WO2018146664A2 - Temperature regulating system and method in countercurrent flow for hydroponic crops - Google Patents
Temperature regulating system and method in countercurrent flow for hydroponic crops Download PDFInfo
- Publication number
- WO2018146664A2 WO2018146664A2 PCT/IB2018/053739 IB2018053739W WO2018146664A2 WO 2018146664 A2 WO2018146664 A2 WO 2018146664A2 IB 2018053739 W IB2018053739 W IB 2018053739W WO 2018146664 A2 WO2018146664 A2 WO 2018146664A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- conduit
- crop
- temperature
- temperature regulating
- closed pipe
- Prior art date
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F5/00—Air-conditioning systems or apparatus not covered by F24F1/00 or F24F3/00, e.g. using solar heat or combined with household units such as an oven or water heater
- F24F5/0003—Exclusively-fluid systems
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
- A01G31/02—Special apparatus therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
- A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
- A01G9/245—Conduits for heating by means of liquids, e.g. used as frame members or for soil heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/85—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using variable-flow pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
The invention relates to a temperature regulating system for hydroponic crops by means of a temperature regulating fluid in countercurrent to the flow of a nutritive solution. The system comprises a conduit in which the crop is supported and inside of which the nutritive solution flows, along with a closed pipe system, which passes through said conduit, through which the temperature regulating fluid circulates, in the opposite direction to the nutritive solution. The system further comprises a heat exchanger, a pump, a temperature sensor and a control mechanism.
Description
TEMPERATURE REGULATING SYSTEM AND METHOD IN
COUNTERCURRENT FLOW FOR HYDROPONIC CROPS
OBJECT OF THE INVENTION
The present invention can be included in the technical field of agriculture, in particular oriented towards systems and methods for hydroponic crops.
More specifically, the object of the invention relates to a temperature regulating system for hydroponic crops by circulating a temperature regulating fluid in countercurrent to the flow of a nutritive solution.
BACKGROUND OF THE INVENTION
Temperature variations above or below the optimal temperature of the crop cause development problems in the plants when they are cultivated in hydroponic systems.
There are alternatives that regulate the temperatures of nutritive solutions that are characteristic of hydroponic solutions, such as in document US5009029 which describes a system provided with heat exchange piping around the ducts, parallel to the same, heating or cooling the solution that flows through them, depending on the temperature required by the root system of the crop. Document CN105830896 describes a temperature control system for hydroponic crops by means of a water tank, planting tank, pump and cooling and heating device all connected by means of a network of pipes that regulate the temperature of the crop when it passes through the planting tank.
Therefore, taking into account the prior documents, it is necessary to find alternatives that are intended for systems that help increase the efficiency of heat transfer when controlling temperature and that maintain the suitable development of the crop and reduce energy costs.
DESCRIPTION OF THE INVENTION
The invention relates to a temperature regulating system in hydroponic crops by means of the flow of temperature regulating fluid in countercurrent to the flow of a nutritive solution.
Therefore, one aspect of the present invention relates to a temperature regulating system for hydroponic crops comprising:
- a conduit in which the crop is supported,
- a flow of nutritive solution that passes through the inside of the conduit and is in contact with the roots of the crop,
- a closed pipe system that passes through the conduit of the crop,
- a temperature regulating fluid that regulates the temperature of the nutritive solution that travels through the closed pipe system in countercurrent to said nutritive solution,
- a heat exchanger arranged in the closed pipe system,
- a pump arranged after the heat exchanger in the closed pipe system,
- a temperature sensor located inside the conduit of the crop, and
- a control mechanism connected between the temperature sensor and the pump,
wherein the temperature regulating flow circulates through the closed pipe system in the opposite direction to the flow of the nutritive solution, regulating the temperature of the crop when is passes through the conduit, returning to the heat exchanger and being driven once again by the pump.
In a preferred embodiment, the closed pipe system is made of resistant and flexible material.
In another preferred embodiment, the control mechanism is a programmable logic controller (PLC).
DESCRIPTION OF THE DRAWINGS
FIG 1 shows a general view of the temperature regulating system.
FIG 2 shows a side view of the temperature regulating system.
FIG 3 shows a front view of the temperature regulating system.
