Warm water preparation device using compost fermentation heat and warm water preparation system

Abstract

To provide a warm water preparation device using compost fermentation heat, disposed to be adjacent to a community to use plant-based waste as a feed stock in the vicinity of a local area, solving a problem of odor and capable of abundantly supplying high-temperature water of 53°C or higher by using a thermal energy generated from a microorganism fermentation material that performs high-temperature fermentation, and to provide a system thereof.SOLUTION: Warm water at 53 to 73°C is produced at a flow rate of 1.0 to 3.0 L / min by flowing air through a fermenting raw material feed stock including a special spawn body generating compost fermentation heat of 75°C or higher, present in a compost fermentation metallic tank of a volume of 4 m3 or more provided with an air chamber disposed in the lower part thereof and capable of injecting air, transferring steam to a resin heat exchanger constituted of crosslinked polyethylene pipes contained in heat collection panels disposed thereabove, to exchange heat with fermentation heat warm water generated by condensation, and connecting with a resin heat exchanger disposed inside the side face of the fermentation reaction metallic tank, in parallel. A system of supplying a warm bath facility with warm water at a flow rate of 5 to 60 L / min for 24 hours / day is provided by pipe-connecting 4 to 28 of the devices in parallel.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a hot water producing device and a hot water producing system that utilizes high-temperature fermentation heat obtained during the production of a highly functional microbial fermentation material. [Background technology]

[0002] Compost provides nutrients (improvement) to the soil, while fertilizer provides nutrients to crops, and there are chemical fertilizers and organic fertilizers. Compost is classified into leaf mold, immature compost, and fully matured compost, and the faster the soil improvement rate, the higher the product value.

[0003] On the other hand, fertilizers (nitrogen, phosphorus, potassium) have a higher added value than compost because they directly increase the value of the resulting crops. Due to consumer demand for the elimination or reduction of chemical fertilizers, there is a strong movement to replace them with organic fertilizers.

[0004] Compost can be divided into plant-based and animal-based depending on the source material. Animal-based compost is effective as a fertilizer because it contains a lot of nitrogen, but it is also based on the concept of waste disposal of excrement. For this reason, it is sometimes put into farmland in an immature state, which not only causes odor problems but also poses the risk of crop damage and nitrogen starvation, so it does not have a high market value.

[0005] There is a trade-off between compost production and odor. Fermentation technology solves this problem, and specifically, it is closely related to the diversity and abundance of microorganisms. The more active the microorganisms are, the greater the soil improvement effect and the more effective the deodorizing effect can be.

[0006] Fermented materials fermented at high temperatures under aerobic conditions are known to promote the proliferation of plant growth-promoting root microorganisms, promote root growth, which is closely related to crop growth, and help prevent disease and combat continuous crop damage.

[0007] Composting is the process of breaking down organic matter and turning it into minerals, but not to an almost inert state, but to a point where it has a composition that improves the soil and increases crop productivity. The main microorganisms that play a role in the composting process are bacteria, actinomycetes, and filamentous fungi. These microorganisms are surrounded by a hard cell wall, just like plants, and secrete enzymes to break down high molecular weight organic matter, breaking it down into low molecular weight organic matter such as glucose and amino acids, which are then absorbed into the microbial body and multiply.

[0008] Therefore, it is mainly easily decomposable organic matter that is decomposed during the composting process. In the early stages of fermentation, easily decomposable organic matter is rapidly decomposed by the action of aerobic microorganisms. Fermentation heat is generated during this process, and this heat evaporates the moisture derived from the molecular structure of the polymeric organic material and the water in the composition of the added fermentation material.

[0009] In compost production, the fermentation temperature also depends on whether the starter culture contains so-called heat-resistant or hyper-heat-resistant bacteria. In other words, the abundance and diversity of bacterial species contained in the starter culture is of utmost importance. Furthermore, to achieve high-temperature fermentation, a uniform supply of oxygen to the fermentation raw materials is also necessary. By repeating the so-called "turning" process several times and leaving the mixture for approximately three to six months at a stage where the temperature has not yet risen after this process, even difficult-to-decompose substances will be decomposed. In compost buildings, air is circulated through pipes embedded in the concrete surface to promote fermentation and speed up the composting process.

