JPS591988A - Thin filmy stream heat transmitting device - Google Patents

Abstract

PURPOSE:To increase thermal efficiency by a method wherein a distributed load is applied from the outside of the closed circuit type thin filmy stream heat transmitting device, contacting with a thin plate-like body for a solar heat hot-water supplier or the like, to prevent biased flow of water. CONSTITUTION:A flow path pressing device, constituting a liquid distributor, is pressed linearly or a band-like mode from the outside thereof by a flexible weight, a weight arranged with unit weights in line, an elastic body, a weight in which the elastic body is inserted between the weight and the wall surface of the flow path, or the like and whereby the difference between the sectional thickness of the flow path is decreased and the biased flow of the liquid is reduced. The method of applying the pressure may be discontinuous and the weights may be arranged in a plurality of rows. In the heat receiving body of the solar heat hot-water supplier utilizing a liquid distributor 2 of a caterpillar-like band of steel coated with black color, water is entered from an entrance 24 and is supplied to the upper part of the flow-down type hot-water supplier from a pre-distributor 2 consisting of multi-hole pipes, pipes with slits, overflow dams or the like. Finely distributed water is distributed more uniformly by the liquid distributor 2. Thus, the water on the heat receiving surface 1 flows down to an outflow path 7 without causing overheated part and may be taken out of an outflow port 27 as a hot- water.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention allows a liquid to be flowed onto a solid surface in a thin film flow, and the liquid surface is covered with a thin plate-like material (for example, a thin metal plate, a plastic sheet, a film, a rubber sheet, a composite material thereof, etc.). In a heat transfer device having a channel structure, the purpose is to improve the liquid distribution on the heat transfer surface and easily improve the heat transfer efficiency and heating temperature.

This device is suitable for solar water heating equipment, water heating equipment combined with solar cells, fresh water generation equipment, liquid heating and cooling equipment, heat exchange equipment, condensing equipment, reaction equipment, etc.

Examples of thin film flow heat transfer devices include a closed-flow downstream type solar water heating device and a closed-flow solar water heating device.In closed-flow path devices, there is evaporative heat loss due to the generation of water vapor from the water surface, and this evaporation To prevent heat loss, avoid contact with the water surface and cover it with a glass cover, etc. to reduce the amount of evaporation. It was difficult to get things.

In order to eliminate this difficulty, there are some methods that cover the water surface with a transparent or black thin plate-like material. Examples of this include U.S. Pat.
There is No. 342, but in both cases, a large amount of water is circulated through the flow path, and the piping is thick and a circulation pump needs to be installed, and 7 is also large and consumes a lot of power.

In contrast, by closing the side of the flow path and operating at a small flow rate,
We previously proposed a closed-channel solar water heating system that requires only a small circulation pump and can be omitted if water pressure is available. (JP 56-15534'7) The present invention is an improved version of these, which improves the tolerance of height and unevenness of the surface forming the flow path, reduces liquid flow in the flow path, and improves efficiency. The purpose is to easily raise the heating temperature of the liquid.

While the flow path valve of the conventional liquid distribution reservoir was a rigid rod-shaped object, it is made of flexible weights, unit weights lined up,
By applying linear or band pressure to the channel wall from the outside using an elastic body or an elastic body inserted between a weight and the channel wall surface, the unevenness of the channel cross-sectional thickness can be reduced and liquid flow can be prevented. This is to reduce the

There may be cuts in the way pressure is applied. The allowable gap is determined by the thickness and flexibility of the wall (thin plate-like body) forming the flow path, and the thicker and more rigid the wall, the larger the gap. The same applies to the spacing between points. If this gap is inconvenient, the amount of liquid passing through the flow path in the gap can be reduced by arranging a plurality of rows of weight equivalents.

The weight equivalent may be a thick rubber plate (0.1 mm or more, especially about 1 mm or more) placed in the direction across the flow path, especially in the right angle direction. It does not necessarily have to have a straight edge, and may be shaped like a saw blade, for example.

It may also be a caterpillar-shaped object, such as a watch wristband. The unit plate is 1 inch wide and 0.5 to 10 mm thick.
, a length of 1 to 200 mm is appropriate, depending on the unevenness on the five sides and the rigidity of the thin plate-like material. By placing this, the flow path cross section is controlled and the liquid flow is distributed on the heat receiving body surface.

