JPS6099956A - Solar heat collector and solar heat utilizing equipment utilizing it - Google Patents

Abstract

PURPOSE:To increase heat capacity capable of accumulating heat by a method wherein the heat accumulating section of the solar heat collector is filled with heat accumulating material and a hot-water pipe, which takes out hot-water, is attached to the heat accumulating section. CONSTITUTION:Liquid heat medium 10, sealed into a heat pipe 2 and being reserved in a heat collecting section C, is evaporated by the solar heat and ascends through the inside of the heat pipe 2, thereafter, passes through the intermediate heat collecting section B and arrives at the heat accumulating section A. The whole surface of the heat accumulating section A is surrounded by the heat accumulating material 3, therefore, the evaporated heat medium 10 is cooled since the holding heat evergy thereof is deprived by the heat accumulating material 3, the condensed and liquefied heat medium 10 returns to the heat collecting section C through the heat collecting section B along the lower surface of the heat pipe 2, then, it is heated and evaporated again by the solar beams L and reciprocates between the heat collecting section C of the heat pipe 2 and the heat accumulating section A. The hot-water pipe 6 is passed through the heat accumulating material 3, loaded into the heat accumulating section 7, except the heat accumulating section A of the heat pipe 2, therefore, when low-temperature water is supplied into the hot-water pipe 6, the low-temperature water is supplied with a heat energy from the heat accumulating material 3 to heat it to high-temperature hot-water and the high- temperature water is consumed at a load side such as the supply of hot-water, bath water, room heating water or the like.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a solar heat collector (heat collection panel for solar heat utilization equipment) that grows a heat storage part charged with a heat storage material. #
This invention relates to solar heat utilization equipment (solar system) that increases the amount of heat that can be generated.

[Background of the invention and description of prior art]

Solar heat utilization equipment (solar system) consists of a solar heat collector (heat collection panel), a heat storage tank, a group of pipes connecting these, and a group of pipes stored in the heat storage tank. In this solar system, low-temperature water extracted from the lower layer of the thermal storage tank is sent to a solar collector, where it is heated by solar heat in a heat pipe. This highly wet water is stored in the upper part of the heat storage tank, and is further stored as #l hot water.
The highly wet water stored in the tank is used for purposes such as heating, heating, or bathing.However, in this type of solar system, the solar heat collector is not exposed to sunlight at night during winter. In addition, the low wetness water in the heat pipe is cooled by the outside air below 0℃ and freezes, which damages the heat pipe and eventually damages the solar heat collector.For this reason, this type of solar system During the winter, at night or when there was no sunlight, it was essential to drain water from the collectors of heat and heat.

However, people often forget to drain the solar collector, which often results in damage to the solar collector. rIII of such solar collectors
! In order to prevent damage, two people put an antifreeze heat medium in the heat pipe of the solar heat collector, seal the heat pipe, place one end on the heat collection part of the solar heat collector, and place the other end to store heat. It was devised to provide a tank, turn the water in this heat storage tank into hot water, and store the hot water. This type of thick 11jiM collector will not freeze even if the outside air temperature drops below 0℃ because the heat medium in the heat pipe is non-freezing, and the heat storage tank is made of heat insulating material. Because it is surrounded by a large amount of hot water and stores a large amount of hot water, it is difficult to freeze, and even if it does freeze, the surrounding area is made of strong material, so the solar heat collector is protected. It cannot be damaged. For this reason, this type of solar heat collector has the advantage that there is no risk of damage even if the temperature drops below 0.6 CIJ, but because of the heat storage tank that stores a large amount of hot water, the overall weight of the solar heat collector becomes excessive, which often causes problems such as damage to roof tiles on which solar heat collectors are installed and roof leaks.

In order to overcome these difficulties, the present inventor attempted to downsize and lighten the heat storage tank of this type of collector, that is, a collector with a heat storage tank, but in this level of attempt, the heat storage tank Since the amount of heat that can be stored is reduced, it is necessary to install another heat storage tank in the solar system in addition to the collector in order to maintain the amount of heat that can be stored in the solar system. However, this type of solar system has the disadvantage that the amount of heat that can be stored in the collector heat storage tank is too small compared to the other heat storage tank, making its operation cumbersome. Therefore, in a collector having a heat pipe and a heat storage tank filled with an antifreeze heat medium, the present inventor developed a 4\ type heat storage tank without reducing the amount of heat that can be stored in the heat storage tank of the collector. The present invention was devised with the intention of reducing the weight. In the present invention, by charging a heat storage material with a heat capacity 10 times that of water into the heat storage tank, the amount of heat that can be stored in the heat storage tank can be reduced even if the heat storage tank is downsized. do not have.

A heat storage material is a feather that stores thermal energy inside a substance by utilizing the absorption and release of thermal energy corresponding to the latent heat of fusion caused by the phase transformation between solid and liquid water-containing crystals. The temperature of the thermal energy stored in the heat storage material corresponds to the melting point of the heat storage material and is a temperature specific to the material, so this temperature is referred to as the "heat storage temperature" of the heat storage material. As mentioned above, the thermal energy at the "thermal storage temperature" of the heat storage material corresponds to the latent heat of fusion due to phase transformation in the heat storage part, which is more than 10 times the specific heat of water, so heat is stored in the heat storage tank of the solar heat utilization equipment. When charging material, 10% compared to unit volume
Double. As a result, if the same amount of thermal energy is stored, the volume and weight of the heat storage tank can be reduced to 1/10 when using a heat storage material.

