Beer production heating system using solar energy

Abstract

The application discloses a beer production heat supply system using solar energy, and relates to the technical field of solar energy and the field of energy saving in beer production. The beer production heat supply system comprises a solar heat collecting module and a multi-grade heat supply module. A hot water outlet of the solar heat collecting module is connected to the multi-grade heat supply module to transmit heat energy to the multi-grade heat supply module. The multi-grade heat supply module comprises a plurality of heat supply units corresponding to different temperature intervals. The hot medium outlet of each heat supply unit is connected to a beer production process processing module with a temperature suitable for the temperature interval of the heat supply unit. The application can meet the multi-grade heat demand of each process processing module in beer production, greatly reduce or even completely eliminate the use amount of coal-fired and gas-fired boilers, eliminate the dependence of each process heat in beer production on fossil energy, and further reduce energy consumption and carbon emission.

Description

Technical Field

[0001] This invention relates to a solar-powered beer production heating system, belonging to the fields of solar energy application and energy-saving technology in beer production. Background Technology

[0002] The beer industry, due to its wet and thermal processing procedures, is a typical high-energy- and high-water-consumption industry. Brewery production processes involve numerous heat demands at varying temperatures and times, such as wort cooling, mashing, filter cleaning, and boiling. These processes require energy of varying grades. Traditionally, relying solely on coal-fired or electric boilers to supply hot water and steam results in poor energy utilization and wastes a significant amount of high-grade heat energy. Furthermore, processes like filter cleaning and boiling generate substantial amounts of waste heat of varying grades, which is directly emitted without being utilized, leading to energy waste, increased carbon emissions, and exacerbated pollution. Therefore, selecting low-cost, low-emission, and low-pollution new energy sources for heat supply to reduce energy costs has become an inevitable choice for the beer production industry. Summary of the Invention

[0003] The purpose of this invention is to provide a solar-powered beer production heating system. Based on the conversion of solar energy, multi-grade heat energy is obtained, and then the heat medium provided by the multi-grade heat energy is transferred to various processing modules in beer production. While meeting the multi-grade heat demand of various beer production processes, it greatly reduces the use of coal-fired and gas-fired boilers, thereby achieving the goal of reducing energy consumption and carbon emissions.

[0004] To achieve the above objectives, the present invention is implemented using the following technical solution.

[0005] This invention provides a solar-powered beer production heating system, comprising: a solar collector module and a multi-grade heating module;

[0006] The hot water output port of the solar collector module is connected to the multi-grade heating module to transfer heat energy to the multi-grade heating module.

[0007] The multi-grade heating module includes multiple heating units corresponding to different temperature ranges. The heat medium output port of each heating unit is connected to a beer production process processing module whose processing temperature is adapted to the temperature range of the heating unit.

[0008] When the solar-powered beer production heating system is in operation, solar energy heats the water stored in the solar collector module. The heated water in the solar collector module is then transferred as heat energy to the multi-grade heating module. The heating temperature of different heating units in the multi-grade heating module corresponds to the temperature required by the beer production process module. Each heating unit transfers heat energy to the beer production process module with the corresponding temperature through a heat medium.

[0009] Optionally, the plurality of heating units corresponding to different temperature ranges include: a high-temperature water heating unit, a medium-temperature water heating unit, a low-temperature water supply unit, and a flash evaporation unit, wherein the temperature ranges of the high-temperature water heating unit, the medium-temperature water heating unit, and the low-temperature water supply unit are much greater than, close to, and much less than 100 degrees Celsius, respectively.

[0010] The hot water output port of the solar collector module is connected to the high-temperature water heating unit;

[0011] The high-temperature water heating unit is used to heat the input hot water under high pressure, and its hot water output port is connected to the medium-temperature water heating unit, the flash evaporation unit, and the gelatinization / saccharification module of the beer production process module, respectively.

[0012] The outlets of the low-temperature water supply unit and the medium-temperature water heating unit are respectively connected to the malt wet grinding process module and the filtration module of the beer production process processing module; the steam outlet of the flash evaporation unit is respectively connected to the boiling module and the gelatinization / saccharification module of the beer production process processing module.

[0013] The outlet of the low-temperature water supply unit is connected to the wort cooling module and the bottle cleaning and soaking module of the beer production process module.

[0014] The solar thermal collector module and the multi-grade heating module, the multi-grade heating module itself, and the multi-grade heating module and the various processing modules of beer production use water or steam as the medium for heat transfer. This rationally coordinates the heat used in the various processes of beer production, realizes the tiered utilization of heat, and improves the energy utilization rate.

[0015] Optionally, the medium-temperature water heating unit is provided with a first heat exchanger, and the water outlet of the high-temperature water heating unit heats the water in the medium-temperature water heating unit by flowing through the first heat exchanger.

[0016] The gelatinization / saccharification module is equipped with a second heat exchanger and a first steam heat exchanger. The water outlet of the high-temperature water heating unit flows through the second heat exchanger to heat the gelatinization / saccharification module; the steam output from the flash evaporation unit flows through the first steam heat exchanger to heat the gelatinization / saccharification module.