[0010] Composting equipment is classified into sealed vertical composting equipment, screw mixers, rotary mixers, and circulation composting tanks depending on the shape of the composting tank.

[0011] Composting must be carried out under aerobic conditions, and to allow oxygen to enter, the mixture is "turned over" using a loader, scoop-type mixer, or self-propelled mixer.

[0012] After the turning process, the heat generated by fermentation increases. In the early stages of compost fermentation, this heat energy can reach temperatures exceeding 80°C. In terms of calorie content, combustion produces approximately 4,500 kcal per kg of dry beef matter, while woody materials such as bark produce approximately 4,000 kcal. This is roughly 40% of the 8,600 kcal / kg produced by combustion of heavy oil, so effective utilization of the heat energy generated by fermentation during the composting process has long been studied.

[0013] The "Basic Policy for Promoting the Use of Livestock Manure" calls for the promotion of the use of energy generated during the composting process. There are many examples of livestock manure energy utilization, such as the use of methane combustion heat in the methane fermentation treatment process. However, because the treatment is carried out under anaerobic fermentation conditions, it requires odor control equipment and equipment to handle the gas state, which results in large capital investment costs, and from an economic standpoint, it has not been widely used.

[0014] In response to this, research is underway into methods that utilize heat as it is. With the spread of suction aeration composting methods and sealed vertical composting equipment, the heat of fermentation obtained from composting under aerobic conditions is used to heat livestock barns and to heat drinking water for livestock.

[0015] Non-Patent Document 1 reports a system that recovers heat generated by compost fermentation and converts it into hot water. In a composting facility that can directly recover fermentation exhaust using a suction ventilation system, if the exhaust is led to a latent heat recovery type heat exchanger, up to 77% of the exhaust heat can be recovered to produce hot water. It reports that a facility with a capacity of 120 dairy cows can produce 11.5 tons of hot water at 40°C per day.

[0016] Non-patent document 2 describes a fermentation volume of 10 m 3 The exhaust gas from a sealed vertical fermentation apparatus was introduced into a plate-fin type heat exchanger, and under summer conditions, with a water temperature of 29.2°C and a water flow rate of 0.7 to 9.0 L / min, the resulting hot water temperature was 44 to 34°C, and under winter conditions, with a water temperature of 11.8°C and a water flow rate of 0.6 to 10.0 L / min, the resulting hot water temperature was 58 to 29°C, with a heat exchange efficiency of around 90%.

[0017] Non-Patent Document 3 reports on greenhouse heating using fermentation heat. Fermentation raw materials consisting of 12.7% food waste, 8.0% fish bones, 7.6% blood, 70.1% sawdust, 1.6% rice bran, and 0.015% fermentation bacteria (Z bacteria) were mixed together, and the water content was 63% and the specific gravity was 0.42 kg / m. 3 The raw material composition was embedded in a rectangular plain woven wire mesh measuring 1800mm long, 900mm short, and 1050mm high to a depth of 950mm, and a study was presented on heating using fermentation heat. As a result, a fermentation temperature of 68°C was achieved by blowing air.

[0018] Patent Document 1 proposes an invention that controls the amount of aeration into compost materials depending on the fermentation temperature in order to promote composting.

[0019] Patent Document 2 proposes an invention that allows fermentation to begin in a short period of time and produces large amounts of compost by maintaining a vacuum inside the mixing tank to keep it anaerobic and controlling the temperature in order to efficiently utilize the activity of fermentation bacteria.

[0020] The above-mentioned use of compost heat is for livestock, and a temperature of 30 to 40 degrees Celsius is considered comfortable for animals when it comes to drinking water and heating livestock barns. On the other hand, when supplying hot water to people, the water is first heated to over 60°C and then mixed with cold water at hand to produce hot water at 40°C. This heating is intended to sterilize the water to preserve its quality. In other words, when it comes to using hot water in hot bath facilities, supplying hot water at 60°C or higher can be expected to reduce boiler operating hours and significantly reduce the energy used to produce hot water.

[0021] The inventors analyzed the use of heavy oil by purpose at resort hotels with open-air baths and other facilities and found that: (1) keeping the bathtub warm against heat radiation from the surface; approximately 50%; (2) keeping the hot water tank warm at 60°C; approximately 30%; and (3) using heavy oil for filling the baths and showers, which is proportional to the number of guests, is approximately 20%. In other words, it was found that by supplying hot water of 60°C or higher from an external source, like a hot spring, it is possible to reduce the amount of heavy oil used by approximately 50%, which is the sum of (2) and (3).