[Object of the invention and summary of the invention]

An object of the present invention is to provide a solar heat collector (heat collection panel) that is small and lightweight, can store a large amount of heat therein, and is not damaged by freezing of water.

Another object of the present invention is to provide solar heat utilization equipment that is easy to use and that can store a large amount of heat.
solar system).

The present invention provides a solar heat collector for solar heat utilization equipment consisting of a solar heat collection part, a heat storage part, and a heat pipe sealed with an antifreeze heat medium, including charging a heat storage material to the heat storage part, and charging the heat storage material to the heat storage part. A solar heat collector is characterized in that a hot water pipe is attached to take out hot water, and one of the crystal decoys of the present invention is a solar heat collector, a heat storage tank, a group of pipes connecting these, and a solar heat collector that is stored in the heat storage tank. In solar heat utilization equipment consisting of a group of piping that uses hot water,
Solar heat utilization characterized in that the solar heat collector consists of a solar heat collection part, a heat storage part into which a heat storage material is inserted, a heat storage part through which a hot water pipe is passed, and a heat pipe in which an antifreeze heat medium is sealed. It is a facility (toolage system).

[Detailed description of the invention]

FIG. 1 shows two solar heat collectors 1 of the present invention arranged in parallel, FIG. 2 is a longitudinal sectional view of the solar heat collector 1 of the present invention, and FIG. 3 shows a solar heat collector 1 of the present invention. +1&! FIG. 2 is a plan view with a part of the heat collector 1 cut away to reveal the state of the internal heat pipe and heat storage portion 7. FIG.

In Figures 2 and 3, 1 is a heat storage type collector;
The heat storage part A at one end is inserted into the heat storage material 3 charged into the heat storage part 7, and the heat storage part B at the (+I+ end) and the heat storage material placed under the cfJS transparent plate 5 The pipe, 4 is a heat insulating material that covers the side and lower surface of the collector 1 and the peripheral wall of the heat storage part 7, and 6 is a hot water pipe that penetrates the heat storage part 7.The inside of the heat pipe 2 is a vacuum, and a heat medium is placed in it. IO is encapsulated and sealed.

Solar rays are a heat storage type collector! When it hits the transparent plate 5, the sunlight passes through the transparent plate 5 and heats the heat collecting parts B and C of the heat pipe 2. By this heating, the liquid heat medium lO sealed in the heat pipe 2 and stored in the heat collecting part C is vaporized, rises inside the heat pipe 2, passes through the intermediate heat collecting part B, and then passes through the heat collecting part C. However, since the entire surface of the heat storage section A is surrounded by the heat storage material 3, the vaporized heat medium 1
0 is cooled by losing its thermal energy to the heat storage material 3, thereby condensing and liquefying, and the liquefied heat medium 12 travels along the lower surface of the heat pipe 2, passes through the heat collecting part B, and collects heat. Returning to part C, sunlight f! It is heated by L and vaporized, and reciprocates between the heat collecting part C and the heat storage part A of the heat pipe 2. Thermal energy of sunlight is stored in the heat storage material 3 through the reciprocation between the heat collection section C and the heat storage section A, which involves the vaporization and liquefaction of the heat medium IO. In addition to the heat storage section A of the heat pipe 2, a hot water pipe 6 passes through the heat storage material 3 charged into the heat storage section 7. When low-temperature water is supplied to the hot water pipe 6, the low wet water is stored as heat. It is heated by receiving thermal energy from the material 3, becomes high-temperature water, and heat storage 1f1 in Fig. 6
20 or consumed on the load side, such as hot water, bath water or heating water.

Generally, the thermal conductivity of heat storage materials is not very good. For this purpose, the hot water pipe 6 passing through the heat storage part 7 of the solar heat collector 1 is fitted with large fins 8 or 9 that reach every corner of the heat storage material 3 as shown in FIGS. 4 and 5. is preferred. In addition, since the heat storage part A of the heat pipe 2 is inserted into the heat storage material 3 charged into the heat storage part 7 of the collector 1, the heat storage part A also reaches every corner of the heat storage material 3 similar to the hot water pipe 6. It is preferable to attach large fins 8 or 9 that span the length, thereby efficiently supplying heat to the heat storage material 3.

The heat storage material charged into the heat storage part 7 of the heat storage type collector is 50
It is preferable that the heat storage temperature is raised to -60'C. Since the collector of solar heat is heated by the sun's rays, it is not preferable to use a heat storage material 3 with a high heat storage temperature, such as a temperature of 100 ° C. or more, in the heat storage part 7, and the heat storage material 3 is supplied by the hot water pipe 6. From the viewpoint of the use of hot water on the load side, it is also not preferable to use a heat storage material 3 having a heat storage temperature with low humidity, such as a temperature of 30 to 40° C. or less, in the heat storage portion 7.

