in the building B, a basic heat insulating structure in which the underfloor space 13 is insulated is formed.

  The heat insulating material 19 has a substantially L-shaped cross section extending in a small length from the outer fabric foundation 15A side to the inner fabric foundation 15B and the soil concrete 16 side, except for the geothermal exchange region 3 described later. Thereby, the heat insulation is effectively improved in the underfloor space 13. In addition, although it does not specifically limit as the heat insulating material 19, It is desirable to use resin materials, such as a polystyrene foam.

  The heat utilization structure of the present embodiment includes the floor heating device 2 disposed on the floor 12 on the first floor of the building B, the geothermal exchange region 3 in which the outside air 17 is preheated by exchanging heat with the geothermal heat 20, and the floor heating device 2. The heating space 4 that warms the air 18 using the heat radiation 14b to the lower side, and the air supply means 5 that supplies the air 18 warmed in the heating space 4 to the living room L are included.

  The floor heating device 2 of the present embodiment is, for example, a hot water circulation type in which hot water 2Aw circulates, a floor pipe 2A that allows the hot water 2Aw to pass through the inside of the floor 12, a heat source 2B that heats the hot water 2Aw, and the heat source A going pipe 2Ca that guides the hot hot water heated in 2B to the floor pipe 2A, and a return pipe 2Cb that guides the hot water that has been radiated 14a to the floor 12 and has returned to the heat source 2B.

  The geothermal exchange region 3 is formed in a region where the heat insulating material 19 is not arranged in each small space 13 s of the underfloor space 13. In such a geothermal exchange region 3, the outside air 17 that has entered each small space 13 s can be preheated by exchanging heat with the geothermal heat 20 transmitted through the soil concrete 16.

  Furthermore, in this embodiment, since the building B has a basic heat insulation structure, the geothermal exchange region 3 can efficiently and surely preheat the outside air 17 without being affected by the outdoor temperature.

  The warming space 4 is divided into a floor 12 and an underfloor heat insulating portion 6 by a plate-like underfloor heat insulating portion 6 arranged at a distance from the floor 12 below the floor heating device 2 in the underfloor space 13. Formed. Further, the heating space 4 is provided with an opening 4m through which the air 18 preheated in the geothermal exchange region 3 enters.

  As the underfloor heat insulating part 6, for example, a resin material such as polystyrene foam or a sheet-like vacuum heat insulating material is preferably used.

  Since such a warming space 4 is insulated from the geothermal exchange region 3 by the underfloor heat insulating section 6, the air 18 in the warming space 4 is allowed to escape without releasing the heat radiation 14b to the lower side of the floor heating device 2. Can be warmed up efficiently. Furthermore, in the heating space 4, since the air 18 preheated in the geothermal exchange region 3 is warmed, the temperature of the air 18 can be increased quickly with less energy.

  Therefore, the heat utilization structure of the present embodiment supplies the air 18 sufficiently warmed in the warming space 4 to the living room L, thereby minimizing the use of these without using an air conditioner or a heater. The room L can be warmed up early. Therefore, the heat utilization structure can improve comfort and energy saving in the living room L. Moreover, since geothermal heat is used for preheating the air 18, energy saving can be further improved.

  In order to effectively exhibit the above action, it is desirable that the underfloor heat insulating portion 6 covers the entire area below the floor pipe 2A of the floor heating device 2. Thereby, the heating space 4 can warm the air 18 more efficiently by making maximum use of the heat radiation 14b of the hot water 2Aw.

  Furthermore, it is desirable that the outgoing pipe 2Ca and the return pipe 2Cb of the floor heating device 2 are arranged in at least a part of the heating space 4. Thereby, since the going warm water and the return warm water pass through the warming space 4, the air 18 can be heated more efficiently by using the heat radiation by the going warm water and the return warm water.

  In addition, it is desirable that no heat insulating material that contacts the lower surface of the floor 12 on the first floor be disposed in the heating space 4. Thereby, the heating space 4 can raise the heat dissipation rate to the lower side of the floor heating apparatus 2, and can warm the air 18 effectively. In addition, since the air 18 preliminarily heated in the geothermal exchange region 3 enters the heating space 4, a decrease in the temperature of the floor 12 can be suppressed even if the above heat insulating material or the like is not disposed. There is no loss of comfort at L.

  Further, the underfloor heat insulating portion 6 includes a first heat insulating portion 6A disposed below the floor heating device 2 and a second heat insulating portion 6B disposed under the floor 12 where the floor heating device 2 is not laid. It is desirable to have Thereby, the underfloor heat insulation part 6 can supply the air 18 warmed by the 1st heat insulation part side to the 2nd heat insulation part 6B side, for example, the washroom where the floor heating apparatus 2 is not laid. The floor 12 such as T can also be warmed.

  The air supply means 5 includes a first air supply means 5A for supplying the air 18 in the heating space 4 to the first floor living room L1 of the building B, and a second air supply for supplying the air 18 to the second floor living room L2. And means 5B.

  The first air supply means 5A of the present embodiment has an air flow path 21 extending up and down in the partition wall 26 of the first floor living room L1 and communicating with the heating space 4, and the air flow path 21 and the first floor It includes a wall opening 22 that communicates with the living room L1, and a ventilation fan 23 that is provided in the air flow path 21 and blows the air 18 warmed in the heating space 4 to the living room L1 on the first floor.