It can be designed by giving changes within a board or between boards by deformation and distribution.

The lower surface, that is, the contact portion with the channel wall may also be a collection of points, lines, etc., and may not be a flat surface.

Reducing the contact area can save material since higher pressure can be applied with the same weight. For the same reason, the effect will be greater if the plate-shaped part is placed upright or peaked, rather than placed flat. In such a case, in order to distribute the pressure, it is necessary to ensure a degree of freedom in the joints between the unit plates and to not restrict movement to a large extent.

Flexible wires, cables, or chains with weights connected thereto can also be used.

Various shapes of chains can be used, and it is easier to use chains with a large weight, but thin ones can also be used by stringing weights in a row or by threading them in the form of beads.

Although the above is a case in which the unit members are connected, unit members may be arranged partially connected or not connected at all.

For example, one or more rows of tile-like platelets can be placed on the channel wall to serve as a liquid distributor; transverse tiles (or beams) can be placed on the channel wall to prevent misalignment. In place of girders, cables, chains, etc. may be used. Also, supports may be used to prevent the span from sagging. There is no restriction on the shape of the connected unit members, and the shape may be any shape that can distribute the load depending on the wall material, and the members do not need to have the same shape. In addition to squares, they may be triangular, trapezoidal, parallelogram, hexagonal, or circular, and the parts of nuts, washers, etc. may be made of ferromagnetic material and may utilize magnetic force. Further, the contact portion may be adhered to the channel wall or fixed with an adhesive, grease, or the like.

It goes without saying that each of the fixing methods may be used in combination, making it easier to prevent obstacles such as displacement and wrinkles of the channel walls.

Fixing or adhering with an adhesive or the like is advantageous in increasing the heat transfer surface area covered by the liquid distributor according to the present invention and increasing thermal efficiency.

Materials for unit parts include metals, stones, minerals, glass, ceramics,
Examples of metals include carbon, rubber, plastic, cement, gypsum, and composites thereof. Steel is relatively inexpensive and easy to use, and it is appropriate and inexpensive to use galvanized, painted, or other coatings. It is. Alternatively, the unit members may be placed in a bag made of plastic, paper, cloth, etc., or may be used by being connected with tape or the like.

The same applies to other materials.

The color is arbitrary and may be decorated, but if the proportion of the heat transfer surface is large, a color with a high degree of blackness such as black is preferable. It is more preferable if it is selectively absorbing membrane processing or painting.

Positioning tools and supports can be wires, ropes, chains, rods, pipes, or other shaped materials used singly or in combination.The three can be combined into a net to position the liquid distributor or its unit members. , it may be something that can be easily fixed. Fixing can be done at any desired position, but it can also be easily done by inserting unit members into a mesh or frame.

The material is preferably heat resistant, and metals, synthetic or natural polymers, inorganic materials, or composites thereof can be used.

Molded products thereof may also be used.

stomach.

In such a case, a fulcrum or a support surface may be provided, and a spring or resilient porous body (or cushion) may be inserted between the channel wall surface and the channel to pressurize the channel. Pressure may also be applied from both sides in the same way. The opposing surface may be a rigid surface (or line).

Good too. These elastic bodies may be inserted as cushions between a fixed or unidentified but movably supported beam (or stick, rod-like object), unit member as a weight, and the flow path surface. .

Even when fluids such as liquids and powder particles are placed in a flexible tube or bag-like proboscis, external pressure can be applied to the flow path to prevent uneven flow. It can be considered as a simple weight with fluidity and can be used in the same way as the solid weight mentioned above.

The advantage of this fluid weight is that the liquid surface of the weight can be made horizontal, so relatively more pressure can be applied to the four parts of the flow path surface, making it easier to improve the distribution of liquid flow. . Furthermore, since the weight of transporting or carrying the liquid column by setting up the liquid column is reduced if necessary, it is advantageous for weight reduction, simplification, and portability.

The tube or bag may be suitably made of plastic, cloth, or rubber, and a board or frame may be provided with partitions to adjust the shape. be able to.

