JPS5949491A - Heat accumulating device - Google Patents

Abstract

PURPOSE:To reserve solar energy in the day time by utilizing heat accumulating agent and release the reserved energy at night to keep the inside of a housing in a proper temperature by a method wherein a duct-like film, accommodating the latent heat type heat accumulating agent, is arranged so as to be contacted with a ridge and one of the end thereof is connected to a fan provided at the upper part of the housing. CONSTITUTION:The duct-like film 2, provided with vessels accommodating the latent heat type heat accumulating agent at the inside thereof, is arranged so as to be contacted with the ridge and is connected to the fan 7 provided at the upper part of the housing through a duct 6. Air at the upper part in the housing becomes high in the temperature thereof and, therefore, the air, having the highest temperature in the housing, is sent selectively into the duct-like film 2. The air, sent into the duct-like film, effects heat exchange between the latent heat type heat accumulating agent provided in the duct-like film, thereafter, flows into the housing again from one end of the film and thus the heat is accumulated in the heat accumulating agent. Heat exchange is effected at night between the cooled air in the housing and the heat accumulating agent by repeating the operation same as the operation effected in the day time while the cooled air becomes hot and flows into the housing to effect heating.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yellow heat device suitable for heating a facility cultivation building using a latent heat type heat storage agent.

When cultivating in a greenhouse such as a greenhouse, it is necessary to maintain the temperature inside the building at night at an appropriate temperature suitable for growing crops. Additionally, in order to maintain the temperature inside the building at night, it is desirable not to use fuel, etc. from the perspective of energy conservation. For this reason, a method of storing solar energy during the day using a heat storage agent and releasing the stored energy during the night to maintain a suitable temperature inside the building at night has recently attracted attention. In this method, the problem is how to efficiently exchange heat with the heat storage agent. .

The present invention provides a heat storage device using a latent heat type heat storage agent that can store heat by selectively supplying air whose temperature increases during the day in a building. A heat storage device characterized in that a duct-like film having a built-in container is disposed in contact with a ridge, and one end of the duct-like film is connected to a blower installed at the upper part of the facility. It is.

When thermal storage heating is performed using the heat storage device of the present invention, the air in the upper part of the facility becomes high temperature during the day, so the air that is sent into the duct-like film is selectively sent to the highest temperature air in the facility. I'll be concerned. The blown air exchanges heat with the latent heat type heat storage agent contained within the duct-like film, and then flows out from one end of the duct-like film into the FI facility again. By repeating the above operations, heat is stored in the heat storage agent. By repeating the same operations as during the day at night, the cold air inside the facility exchanges heat with the heat storage agent, becoming warm air that flows into the facility and heating the facility.

Latent heat type heat storage agents are advantageous in that they can make the heat storage device more compact than sensible heat type heat storage agents using water or crushed stone. H2 Sodium chromate
Q hydrate (Na2CrO4・10H20), sodium sulfate decahydrate (Na 5o-10H20), tetrasodium carbonate decahydrate (Na2C03” 10H2
C) Sodium hydrogen phosphate dodecahydrate (Na2n
po4-12 h+2o), sodium thiosulfate 5
Hydrate (N a 2 S 203°5H20), Magnesium nitrate filtrate (+xg (No3)2.6H20
), magnesium chloride filtrate (Mgcd2.6H2), calcium chloride hexahydrate (Ca C4.6H20), etc. may be used alone or in combination of two or more.

In addition, various additives such as a melting point regulator and an anti-supercooling agent may be added to these heat storage agents as desired.

Such heat storage agents are sealed in containers of various shapes for easy handling. The shape of the container is not particularly limited, but a flat container is preferred from the standpoint of installation stability. A flat container can be easily obtained, for example, by polymerizing thermoplastic resin films 7 and then melt-polymerizing the surroundings. In view of the stability of the heat storage agent, that is, the prevention of phase separation that occurs when solidification and melting are repeated, the height of the container is preferably approximately 0.5 mm or less.

The container containing the latent heat type heat storage agent is housed inside the duct-like film. The duct-shaped film may be any duct-shaped film made of a thermoplastic resin such as polyolefin such as polyethylene or polypropylene, polyester, polyamide, polyvinyl chloride, or polyvinylidene chloride. Further, a laminate of the above-mentioned thermoplastic resins, a laminate of metal foil, or a laminate of aluminum or the like may be used. A duct-shaped film with a heat storage agent inside is placed in contact with the ridge where cultivated plants are being cultivated, and one end of the film is connected to a blower installed at the top of the facility.

The contents of the present invention will be explained in detail below using the drawings.

FIG. 1 shows an example in which a container 1 containing a latent heat type heat storage agent used in the present invention is folded inside a duct-like film 2. The duct-like film has a zipper 6 to make it easier to put the container 1 inside.
However, for example, Velcro or adhesive tape may be used instead of the zipper. Providing fasteners on the duct-shaped film allows the container 1 to be easily folded inward by opening the fastener, and then returns to the duct-like shape by closing the fastener, streamlining the work for installing the container inside.

FIG. 2 shows a sectional view of a duct-like film 2 in which a container 1 is installed. Since the container is placed in contact with the bottom of the duct-like film, the heat generated from the heat storage agent inside the container is also transferred to the ground side when the duct-like film is not heat insulating.

FIG. 5 shows an example in which the containers 1 are not placed directly inside the tallite-like film, but are placed side by side on a foam heat insulating mat 4 to prevent heat transfer to the ground side.

FIG. 4 shows an example in which a net-like shelf 5 is used instead of a heat insulating mat to prevent heat transfer to the ground side and increase the contact area between the air and the container to improve heat exchange efficiency.

FIG. 5 and FIG. 6 are examples in which the heat storage device of the present invention is installed in a facility. A duct-shaped film 2 containing a container 1 containing a latent heat type heat storage agent described in FIGS. 1 to 4 is connected via a duct 6 to a blower 7 installed in the upper part of the facility. At this time, one end of the duct-shaped film 2 may be directly stretched by the blower 7 and joined. The duct-like film with the container inside is placed in contact with the ridge.

The heat storage device of the present invention is easy to install, can selectively use high-temperature air within the facility during heat storage, and can perform efficient heat storage, and can also exchange heat with the ground as necessary. It also has the characteristic of ensuring soil temperature.

[Brief explanation of the drawing]

1 to 6 show embodiments of the invention. 1...Container with built-in heat storage agent 2...Duct-like film filter...Zipper 4...Insulating mat 5...Mesh shelf 6...Duct 7...Blower applicant Mitsui Petrochemical Industries, Ltd. Agent Kazu Yamaguchi

Claims (2)

[Claims] (1) A duct-like film containing a container containing a latent heat storage agent is placed in contact with the ridge, and one end of the duct-like film is connected to a blower installed at the upper part of the facility. A heat storage device characterized by: (2) The heat storage device according to claim 1, which is formed by joining a blower and a duct-like film via a duct.