[0017] The boiling module is equipped with a second steam heat exchanger, and the steam output from the flash evaporation unit flows through the second steam heat exchanger to heat the boiling module.

[0018] The wort cooling module is equipped with a third heat exchanger. The water from the low-temperature water supply unit flows through the third heat exchanger to cool the wort cooling module. The water from the third heat exchanger is connected to the jar cleaning and soaking module.

[0019] Optionally, the high-temperature water heating unit and the medium-temperature water heating unit are each provided with a water inlet, and the low-temperature water supply unit includes a water inlet pipe and a production line water supply pipe. The water inlet pipe is connected to the water inlets of the high-temperature water heating unit and the medium-temperature water heating unit. The production line water supply pipe is provided with water inlets corresponding to the malt wet grinding module, the filtration module, the malt wort cooling module, and the cleaning and soaking bottle module, respectively.

[0020] The high-temperature water heating unit and the flash evaporation unit are each provided with a return water inlet, and the flash evaporation unit is provided with a condensate outlet. The return water inlet of the high-temperature water heating unit is connected to the outlets of the first heat exchanger and the second heat exchanger, as well as the condensate outlet of the flash evaporation unit. The return water inlet of the flash evaporation unit is connected to the condensate outlets of the first steam heat exchanger and the second steam heat exchanger.

[0021] Optionally, the solar-powered beer production heating system also includes a water replenishment and preheating module;

[0022] The water replenishment and preheating module includes a solar heating unit, a hot water storage tank, and a fourth heat exchanger. The solar heating unit heats the water in the hot water storage tank. The hot water in the hot water storage tank exchanges heat with the low-temperature water supply unit through the fourth heat exchanger.

[0023] By preheating the low-temperature water using the solar heating unit, energy utilization efficiency is further improved and waste of high-grade energy is reduced.

[0024] Optionally, the wort cooling module is equipped with a fifth heat exchanger, and the boiling module is equipped with a steam-water heat exchanger.

[0025] After exchanging heat with the hot water in the hot water storage tank, the water in the low-temperature water supply unit flows sequentially through the fifth heat exchanger and the steam-water heat exchanger before flowing into the high-temperature water heating unit and / or the medium-temperature water heating unit.

[0026] By fully recovering and utilizing the waste heat generated by the processing modules in the beer production process, the goal of energy conservation and emission reduction is achieved, meeting industry needs.

[0027] Optionally, the beer production process module further includes a malt drying device;

[0028] The malt drying device is equipped with a preheating heat exchanger, a first air heater and a second air heater.

[0029] The beer production heating system also includes a water replenishment and preheating module; the water replenishment and preheating module includes a solar heating unit, a hot water storage tank, a fourth heat exchanger, and a water replenishment circulation pipeline;

[0030] The water outlet of the medium-temperature water heating unit heats the airflow inside the malt drying device by flowing through the second air heater;

[0031] The preheating heat exchanger and the first air heater are connected in series through the water replenishment circulation pipeline, and the water replenishment circulation pipeline connecting the outlet of the preheating heat exchanger and the inlet of the first air heater is connected to the fourth heat exchanger.

[0032] The hot water in the hot water storage tank exchanges heat with the water replenishment circulation pipeline through the fourth heat exchanger.

[0033] The outlet of the low-temperature water supply unit is connected to the preheating heat exchanger.

[0034] Optionally, a sixth heat exchanger is provided on the water replenishment circulation pipeline connecting the outlet of the first air heater and the inlet of the preheating heat exchanger.

[0035] The outlet water from the low-temperature water supply unit is connected to the wort cooling module after passing through the sixth heat exchanger. This allows for the collection of residual heat from the water replenishment circulation pipeline for subsequent immersion rinsing.

[0036] Optionally, the malt drying device includes: a drying chamber, a malt layer, a ventilation structure, and a fan;

[0037] The malt layer is disposed inside the drying chamber, and the preheating heat exchanger, the first air heater and the second air heater are disposed inside the ventilation structure.

[0038] The fan is connected to the ventilation structure, which is connected to the drying chamber, so that the airflow pressurized by the fan can enter the drying chamber after passing through the first air heater and the second air heater to dry the malt layer.

[0039] Optionally, the ventilation structure includes: a return air duct, an exhaust air duct, a supply air duct, and a gradually expanding air duct;

[0040] Both the air supply duct and the air exhaust duct are equipped with air valves.

[0041] An air inlet is provided at one end of the air supply duct, and the other end is connected to the gradually expanding air duct. An air outlet connected to the drying chamber is provided at the other end of the gradually expanding air duct. The fan is located at the air inlet of the air supply duct.

[0042] The return air duct inlet is connected to the top of the drying chamber, and the outlet is connected to the exhaust air duct inlet and the supply air duct inlet, respectively. The exhaust air duct outlet and the supply air duct inlet are connected to the outside.

[0043] Optionally, the malt drying device further includes a spin-type turbulent layer disposed in the drying chamber;

[0044] The spin turbulence layer is equipped with a spin turbulence generator;

[0045] And / or, the air supply duct inlet is provided with the rainproof louver, and the return air duct is provided with a condensate tray for recovering the condensate from the preheating heat exchanger;

[0046] And / or, the exterior of the air duct structure is covered with a thermal insulation structure.