As described above, it is possible to improve the distribution of liquid flow in the flow path by applying pressure to the flow path, but if a liquid separating device is provided over the entire surface of the flow path, air bubbles (or accumulated gas) will be generated in the flow path. ) is a force that may hinder the discharge of This occurs when the descending liquid and the rising air '□ bubbles are exchanged with each other and the flow is no longer smooth due to pressure on the liquid path, and even if the liquid flow is stopped, heat transfer cannot be improved. Sometimes it doesn't happen. This phenomenon is caused by the structure, material, installation conditions, and operating conditions of the equipment.

In order to eliminate these difficulties, it is necessary to configure the air vent part so that it does not apply pressure, instead of making the sound part where the pressure is applied in a straight line, and by using an insert facing the part so that the liquid does not flow into that part. [Weir] or (and) by winding the pressurizing wire (brake or band) upward in a hook shape, it may be possible to form one part of the weir or to create a bank in the flow direction that is higher at one or more places in the flow path. A protrusion or ``weir'' is provided to provide an air vent to prevent pressure from being applied to this area.

Alternatively, it may be adjusted to apply a relatively small pressure.

It may also be used by supporting the weight of a transparent cover made of glass, glass stick, etc. or its frame with a beam or the like and transmitting it to the liquid distributor.

It is possible to provide not only one row of liquid distributors but also a plurality of rows, and it is even more effective when used in combination with a porous pipe in the inflow section or an overflow weir having a liquid distribution function.

If multiple rows of liquid distributors are installed, the interval is 30~]000mm
8 degrees, especially about 50 to 500 mm, is effective and economical in many cases, but in cases where the unevenness of the surface causes uneven flow of the liquid over the entire surface, or where the accumulation of air bubbles is severe, the light resistance and heat resistance may be reduced. If you want to use a heat-receiving surface with low heat resistance for a solar thermal device or waste heat recovery device, etc., or if you want to add a design to the entire surface of the solar heat-receiving surface, use a plate-like material with good thermal conductivity and heat resistance (on the top surface). It may have unevenness or coloring (8) and may be arranged to have a liquid distribution effect.

The thickness of the plate-shaped object is about 10mm or less, especially 5mmrll or more.
is appropriate.

The reason why it is acceptable to cover the heat transfer surface in this way is because the heat load per unit area of solar water heaters and the like is relatively small, and the heat transfer direction is mainly in the thickness direction. If the contact resistance with the heat transfer surface is sufficiently small, the thermal conductivity is 0.7 kcal/
The heat transfer amount of m-H・0C porcelain tile with thickness 6mm is 110
kcal/H-Oa, and the surface temperature rise is 6°C
It's just a matter of degree. For metal plates of the same weight in the form of tiles, only surface contact resistance is a problem. Needless to say, this resistance can be sufficiently reduced by adhesion or the like.

According to the present invention, the pressure applied to the heat transfer surface channel is 0.01 to 7 cm, or 0.1 to 1, depending on the condition and material of the channel.
~roomAq, especially 0.5 to 50 mm A,q is appropriate. At this level, even if pressure is applied over the entire cross section, the flow path will be opened by hydraulic pressure, and above that, especially 200 mm
If a pressure exceeding mmAq is applied seamlessly, the liquid will accumulate in the flow path, and the pressure of the liquid column will be applied to the flow path wall, causing deformation of the heat receiving element, leakage of joints, etc., which is inconvenient.

Therefore, high pressure should be used for rough distribution of liquid and vertical division of the flow path while creating pressure cuts and securing the flow path, and it is appropriate to use a relatively low pressure for liquid distribution.

The support of large-area plates of lath covers, the distributed support of small-area plates, the support of inserted decorations, etc.) are also used, which helps to save materials and simplify the construction.

Next, the present invention will be explained with reference to the drawings.

Figure 1 shows a plan view of the heat receiver of a solar water heater with a caterpillar-shaped band made of black-painted steel pieces as the liquid distributor 2. good)
J enters from the inlet 24 and is supplied to the upper part of the downstream water heater from the pre-distributor 4, such as a perforated pipe, slit pipe or overflow weir (horizontal flow type, upstream type water heater, heat exchanger, etc.). So,
(Of course it is supplied to each supply end)
“The distributed water is further evenly distributed by a liquid distributor, which is provided depending on the degree of surface topography, resulting uneven flow, presence or absence of partitions in the flow direction, spacing, channel wall material, etc. The liquid distributor of the first stage flows down to the outflow passage 7 without causing an overheating part of the pre-distributor, and the outflow obtained as hot water from the first stage 27 flows down. The path may be a closed flow path that also serves as a heat receiving surface.

