WO2006111045A1

WO2006111045A1 - Movable heat recovery and storage device

Info

Publication number: WO2006111045A1
Application number: PCT/CN2005/000549
Authority: WO
Inventors: Zhihui Wang
Original assignee: Starford International Holdings Limited
Priority date: 2005-04-20
Filing date: 2005-04-20
Publication date: 2006-10-26

Abstract

A movable heat recovery and storage device includes a case, characterized in that the case is mounted on a tractor. The case has a thermal insulation layer. Plurality of heat storage pipes( m lines and n rows)are provided inside the case. A heat exchanger coil is provided on the top of the case. A heat sink distributor is also provided on the top of the case, and a heat supply distributor is provided on the bottom of the case. The coil has an inlet and an outlet connected with a hot water system. Temperature detection tubes are both provided on the top and bottom of the case. Inside each temperature detection tube is a temperature sensor, which is connected with a time and temperature controller by a lead wire. The case is filled with water or other heat transfer medium. The invention can recover surplus heat or waste heat, and supply heat to users in other places via transportation. Thus it greatly decreases energy cost and environment pollution.

Description

Mobile heat recovery and storage device

Technical field

The utility model relates to a heat storage and heating device, in particular to a mobile heat energy recovery, storage and transportation heating, which integrates a heat energy distributor, a forced heat exchange, a heat storage, a heat distribution distributor, a heat preservation and a quick interface. Water supply unit.

Background technique

At present, China's central heating, especially cogeneration, has developed rapidly, but the heat supply tension has not been fundamentally improved. The main performances are as follows: The hot network has a large investment, covering the office area, the bustling commercial area, and the densely populated population. Districts, etc., can not be spread throughout the urban area, there are many enterprises, institutions, entertainment venues, new communities rely on small self-supplied boilers to solve the problem of supply and domestic hot water, the formation of a variety of heating forms coexist. Due to the small heat source used for distributed heating, low thermal efficiency and serious environmental pollution, although the use of clean energy has been vigorously promoted in recent years, the overall proportion is small due to high operating costs.

As we all know, energy shortages are gradually threatening the survival and development of human beings. However, due to the different characteristics of power generation equipment, heat source equipment and many heat source users in thermal power plants, thermal power plants generate electricity and generate a large amount of waste heat throughout the year, but the heating period is only 120-160 days. At other times, only a small number of close-range industrial production and hotel users have caused a large amount of waste heat to be wasted; while some users outside the central heating area (such as hotels, bathing centers, etc.) have to use their own boilers for heating. This kind of live situation not only causes double waste of energy, but also increases the operating cost of users.

At present, the commonly used regenerative technologies are: atmospheric pressure water storage and high temperature water storage, solid phase high temperature heat storage. Latent latent heat (80cal/g) due to water at 0 °C and latent heat of vaporization at 100 °C

(539cal/g) is equivalent to phase change latent heat, but bulk density (lg/ml) and specific heat (lcal/g. °C) It is small, so the latent heat of the water and the sensible heat storage density are small. The use of water for medium heat storage is to use sensible heat characteristics: Atmospheric pressure water storage and high temperature water heat storage technology is the use of water temperature difference sensible heat characteristics, heat storage density Small, steam heat storage is the use of water vaporization latent heat, although the vaporization heat is large, but the steam density is small, the pressure is high, so the relative heat storage density is small, not suitable for transportation; solid phase high temperature heat storage is the use of electric heating tube to solid form the material Heated to

400-700 °C, the stored heat is released by high-temperature heat exchange. The heat exchange device is complex, the pressure is high, the safety performance is poor, the heat preservation is difficult, the heat loss is large, and it is not suitable for transportation.

Summary of the invention

The utility model aims to provide a mobile heat energy recovery and storage device, which not only relates to a movable heat storage device, but also relates to a special high-density phase change heat storage mold bar, and relates to a The design of the device capable of rapid installation and movement, and also relates to the design of an energy distributor capable of uniformly transferring heat to the phase change heat storage material and releasing it quickly for heating, and also relates to a device capable of fully automatic control The temperature time controller is designed, the invention can realize the recovery and utilization of waste heat without the pipe network, and the heat exchange mode is simple, energy-saving and environmentally friendly.