[0047] Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

[0048] 1. By utilizing the heat converted from solar energy to generate medium- and high-temperature hot water and steam, the corresponding heat is provided for the processing stages with different processing temperature requirements in the beer production line. This reduces the dependence of beer production processes on fossil fuels for heat use. While meeting the heat needs of various beer production processes, it greatly reduces the use of coal-fired and gas-fired boilers, thereby reducing energy consumption and carbon emissions.

[0049] 2. By rationally coordinating the heat use of various processes in beer production through heat exchange and heat circulation, the tiered utilization of heat has been achieved, greatly improving economic efficiency and energy utilization rate.

[0050] 3. By recovering and reusing the waste heat and water resources generated in some beer production processes, water and energy resources are utilized rationally, while wastewater and carbon emissions are reduced, thus meeting industry needs.

[0051] 4. By setting up a spin-type turbulent layer to strongly rotate and disturb the air in the malt drying device, the malt in close contact within the malt layer is suspended, which greatly increases the contact area between the malt and the air, allowing the malt to be dried more thoroughly. Attached Figure Description

[0052] Figure 1 The diagram shown is a schematic representation of a beer production heating system utilizing solar energy for wet malt milling, as described in one embodiment of the present invention.

[0053] Figure 2 The diagram shown is a schematic representation of a beer production heating system that utilizes solar energy and waste heat recovery in a wet malt milling process according to an embodiment of the present invention.

[0054] Figure 3The diagram shown is a schematic representation of a beer production heating system utilizing solar energy for dry malt grinding, as described in one embodiment of the present invention.

[0055] Figure 4 The diagram shown is a structural schematic of a malt drying device in one embodiment of the present invention.

[0056] Figure 5 The above is a top view of a spin turbulence layer in one embodiment of the present invention;

[0057] Figure 6 The above is a schematic diagram of the structure of a spin turbulence generator in one embodiment of the present invention.

[0058] In the diagram: 1. Vacuum tube collector; 2. High-pressure heating water tank; 3. Medium-temperature hot water tank; 4. First heat exchanger; 4a. First steam heat exchanger; 4b. Second steam heat exchanger; 4c. Fifth heat exchanger; 4d. Preheating heat exchanger; 4f. First air heater; 4e. Second air heater; 5. Flash tank; 6. Temperature-controlled electric heater; 7. Second heat exchanger; 8. Third heat exchanger; 9a, 9b. High-pressure hot water supply pipes; 10a, 10b. High-pressure hot water return pipes; 11. High-pressure hot water outlet pipes; 12. Saturated water inlet pipes; 13a, 13b. Steam pipes; 14a, 14b. Condensate pipes; 15a, 15b. 15c. Medium-temperature hot water supply pipe; 16. Tap water supply pipe; 17. Tap water replenishment pipe; 18. Mixing pipe a; 19. Mixing pipe b; 20. Low-temperature water pipe; 21. Direct expansion solar heat pump; 22. Hot water storage tank; 23a. Fourth heat exchanger; 23b. Sixth heat exchanger; 24. Steam-water heat exchanger; 25. Hot water storage tank supply pipe; 26. Hot water storage tank return pipe; 27, 27a, 27b. Level I heating water supply pipe; 28. Level II heating water supply pipe; 29. ​​Level III heating water supply pipe; 30. Preheating water supply pipe; 31. Level I heating return water pipe for drying chamber; 32. Level II heating return water pipe for drying chamber; 33. Drying chamber; 34. Spinning turbulent layer; 35. Malt layer; 36. Return air duct; 37. Exhaust air duct; 38. Supply air duct; 39. Air valve; 40. Fan; 41. Rainproof louvers; 42. Gradually expanding air duct; 43. Air outlet; 44. Condensate tray; 45. Spinning turbulent flow device; 46. Ring; 47. Reinforcing rib; 48. Rotating shaft. Detailed Implementation

[0059] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations thereof. In the absence of conflict, the embodiments of the present invention and the technical features in the embodiments can be combined with each other.

[0060] The term "and / or" simply describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0061] Example 1

[0062] This embodiment describes a solar-powered beer production heating system, combined with... Figures 1 to 3 The system includes a solar thermal collector module and a multi-grade heating module; the hot water output port of the solar thermal collector module is connected to the multi-grade heating module to transfer heat energy to the multi-grade heating module; the multi-grade heating module includes multiple heating units corresponding to different temperature ranges, and the heat medium output port of each heating unit is connected to a beer production process processing module whose processing temperature is adapted to the temperature range of the heating unit.

[0063] In this embodiment, solar energy heats the water stored in the solar collector module. The heat energy of the heated water in the solar collector module is then transferred to the multi-grade heating module. The multi-grade heating module is configured with different heating units whose heating temperatures correspond to the temperatures required by the beer production process modules. Each heating unit transfers heat energy to the beer production process modules corresponding to its temperature through a heat medium. This realizes a system that provides multi-grade heat energy to the beer production line based on solar energy, greatly reducing the use of coal-fired and gas-fired boilers and lowering energy consumption and carbon emissions.

[0064] Example 2

[0065] Based on Example 1, and referring to Figure 1 The following design was made in this embodiment.