  Such first air supply means 5 </ b> A can supply the air 18 in the heating space 4 into the first-floor living room L <b> 1 through the air flow path 21 by the ventilation of the ventilation fan 23. Thereby, the living room L1 on the first floor is effectively warmed by the synergistic effect of the air 18 supplied by the first air supply means 5A and the heat radiation 14a by the floor heating device 2.

  Further, the second air supply means 5B of the present embodiment has a first air flow path 31 that extends up and down in the outer wall 29 on the first floor and communicates with the heating space 4, and a partition wall 28 of the living room L2 on the second floor. The second air flow path 32 extending up and down in the interior of the first air flow path 31 (and / or the second air flow path 32), and the air 18 heated in the heating space 4 is Ventilation fan 33A (33B) for blowing air into floor room L2, wall opening 34 communicating second air flow path 32 and second floor room L2, and first air flow path 31 and second air A connecting portion 35 that communicates with the flow path 32 is provided.

  Such a second air supply means 5B causes the air 18 in the heating space 4 to flow through the first air flow path 31, the connecting portion 35, and the second air flow path 32 by the ventilation of the ventilation fan 33 </ b> A (33 </ b> B). Through the room L2 on the second floor. Thereby, the room L2 on the second floor is warmed by the air 18 without using an air conditioner or a heater.

  Moreover, in this embodiment, since the partition wall 26 and the outer wall 29 which the said air 18 passes are arrange | positioned at the both sides of the bathroom undressing place T where the floor heating apparatus 2 is not laid, this bathroom undressing room T is warmed. Can do.

  Note that the ventilation fan 33 </ b> A of the second air supply means 5 </ b> B is desirably disposed on the second heat insulating part 6 </ b> B side of the underfloor heat insulating part 6. Thereby, since the ventilation fan 33A can guide the air 18 heated on the first heat insulating portion 6A side to the second heat insulating portion 6B side, the floor 12 on which the floor heating device 2 is not laid can be guided. It can warm up effectively.

  As mentioned above, although especially preferable embodiment of this invention was explained in full detail, this invention is not limited to embodiment of illustration, It can deform | transform and implement in a various aspect.

A building (Example) having a heat utilization structure having the basic structure shown in FIG. 1 was manufactured and its performance was tested. Furthermore, the building of the above embodiment, the building of the first floor shown in FIG. 3 having a heat utilization structure consisting only of a floor heating device and having no basic heat insulation structure (Comparative Example 1), and FIG. The building (Comparative Example 2) having the heat utilization structure and the heat utilization structure not having the second air supply means was evaluated by simulation using a computer. The conditions for the experiment and simulation are as follows.
・ Experiment:
・ Plan (total floor area: 113.95 m ² , floor area of the first floor room: 30.78 m ² ,
(Installation rate: 47% in the floor heating system of the first floor room)
・ Outside temperature 2 ℃
・ Air supply to the second-floor room by the second air supply means: 100m ³ / hr
·simulation:
・ Plan (total floor area: 113.95 m ² , floor area of the first floor room: 30.78 m ² ,
(Installation rate: 50% in the floor heating system of the first floor room)
Software: AE-Sim / Heat manufactured by Architectural Environment Solutions
・ Meteorological data: outside temperature (Osaka IV region)
・ Air supply amount to the second floor room by the second air supply means in the embodiment: 100 m ³ / hr
-Amount of outside air supplied to the second-floor rooms in Comparative Example 1 and Comparative Example 2: 20 m ³ / hr

<Comfort and energy saving in the room>
The room temperature of each room (the second-floor room, the bathroom dressing room) and the temperature of the floor surface of the bathroom dressing room were measured 4 hours after the start of heating at 2 ° C. in the outside air. Furthermore, the temperature of each room of the Example, Comparative Example 1, and Comparative Example 2 buildings 4 hours after the start of heating at 2 ° C. in the outside air was simulated.
Table 1 shows the heating conditions and the results.

  The heat utilization structure of the embodiment can effectively increase the room temperature of the first floor living room, the second floor living room, and the bathroom undressing room without using an air conditioner, a heater, etc., and comfort and energy saving in the living room. It has been confirmed that it can be greatly improved. It was also confirmed that the experimental results and the simulation results have a high correlation.

2 Floor heating device 3 Heat exchange area 4 Heating space 5 Air supply means

Claims (4)

A heat utilization structure of a building with a floor heating device on the first floor,
In the underfloor space partitioned between the foundation and the floor, a geothermal heat exchange area is provided for preheating by exchanging the outside air that has entered the underfloor space with geothermal heat,
In the underfloor space, an underfloor heat insulating portion disposed below the floor heating device at a distance from the floor, between the floor and the underfloor heat insulating portion, to the lower side of the floor heating device. A heating space is provided to heat the air using heat dissipation,
In the heating space, the preheated air is introduced,
A heat utilization structure for a building, comprising air supply means for supplying air heated in the heating space to a living room.   The building heat utilization structure according to claim 1, wherein the building has a foundation heat insulation structure in which the foundation is covered with a heat insulating material except for the geothermal heat exchange region.   The said underfloor heat insulation part has the 1st heat insulation part distribute | arranged below the said floor heating apparatus, and the 2nd heat insulation part distribute | arranged under the floor where the floor heating apparatus is not laid. The heat utilization structure of the building described.   The building floor heating device according to any one of claims 1 to 3, wherein the floor heating device is a hot water circulation type in which hot water circulates, and the going hot water and the return hot water of the floor heating device pass through the heating space. Construction.

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