FIG. 6 shows an example of using the heat storage type collector 1 in combination with a heat storage tank, where 20 is a heat storage tank, 21 is a heat storage tank 20
A low-temperature water supply pipe that supplies low-temperature water stored at the bottom of the collector 1 to the heat storage type collector 1; 22 is a pump that supplies hot water; 23
24 is a high-wet water return pipe that returns the high-temperature water wetted by the heat storage type collector 1 to the heat storage tank 20, and 24 is a high-wet water return pipe that returns the high-temperature water wetted by the heat storage type collector 1 to the heat storage tank 20; 25 is a water supply pipe for barging water consumed on the load side, and 26.2
7 and 28 are valves for the low-temperature water supply pipe 21, the high-temperature water supply pipe 24, and the water supply port 25, respectively. The water replenishment pipe 25 enters the upper part of the heat storage tank 20, but there is another pipe (not shown) inside the heat storage tank 20 that leads the replenishment water to the bottom of the heat storage tank 20. Water is this W
The water is supplied to the lower part of the W heat tank 20 through the water supply pipe 25, thereby preventing the water in the heat storage tank 20 from flowing backward from the water supply pipe 25.

When low-temperature water is sent from the bottom of the heat storage tank 20 by the pump 22 through the low-humidity water supply pipe 21 to the heat storage part 7 of the heat storage type collector 1, the low-temperature water absorbs thermal energy from the heat storage material 3 therein. The high-temperature water is turned into high-temperature water, and is returned to the upper part of the heat storage tank 20 through the high-temperature water return pipe 23. In normal cases, the humidity of high temperature water is approximately equal to the heat storage temperature of the heat storage material 3, and the specific gravity of high salt water is smaller than the specific gravity of low temperature water, so no convection occurs in the heat storage tank 20.
There is a layer of 68 water at the bottom and a layer of hot water above it, both of which do not mix except by diffusion to form 2N.

When high-temperature water is used on the load side, the high-temperature water is taken out from the upper layer of the heat storage tank 20, and the low-temperature water obtained by cooling the i wet water on the MJ water supply or the Q load side is returned to the lower layer of the heat storage tank 20. , low temperature water is further supplied from the lower layer to the low temperature water supply pipe 21
The high-temperature water is taken out through the heat storage type collector 1 and becomes highly wet water, and this high-temperature water is returned to the upper layer of the heat storage tank 20 through the high-temperature water return pipe 23. stored.

[Effects of the Invention] The solar heat collector 1 of the present invention has a heat storage material 3 in its heat storage portion 7 that has a heat capacity 10 times that of water, so even though the total weight is not so large, The advantage is that the amount of thermal energy that can be stored is about 10 times greater. In addition, since the solar heat collector 1 charged with the heat storage material 3 is combined with the solar system having the heat storage tank 20, the amount of thermal energy that can be stored in the solar system is equal to the amount of heat that can be stored in the heat storage tank. The amount of thermal energy that can be stored in the heat storage material 3 in the solar collector l is added to the amount of energy, so the amount of thermal energy that can be KMed during the solar system is twice that of the conventional one. Since they are growing close together, they have the advantage of being able to efficiently utilize the thermal energy in the sun's rays.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the solar heat collector of the present invention, FIG. 2 is a longitudinal sectional view of the solar heat collector of the present invention, FIG. 3 is a partially cutaway plan view of the solar heat collector of the present invention, and FIG. 4 is a perspective view of the solar heat collector of the present invention. 5 is a perspective view of a finned hot water pipe in a solar collector of the present invention, FIG. 5 is a perspective view of another type of finned hot water pipe in a solar collector of the present invention, and FIG. , is a side view of solar heat utilization equipment using the solar heat collector of the present invention. l Heat storage type collector 20 Heat storage tank 2 Heat pipe 21 Low temperature water supply pipe 3 Heat storage material 2
2 Pump 4 Insulating material 23 High temperature water return pipe 5 Transparent plate 24 High temperature water supply pipe 6 Hot water pipe 25 Water supply pipe 71F heating section 26 Valve 8 Fin 27 Valve 9 Fin 28 Valve 10 Heat medium AM Netsuto 12 Liquefied heat medium B Heat collection section C Heat collection section Applicant Daiwa ngyo Co., Ltd. Agent Patent attorney Tsu 1) Akira

Claims (2)

[Claims] (1) In the solar heat collector of solar heat utilization equipment, which consists of a solar heat collection part, a heat storage part, and a heat pipe sealed with an antifreeze heat medium, a heat storage material is charged into the storage part, and a hot water A solar heat collector characterized in that a hot water pipe is attached to take out the heat. (2) In a solar heat utilization facility consisting of a solar heat collector, a heat storage tank, a group of pipes connecting these, and a group of pipes that use hot water stored in the hot water tank, the solar heat collector, the evening,
A solar heat utilization facility characterized by comprising a solar heat collection part, a heat storage part into which a heat storage material is inserted and a hot water pipe is passed through the heat storage part, and a heat pipe in which an antifreeze heat medium is sealed.