[0066] The multiple heating units corresponding to different temperature ranges include: a high-temperature water heating unit, a medium-temperature water heating unit, a low-temperature water supply unit, and a flash evaporation unit. The temperature ranges of the high-temperature water heating unit, the medium-temperature water heating unit, and the low-temperature water supply unit are respectively much greater than, close to, and much less than 100 degrees Celsius. The hot water output port of the solar collector module is connected to the high-temperature water heating unit. The high-temperature water heating unit is used to heat the input hot water under high pressure, and its hot water output port is connected to the medium-temperature water heating unit, the flash evaporation unit, and the gelatinization / saccharification module of the beer production process module. The water outlets of the low-temperature water supply unit and the medium-temperature water heating unit are respectively connected to the malt wet grinding process module and the filtration module of the beer production process module. The steam outlet of the flash evaporation unit is respectively connected to the boiling module and the gelatinization / saccharification module of the beer production process module. The water outlet of the low-temperature water supply unit is connected to the wort cooling module and the bottle cleaning and soaking module of the beer production process module.

[0067] To enable the multi-grade heating module to provide heat media for different temperature ranges, the medium-temperature water heating unit is equipped with a first heat exchanger 4. Water from the high-temperature water heating unit flows through the first heat exchanger 4 to heat the water in the medium-temperature water heating unit. The gelatinization / saccharification module is equipped with a second heat exchanger 7 and a first steam heat exchanger 4a. Water from the high-temperature water heating unit flows through the second heat exchanger 7 to heat the gelatinization / saccharification module. The steam output from the flash evaporation unit flows through the first... A steam heat exchanger 4a supplies heat to the gelatinization / saccharification module; a second steam heat exchanger 4b is provided in the boiling module, through which the steam output from the flash evaporation unit flows to heat the boiling module; a third heat exchanger 8 is provided in the wort cooling module, through which the outlet water from the low-temperature water supply unit flows to cool the wort cooling module; the outlet water from the third heat exchanger absorbs the heat generated by the wort cooling and then flows to the cleaning and immersion flask module to optimize the cleaning and immersion effect.

[0068] The high-temperature water heating unit and the medium-temperature water heating unit are each equipped with a water inlet. The low-temperature water supply unit includes a water inlet pipe and a production line water supply pipe. The water inlet pipe is connected to the water inlets of the high-temperature water heating unit and the medium-temperature water heating unit. The production line water supply pipe is equipped with water inlets corresponding to the malt wet grinding module, the filtration module, the malt wort cooling module, and the cleaning and soaking bottle module, respectively. The high-temperature water heating unit and the flash evaporation unit are each equipped with a return water inlet. The flash evaporation unit is equipped with a condensate outlet. The return water inlet of the high-temperature water heating unit is connected to the outlets of the first heat exchanger 4 and the second heat exchanger 7, as well as the condensate outlet of the flash evaporation unit. The return water inlet of the flash evaporation unit is connected to the condensate outlets of the first steam heat exchanger 4a and the second steam heat exchanger 4b.

[0069] In this embodiment, the solar thermal collector module uses a vacuum tube collector 1, the high-temperature water heating unit uses a high-pressure heating water tank 2, the medium-temperature water heating unit uses a medium-temperature hot water tank 3, the low-temperature water supply unit can use a low-temperature water tank or directly introduce external low-temperature water, such as tap water, through pipelines, the flash evaporation unit uses a flash evaporation tank 5, and the first heat exchanger 4, the second heat exchanger 7, the third heat exchanger 8, the first steam heat exchanger 4a, and the second steam heat exchanger 4b are all coil heat exchangers.

[0070] The outlet of the vacuum tube collector 1 is connected to the inlet of the high-pressure heating water tank 2 via a collector outlet pipe; the high-pressure hot water outlet of the high-pressure heating water tank 2 is connected to the high-pressure hot water inlet of the medium-temperature hot water tank 3 via a high-pressure hot water supply pipe 9a; the outlet of the medium-temperature hot water tank 3 is connected to the return water inlet of the high-pressure heating water tank 2 via a high-pressure hot water return pipe 10a; the high-pressure hot water outlet of the high-pressure heating water tank 2 is connected to the inlet of the first heat exchanger 4 via a high-pressure hot water supply pipe 9b; the outlet of the first heat exchanger 4 is connected to the return water inlet of the high-pressure heating water tank 2 via a high-pressure hot water return pipe 10b; the high-pressure hot water outlet of the high-pressure heating water tank 2 is connected to the high-pressure hot water inlet of the flash tank 5 via a high-pressure hot water outlet pipe 11; the high-temperature steam outlet of the flash tank 5 is connected to the inlet of the first steam heat exchanger 4a via a steam pipe 13a; the outlet of the first steam heat exchanger 4a is connected to the return water inlet of the flash tank 5 via a condensate pipe 14a; the flash tank 5... The high-temperature steam outlet is connected to the inlet of the second steam heat exchanger 4b via steam pipe 13b; the outlet of the second steam heat exchanger 4b is connected to the return water inlet of the flash tank 5 via condensate pipe 14b; the saturated water outlet of the flash tank 5 is connected to the saturated water inlet of the high-pressure heating water tank 2 via saturated water inlet pipe 12; the outlet of the low-temperature water supply unit is connected to the malt wet crushing process and the filtration process via the production line water supply pipe, i.e., the tap water supply pipe 16, and the outlet of the medium-temperature hot water tank via the medium-temperature hot water supply pipes 15a and 15b, respectively, via mixing pipes a18 and b19; the outlet of the low-temperature water supply unit is connected to the inlet of the third heat exchanger 8 via the tap water supply pipe 16; the outlet of the third heat exchanger 8 is connected to the cleaning and immersion bottle process via the low-temperature water pipe 20; the outlet of the low-temperature water supply unit is connected to the water inlet of the high-pressure heating water tank 2 and the medium-temperature hot water tank 3 via the water supply pipe, i.e., the tap water supply pipe 17.