Suitably, the heat receiving body is stacked or configured on a plane, an inclined plane, a concave or convex semi-cylindrical surface. A flexible device with thin plates on both sides of the flow path can be used as a solar water heater just by placing it on such a surface. The compatibility can be improved by selecting the size of the unit member of the liquid distributor, the heavy electric current, and the width of the channel section.

FIG. 2 shows a vertical cross section (corresponding to a side view of the A-A cross section in FIG. 1) of a solar water heater in which a heat receiving body is housed in a heat insulating box and a transparent cover 6 is used.

The lower surface 3 of the flow path may be a thin plate-like body.

Thin plate-like bodies can be used as they are by stacking two or more sheets, but those that are constructed into a cylinder or bag-like shape by welding or gluing do not require liquid leakage prevention on the sides, so the structure is simpler. It has the following advantages.

The channel 5 is normally closed in a dry state without a spacer, and the channel opens when water passes through it. Alternatively, it may have a structure provided by a presser bar or the like to prevent water from drifting, or it may be a vertical or horizontal assembly of a plurality of heat receiving bodies.

In such a case, the liquid distributor 2 prevents uneven flow in each channel, and is particularly effective when there are large unevenness in height in the lateral direction with respect to the flow. In the conventional falling film device d, this kind of correspondence is not possible with the pipe or 1. It was a good thing.

Figure 3 corresponds to the cross section (B-B) of Figure 1, and J26 shows the case where the spacer 25 (which may also serve as a flow path section and bubble separator) is provided in the flow path. This is a connecting mechanism for unit members 2, and a part or all of them may be connected together by passing a wire or rod through a hook or ring. Other known coupling means can be used.

FIG. 4 is a side sectional view of an example in which the unit members of the liquid distributor are used in an upright position, in which member 2 is the guide rod 14 and positioning tool 1.
It is movably sandwiched between the heat-receiving surfaces 1 and 3, and presses the flow path 5 through the heat-receiving surface 1, thereby distributing the liquid by applying resistance. Figure 5 is a view of it from the upstream side. In this case, a thin plate of a mold is used, but it can also be in a rectangular shape, or it can be pressed down with a spring or other weight from above the unit member. Alternatively, an elastic material such as a cushion may be attached below the unit member.J 15 is a support fitting for the guide rod.

FIG. 6 is a plan view of a saliva distributor in which steel balls are arranged using a positioning tool 13. Figure 7 also shows a short tube or rod and a ball arranged side by side. When the square pieces are arranged side by side, the plan view appears to be similar to that shown in Figure 1.

If the span of the positioning device 13 is long, a support device 16 may be used.The unit member may have an irregular cross section as shown in Fig. 7.89.In such a unit member, it is self-supporting. Therefore, there is no need to stand it up between the two as shown in Figure 4. 10th
The figure shows an example of two rows of chain-like objects. FIG. 11 shows an example in which two rows of square-shaped boards, tiles, etc. are arranged. FIG. 12 shows a side sectional view thereof.

FIG. 2 is a plan view of the material-applying saliva distributor 2; The presser foot 20 may be a plurality of aggregates that can each move independently,
It has good adaptability to the unevenness of the pigeon house.

FIG. 14 shows its longitudinal section (side view).

FIG. 15 shows a unit member 2 of a liquid distributor in which a rrc transparent heat-retaining cover 6 is attached separately.

This makes effective use of the weight of the accessories and also simplifies assembly and disassembly. There may be a plurality of unit members for one transparent cover such as glass, and in that case, the difference in height can be measured by using a spring, a spring, etc. to measure the pressure distribution.

Figure 16 shows the weight transmission of a presser foot and a kettle using a spring.

, 2 In Fig. 17, the flow path is pressurized from the bottom surface of the flow path by an intangible body 19 to form a liquid distributor 2, which can be used even when a weight cannot be used.

