JPS58148371A - Refrigerator utilizing solar heat - 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] [Technical Field of the Invention] The present invention relates to a refrigerant that is adsorbed to a solid adsorbent by acquiring solar heat; This invention relates to a solar thermal refrigeration system that can evaporate and perform a freezing action using the latent heat of evaporation.

[Technical background of the invention and its problems 3 A commonly used refrigeration system regenerates a refrigerant, such as fluorocarbon gas, in the order of compression, compression, expansion, and evaporation, thereby forming a so-called refrigeration system.

The compressor that performs the compression action is integrally equipped with an electric motor section and is driven by electric energy. For this reason, the consumption of the above-mentioned electrical energy becomes large, especially during the summer, and has reached a point where it affects the electric power situation. Therefore, recently there has been a lot of research and development into using other power sources to perform the compression action. For example, there is a means of converting solar energy into DFT electric energy using a photoelectric solar cell, or a means of converting solar energy into mechanical energy such as a Rankine cycle engine, and driving a compressor with the mechanical energy. Scold K These are
Without advanced energy compression technology or complex solar tracking technology, sufficient effects cannot be obtained, and it will take time to achieve high efficiency.

In addition, the compressor itself is a complex mechanism and its manufacturing cost is high. Various efforts have been made to improve the compression ratio, but the mechanism for adiabatic expansion of the refrigerant is quickly reaching its limit. Accurate matching [needs to be done and takes time to adjust. Over long-term use, the gas becomes insufficient and needs to be replenished as appropriate, which requires time and effort for maintenance.

Since there are various other problems, the refrigeration cycle itself has been reviewed, and there is a demand for alternative refrigeration means.

Recently, zeolite, a type of solid adsorbent, has attracted attention in the United States, and refrigeration experiments using it have begun to be conducted. Zeolite has the property of being able to adsorb large amounts of cooling gases such as water vapor, ammonia, carbon dioxide, and 7 Leones. However, since the heat of vaporization of water is p larger than that of other general gases, the combination of zeolite and water is the most efficient. A refrigeration system using zeolite (zeolite) K uses naturally produced carbonate or clinobutyl lye (zeolite) 1% as a solid adsorbent and water vapor as the refrigerant. In other words, the zeolite absorbs solar heat and desorbs the adsorbed water.The water is led to a condenser where it condenses and liquefies, and is stored as water. During the night, when the zeolite is unable to obtain solar heat and cools down, it begins to adsorb water. The water evaporates, turns into water vapor, and is absorbed by the zeolite.

As it evaporates, it takes away the latent heat of vaporization from the surrounding area and obtains a freezing effect. In this case, the cooling effect is possible only during the time when solar heat t cannot be obtained, but by adding a cold storage tank, for example, it is possible to cool the area.

Therefore, complicated compression mechanisms such as refrigeration cycles,
Subtle Ma, Chinda [There is no need to take any steps, there is no need for a power source, the configuration is extremely simple, and the maintenance is hassle-free.
It has the advantage of low running costs and can be provided at a low price.

In this way, it is possible to obtain a cooling effect by using a system, but it is still at the research stage and no concrete configuration suitable for use in our country's homes has yet been shown, and its commercialization is awaited.

[Purpose of departure]

The present invention aims to provide a single-wheel AT using solar heat, which is inexpensive, has low running costs, and has an efficient refrigeration effect.

[Summary of the invention]

The present invention accommodates a cylinder filled with a solid adsorbent that receives solar heat in a heat collection housing, communicates with the solid adsorption cylinder and a refrigerant pipe [via a condenser and an evaporator], and connects the heat collection housing with the cylinder filled with a solid adsorbent. A solid adsorbent-filled cylinder is arranged at an angle and is installed in a direction perpendicular to this inclination.

[1! EMBODIMENT OF THE INVENTION] Hereinafter, one embodiment of the present invention will be described based on the drawings. Figures 1 to 3 show a solar thermal refrigeration system [shown here, 1 is a heat collecting casing, which has an upper surface (opening 1i) covered with a tempered glass plate 2 and a weather-resistant synthetic film 1 such as a laminate film. It is a rectangular thin box-shaped body that is closed by overlapping and t.

Glass wool 4, which is a heat insulating material, is laid on the FiL surface inside this, and heat insulating materials 5, 5, such as glass wool in wood, are provided along both sides in the longitudinal direction. A heat collecting duct plate 1 having a corrugated cross-section in a direction perpendicular to the longitudinal direction is provided on the glass wool 4 via a glass mat # which is a heat insulating material. The surface of this heat collection duct plate 10 is subjected to a heat treatment that falls under Selection 1 in order to improve its solar heat absorption efficiency. Both ends of the heat collecting casing 1 in the longitudinal direction facing the heat collecting duct plate 1 are open, and a plurality of OII ports 8a such as 1IIkLl pass along the longitudinal direction of the heat collecting casing 1. There are multiple 0Fj on the 0 heat collecting plate r that is designed to
A-body 1 material-filled cylinder I... (hereinafter referred to as the filled cylinder)
is installed in a direction perpendicular to the longitudinal direction. The filling cylinder 8 is a glass tube or a metal tube whose one end is closed.
1. The inner space S is filled with zeolite particles, which are about 1-6 m+/corner φ0ij, and are a single-body adsorbent. The tip is open and the filter 10 is fitted. The closing side end of each filling cylinder is supported by a curtain heat casing IK in front of the heat insulating material S via a support metal fitting JJI, and the end part is supported by a curtain heat casing IK provided along the longitudinal direction. Pass. A cooling protection pipe IJ extending outside the heat collecting housing 10 is connected to the bottom surface of one end of the chamber 110. The refrigerant pipe 13 extends in the longitudinal direction on the outer bottom surface of the heat collecting case 1, and a condenser 15 having a large number of fins 14 with narrow gaps therein is provided there. Further, the refrigerant pipe 11 is bent downward and communicates with the evaporator 16. This evaporator 16 is a closed container whose entire circumferential surface is covered with a heat insulating material, and a coil-shaped heat exchanger 17 is housed inside. Then, the filling cylinder 8 and the chamber 12
, the refrigerant pipe 13, the compressor 15, and the evaporator 16d are each connected in an airtight manner, and their interiors are maintained in a vacuum. Note that the condenser 15 is surrounded by a wind guide plate JJIK attached to the bottom surface of the heat collecting housing 1. The baffle plate 18 is provided along the longitudinal direction of the heat collector 1, which is the axial direction of the condenser 1j, and a fitting 19 for fixing the evaporator 16 is provided on the lower surface thereof. Therefore, the heat collection case 1, the condenser 15, and the evaporator 16 are integrated into one unit.