[0071] In this embodiment, the following energy transfer and utilization process can be achieved during application: Hot water in the vacuum tube collector 1 is heated by solar energy. The hot water flows into the high-pressure heating tank 2, which is connected to a temperature-controlled electric heater 6, heating the hot water to approximately 160°C. The high-pressure hot water in the high-pressure heating tank 2 flows into the medium-temperature hot water tank 3, passing through the first heat exchanger 4 built into the medium-temperature hot water tank 3, heating the hot water to approximately 95°C. It then flows through the second heat exchanger 7 for the gelatinization / saccharification process, providing heat to the gelatinization / saccharification process. The return water flows back to the high-pressure heating tank 2. The high-pressure hot water in the high-pressure heating tank 2 flows into the flash tank 5. The high-temperature, high-pressure steam in the flash tank 5 flows through the second steam heat exchanger 4b for the boiling process, providing heat to the boiling process. The steam then flows through the first steam heat exchanger 4b for the gelatinization / saccharification process... a) Heat is supplied to the gelatinization / saccharification process. The condensate flows back to the flash tank 5. The condensate in the flash tank 5 flows back to the high-pressure heating water tank 2. The high-pressure heating water tank 2 collects the return water and flows it back to the vacuum tube collector 1. The medium-temperature hot water in the medium-temperature hot water tank 3 and the tap water at about 15°C in the tap water supply pipe 16 are mixed in the mixing pipe a18 to form hot water at about 60°C, which heats the wet malt grinding process. They are also mixed in the mixing pipe b19 to form hot water at about 80°C, which heats the filtration process. The tap water supply pipe 17 is connected to the high-pressure heating water tank 2 and the medium-temperature hot water tank 3 respectively, which replenishes water to the high-pressure heating water tank 2 and the medium-temperature hot water tank 3. The tap water at about 15°C in the tap water supply pipe 16 flows through the third heat exchanger 8 to cool the wort cooling process. The low-temperature water at about 45°C after heat exchange is supplied to the cleaning and immersion processes through the low-temperature water pipe 20.

[0072] All of the above pipelines are equipped with shut-off valves and check valves to facilitate water flow control.

[0073] Example 3

[0074] Based on Example 2, and referring to Figure 2 The following design was made in this embodiment.

[0075] To further improve energy efficiency and reduce the waste of high-grade energy, the solar-powered beer production heating system also includes a water replenishment and preheating module. The water replenishment and preheating module includes a solar heating unit, a hot water storage tank 22, and a fourth heat exchanger 23a. The solar heating unit heats the water in the hot water storage tank 22. The hot water in the hot water storage tank 22 exchanges heat with the low-temperature water supply unit through the fourth heat exchanger 23a.

[0076] The malt juice cooling module is equipped with a fifth heat exchanger 4c, and the boiling module is equipped with a steam-water heat exchanger 24. After exchanging heat with the hot water in the hot water storage tank 22, the water in the low-temperature water supply unit flows sequentially through the fifth heat exchanger 4c and the steam-water heat exchanger 24 before flowing into the high-temperature water heating unit and / or the medium-temperature water heating unit.

[0077] In this embodiment, the solar heating unit is a direct expansion solar heat pump 21, the fourth heat exchanger 23a is a plate heat exchanger, and the fifth heat exchanger 4c is a coil heat exchanger.

[0078] The direct expansion solar heat pump 21 is connected to the hot water storage tank 22 via the inlet and outlet pipes of the condenser; the hot water outlet of the hot water storage tank 22 is connected to the hot water inlet of the fourth heat exchanger 23a via the hot water storage tank supply pipe 25; the return water outlet of the fourth heat exchanger 23a is connected to the return water inlet of the hot water storage tank 22 via the hot water storage tank return water pipe 26; the outlet of the tap water supply pipe 17 is connected to the supply water inlet of the fourth heat exchanger 23a; the supply water outlet of the fourth heat exchanger 23a is connected to the fifth heat exchanger 4 via the first-stage heating supply water pipe 27a. The inlet of heat exchanger 4c is connected to the inlet of steam-water heat exchanger 24 via a stage II heating water supply pipe 28. The outlet of steam-water heat exchanger 24 is connected to the water supply inlets of high-pressure heating water tank 2 and medium-temperature hot water tank 3 via a stage III heating water supply pipe 29. The water supply outlet of heat exchanger 23a is connected to the medium-temperature hot water supply pipe 15a via a stage I heating water supply pipe 27b. The medium-temperature hot water supply pipe 15b is then connected to the malt wet grinding process via a mixing pipe a18 and to the filtration process via a mixing pipe b19.