[0022] The advantages of compost fermentation as a renewable energy source are that the equipment can operate 24 hours a day, the fermentation heat reaches high temperatures of over 80°C, and steam is generated. However, because the energy density is low, there has been no invention that allows the fermentation heat to be used in a practical way in a hot spring facility.

[0023] Composting has been treated as a method of disposing of polymeric organic materials. Huge amounts of polymeric organic materials (grass, food waste, dead leaves, waste from food factories) are generated in various places, not only in rural areas but also in urban areas and resort areas.

[0024] Due to the problem of the odor that is emitted during compost production, in most cases it is simply disposed of as is. Of course, this problem can be solved by using compost production equipment that has been designed to combat odors, but the capital investment required for this is enormous, meaning that it is not economical and effective use of this waste has not progressed well.

[0025] On the other hand, because it is a community, there is an inexhaustible supply of raw materials for composting. If fermentation technology could solve the odor problem while also using the heat from compost fermentation to supply hot water of 50°C or higher to human communities such as hotels, golf courses, and public bathing facilities, it would result in significant savings in fuel costs and accelerate the return on investment of compost production facilities.

[0026] A composting method using hyperthermophilic bacteria developed by Kyushu University has been introduced. Non-Patent Document 4 describes how these hyperthermophilic bacteria can be used to produce hot water at 30 to 40°C by burying 100 meters of φ25 mm cross-linked polyethylene pipe in a pile of bark compost piled up to a height of 2 to 3 meters and left exposed to the elements.

[0027] To achieve the objectives of this invention, in order to stably obtain high-temperature fermentation heat during compost production, it is necessary to add a seed culture that is compatible with locally available compost raw materials. This is because the conditions of fermentation raw materials vary greatly depending on the location, raw materials, and their processing history, and microorganisms that produce enzymes that decompose odor sources, in particular, must be present and proliferate. This condition depends on the diversity and abundance of microorganisms present in the seed culture.

[0028] The inventors have commercialized a special fungus called Kintaifuseki (registered trademark) (Hakkendo Co., Ltd.) that has been fermented at high temperatures using their own unique fermentation technology, specifically by applying complex fermentation technology. Analysis using the Polymerase Chain Reaction (PCR) method revealed that the seed cells contained more than 500 species of microorganisms (Table 1). In the present invention, by incorporating this bacterial culture into the fermentation raw material, the odor problem is solved and high-temperature fermentation conditions are achieved for compost production. [Prior art documents] [Patent documents]

[0029] [Patent Document 1] Patent No. 5565773 [Patent Document 2] JPH09227202A [Non-patent literature]

[0030] [Non-Patent Document 1] NARO, Research Results, System for recovering compost fermentation heat, a low-temperature heat source, and converting it into hot water, 2012 [Non-patent document 2] Eisuke Kawamura, Akira Takada, and Yoichiro Kojima: Journal of the Japanese Society of Swine Science 53(4), 129 [Non-patent document 3] Shinichi Sakai: Annual Report of Environmental Science, Shinshu University, Vol. 13, 1991 [Non-patent document 4] Katsumi Tanaka: Utilization of fermentation thermal energy using bark, 2012 Summary of the Invention [Problem to be solved by the invention]

[0031] The problem to be solved is that no compost production equipment has been invented that can convert fermentation heat energy into hot water of 53°C or higher without producing an unpleasant odor, and no hot water supply system that can supply hot water to hot bath facilities has yet been invented. [Means for solving the problem]

