A device for improving heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon

Abstract

The present invention discloses a device for improving the heat transfer efficiency of a soil heat storage body by utilizing the condensation phenomenon, including an air intake component, wherein the air intake component passes through the insulation layer soil from the ground surface, a heat storage channel for heat storage is arranged under the insulation layer soil, the lower end of the air intake component is connected to the heat storage channel, and the other end of the heat storage channel is connected to the exhaust component, and the exhaust component passes through the insulation layer soil from bottom to top. The soil source heat pump of the present invention avoids the problem of reduced heat storage efficiency caused by condensed water due to the condensation phenomenon, and can efficiently store heat in the summer when the air temperature and air moisture content are the highest. The soil source heat pump utilizes permeable bricks to absorb condensed water when the condensation phenomenon occurs, forming heat and mass transfer to store part of the latent heat in the air into the soil. In the present invention, after the permeable bricks absorb a certain amount of water during condensation, they change from dry bricks to wet bricks, which improves the heat exchange efficiency. At the same time, the permeable bricks are honeycomb-shaped, and the heat transfer coefficient will continue to increase at high wind speeds, ensuring the heat transfer efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of soil heat storage, and in particular relates to a device for improving the heat transfer efficiency of a soil heat storage body by utilizing the condensation phenomenon. Background Art

[0002] Soil source heat pump is a device that uses the underground constant temperature layer soil to store and release heat. Compared with ground source heat pump, it has the advantages of low cost, wide source of heat storage medium, and minimal damage to the environment. Soil source heat pump can store low-grade heat energy such as air in the soil of the constant temperature layer, and convert low-grade heat energy into high-grade heat energy for heating through heat pump.

[0003] Obtaining energy from the air is a low-investment and low-operating-cost method. However, in summer, condensation often occurs when air enters the air duct and exchanges heat with the soil. The occurrence of condensation not only produces a liquid film on the inner surface of the air duct to increase the thermal resistance of heat exchange, but also the evaporation of condensed water will absorb the heat stored in the soil. Therefore, the existence of condensation reduces the heat storage efficiency of the soil.

[0004] Therefore, it is particularly important to develop a device that can avoid condensation and reduce the soil heat storage efficiency. Summary of the invention

[0005] The present invention is proposed to solve the problems existing in the prior art, and its purpose is to provide a device for improving the heat transfer efficiency of a soil heat storage body by utilizing the condensation phenomenon.

[0006] The technical solution of the present invention is: a device for improving the heat transfer efficiency of a soil heat storage body by utilizing the condensation phenomenon, comprising an air intake component, wherein the air intake component passes through a heat-insulating layer of soil from the ground surface, a heat storage channel for heat storage is provided below the heat-insulating layer of soil, the lower end of the air intake component is connected to the heat storage channel, and the other end of the heat storage channel is connected to an exhaust component, and the exhaust component passes through the heat-insulating layer of soil from bottom to top.

[0007] Furthermore, the air intake assembly includes an air duct that passes through the soil of the thermal insulation layer, and the lower end of the air duct is connected to the upper end of the heat storage channel.

[0008] Furthermore, a transverse elbow is formed at the top of the air duct, and the transverse elbow is connected to the air inducing device.

[0009] Furthermore, the air inducing device is a fan, the fan is placed horizontally, and the free end of the horizontal elbow is connected to the air outlet end of the fan.

[0010] Furthermore, an air intake stop valve for controlling the air entering the heat storage channel is provided at the lower end of the air duct.

[0011] Furthermore, the heat storage channel is composed of permeable bricks, and the inner cavity of the heat storage channel is a rectangular air duct.

[0012] Furthermore, the permeable bricks include transition permeable bricks and connecting permeable bricks, and permeable holes are formed on the side walls of the transition permeable bricks and the connecting permeable bricks.

[0013] Furthermore, a connecting hole connected to the air duct or the outlet air duct is formed on the top of the transition permeable brick, and a rectangular channel hole is formed on the side wall of one side of the transition permeable brick, and the rectangular channel hole is connected to the connecting permeable brick.

[0014] Furthermore, the interconnected permeable brick includes a rectangular through hole penetrating through two opposite side walls.