Figure 18 is a cross-sectional view of a liquid distributor in which a box-shaped frame (without a bottom) is filled with a plastic bag filled with water and pressure is applied. Although it is used as a preventive measure, it can be omitted. 28 is a flexible bag (a tubular bag may be used), and 29 is a liquid such as water. Powder particles such as sand (magnetite, glass powder, crushed cement, etc. may also be used) can be used instead of water etc. Figure 19 shows an example of positioning tools and supports configured in a net shape. Alternatively, it can also be constructed from cables. It is convenient when liquid distributors are arranged relatively densely, and is also suitable for portable use.

Any liquid distributor 2 can be used. It is okay to use them in combination.

FIG. 20 shows a case where the arrangement density of the liquid distributors is increased and substantially the entire surface of the heat receiving body is covered.

This is equivalent to using a thin plate material with high areal density, flexibility, and little thermal deformation on the heat receiving surface, and placing porcelain, thin metal plates, tiles, glass pieces, etc., or placing thin plate materials such as films, notebooks, etc. It can be used by pasting it on. It is not necessary to use members of the same size for these, but it is also possible to insert balls or tubular members between them to make their mutual movement smoother, or to change the size, color, etc. and assemble them into a mosaic. You may insert frames etc. at key points.

In this way, the present invention applies liquid to a heat receiving surface or a heat transfer surface by applying a distributed load (but still pressure) from the outside to the thin plate-shaped body constituting the flow path using a movable or easily bendable pressurizing element. Good contact can be made. Therefore, the effective heat transfer area becomes large and overheating does not occur, so thermal efficiency can be increased.

As a heat exchanger, it can be easily used as a heat exchanger by assembling thin plate-like bodies and flowing heating liquid or cooling liquid onto the heat transfer surface.

It can still be installed on walls and used for heating and cooling buildings.

By inserting it into a tank or waterway, or pressing a thin plate against the outer wall of a tank or equipment, the heat transfer surface can be operated as if it were a rigid metal wall, allowing for highly efficient, simple, and inexpensive heating, cooling, and heat recovery. It has the advantage of achieving objectives such as maintaining safety. The use of thin plates and ease of assembly and removal also reduces internal inspection costs.

In addition, when using the outer wall of a tank, etc., it is economical to use a thin 2-splash to distribute the liquid and keep it warm (or cold) at the same time.A heat transfer device for upward flow or horizontal flow of the liquid. When configuring a liquid, it is necessary to aspirate and drain the liquid. This is because the device according to the present invention is strong against external pressure, but due to internal pressure (flow path positive pressure)
This is because they are weak against

Example 1 A solar water heater was constructed by storing a heat receiving body in a black plastic bag (0,025 mm thick) measuring 1 m x 2 m in size on a plywood stand of a heat insulating box measuring m (width) x 2 m (length). And so.

A stainless steel perforated pipe is used to supply water to the upper part, and a black-painted 20 mm square, 1 mm J# steel piece is used as a liquid distributor in combination with a positioning device made of angle steel, as shown in Figure 1. Used side by side.

Water supply amount: 24.3 L/H, Air temperature: 24°C Water inlet temperature: 22°C 1 outlet temperature: 58°C Efficiency: 66% J (Comparative example) In place of the above liquid distributor, use a liquid supply section A film presser made of a chewing tube was placed on the tube. The efficiency was 30% at the same flow rate, and the water temperature remained at 38°C.

Efficiency was not improved even when the film press was increased to three stages.

The reason for this appears to be that the unevenness of the support plate and the slight bend in the steel pipe had a large effect on liquid distribution.

Under the same conditions, the flow rate of the liquid flowing between the two planes is 3
It is known that the power is proportional to Y.

The present invention also has the effect of reducing the variation in spacing. 4 In Embodiment 1, the liquid distributors 2 are placed in the top row in one row, and the operating rate is 7.
% decreased.

Composite magnetite to liquid distributor 2, thickness 2m'm, width 20m
Although a rubber plate of m was used, the same efficiency as in the case of steel pieces was obtained.

The same efficiency as in Example 1 was obtained when a soft polyurethane foam (density 30 kg/m 2 ) having a width of 5 rr+m and a thickness of 1 0 mm was attached to the steel pipe of the control example. This shows the effect of the present invention, which uses an elastic body to pressurize the flow path to function as a liquid distributor.

