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CN-120323245-B - Facility agriculture crop canopy solar heating system

CN120323245BCN 120323245 BCN120323245 BCN 120323245BCN-120323245-B

Abstract

The invention provides a solar heating system for a canopy of a facility agricultural crop, which utilizes clean, pollution-free and low-cost solar energy to supply heat to the canopy of the crop and ensures the normal growth of the canopy of the crop. The facility agriculture crop canopy solar heat supply system comprises a crop canopy heat preservation layer, a heat storage wall and a heat conductor, wherein the crop canopy heat preservation layer divides an interior space of the facility agriculture into an upper layer and a lower layer, the lower layer is a crop canopy heat preservation space, the crop canopy heat preservation layer can be rolled or unfolded, the heat storage wall is arranged on the south side of a facility agriculture north wall in the crop canopy heat preservation space and used for storing heat formed after sunlight irradiation in daytime, and a plurality of heat conductors are arranged in the heat storage wall and used for transmitting the heat to the interior of the heat storage wall.

Inventors

  • CHANG ZEHUI
  • XU SHUANG

Assignees

  • 内蒙古工业大学

Dates

Publication Date
20260508
Application Date
20250422

Claims (7)

  1. 1. The utility agriculture crop canopy solar heat supply system is characterized by comprising a crop canopy heat preservation layer (13), a heat storage wall (11) and a heat conductor; the crop canopy heat preservation layer (13) divides the facility agriculture internal space into an upper layer and a lower layer, wherein the lower layer is a crop canopy heat preservation space (21), and the crop canopy heat preservation layer (13) can be folded or unfolded; A heat storage wall (11) is arranged on the south side of the facility agriculture north wall (2) in the crop canopy heat preservation space (21) and used for storing heat formed after sunlight irradiation; a plurality of heat conductors are arranged in the heat storage wall (11) and used for transmitting heat to the inside of the heat storage wall (11); The facility agriculture is provided with a facility agriculture north wall (2), a facility agriculture supporting frame (3), an outer film (4) and an outer heat preservation layer (1); One end of the facility agriculture supporting frame (3) is connected with the upper end of the facility agriculture north wall (2), and the other end of the facility agriculture supporting frame is supported on the ground, the outer layer film (4) is laid on the facility agriculture supporting frame (3), the outer heat preservation layer (1) is laid on the surface of the outer layer film (4), and the outer heat preservation layer (1) can be folded or unfolded; A crop canopy support frame (10) is arranged below the facility agriculture support frame (3), one end of the crop canopy support frame (10) is connected with the facility agriculture north wall (2), and the other end of the crop canopy support frame is supported on the ground, and the crop canopy heat preservation layer (13) is supported on the crop canopy support frame (10) and can be retracted or expanded; A linkage unit is arranged between the outer heat-insulating layer (1) and the crop canopy heat-insulating layer (13), when the outer heat-insulating layer (1) is retracted, the crop canopy heat-insulating layer (13) is also retracted under the action of the linkage unit, and when the outer heat-insulating layer (1) is expanded, the crop canopy heat-insulating layer (13) is also expanded under the action of the linkage unit; both lateral sides of the outer heat insulation layer (1) are provided with linkage units; the linkage unit comprises a fixed pulley assembly (7), a traction rope (8) and a rebound device (9); The two lateral sides of the outer heat-insulating layer (1) are respectively in sliding fit with a guide rail (5) arranged on the facility agriculture supporting frame (3) through a sliding block (6), the outer heat-insulating layer (1) is folded or unfolded by utilizing the movement of the sliding block (6) on the guide rail (5), and the outer heat-insulating layer (1) is folded from bottom to top and paved from top to bottom when being folded; The upper end of the facility agriculture supporting frame (3) is provided with a fixed pulley assembly (7), one end of the crop canopy thermal insulation layer (13) is connected with one end of a traction rope (8), and the other end of the traction rope (8) is connected with the rebound device (9), and the other end of the traction rope (8) bypasses the fixed pulley assembly (7) at the corresponding side and then is connected with a sliding block (6) at the corresponding side; When the sliding block (6) is positioned at the lower end of the guide rail (5), the outer thermal insulation layer (1) is in an unfolding state, the crop canopy thermal insulation layer (13) is also in an unfolding state, the rebound device (9) is in a stretching state and has rebound force, and the traction rope (8) is in a tensioning state.
  2. 2. A facility agriculture crop canopy solar heating system as claimed in claim 1, wherein the heat conductor is a heat pipe type heat conductor (12); The heat pipe type heat conductor (12) comprises a light absorber (14), a light-gathering heat collector (15), a heat conducting pipe (17) and a low-boiling-point phase change material (16); The solar heat storage device comprises a heat conducting pipe (17), a light absorbing body (14), a condensing collector (15) and a liquid phase change material (16), wherein the light absorbing body (14) is positioned at the front end of the heat conducting pipe (17) and is communicated with the heat conducting pipe (17), the light absorbing body (14) is exposed on the surface of the heat storage wall (11) and is used for absorbing solar radiation, and the light absorbing body (14) is internally provided with the condensing collector (15) and is filled with the liquid phase change material (16) with low boiling point; the heat conducting pipe (17) is buried in the heat storage wall (11) obliquely upwards.
  3. 3. A facility agriculture crop canopy solar heating system as claimed in claim 1 or 2, further comprising a condensation moisture absorption unit for directing condensation water from the inner surface of the crop canopy insulation (13) to the ground.
  4. 4. A facility agriculture crop canopy solar heating system as claimed in claim 3, characterized in that a plurality of condensation moisture absorption units are arranged on the lower surface of the crop canopy thermal insulation layer (13); the condensation moisture absorption unit comprises a flexible moisture absorption rope (18) and a balancing weight (20); The upper end of the flexible moisture absorption rope (18) is connected to the lower surface of the crop canopy heat preservation layer (13), the balancing weight (20) is hung at the lower end of the flexible moisture absorption rope, when the crop canopy heat preservation layer (13) is unfolded, the flexible moisture absorption rope (18) stretches out under the action of the balancing weight (20) and keeps a vertical hanging state, and the vertical position of the flexible moisture absorption rope (18) avoids the crop canopy.
  5. 5. The facility agriculture crop canopy solar heating system as claimed in claim 4, wherein a plurality of condensation tips (19) are distributed on the flexible moisture absorption rope (18) along the height direction, one end of the condensation tip (19) is positioned on the flexible moisture absorption rope (18), and the other end is inclined outwards and upwards relative to the flexible moisture absorption rope (18); Moisture in the air of the crop canopy insulation space (21) can be condensed into water drops at the condensation tip (19), and is guided to the flexible moisture absorption rope (18) along the condensation tip (19).
  6. 6. A facility agriculture crop canopy solar heating system as claimed in claim 1, wherein the crop canopy support frame (10) is height adjustable.
  7. 7. A facility agriculture crop canopy solar heating system as claimed in claim 1 or 2, wherein the heat storage wall (11) surface is coated with a black heat absorbing coating.