[0079] The direct expansion solar heat pump 21 uses solar energy to heat the hot water in the storage tank 22 to 60°C. The hot water in the storage tank 22 flows through the fourth heat exchanger 23a to heat the makeup water in the tap water supply pipe 17, and the return water flows back to the storage tank 22. The makeup water in the tap water supply pipe 17 at 15°C flows through the fourth heat exchanger 23a for stage I heating, heating the makeup water to 50°C. It then flows through the fifth heat exchanger 4c to recover waste heat from the wort cooling process, performing stage II heating to heat the makeup water to 90°C. The water flows through the steam-water heat exchanger 24, recovers the waste heat from the boiling process, and undergoes stage III heating to heat the makeup water to 95°C before flowing into the high-pressure heating water tank 2 and the medium-temperature hot water tank 3. The makeup water in the tap water makeup pipe 17 flows through the plate heat exchanger 23 and undergoes stage I heating. The 50°C makeup water mixes with the 95°C hot water in the medium-temperature hot water supply pipe 15a in the mixing pipe a18 to form 60°C hot water, which is used to heat the malt wet crushing process. It also mixes with the 95°C hot water in the medium-temperature hot water supply pipe 15b in the mixing pipe b19 to form 80°C hot water, which is used to heat the filtration process.

[0080] All of the above pipelines are equipped with shut-off valves and check valves to facilitate water flow control.

[0081] Example 4

[0082] Based on Example 2, and referring to Figure 3 This embodiment also incorporates the following design.

[0083] The beer production process module also includes a malt drying device; the malt drying device is equipped with a preheating heat exchanger 4d, a first air heater 4f, and a second air heater 4e; the beer production heating system also includes a water replenishment preheating module; the water replenishment preheating module includes a solar heating unit, a hot water storage tank 22, a fourth heat exchanger 23a, and a water replenishment circulation pipeline; the outlet water of the medium-temperature water heating unit heats the airflow in the malt drying device by flowing through the second air heater 4e; the preheating heat exchanger 4d and the first air heater 4f are connected in series through the water replenishment circulation pipeline, and the water replenishment circulation pipeline connecting the outlet of the preheating heat exchanger 4d and the inlet of the first air heater 4f is connected to the fourth heat exchanger 23a; the hot water in the hot water storage tank 22 exchanges heat with the water replenishment circulation pipeline through the fourth heat exchanger 23a; the outlet of the low-temperature water supply unit is connected to the preheating heat exchanger 4d.

[0084] A sixth heat exchanger 23b is installed on the water replenishment circulation pipeline connecting the outlet of the first air heater 4f and the inlet of the preheating heat exchanger 4d; the water outlet of the low-temperature water supply unit is connected to the wort cooling module after passing through the sixth heat exchanger 23b.

[0085] In this embodiment, the preheating heat exchanger 4d, the first air heater 4f, and the second air heater 4e are finned tube heat exchangers, and the sixth heat exchanger 23b is a plate heat exchanger.

[0086] The outlet of the medium-temperature hot water tank 3 is connected to the inlet of the second air heater 4e via the medium-temperature hot water supply pipe 15c; the outlet of the second air heater 4e is connected to the inlet of the medium-temperature hot water tank 3 via the drying chamber stage II heating return water pipe 32; the outlet of the tap water supply pipe 17 is connected to the inlet of the preheating heat exchanger 4d; the outlet of the preheating heat exchanger 4d is connected to the water supply inlet of the fourth heat exchanger 23a via the preheating water supply pipe 30; the water supply outlet of the fourth heat exchanger 23a is connected to the inlet of the first air heater 4f via the stage I heating water supply pipe 27; the outlet of the first air heater 4f is connected to the return water inlet of the sixth heat exchanger 23b via the drying chamber stage I heating return water pipe 31; the return water outlet of the sixth heat exchanger 23b is connected to the inlet of the tap water supply pipe 17.

[0087] The low-temperature water output from the low-temperature water supply unit flows sequentially through the preheating heat exchanger 4d, the fourth heat exchanger 23a, the first air heater 4f, and the sixth heat exchanger 23b to heat the malt drying device and the airflow inside the malt drying device.

[0088] All of the above pipelines are equipped with shut-off valves and check valves to facilitate water flow control.

[0089] Example 5

[0090] Based on Example 4, and referring to Figures 4-6 The following design was made in this embodiment.

[0091] The malt drying device includes: a drying chamber 33, a malt layer 35, a ventilation structure, and a fan 40; the malt layer 35 is disposed inside the drying chamber 33, and the preheating heat exchanger 4d, the first air heater 4f, and the second air heater 4e are disposed inside the ventilation structure; the fan 40 is connected to the ventilation structure, and the ventilation structure is connected to the drying chamber 33, so that the airflow pressurized by the fan 40 can enter the drying chamber 33 after passing through the first air heater 4f and the second air heater 4e to dry the malt layer 35.