Example 2 In the heat insulation box of Example 1, o
, 3 mm 1 cup stainless steel plate was used. For the transparent cover, an FF1P transparent film was inserted inside the glass. The air layer thickness is 25mm + 25mm on the transparent thermal cover side
, the backside insulation was 50 mm.

A 0.8 mm thick 60 mm square black painted steel plate was placed on the entire heat receiving surface. Next, I arranged them so that the bottom and top rows did not overlap. (A steel plate with a width of 30 mm and a length of 60 mm is required at the end) Water supply amount 22 L/H, temperature 27°C Water temperature 2
4°C1 outlet l crystallinity 63°CEfficiency is 67%J for the amount of sunlight incident heat (Comparative example) When using the same device with only a steel pipe film holder, the efficiency was 49% and the outlet water temperature was 53°C. Ta.

When arranging the unit parts in this way (it is also possible to arrange them in a planar manner by the length of the strip), fill in the joints with soft (-!, otherwise flexible) joints. thing,
It is made by a combination of one or two or more of the following methods: covering with a string or tape-like material, fitting unit members into a rigid (or flexible) prefabricated frame and arranging them. (Use a rigid frame. In this case, it is preferable to use a rigid frame that has little resistance to movement in the direction perpendicular to the plane between the frame and unit members. It is necessary to make close contact, and if the degree of adhesion is poor, the thermal contact resistance will increase and the thermal efficiency will tend to decrease. (can be determined by calculation taking into account heat transfer resistance) Of course, such a connection can also be applied to a liquid distributor installed in a strip shape. Example 3: 5 mm height difference per 1 m width Assemble a solar water heater using flat plates.

The heat insulation box used was the same as in Example 2, and the heat receiving body was 0.3
mm thickness stress corrosion resistant split stainless steel Q (SUS444)
Two sheets of SUS 3 with a diameter of 0.5 mm are annealed between them.
04 stainless steel wires were inserted parallel to the flow direction at 30 mm intervals, and the upper and lower ends were secured to the same stainless steel wires with a diameter of 3 mm to prevent them from shifting, creating a flow path with a cross section as shown in Figure 3. did.

The liquid distributor unit member has a width of 20 mm and a length of 30 mm, and is shaped so that it has unevenness in the length direction (width direction for the heat receiving body) so as not to cause a cut in the load (FIG. 22).

The heat receiving surface was treated with a selective absorption film.

The sides of the heat receiving body were fastened with gaskets and clips.

Seven stages of liquid distributors were provided at intervals of about 300 mm.

Water supply amount: <lL/H, temperature 26°C water input temperature 2
4°C1 exit gamma degree 54°C Efficiency 75 factor for the amount of solar incident heat.

When the water supply amount was 24.5 L/H and the water inlet temperature was 35°C, the water outlet I phase 1 was 73°C and the thermal efficiency was 7Qchi.

(Comparative example) When the liquid distributor according to the present invention is not provided, the outlet temperatures are 44 and 56°C for the respective conditions, and the efficiency is 51 and 42 degrees. Even if there is a significant height difference or unevenness in the support part where the entire channel can be seen, it may be fixed to the heat receiver structure in which the channel is divided or both by welding, etc. However, the present invention 1 is sufficiently effective with only one side, depending on the conditions. If there is no risk of displacement or deformation, such fixing can be omitted, which has the advantage of being inexpensive to manufacture.

Note that the ends of the stainless steel plate, etc., and the joints in the middle of the flow path may be bent in two directions, tightened with a contact plate, flange, etc., or connected with a seam.

Gaskets, caulking materials, and adhesives can be added to these.

According to the present invention, the liquid can be distributed within the flow path without applying much internal pressure to these joint surfaces, which has the advantage that it is easy to increase the size of the device. , and only liquid distributor 2 is connected to the second
Rearrange the arrangement as shown in Figure 1, and make the protrusion of the flow path weir upstream 20
mm, the width of the air vent was 20 mm, and the inclination angle of the water heater was 3°.

Continuous operation for 4 hours. Conditions such as the amount of solar radiation were the same as in Example 1. The hot water temperature is 556-58°C depending on the sunlight.
It was stable.