Description

Facility agriculture crop canopy solar heating system Technical Field The invention relates to a solar heat supply system, in particular to a canopy solar heat supply system for facility agriculture crops, and belongs to the technical field of solar photo-thermal utilization, energy conservation and environmental protection. Background The facility agriculture can ensure that crops normally grow under the low-temperature condition, but in severe cold areas, extremely cold climates enable the crops to still be difficult to normally grow in the facility agriculture industry, especially crop canopy, and newly-grown tender leaves and bud tips are more easily damaged by low temperature, so that the growth temperature of the crop canopy needs to be ensured. In the northern severe cold region, heating facilities such as coal, gas or electric boilers are generally used for heating crop canopy, but the coal and gas can cause environmental pollution and fire hazard, the electric energy utilization cost is high, and the electricity is required to be upgraded and reformed. Disclosure of Invention In view of the above, the invention provides a solar heat supply system for a canopy of a facility agriculture crop, which utilizes clean, pollution-free and low-cost solar energy to supply heat to the canopy of the crop, and ensures the normal growth of the canopy of the crop. The technical scheme of the invention is that the facility agriculture crop canopy solar heat supply system comprises a crop canopy heat preservation layer, a heat storage wall and a heat conductor; The crop canopy heat preservation layer divides the facility agriculture inner space into an upper layer and a lower layer, wherein the lower layer is a crop canopy heat preservation space; A heat storage wall is arranged on the south side of the north wall of the facility agriculture in the crop canopy heat preservation space and used for storing heat formed after sunlight irradiation; A plurality of heat conductors are arranged in the heat storage wall and used for transmitting heat to the inside of the heat storage wall. As a preferable mode of the invention, the heat conductor is a heat pipe type heat conductor; the heat pipe type heat conductor comprises a light absorber, a light-gathering heat collector, a heat pipe and a low-boiling-point phase change material; The light absorber is arranged at the front end of the heat conducting pipe and communicated with the heat conducting pipe, is exposed on the surface of the heat storage wall and is used for absorbing solar radiation, and a light-gathering heat collector is arranged in the light absorber and is filled with liquid phase change material with low boiling point; the heat conducting pipe is buried in the heat storage wall obliquely upwards. As a preferred mode of the present invention, the present invention further comprises a condensation moisture absorption unit for guiding condensed water on the inner surface of the crop canopy insulation layer to the ground. As a preferable mode of the invention, a plurality of condensation and moisture absorption units are arranged on the lower surface of the crop canopy heat preservation layer; the condensation moisture absorption unit comprises a flexible moisture absorption rope and a balancing weight; The upper end of the flexible moisture absorption rope is connected to the lower surface of the crop canopy heat preservation layer, the balancing weight is hung at the lower end of the flexible moisture absorption rope, when the crop canopy heat preservation layer is unfolded, the flexible moisture absorption rope stretches out along with the balancing weight under the action of the balancing weight and keeps in a vertical hanging state, and the vertical position of the flexible moisture absorption rope avoids the crop canopy. As a preferable mode of the invention, a plurality of condensation tips are distributed on the flexible moisture absorption rope along the height direction, one end of each condensation tip is positioned on the flexible moisture absorption rope, and the other end of each condensation tip is inclined outwards and upwards relative to the flexible moisture absorption rope; Moisture in the crop canopy insulation space air can be condensed into water drops at the condensation tip, and is guided to the flexible moisture absorption rope along the condensation tip. As a preferred mode of the present invention, the facility agriculture has a facility agriculture north wall, a facility agriculture supporting frame, an outer film and an outer heat-insulating layer; The device comprises a facility agriculture support frame, an outer film, an outer heat preservation layer, a heat insulation layer and a heat insulation layer, wherein one end of the facility agriculture support frame is connected with the upper end of a north wall of the facility agriculture, and the other end of the facility agriculture support frame is supported on the ground; The c