[0032] The present invention is as follows. [1] A compost heat-utilizing hot water production device that uses the following components A, B, and C for compost fermentation materials that are 100% plant-derived raw materials and contain seed fungi containing at least aerobic soil microorganisms such as actinomycetes, yeasts, and nitrifying bacteria, and that produces hot water at a temperature of 53°C to 73°C and a flow rate of 1.0 L / min to 3.0 L / min. A Height between 1100mm and 1500mm, volume 4m 3 8m from 3 Metal compost fermentation reactor There is a chamber at the bottom of BA into which air can be sent, and the hole diameter of the upper plate; punched metal b is 4mm to 8mm. C. A resin heat exchanger system consisting of 6 to 10 cross-linked polyethylene pipes connected in series, with a total length of 180 to 400 m, and consisting of two systems of cross-linked polyethylene pipes, C-1 and C-2, with the water inlets and outlets of the radiant heat collector pipes connected in parallel. The diameter of the cross-linked polyethylene pipes is 3 mm to 6 mm, and the pipes are wound in a flat circular shape (30 to 60 m). C-1 A top plate compost fermentation heat collection panel with a resin heat exchanger sandwiched between metal plate a and punched metal a, with a space of 10 to 15 mm C-2 A side inner heat collection panel with a resin heat exchanger installed inside [2] A compost heat-utilizing hot water production system in which the inlets and outlets of the cross-linked polyethylene pipes of the resin heat exchangers of compost fermentation heat-utilizing hot water production equipment are connected in parallel in 4 to 28 units, and the hot water is concentrated into a polyethylene pipe with a diameter of 16 mm to 32 mm, producing hot water at a temperature of 53°C to 73°C and at a flow rate of 5 L / min to 60 L / min. [3] Bacteria seed culture as a seed for compost fermentation raw materials: Trademark registration; Compost fermentation heat utilization hot water production equipment and system shown in Table 1 [Effects of the Invention]

[0033] This system can efficiently generate ample amounts of hot water from compost fermentation heat in the production of plant-based compost. Because it does not produce unpleasant odors, this system can be used adjacent to hotels and golf courses, helping to reduce energy costs and carbon dioxide emissions at hot spring facilities. Furthermore, the compost fermentation material produced contains a wide variety of bacterial species, making it possible to provide a highly functional fermentation material product that not only has excellent soil improvement effects but also promotes plant growth. [Brief explanation of the drawings] [Figure 1] External view of the compost heat-utilizing hot water production system consisting of a heat collection panel (top panel and inside side), a compost fermentation reactor, and an air chamber [Figure 2] Cross-sectional view and plan view of a heat collection panel containing a resin heat exchanger [Figure 3] Plan and cross-sectional view of a resin heat exchanger made of cross-linked polyethylene pipes and EPDM rubber packing [Figure 4] External view of a hot water production system (partially cut out) consisting of a compost fermentation heat-utilizing hot water production device [Figure 5] Overall view of the hot water production system of the present invention using a glasshouse DETAILED DESCRIPTION OF THE INVENTION

[0034] <Compost production method> This invention relates to a composting system that utilizes heat from compost fermentation to produce hot water at temperatures between 53°C and 73°C. The system uses a mixture of seed cells and enriched bacterial stocks containing aerobic thermophilic microorganisms (see Table 1). While maintaining high temperatures of 75°C or higher, resin heat exchangers are installed in both the ceiling and the inside of the side walls of the compost fermentation reactor, allowing heat to be collected by a radiant heat conduction mechanism to produce hot water. The system produces hot water at temperatures between 53°C and 73°C.

[0035] The fermented compost raw materials are made from 100% plant-based materials such as bark, sawdust, soybean pulp, coffee grounds, sugarcane waste, corn waste, weeds, grass clippings, and waste mushroom beds. The compost raw materials are mixed in advance with a loader, etc., with a mixture of seed fungus and enriched fungus in a ratio of at least 10% to 40%, preferably 20% to 30%. The results of the fungal species analysis of the enriched fungus in a ratio of 0.5% or more are shown in Table 1.

[0036] [Table 1]

[0037] Height is 1100mm or more, 4m 3 The mixed fermentation material compost raw materials are loaded into the compost fermentation heat-utilizing hot water production device of the present invention, which has the above-mentioned compost fermentation tank, using a loader. A height of less than 1100 mm is not preferable because the amount of fermentation material compost that acts as a heat source is reduced, making it impossible to collect hot water at 53°C or higher for an extended period of time. A height of more than 1500 mm is also not preferable because it makes it difficult to load the fermentation material compost raw materials using a loader or other device. The volume of the fermentation reactor is 4m 3 If it is below this temperature, it will not be possible to maintain high fermentation heat for a long period of time, which is not desirable. 3 If the amount exceeds this, the workability of compost production will deteriorate, which is not desirable.