The technical solution adopted by the utility model is a mobile heat energy recovery and storage device, comprising a box body, wherein the box body is fixed on the tractor body, and the inside of the box body is provided with an insulation layer and a cavity thereof. The heat storage rod body is arranged in m rows and n columns, the upper part is provided with a heat exchange coil, and the top and the bottom are respectively provided with a heating distributor and a heating distributor, and the two ends of the coil are provided with hot water supply The inlet and outlet of the system are connected, and the heat source is externally connected to the heat distributor. The front end of the heat distributor is placed outside the tank as the inlet and outlet for heating and heating respectively; the tank is filled with water or other heat-conducting medium;

The heat storage rod body is distributed in the number of m and n^l, and is fixed in the box body through the heat storage mold rod, and the spacing between the rod bodies is 5-20; The heating distributor and the heating distributor are tubular bodies, and more than one circular hole with different pore diameters is uniformly distributed thereon;

The heat exchange coil has a u-shaped serpent shape, one end of the coil is a cold water inlet, and the other is a hot water outlet, and a water supply temperature regulating valve is connected in parallel between the inlet and the outlet;

a circulating variable speed circulating pump is connected in series at the circulating water return port;

The upper part and the lower part of the box body 1 are further provided with a temperature measuring probe tube, and a temperature sensor is arranged inside the probe tube, and is electrically connected to the time temperature controller through the wire.

Through the heat storage device designed by the utility model, the waste heat or waste heat of the thermal power plant or other heat source plants, steel plants, coking plants can be heat-recovered, and the users who need heat energy can be supplied to another place without transportation through the pipe network. It can not only independently perform heating and hot water supply, but also adjust the water temperature through the temperature control valve. It has a heat storage function using waste heat, which greatly reduces energy consumption and environmental pollution, and increases revenue for users who generate waste heat and waste heat. The use of thermal units reduces energy consumption, reduces emissions of polluting gases, and also reduces operating costs, while also reducing equipment investment.

The utility model has the advantages of compact structure, heat storage density of up to 160,000 kcal/m3, small volume and no pressure operation, safety, stability and reliability, and is a perfect energy-saving and environmental protection device.

With the current rising fuel prices, the heating operation costs continue to increase, and the use of waste heat and waste heat recycling can benefit many parties. Therefore, the promotion and application of the utility model will bring greater economic and social benefits. Promotion value and development prospects.

DRAWINGS

1 is a longitudinal sectional structural view of a heat supply device of the present invention.

Figure 2 is a diagram showing the state of use of the present invention.

In the picture: 1. Box, 2. Insulation, 3. Seal back bend,

4. Regenerative rod body, 5. Heat exchange coil, 6. Phase change heat storage material,

7. Heating the distributor, 8. Heating distributor, 9. Temperature measuring probe,

10. Regenerative rod body divider, 11. Support, 12. Heating circulating water return, 13. Supply circulating water outlet, 14. Hot water outlet, 15. Cold water inlet,

16. Hot water supply temperature regulating valve 17. Temperature controller, 18. Supply frequency variable frequency circulating pump, 19. Heat transfer medium, 20. Heat meter, 21. Tractor chassis,

22. The upper cover of the box, 23. Inspection port, 24. Liquid level indicator,

25. Tractor.

detailed description

The present invention will be further described in detail below based on the drawings and embodiments:

As shown in FIG. 1 , the utility model comprises a box body 1 , the top of which is sealed by a box upper cover 22 , and an inspection port 23 is opened on the upper cover 22 of the box body, and the internal condition of the box body 1 can be observed, which is characterized in that: The bottom of the body 1 is provided with a support 11 fixed to the tractor 25 by the tractor chassis 21, and can be fixed or fixed by welding, so that the entire device can be moved by the tractor to become a movable device; The inner wall of the body 1 is provided with a heat insulating layer 2, which can prevent the heat from being rapidly radiated outward. The inner cavity of the casing 1 is filled with a heat conductive medium 19, which can be water or other heat conductive material, and the heat storage rod body 4 is immersed in the heat conductive medium 19. The heat storage rod body 4 is composed of a phase change heat storage material 6 having a melting point of 75-95 ° C and a heat of fusion of 50-75 kcal/kg, which is a thermal energy storage material, when the phase change heat storage material 6 reaches When it reaches its melting point, its latent heat characteristics begin to absorb heat and change from a solid state to a liquid state. Conversely, when the temperature of the phase change heat storage material 6 falls below its melting point, its latent heat characteristics begin to release heat. , from liquid to solid. The utility model utilizes the above characteristics to provide a phase change heat storage material 6 in the casing 1 The heat storage rod body 4 can absorb the heat of the heat transfer medium 19 and store it, and then release its heat energy as needed to realize the conversion of heat energy.