(Comparative example) When the water heater of Example] was operated continuously without air venting, the hot water temperature decreased to 52 to 55°C.
Due to the time stop, the operating rate at which air was vented was restored.

As described above, the present invention prevents uneven flow by applying a distributed load from the outside of a closed channel type thin film flow heat transfer device in which at least one side (or a portion thereof) is attached to a thin plate-like body. 3゜This eliminates the overheating part of the heat transfer surface, increasing efficiency, and converting the falling film type solar water heating system, which was previously considered to be inexpensive but low efficiency and low heating temperature, to high efficiency and 60°C.
The above heating is also easy and simple.

It can be used for both horizontal flow and upstream methods.

As the thin plate-like body, in addition to a thin metal plate, transparent or black plastic films, sheets, rubber plates, etc. can be used.

A wide range of materials such as inorganic materials and composite materials can be used, so
It can be easily used for heating and cooling various types of axilla, and has the advantage that it can be widely used not only for solar water heaters for houses, for heating and cooling, but also for industrial use, waste water treatment, etc.

Made of thin plate or film, which does not yet have a thermal insulation box,
A simple, lightweight, and foldable water heater using film insulation is also possible.

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and Fig. 1 shows a heat transfer device (
(Solar Water Heater) A plan view of the main unit, Fig. 2 is a vertical cross-sectional view of the solar water heater housed in a heat insulation box, Fig. 3 is a partial cross-sectional view of the main unit with spacer wires inserted, and Fig. 4 is a vertical cross-section. 5 is a top view of the liquid distributor, FIG. 6 is a plan view of the liquid distributor, FIG. 7 is a plan view, FIGS. Figure 11, Figure 13, Figure 19, Figure 2
Figures 0 and 2 are plan views, Figure 12 is a longitudinal cross-section of Figure 11, Figure 14 is a longitudinal cross-section of Figure 13, and Figures 35, 16, 17, and 18 are The longitudinal sectional view, FIGS. 22 and 23 are plan views of the unit members. ] Thin plate-like body, 2 Liquid distributor, 3 Plate or wall which may be a thin plate, 4 Front distributor, 5 Liquid channel, 6 Transparent cover, 7
outflow channel, 8 support surface, plate, 9 insulation material or space, 10 girder,] 3 positioning tool, 14 guide rod,
6 support device, 1'7 weir, 19 elastic body fluid distributor, 20 presser bar, 21 spring, 22 tile-like liquid distributor member, 28 flexible bag or tubular container, 29 liquid as heavy slag, powder particles Body, 30'? Air vent pipe connection port. Patent Applicant Jibu Sasaoka I ■ $ 6 ffi Kaya r Me Atsushi r ω Calculation 2 mo

Claims (1)

[Scope of Claims] 1. A thin film flow heat transfer device comprising a flow path formed by covering the surface of a flowing liquid with a thin plate (1) in contact with the surface of the liquid flowing in the form of a thin film. 2 The liquid distributor (2) is a combination of one or two selected from the following methods: a school of fish, a line that may have cuts, and a strip that may have cuts, from the outside of the channel wall to the channel wall. The thin film flow heat transfer device according to claim 1, which pressurizes the flow path. 3. The thin film flow heat transfer device according to claim 2, wherein one or more liquid distributors (2) are provided, and the liquid distributors (2) are arranged on either the front or the back of the flow channel, or both. The thin film flow heat transfer device according to claim 2, which may be provided with multiple distributed load type liquid distributors that are a combination of the above. 5. The thin film flow heat transfer device according to claim 2, wherein the liquid distributor (2) is formed by arranging a plurality of unit members. 6. The thin film flow heat transfer device according to claim 4 or 5, which uses positioning tools (3) and supporting tools (rollers) as necessary. 7. The thin film flow heat transfer device according to claim 2, wherein the liquid distributor (2) is pressurized by a spring or (and) a resilient porous material. 8 The liquid distributor (2) is a flexible tube or bag-like material that uses pressure from liquid, powder, or a combination of one or more selected materials to adjust the pressure. The thin film flow heat transfer device according to claim 2, which may utilize liquid column pressure. 9 Cough if necessary (17) -! A thin film flow heat transfer device according to claim 2, further comprising an air vent (18).