[0015] Furthermore, the exhaust assembly includes an outlet air duct, the lower end of the outlet air duct is connected to the heat storage channel, and the upper end of the outlet air duct passes through the insulation layer soil and protrudes out of the ground.

[0016] The beneficial effects of the present invention are as follows:

[0017] The soil source heat pump of the present invention avoids the problem of reduced heat storage efficiency due to condensed water caused by condensation, and can efficiently store heat in the summer when the air temperature and air moisture content are the highest. The soil source heat pump uses permeable bricks to absorb condensed water when condensation occurs, forming heat and mass transfer to store part of the latent heat in the air in the soil.

[0018] In the present invention, after the permeable brick absorbs a certain amount of water during condensation, it changes from a dry brick to a wet brick, thereby improving the heat exchange efficiency. At the same time, the permeable brick is honeycomb-shaped, and the heat transfer coefficient will continue to increase at high wind speeds, thereby ensuring the heat transfer efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the permeable brick in the present invention;

[0021] in:

[0022] 1 Dust cover 2 Bracket

[0023] 3 fans 4 air ducts

[0024] 5 Air intake stop valve 6 Air duct

[0025] 7 Insulation layer soil 8 Inlet air dry bulb thermometer

[0026] 9 Inlet wet bulb thermometer 10 Permeable brick

[0027] 11 Water permeable hole 12 outlet mask

[0028] 13 outlet air duct 14 outlet stop valve

[0029] 15 Outlet dry bulb temperature 16 Outlet wet bulb thermometer. DETAILED DESCRIPTION

[0030] Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and embodiments:

[0031] like Figure 1 to Figure 2 As shown, a device for improving the heat transfer efficiency of a soil heat storage body by utilizing the condensation phenomenon comprises an air intake component, wherein the air intake component passes through a heat-insulating layer of soil 7 from the ground surface, a heat storage channel for heat storage is provided below the heat-insulating layer of soil 7, the lower end of the air intake component is connected to the heat storage channel, and the other end of the heat storage channel is connected to an exhaust component, and the exhaust component passes through the heat-insulating layer of soil 7 from bottom to top.

[0032] The air intake assembly includes an air duct 4 that passes through the insulation layer soil 7, and the lower end of the air duct 4 is connected to the upper end of the heat storage channel.

[0033] A transverse elbow is formed at the top of the air duct 4, and the transverse elbow is connected to the air inducing device.

[0034] The air inducing device is a fan 3 , which is placed horizontally, and the free end of the horizontal elbow is connected to the air outlet end of the fan 3 .

[0035] An air intake stop valve 5 for controlling the air entering the heat storage channel is disposed at the lower end of the air duct 4 .

[0036] The heat storage channel is composed of permeable bricks 10 , and the inner cavity of the heat storage channel is a rectangular air duct 6 .

[0037] The permeable bricks 10 include transition permeable bricks and connecting permeable bricks. Permeable holes 11 are formed at the side walls of the transition permeable bricks and the connecting permeable bricks.

[0038] A connecting hole connected to the air duct 4 or the outlet air duct 13 is formed on the top of the transition permeable brick, and a rectangular channel hole is formed on the side wall of one side of the transition permeable brick, and the rectangular channel hole is connected to the connecting permeable brick.

[0039] The interconnecting permeable brick includes a rectangular through hole penetrating through two opposite side walls.

[0040] The exhaust assembly includes an outlet air duct 13, the lower end of the outlet air duct 13 is connected to the heat storage channel, and the upper end of the outlet air duct 13 passes through the insulation layer soil 7 and protrudes out of the ground surface.

[0041] Specifically, in order to meet the clear height requirement, the fan 3 is provided with a bracket 2 on the ground, and the fan 3 is arranged on the bracket 2 .

[0042] Four corner through holes are formed in the bracket 2, and the four corner through holes correspond to the four foot mounting holes of the fan 3 one by one, and the fan 3 and the bracket 2 are fixed by bolt and nut assemblies.

[0043] The air outlet end of the fan 3 is connected to the transverse elbow of the air duct 4 through a connecting flange. A sealing groove is formed at the air outlet end of the fan 3. A sealing ring is arranged in the sealing groove. The air outlet end of the fan 3 and the flange in the transverse elbow of the air duct 4 press the sealing ring.