[0092] The ventilation structure includes: a return air duct 36, an exhaust air duct 37, a supply air duct 38, and a gradually expanding air duct 42; both the supply air duct 38 and the exhaust air duct 37 are equipped with air valves 39; one end of the supply air duct 38 is provided with an air inlet, and the other end is connected to the gradually expanding air duct 42, the other end of the gradually expanding air duct 42 is provided with an air outlet 43 connected to the drying chamber 33; the fan 40 is located at the air inlet of the supply air duct 38; the inlet of the return air duct 36 is connected to the top of the drying chamber 33, and the outlet is connected to the inlet of the exhaust air duct 37 and the inlet of the supply air duct 38, respectively, and the outlet of the exhaust air duct 37 and the inlet of the supply air duct 38 are connected to the outside.

[0093] The malt drying device further includes a spin-type turbulent flow layer 34 disposed in the drying chamber 33; the spin-type turbulent flow layer 34 is provided with a spin-type turbulence generator 45; and / or, the inlet of the air supply duct 38 is provided with the rainproof louver 41, and the return air duct 36 is provided with a condensate tray 44 for recovering the condensate from the preheating heat exchanger 4d; and / or, the exterior of the duct structure is covered with a heat insulation structure.

[0094] In this embodiment, the drying chamber 33 is cylindrical, the malt layer 35 is a perforated metal plate, and the air duct structure is made of metal.

[0095] The fan 40 is placed at the inlet of the air supply duct 38. Outside air and return air are pressurized by the fan 40 and heated by the first air heater 4f and the second air heater 4e. They then flow into the drying chamber 33 through the air supply duct 38, the gradually expanding air duct 42, and the air outlet 43 which is inclined upward at 60° to the horizontal. The hot air in the drying chamber 33 flows through the spin-type turbulent layer 34 and the malt layer 35 in sequence to fully dry the malt. The inlet of the return air duct 36 is connected to the top of the drying chamber 33. The hot air after drying the malt flows into the return air duct 36. The outlet of the return air duct 36 is connected to the inlet of the exhaust air duct 37 and the inlet of the air supply duct 38. The outlet of the exhaust air duct 37 and the inlet of the air supply duct 38 are connected to the atmospheric environment.

[0096] The preheating heat exchanger 4d is placed in the return air duct to recover the waste heat of the return air and to dry the return air. The condensate pan 44 is placed in the return air duct 36 to recover the condensate generated after the return air exchanges heat with the preheating heat exchanger 4d. The return air duct 36, exhaust air duct 37, supply air duct 38, and gradually expanding air duct 42 are all covered with external insulation. The exhaust air duct 37 and supply air duct 38 are equipped with air valves 39. The inlet of the supply air duct 38 is equipped with rainproof louvers 41.

[0097] The spin turbulence layer 34 is embedded with several spin turbulence generators 45. Each spin turbulence generator 45 consists of a ring 46, a reinforcing rib 47, a rotating shaft 48, and blades. It is made of stainless steel, which makes the airflow distribution in the drying chamber 33 uniform and gives the hot air strong rotational disturbance, thereby increasing the contact area between the air and the malt and allowing the malt to dry fully.

[0098] In summary, this invention generates heat energy through solar energy and then converts the obtained single-form heat energy into multi-grade heat energy through various heat exchange methods. The various heating temperatures of this multi-grade heat energy are adapted to the temperatures required by each process in the beer production line. Hot water or steam is used as the heat medium to transfer the multi-grade heat energy to the beer production process modules corresponding to their respective temperatures. This achieves the cascade utilization of heat, meets the multi-grade heat demand of each process in the beer production line, eliminates the dependence of each process in the beer production line on fossil fuels for heat use, and reduces energy consumption and carbon emissions.

[0099] The embodiments of the present invention have been described above with reference to the accompanying drawings. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present invention.