In order to improve the heat storage capacity and the effect of heat release, the heat storage rod body 4 may be provided in plurality as needed, and fixed and uniformly distributed in the tank body 1 through the heat storage rod body spacer 10, and may be uniformly formed in m rows and n columns. Arrangement, where _m , n^ l , according to the heating demand and the heating area, the spacing between the rods is 5-20 mm, which can increase the surface area of the heat storage rod 4, increase the contact surface with the heat transfer medium 19, and improve Heat transfer capacity.

In the upper part of the box body 1, a heat exchange coil 5 is arranged, which has a U-shaped serpentine shape, is placed outside the box body through a C-type elbow, and is immersed in the heat transfer medium 19 at the two ports of the coil tube, respectively The cold water inlet 15 and the hot water outlet 14 are connected to the hot water supply system, and the cold water in the pipe can be heated by the heat exchange between the heat exchange coil 5 and the heat transfer medium 19 to increase the temperature of the cold water in the pipe, and the tap water is cooled from cold water. The inlet 15 enters the heating and becomes hot water, which can flow out from the hot water outlet to supply the user. Between the cold water inlet 15 and the hot water outlet 14, a water supply temperature regulating valve 16 is connected in parallel, which can be adjusted according to different seasons and different needs.

In the lower part of the box body 1, located below the heat storage rod body 4, a heating distributor 7 is provided, which can be made of a seamless steel pipe, which is provided with a plurality of circular holes of different apertures, and the outlet end of the distributor is traversed and connected to the box. On the side wall of the body 1, the inlet is externally connected to the heat recovery device, and the waste heat or waste heat collected by the heat recovery device can be sent into the inner cavity of the casing 1 through the small hole, and the heat energy is transmitted to the heat storage rod body 4 through the heat conduction medium 19, so that The heat storage function is realized, and the outlet of the heating circulation is provided at the outlet. Above the heat exchange coil 5, there is a heating distributor 8 whose front end passes through the tank 1 and is welded with a connecting flange, which is used as an inlet and outlet for heating and supplying, respectively, and can be made of seamless steel pipe. , which is provided with a plurality of circular holes which can be used for different pore diameters of the heat exchange, and is welded and sealed when passing through the two-layer metal plate of the casing 1, and the outlet water is connected to the circulating water in the outlet. The outlet has a circulating water outlet 13, which is connected to the heating system through a heating variable frequency circulating pump 18 connected in series to continuously supply heat to the user.

In order to detect the heating temperature in real time, a heat meter 20 is connected in series to the heating and hot water supply pipes, which are respectively connected to the supply circulating water outlet 13 and the domestic hot water outlet 14.

In the upper part and the lower part of the box body 1, a temperature measuring probe is also arranged. 9. A temperature sensor is arranged inside the probe tube, and the temperature is connected to the time temperature controller 17 through the wire, and the temperature of the heat conductive medium 19 in the box body 1 can be measured in real time.

The utility model can recover and store a large amount of waste heat of a steelmaking plant, a coking plant, a corundum plant, a calcium carbide plant, a brewery, etc. through a recovery device 2, and then connect with the utility model through a pipeline, and transfer the recovered heat to the utility model. The heat storage is then sent to the heating user through the tractor, thereby achieving the design purpose of the utility model.

In summary, the utility model has significant breakthroughs in the recovery and utilization of waste heat and waste heat, the planning and design of the heat storage system, the promotion and application of energy storage materials, and the like, and has a certain guiding role.

The working process of the utility model - the heat storage process:

The heat carrier medium (water above 90 ° C or steam of 10 CTC - - 130 ° C) of the external heat source is connected to the heating distributor 7 , and the heat contained therein enters the tank 1 through the heating distributor 7 and heat-transfers the medium 19 Heating, the temperature of the heat transfer medium 19 is continuously increased, and the heat is also uniformly diffused and transmitted to the phase change heat storage material 6 through the outer wall of the heat storage rod body 4. The temperature of the phase change heat storage material 6 gradually rises, and the phase is not reached. Before the temperature-melting point, the heat storage rod 4 stores sensible heat. However, after the phase change heat storage material 6 obtains sufficient heat, the lattice change-phase change latent heat gradually occurs. When the phase change is completed and the set temperature is reached, the heat storage process is completed, and the heat storage amount is sensible heat (60-95 ° C). ) Add latent heat, totaling about 92-95kcal/kg. Heat release heating (hot water) process:

For the supply user, the supply and return ports of the heating system are respectively connected to the outlet of the heat meter (20) of the movable heat storage device 14 and the heating return port 12, and the phase change heat storage material 6 is The stored heat is uniformly transmitted to the heat transfer medium 19 through the outer wall of the heat storage rod body 4, so that the temperature of the water is raised. Generally, the water can be heated to 45-80 根据 according to the need, and under the action of the heating variable frequency speed regulation circulating pump 18, The heated water flows out through the supply circulating water outlet 13 to supply heat to the heating system. When the phase change heat storage material 6 gradually releases the accumulated latent heat, the lattice change is solidified one by one, the temperature begins to decrease and the sensible heat is released, and when the prescribed temperature (50-6 CTC) is reached, the heat release process ends.