FIG 4 shows a top view of the temperature regulating system.
PREFERRED EMBODIMENT OF THE INVENTION
A preferred embodiment of the invention based on the figures shown is described below.
FIG 1 shows the conduit (14) in which the hydroponic crop (13) is supported through which the flow of nutritive solution (10) passes and which is in direct contact with the roots of the crop (12), the closed pipe system (1 , 2, 4 and 1 1 ) that passes through the conduit of the crop and through which the temperature regulating fluid flows, the heat exchanger (3), the pump (5), a temperature sensor (9) located inside the conduit and the control mechanism
(7) joined by connecting wires (6 and 8) to the temperature sensor and the pump.
FIG 2 shows a side view the conduit (14) in which the hydroponic crop (13) is situated through which the flow of nutritive solution (10) passes and which is in direct contact with the roots of the crop (12), the closed pipe system (1 , 2, 4 and 1 1 ) that passes through the conduit of the crop and through which the temperature regulating fluid flows, the heat exchanger (3), the pump (5), a temperature sensor (9) located inside the conduit and the control mechanism (7) joined by connecting wires (6 and 8) to the temperature sensor and the pump, wherein the pump is in a support (16) and has an electric wire (15) for plugging the system into the electric current.
FIG 3 shows a front view of the conduit (14) in which the hydroponic crop (13) is situated with the roots of the crop (12) thereof on a support (17), the pipes of the system (2 and 1 1 ) that pass through the conduit of the crop and through which the temperature regulating fluid flows, the heat exchanger (3), the pump (5), a temperature sensor (9) located inside the conduit and the control mechanism (7) joined by connecting wires (6 and 8) to the temperature sensor and the pump.
FIG 4 shows a top view the conduit (14) in which the hydroponic crop (13) is situated, the closed pipe system (1 , 2, 4 and 1 1 ) that passes through the conduit of the crop and through which the temperature regulating fluid flows, the heat exchanger (3), the pump (5), the control mechanism (7) joined by connecting wires (6 and 8) to the temperature sensor and the pump, wherein the pump has an electric wire (15) for plugging the system into the electric current.
Claims
1 . A temperature regulating system for hydroponic crops comprising:
- a conduit in which the crop is supported,
- a flow of nutritive solution that passes through the inside of the conduit and is in direct contact with the roots of the crop,
- a closed pipe system that passes through the conduit of the crop,
- a temperature regulating fluid that regulates the temperature of the nutritive solution that travels through the closed pipe system in countercurrent to said nutritive solution,
- a heat exchanger arranged in the closed pipe system,
- a pump arranged after the heat exchanger in the closed pipe system,
- a temperature sensor located inside the conduit of the culture, and
- a control mechanism connected between the temperature sensor and the pump,
wherein the temperature regulating flow circulates through the closed pipe system in the opposite direction to the flow of the nutritive solution, regulating the temperature of the crop when is passes through the conduit, returning to the heat exchanger and being driven once again by the pump.
2. The system according to claim 1 , wherein the closed pipe system is made of resistant and flexible material.
3. The system according to claim 1 , wherein the control mechanism is a programmable logic controller (PLC).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PA92184 | 2018-03-16 | ||
| PA9218401 | 2018-03-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2018146664A2 true WO2018146664A2 (en) | 2018-08-16 |
| WO2018146664A3 WO2018146664A3 (en) | 2018-11-08 |
Family
ID=63107501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2018/053739 WO2018146664A2 (en) | 2018-03-16 | 2018-05-25 | Temperature regulating system and method in countercurrent flow for hydroponic crops |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2018146664A2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5009029A (en) * | 1987-07-06 | 1991-04-23 | Wittlin Seymour I | Conductive temperature control system for plant cultivation |
| US5967085A (en) * | 1996-09-23 | 1999-10-19 | Bruce K. Kawamura | Sea water well-driven heat exchange system coupled to an agricultural system and aquaculture preserve |
| JP6576632B2 (en) * | 2014-05-21 | 2019-09-18 | ヤンマーグリーンシステム株式会社 | Cultivation apparatus and cultivation method |
-
2018
- 2018-05-25 WO PCT/IB2018/053739 patent/WO2018146664A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018146664A3 (en) | 2018-11-08 |
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