For example, I! Used as a cooling/stem as shown in Figure 4. In other words, a house shop SXO K, multiple devices S...
Place. In other words, the longitudinal direction of the heat collecting casing 1 is aligned with the slope of the roof 20, and the end faces are brought into close contact so that the openings 8m communicate with each other. By arranging the longitudinal direction of the heat collecting housing 1 along the slope, each filling cylinder 8 is oriented in a direction perpendicular to the slope. Since each device iS has a condenser IJ and an evaporator 16 integrated into one unit, they protrude into the roof 20. Installation is very easy. The heat exchanger 11 in each evaporator 16... is connected to the piping pt.
- It is best to connect the cold storage tank 2 and the circulation ponder 22 in series, in parallel or in a reverse return system.
The cold storage tank 21 is connected to the cold storage tank 21 to form a cold storage cycle [#I].
is located in a living room (not shown), and has nine coolers and two circulation ponders.
3 [Communicate via the provided piping] Next, the effect of the above implementation will be explained.

When exposed to sunlight such as during the daytime in summer, the tempered glass plate 2
The filled cylinder I receives sunlight irradiated through the weather-resistant synthetic film j1. The zeolite particles 9 filled in this absorb solar heat, and the adsorbed water is released. This moisture is led to the condenser 15 via the refrigerant pipe JJi, where it exchanges heat with the air flowing through the baffle plate 11f and is condensed and liquefied. The moisture is safely transformed into liquid (water) and collected in the evaporator 15. Since the adsorption efficiency of zeolite particles 9 is high, solar heat [
While the water is being obtained, water tR is continuously released. Therefore, the amount of water in the evaporator IC increases over time.

When sunlight is not irradiated, for example at night, the zeolite particles 9 no longer receive sunlight and water will not be desorbed from now on.On the contrary, due to their nature, they will absorb the water that collects in the evaporator 1i. Become. The water evaporates and is adsorbed by the zeolite particles 9 via the refrigerant pipe IJf. Water is removed by evaporator 16
When evaporating at
Keep temperature below ℃. If the circulation bonder 22 is driven at this time,
The heat exchanger 17 is cooled and stored in the cold storage tank 21 by the gas or liquid sealed therein, such as cold air, cold water, or refrigerant. Circulation index 23f as needed during the day:
This cooling effect can be achieved by circulating cold air through a cooler that is driven and communicated with the cold storage tank 2. This continues while the cold storage vMVi sunlight is not irradiating. If the zeolite particles 9 are irradiated with sunlight again, water will be desorbed from the zeolite particles 9 as described above.

Note that the axial direction of the filling cylinder 8 is aligned with the roof 20 as shown in FIG.
Since the zeolite particles 9 are arranged in parallel in a direction perpendicular to the direction of inclination of the zeolite particles 9, even if the zeolite particles 9 adsorb moisture, the spaces between the particles are clogged so that a space is left at the top.

Therefore, the water adsorption efficiency of the zeolite particles 9 is not impaired.

〔Effect of the invention〕

The present invention communicates a heat collection case housing a solid adsorbent-filled cylinder with a condenser and an evaporator, and places the heat collection case on the roof of a house, for example, in a direction perpendicular to the inclination of the heat collection case. Since the axial direction of the filling cylinder is aligned, it is easy to install, is well suited to the construction situation in Japan, has a simple structure, can be provided with a low acid value, has low running costs, and has high water sorption efficiency as a solid adsorbent. It has a good cooling effect and has the effect of obtaining an effective freezing effect.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, in which Fig. 111 is a partially cutaway plan view of a solar refrigeration system, Fig. 2 is a longitudinal front view thereof, Fig. 3 is a longitudinal sectional side view thereof, and Fig. 4 is a cooling action. The explanatory diagram, FIG. 5, is a longitudinal cross-sectional view of the solid adsorbent-filled cylinder. 1...Solid adsorbent (zeolite) packed cylinder, 1...
Heat collection dense body, IS... Refrigerant pipe, 15... Condenser, 11
···Evaporator. Applicant's representative Patent attorney Takehiko Tsurie Figure 1 Figure 2

Claims (1)

[Scope of Claims] Consisting of a heat collecting casing housing a solid adsorbent-filled cylinder that receives solar heat, and a condenser and an evaporator communicating with the solid adsorbent-filled cylinder via a refrigerant pipe, A solar thermal refrigeration device characterized in that the thermal enclosure [the outer surface of the house 11IK is arranged with an inclination, and the axial direction of the solid adsorbent-filled cylinder is arranged along a direction perpendicular to the inclination of the heat collecting enclosure. .