[0038] The top surface of the added fermentation compost raw material must be smoothed with a drill bit so that it does not come into contact with the perforated metal a of the heat collection panel and so that there is no gap of more than 150 mm. When the compost material comes into contact with the perforated metal (a), condensed water moves to the surface, creating anaerobic conditions and possibly producing odors, which is undesirable.A gap larger than 150 mm is undesirable because it reduces the efficiency with which the high-temperature steam generated by compost fermentation is transferred to the perforated metal (a).

[0039] The perforated metal a is preferably 1 to 2 mesh, and a small number of holes is undesirable because it reduces the efficiency of transporting the generated fermentation steam to the upper part. The holes are preferably 2.5 to 4 mm, and more preferably 3 mm. Holes smaller than 2.5 mm are undesirable because they reduce the efficiency of transporting high-temperature, high-humidity steam. Holes larger than 4 mm are undesirable because hot water drips from the perforated metal a, reducing the heat exchange rate and making it difficult to produce hot water at 53°C or higher.

[0040] The fermentation material compost is fed into the air chamber through a duct from a ring-type blower. Flow control is important to ensure continuous aerobic conditions. If the flow is too strong, the fermentation temperature will drop, so the optimum flow rate is 5L / m. 3 to 150 L / m 3 5 L / m 3 If the volume is less than 150L / m, it is not desirable because aerobic conditions cannot be maintained. 3 If the diameter exceeds 1 / 4, the fermentation temperature will drop, making it difficult to collect heat over a long period of time, which is undesirable. To ensure uniformity in the flow rate, the design of the hole diameter of the perforated metal b is important, with 4 mm to 8 mm being preferable, and 6 mm to 7 mm being even more preferable. If the diameter is less than 4 mm, the amount of ventilation will be restricted, which is undesirable. If the diameter exceeds 8 mm, the raw materials added will fall, which will have a negative effect on the air flow in the air chamber, which is undesirable.

[0041] <Hot water production system> The present invention relates to a system that uses the heat generated by fermentation in a compost fermentation heat-utilizing hot water production apparatus to produce hot water in a resin heat exchanger and supply it to hot bath facilities in hotels and other facilities. More specifically, high-temperature, high-humidity steam generated by the fermentation reaction is taken in through holes in the perforated metal (a) of the heat collection top panel, and cold water is passed through a resin heat exchanger consisting of cross-linked polyethylene pipes wound in a flat circular shape with an EPDM rubber packing, thereby producing hot water at 53°C to 73°C. It is important that the resin heat exchanger of the present invention is wound in a flat shape (sheets) of 30 to 60 m, and the spacer thickness of the heat collection top panel is 10 to 15 mm. A non-flat shape is not preferable because it makes it difficult to efficiently absorb the heat generated by compost fermentation.

[0042] The total length of each compost fermentation heat-utilizing hot water production system, consisting of flat, disc-shaped heat exchangers made of cross-linked polyethylene pipes connected by nipples, is 180 to 400 meters. Lengths shorter than 180 meters are not recommended because the heat exchange rate decreases and it becomes impossible to obtain hot water at 53°C. Lengths longer than 400 meters are also not recommended because the flow rate decreases.

[0043] The diameter of the cross-linked polyethylene pipe is preferably 3 to 6 mm, and is not preferable if it is smaller than 3 mm because the flow rate will be low, and is not preferable if it exceeds 6 mm because the heat conversion efficiency will drop significantly.

[0044] Resin heat exchangers can ensure optimal flow rate and hot water temperature by connecting the heat collection panel series on the ceiling of the compost fermentation tank with the heat collection panel series inside the side of the compost fermentation tank in parallel with resin pipes. By installing six to ten panels on the ceiling and six to ten panels inside the side, compost fermentation heat can be efficiently collected. Installing them on the outside of the side is not recommended, as the heat collection efficiency in that area drops significantly. With resin heat exchangers installed inside, compost can be produced even with exposed resin pipes, but covering them with polyethylene resin sheets prevents contamination without reducing performance.

[0045] By connecting 6 to 28 compost fermentation heat-utilizing hot water production devices in parallel with cross-linked polyethylene pipes, it is possible to produce hot water at a flow rate of 10 to 60 L / min. By connecting the ends of the cross-linked polyethylene pipes as inlets with nipples and headers, and similarly connecting the outlets, it is possible to secure inlets for tap water or cold water and an outlet for hot water produced using fermentation heat.