'For domestic hot water users, the heating circulating water outlet 13 of the utility model is first connected to the inlet of the user water supply system when the hot water is supplied, and the inlet is connected with the return water of the tap water pipe or the user hot water system, and the water supply temperature is adjusted by adjusting the water supply. The required supply temperature of the valve 16 mixed with recycled back water or tap water is measured by the heat meter 20.

Example:

The utility model can be heated and stored by steam in a thermal power plant, and the outer shape of the box 1 is

5500 X 2100 X 1600ram, 36 tons of phase change heat storage material. When used for heat recovery of 3 million kilocalories in thermal power plant heat recovery, the heat transfer steam enters through the heat distributor 8 in the tank 1 and heat-transfers 19 therein. Heating, the temperature of the medium is continuously increased, and the heat is also transferred to the phase change heat storage material 6, so that the temperature of the phase change heat storage material 6 is gradually increased, and the sensible heat is stored before the phase transition temperature-melting point is reached, and the phase change heat storage is performed. After obtaining sufficient heat, the material 6 reaches the phase transition temperature-melting point of 79. 4 ° C, and the phase change storage latent heat gradually occurs. When the phase transition ends and reaches the set temperature, the heat storage process is completed, and the process takes about 100-200 minutes. The total heat stored in the phase change heat storage material 6 is 3000000 kcal; After the car is transported to the user, it is connected to the user's domestic hot water system or supply system. The heat stored by the heat transfer medium 19 is evenly transferred to the water, and the water can be heated to 40-80 ° C. The temperature adjustment is wide and the tap water is mixed to the required water supply temperature, and the picking is also carried out. With the continuous heat release, the phase change heat storage material 6 gradually undergoes a lattice change--solidification, and after releasing the accumulated latent heat, the temperature begins to decrease. The sensible heat is released, and when the specified temperature (50 ° C) is reached, the heat release is completed. At this time, the total water supply exceeds 100 tons, and the heating can be 8000--10,000 square meters for one day.

According to the embodiment of the present invention, if the arrangement, shape and structure of the heat exchange coil 5, the heat storage rod 4, and the heat energy distributor 8 are replaced with other similar technical solutions, they are all applicable to the present invention. Scope of protection, the above is a specific embodiment of the present invention and its heat conduction, heat transfer, heat storage, heat release, heat supply mechanism, if the equivalent change and partial application according to the concept of the present invention, The functional function produced should not be beyond the spirit of the specification and the drawings, and should be within the scope of the present invention.

Claims

Rights request

A mobile heat energy recovery and storage device, comprising a box, characterized in that:

The box body is fixed on the tractor, and the box body is provided with a heat insulation layer, the inner cavity is arranged with a heat storage rod body distributed in m rows and n columns, the upper part is provided with a heat exchange coil, and the top and the bottom are respectively provided Heating the distributor and the heating distributor, the two ends of the coil are provided with inlet and outlet ports connected to the hot water supply system, and the heating distributor is externally connected with a heat source, and the front end of the heat distributor is placed outside the tank, respectively, as heating And heating inlet and outlet; the gap inside the tank is filled with water or other heat transfer medium.

2. The mobile thermal energy recovery and storage device according to claim 1, wherein: the heat storage rods are distributed in a quantity of m, n^l, and are fixed in the tank by a heat storage mold rod. The spacing between the rods is 5-20 legs.

3. The mobile thermal energy recovery and storage device according to claim 1, wherein the heating distributor and the heating distributor are tubular bodies, and one or more circular holes of different diameters are evenly distributed thereon.

The mobile heat energy recovery and storage device according to claim 1, wherein: the heat exchange coil has a U-shaped serpent shape, one of the two ends of the coil is a cold water inlet, and the other is a hot water outlet. There is a water supply temperature regulating valve connected in parallel between the inlet and outlet.

The mobile thermal energy recovery and storage device according to claim 1, wherein a circulating variable speed circulating pump is connected in series at the circulating water return port.

The mobile thermal energy recovery and storage device according to any one of the preceding claims, wherein: the upper and lower portions of the casing 1 are provided with a temperature measuring probe, and a temperature sensor is arranged inside the probe tube. The wire is electrically connected to the time temperature controller.