[0044] A dust cover 1 is provided at the air inlet end of the fan 3, and the dust cover 1 filters dust for the intake air.

[0045] The lower end of the air duct 4 is communicated with the top of the transition permeable brick.

[0046] An outlet stop valve 14 for controlling exhaust gas is disposed at the lower end of the outlet air duct 13 .

[0047] Specifically, the air outlet stop valve 14 and the air inlet stop valve 5 are both stop valves with heat preservation and insulation functions.

[0048] Specifically, honeycomb-shaped water-permeable holes 11 are formed on the side walls of the permeable bricks 10 , and the water-permeable holes 11 connect the air duct 6 with the soil.

[0049] Yet another embodiment

[0050] A device for improving the heat transfer efficiency of a soil heat storage body by utilizing the condensation phenomenon, comprising an air intake component, wherein the air intake component passes through an insulating layer of soil 7 from the ground surface, a heat storage channel for heat storage is provided below the insulating layer of soil 7, the lower end of the air intake component is connected to the heat storage channel, and the other end of the heat storage channel is connected to an exhaust component, and the exhaust component passes through the insulating layer of soil 7 from bottom to top.

[0051] The air intake assembly includes an air duct 4 that passes through the insulation layer soil 7, and the lower end of the air duct 4 is connected to the upper end of the heat storage channel.

[0052] A transverse elbow is formed at the top of the air duct 4, and the transverse elbow is connected to the air inducing device.

[0053] The air inducing device is a fan 3 , which is placed horizontally, and the free end of the horizontal elbow is connected to the air outlet end of the fan 3 .

[0054] An air intake stop valve 5 for controlling the air entering the heat storage channel is disposed at the lower end of the air duct 4 .

[0055] The heat storage channel is composed of permeable bricks 10 , and the inner cavity of the heat storage channel is a rectangular air duct 6 .

[0056] The permeable bricks 10 include transition permeable bricks and connecting permeable bricks. Permeable holes 11 are formed at the side walls of the transition permeable bricks and the connecting permeable bricks.

[0057] A connecting hole connected to the air duct 4 or the outlet air duct 13 is formed on the top of the transition permeable brick, and a rectangular channel hole is formed on the side wall of one side of the transition permeable brick, and the rectangular channel hole is connected to the connecting permeable brick.

[0058] The interconnecting permeable brick includes a rectangular through hole penetrating through two opposite side walls.

[0059] The exhaust assembly includes an outlet air duct 13, the lower end of the outlet air duct 13 is connected to the heat storage channel, and the upper end of the outlet air duct 13 passes through the insulation layer soil 7 and protrudes out of the ground surface.

[0060] Specifically, in order to meet the clear height requirement, the fan 3 is provided with a bracket 2 on the ground, and the fan 3 is arranged on the bracket 2 .

[0061] Four corner through holes are formed in the bracket 2, and the four corner through holes correspond to the four foot mounting holes of the fan 3 one by one, and the fan 3 and the bracket 2 are fixed by bolt and nut assemblies.

[0062] The air outlet end of the fan 3 is connected to the transverse elbow of the air duct 4 through a connecting flange. A sealing groove is formed at the air outlet end of the fan 3. A sealing ring is arranged in the sealing groove. The air outlet end of the fan 3 and the flange in the transverse elbow of the air duct 4 press the sealing ring.

[0063] A dust cover 1 is provided at the air inlet end of the fan 3, and the dust cover 1 filters dust for the inlet air.

[0064] The lower end of the air duct 4 is communicated with the top of the transition permeable brick.

[0065] An outlet stop valve 14 for controlling exhaust gas is disposed at the lower end of the outlet air duct 13 .

[0066] Specifically, the air outlet stop valve 14 and the air inlet stop valve 5 are both stop valves with heat preservation and insulation functions.

[0067] Specifically, honeycomb-shaped water-permeable holes 11 are formed on the side walls of the permeable bricks 10 , and the water-permeable holes 11 connect the air duct 6 with the soil.

[0068] In this embodiment, an intake dry-bulb thermometer 8 and an intake wet-bulb thermometer 9 are provided on the intake side of the heat storage channel, and correspondingly, an outlet dry-bulb thermometer 15 and an outlet wet-bulb thermometer 16 are provided on the exhaust side of the heat storage channel.