[0046] The fermented material compost produced by this invention is a high-value-added, highly functional microbial fermented material product that has an extremely high soil improvement effect due to the remarkable variety and abundance of bacterial cells resulting from the blending of bacterial compost, and also contains fertilizer components such as amino acids. Furthermore, this fermented material compost maintains a high temperature of over 75°C for a long period of time, which kills pest eggs and weed seeds that may be mixed in with the raw materials, resulting in extremely stable quality of the compost product. [Example]

[0047] The system of the present invention was installed in the seven-series greenhouse adjacent to the hotel shown in Figure 5, and hot water was produced by heat exchange using the heat generated from the compost fermentation during the production of the high-performance fermentation material compost. The hot water was supplied to the hotel's hot spring facilities.

[0048] The compost mixture was prepared as fermentation material compost, consisting of 30% waste mushroom bed, 20% sawn wood powder, 20% dried soybean pulp, 10% L-glutamic acid residue, and 20% mushroom bed extract. The mixture was then hydrated to a moisture content of 70% and had a density of 0.48 kg / m. 3 The moisture content was measured using an infrared moisture meter FD-610 manufactured by Kett Scientific Research Co., Ltd.

[0049] The above-mentioned compounded materials were mixed in a scat loader S450, left for half a day, and then 5 m of the above-mentioned materials were poured into each of 16 hot water production devices using compost fermentation heat of the present invention. 3 The surface of the fermentation material compost raw material was smoothed with a drill bit, and the distance from the perforated metal a of the heat collection panel was adjusted to 120 mm.

[0050] A: The dimensions of the compost fermentation reactor were: bottom: 1500mm x 2300mm, height: 1400mm. B: The dimensions of the air chamber were: bottom: 1500mm x 2300mm, height: 200mm. The ventilation holes in the punched metal b were φ7mm.

[0051] The perforated metal a of the heat collection panel had a mesh size of 1, with 3mm diameter vent holes. The resin heat exchanger was a 35m cross-linked polyethylene pipe (Oyupex SDXL-5A570-HV) manufactured by Inoac Jyukan Co., Ltd., with a diameter of 5mm and an outer diameter of 7mm. It was fitted into an EPDM rubber gasket of the shape shown in Figure 2 and wrapped around a circle, resulting in a diameter of 730mm. Six of these flat, circular resin heat exchangers were installed on top of the perforated metal a, with a spacer of 10mm thickness. The resin pipes in the ceiling section were joined with nipples, totaling 200m. Additionally, three pieces were attached to the lengthwise direction and two pieces to each of the short sides of the three inner sides of the door of the compost fermentation tank A, excluding the panel, for a total of seven pieces, totaling 230m. The adhesive used was silicone (8060) manufactured by Shin-Etsu Chemical Co., Ltd., and applied to the EPDM rubber gasket side of the resin heat exchanger. By connecting the two lines, the ceiling and side, in parallel, the flow rate per compost heat generating fermenter was 1.6 L / min.

[0052] Hitachi inverter blower (1.5kW) at 100L / m for 24 hours from start 3 Once the fermentation temperature reaches 80°C, inject 10L / m 3 The system was aerated continuously for 15 days at this volume. One end of the cross-linked polyethylene pipe, which penetrated the metal a of the solar collection panel and was exposed to the outside, was connected to a 7mm diameter cross-linked polyethylene pipe using a 5A-7A nipple, and then connected to a 10mm diameter cross-linked polyethylene pipe using a 7A-7A tee and a 7A-10A tee, and then to a 20mm diameter cross-linked polyethylene pipe using an Onda double lock joint. Water was poured in at a pressure of 0.3 MPa, and the other end was similarly connected to a 20mm diameter cross-linked polyethylene pipe (manufactured by Inoac Jyukan Co., Ltd.). The fermented hot water was temporarily stored in a 2-ton FRP tank, and then supplied to the hotel's hot bath facility using a high-temperature submersible pump (H2: JCV-15-50).

[0053] Sixteen days after the fermentation material compost raw materials were added, one side of the compost fermentation reactor A was removed, and the fermentation material was removed using a bobcat and moved to the maturation area for the secondary fermentation process. After 90 days, the material was sieved and bagged to produce the product.