Claims

1. A solar-powered beer production heating system, characterized in that, include: Solar thermal collector modules, multi-grade heating modules, and water replenishment and preheating modules; The hot water output port of the solar collector module is connected to the multi-grade heating module to transfer heat energy to the multi-grade heating module. The multi-grade heating module includes multiple heating units corresponding to different temperature ranges, including: a high-temperature water heating unit, a medium-temperature water heating unit, a low-temperature water heating unit, and a flash evaporation unit; the heat medium output port of each heating unit is connected to a beer production process processing module whose processing temperature is adapted to the temperature range of the heating unit. The hot water output port of the solar collector module is connected to the high-temperature water heating unit; the high-temperature water heating unit is used to heat the input hot water under high pressure, and its hot water output port is connected to the medium-temperature water heating unit, the flash evaporation unit and the gelatinization / saccharification module of the beer production process module respectively. The medium-temperature water heating unit is equipped with a first heat exchanger, and the water from the high-temperature water heating unit heats the water in the medium-temperature water heating unit by flowing through the first heat exchanger. The outlets of the low-temperature water supply unit and the medium-temperature water heating unit are respectively connected to the malt wet grinding module and the filtration module of the beer production process module; the outlet of the low-temperature water supply unit is also connected to the wort cooling module and the bottle cleaning and soaking module of the beer production process module; the steam outlet of the flash evaporation unit is respectively connected to the boiling module and the gelatinization / saccharification module of the beer production process module. The gelatinization / saccharification module is equipped with a second heat exchanger and a first steam heat exchanger. The water outlet of the high-temperature water heating unit flows through the second heat exchanger to heat the gelatinization / saccharification module; the steam output from the flash evaporation unit flows through the first steam heat exchanger to heat the gelatinization / saccharification module. The boiling module is equipped with a second steam heat exchanger, and the steam output from the flash evaporation unit flows through the second steam heat exchanger to heat the boiling module. The wort cooling module is equipped with a third heat exchanger, and the water from the low-temperature water supply unit flows through the third heat exchanger to cool the wort cooling module; the water outlet of the third heat exchanger is connected to the bottle cleaning and soaking module; the beer production process module also includes a malt drying device; the malt drying device is equipped with a preheating heat exchanger, a first air heater and a second air heater. The water replenishment and preheating module includes a solar heating unit, a hot water storage tank, a fourth heat exchanger, and a water replenishment circulation pipeline; The water outlet of the medium-temperature water heating unit heats the airflow inside the malt drying device by flowing through the second air heater; The preheating heat exchanger and the first air heater are connected in series through the water replenishment circulation pipeline, and the water replenishment circulation pipeline connecting the outlet of the preheating heat exchanger and the inlet of the first air heater is connected to the fourth heat exchanger. The hot water in the hot water storage tank exchanges heat with the water replenishment circulation pipeline through the fourth heat exchanger. The outlet of the low-temperature water supply unit is connected to the preheating heat exchanger.

2. The solar-powered beer production heating system according to claim 1, characterized in that, The high-temperature water heating unit and the medium-temperature water heating unit are each provided with a water inlet. The low-temperature water supply unit includes a water inlet pipe and a production line water supply pipe. The water inlet pipe is connected to the water inlets of the high-temperature water heating unit and the medium-temperature water heating unit. The production line water supply pipe is provided with water inlets corresponding to the malt wet grinding module, the filtration module, the malt wort cooling module, and the cleaning and soaking bottle module, respectively. The high-temperature water heating unit and the flash evaporation unit are each provided with a return water inlet, and the flash evaporation unit is provided with a condensate outlet. The return water inlet of the high-temperature water heating unit is connected to the outlets of the first heat exchanger and the second heat exchanger, as well as the condensate outlet of the flash evaporation unit. The return water inlet of the flash evaporation unit is connected to the condensate outlets of the first steam heat exchanger and the second steam heat exchanger.

3. The solar-powered beer production heating system according to claim 1 or 2, characterized in that, In the water replenishment and preheating module, the solar heating unit heats the water in the hot water storage tank; the hot water in the hot water storage tank exchanges heat with the low-temperature water supply unit through the fourth heat exchanger.

4. The solar-powered beer production heating system according to claim 3, characterized in that, The wort cooling module is equipped with a fifth heat exchanger, and the boiling module is equipped with a steam-water heat exchanger. After exchanging heat with the hot water in the hot water storage tank, the water in the low-temperature water supply unit flows sequentially through the fifth heat exchanger and the steam-water heat exchanger before flowing into the high-temperature water heating unit and / or the medium-temperature water heating unit.

5. The solar-powered beer production heating system according to claim 1, characterized in that, A sixth heat exchanger is installed on the water supply circulation pipeline connecting the outlet of the first air heater and the inlet of the preheating heat exchanger. The outlet water from the low-temperature water supply unit is connected to the wort cooling module after passing through the sixth heat exchanger.

6. The solar-powered beer production heating system according to claim 1, characterized in that, The malt drying device includes: a drying chamber, a malt layer, a ventilation structure, and a fan; The malt layer is disposed inside the drying chamber, and the preheating heat exchanger, the first air heater and the second air heater are disposed inside the ventilation structure. The fan is connected to the ventilation structure, which is connected to the drying chamber, so that the airflow pressurized by the fan can enter the drying chamber after passing through the first air heater and the second air heater to dry the malt layer.

7. The solar-powered beer production heating system according to claim 6, characterized in that, The ventilation structure includes: a return air duct, an exhaust air duct, a supply air duct, and a gradually expanding air duct; Both the air supply duct and the air exhaust duct are equipped with air valves. An air inlet is provided at one end of the air supply duct, and the other end is connected to the gradually expanding air duct. An air outlet connected to the drying chamber is provided at the other end of the gradually expanding air duct. The fan is located at the air inlet of the air supply duct. The return air duct inlet is connected to the top of the drying chamber, and the outlet is connected to the exhaust air duct inlet and the supply air duct inlet, respectively. The exhaust air duct outlet and the supply air duct inlet are connected to the outside.

8. The solar-powered beer production heating system according to claim 7, characterized in that, The malt drying device also includes a spin-type turbulent layer disposed in the drying chamber; The spin turbulence layer is equipped with a spin turbulence generator; And / or, the air supply duct inlet is provided with rainproof louvers, and the return air duct is provided with a condensate tray for recovering the condensate from the preheating heat exchanger. And / or, the exterior of the air duct structure is covered with a thermal insulation structure.

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