[0069] In this embodiment, the outlet air duct 13 has its outlet opening placed vertically, and the discharged air can be dispersed outwards from the vertical outlet opening.

[0070] An outlet shroud plate 12 is disposed on the top of the outlet air duct 13 .

[0071] The working process of the invention is as follows:

[0072] During the heat storage process, the air inlet stop valve 5 is opened and the fan 3 is started. The fan 3 draws the external hot air into the air duct 4. The hot air enters the air duct 6 after passing through the air inlet stop valve 5. The hot air exchanges heat with the permeable bricks 10 in the air duct. The air after heat exchange is discharged from the outlet air duct 13.

[0073] The permeable bricks using the honeycomb-shaped permeable bricks 10 can discharge the condensed water into the soil, and at the same time, the permeable bricks 10 are changed from dry bricks to wet bricks, thereby improving the heat transfer efficiency.

[0074] The soil source heat pump of the present invention avoids the problem of reduced heat storage efficiency due to condensed water caused by condensation, and can efficiently store heat in the summer when the air temperature and air moisture content are the highest. The soil source heat pump uses permeable bricks to absorb condensed water when condensation occurs, forming heat and mass transfer to store part of the latent heat in the air in the soil.

[0075] In the present invention, after the permeable brick absorbs a certain amount of water during condensation, it changes from a dry brick to a wet brick, thereby improving the heat exchange efficiency. At the same time, the permeable brick is honeycomb-shaped, and the heat transfer coefficient will continue to increase at high wind speeds, thereby ensuring the heat transfer efficiency.

Claims

1. A device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon, comprising an air intake assembly, characterized in that: The air intake component passes through the thermal insulation layer soil (7) from the ground surface, a heat storage channel for storing heat is provided below the thermal insulation layer soil (7), the lower end of the air intake component is connected to the heat storage channel, and the other end of the heat storage channel is connected to the exhaust component, and the exhaust component passes through the thermal insulation layer soil (7) from bottom to top; The heat storage channel is composed of permeable bricks (10), and the inner cavity of the heat storage channel is a rectangular air duct (6); The permeable bricks (10) include transition permeable bricks and connecting permeable bricks, and the side walls of the transition permeable bricks and the connecting permeable bricks are both formed with permeable holes (11); During the heat storage process, the air intake stop valve (5) is opened, the fan (3) is started, and the fan (3) draws hot air from the outside into the air duct (4). The hot air passes through the air intake stop valve (5) and enters the air duct (6). The hot air exchanges heat with the permeable bricks (10) in the air duct, and the air after the heat exchange is discharged from the outlet air duct (13); The use of honeycomb-shaped permeable bricks (10) can discharge condensed water into the soil, and at the same time, the permeable bricks (10) are transformed from dry bricks into wet bricks, thereby improving the heat transfer efficiency.

2. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 1, characterized in that: The air intake assembly comprises an air duct (4) passing through the heat-insulating layer soil (7), and the lower end of the air duct (4) is connected to the upper end of the heat storage channel.

3. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 2, characterized in that: A transverse elbow is formed at the top of the air duct (4), and the transverse elbow is connected to the air inducing device.

4. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 3, characterized in that: The air inducing device is a fan (3), the fan (3) is placed horizontally, and the free end of the horizontal elbow is connected to the air outlet end of the fan (3).

5. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 4, characterized in that: An air intake stop valve (5) for controlling the air entering the heat storage channel is provided at the lower end of the air duct (4).

6. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 1, characterized in that: A connecting hole connected to the air duct (4) or the outlet air duct (13) is formed on the top of the transition permeable brick, and a rectangular channel hole is formed on the side wall of one side of the transition permeable brick, and the rectangular channel hole is connected to the connecting permeable brick.

7. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 6, characterized in that: The interconnecting permeable brick includes a rectangular through hole penetrating through two opposite side walls.

8. The device for improving the heat transfer efficiency of soil heat storage body by utilizing condensation phenomenon according to claim 7, characterized in that: The exhaust assembly comprises an outlet air duct (13), the lower end of the outlet air duct (13) being in communication with the heat storage channel, and the upper end of the outlet air duct (13) passing through the heat-insulating layer of soil (7) and protruding out of the ground surface.

Images