[0054] Odor sensory test method: Remove the heat collecting panel from the top of the compost fermentation tank and score from a height of 10 cm from the top (1 point: strange odor; mercaptan odor: strong, 2 points: odor derived from fermentation materials: normal, 3 points: odor derived from fermentation materials: weak: not unpleasant). [Example]

[0055] The same procedure as in Example 1 was carried out except that the diameter of the cross-linked polyethylene pipes of the resin heat exchangers of the heat collection panel was changed to 3.0 mm, the total length of six resin heat exchangers connected inside the top heat collection panel was changed to 150 m, and five heat exchangers installed inside the side were connected to make the total length 170 m.

[0056] The same procedure as in Example 1 was carried out, except that the resin heat exchanger was installed inside the heat collection panel on the top plate side so that the total length was 120 m, and the resin heat exchanger was installed on the outer side of the side of the fermentation reaction tank so that the total length was 120 m.

[0057] The same procedure as in Comparative Example 1 was carried out, except that a resin heat exchanger was not installed inside the top-plate-side heat collection panel, but was installed on the outside of the side of the fermentation reaction tank so that the total length was 300 m.

[0058] The diameter of the cross-linked polyethylene pipe of the resin heat exchanger in the heat collection panel was changed to 7.0 mm, and the total length was increased to 200 m. No resin heat exchanger was installed on the side of the fermentation reactor. The spacer thickness was changed to 60 mm. Since EPDM rubber packing was not used, the resin pipe was stacked three times and secured with Insulok. The same procedure as in Example 2 was carried out, except that commercially available seed culture Callus NC-R (Rizal Fermentation Co., Ltd.) was used at 5% instead of the enriched inoculum.

[0059] [Table 2] [Explanation of symbols]

[0060] 1. Heat collection panel 1a Resin heat exchanger 1aa EPDM rubber packing 1ab Cross-linked polyethylene pipe 1b metal plate a 1c Punching metal a 1d spacer 2. Compost fermentation reactor 3 air chambers 3a Air blow inlet 3b Punching metal b 4a Cold water inlet of cross-linked polyethylene pipe 4b Hot water outlet of cross-linked polyethylene pipe 5 5A-7A nipple 6 7A - 7A Cheese 7 φ7mm cross-linked polyethylene pipe 8 7A-10A Cheese 9 φ10mm cross-linked polyethylene pipe 10 Double lock joint 10A(4) 11 φ20mm cross-linked polyethylene pipe

Claims

1. A compost heat-utilizing hot water production device that uses the following components A, B, and C for compost fermentation materials that are 100% plant-derived raw materials and contain seed cells containing aerobic soil microorganisms such as actinomycetes, yeasts, and nitrifying bacteria, and that produces hot water at a temperature of 53°C to 73°C and a flow rate of 1.0 L / min to 3.0 L / min. A Height between 1100mm and 1500mm, volume 4m ３ 8m from ３ Metal compost fermentation reactor B. There is a chamber below A into which air can be sent, and the upper plate of the chamber is made of punched metal b with a hole diameter of 4 mm to 8 mm. C. A resin heat exchanger system consisting of 6 to 10 cross-linked polyethylene pipes connected in series, with a total length of 180 to 400 m, and consisting of two systems of cross-linked polyethylene pipes, C-1 and C-2, with the water inlets and outlets of the radiant heat collector pipes connected in parallel. The diameter of the cross-linked polyethylene pipes is 3 mm to 6 mm, and the pipes are wound in a flat circular shape (30 m to 60 m). C-1 A top plate compost fermentation heat collection panel in which the resin heat exchanger sandwiched between metal plate a and punched metal a has a space of 10 to 15 mm C-2 A side inner heat collection panel with a resin heat exchanger installed inside

2. A compost heat-utilizing hot water production system in which the inlets and outlets of the cross-linked polyethylene pipes of the resin heat exchangers of compost fermentation heat-utilizing hot water production equipment are connected in parallel for 4 to 28 units, and converged into polyethylene pipes with a diameter of 16 mm to 32 mm, with the produced hot water temperature being 53°C to 73°C and the flow rate being 5 L / min to 60 L / min.

3. The compost fermentation heat utilization hot water production device of claim 1, which is a registered trademark, is used as the seed fungus to be mixed with the compost fermentation raw material material.

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