WO2021001852A1 - Système d'emmagasinage de froid à énergie solaire - Google Patents

Système d'emmagasinage de froid à énergie solaire Download PDF

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Publication number
WO2021001852A1
WO2021001852A1 PCT/IN2020/050574 IN2020050574W WO2021001852A1 WO 2021001852 A1 WO2021001852 A1 WO 2021001852A1 IN 2020050574 W IN2020050574 W IN 2020050574W WO 2021001852 A1 WO2021001852 A1 WO 2021001852A1
Authority
WO
WIPO (PCT)
Prior art keywords
container
cold storage
solar
solar panels
panels
Prior art date
Application number
PCT/IN2020/050574
Other languages
English (en)
Inventor
Ravikumar NUTULAPATI
Srinivasa Shankara Prasad MADIRAJU
Original Assignee
Nutulapati Ravikumar
Madiraju Srinivasa Shankara Prasad
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nutulapati Ravikumar, Madiraju Srinivasa Shankara Prasad filed Critical Nutulapati Ravikumar
Publication of WO2021001852A1 publication Critical patent/WO2021001852A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/005—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces in cold rooms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
    • H01L31/0521—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/40—Thermal components
    • H02S40/42—Cooling means
    • H02S40/425—Cooling means using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention generally relates to solar-powered cold storage systems. More particularly, it relates to the cold storage system for providing a cooling mechanism to both solar panels and a cold storage container.
  • Cold storage systems and containers are commonly used in many applications that require refrigeration or cooling a space, substance, or contents within it to lower and/or maintain its temperature below the ambient one.
  • cold storage systems like refrigerators are used in cooling and storing perishable items like food, fruits, vegetables, beverages etc., at a cold temperature which in turn makes the perishable items to stay fresh for a longer period of time.
  • the cold storage systems are operated using non-renewable energy sources as it receives power from an electric grid.
  • the grid is unreliable because, a sudden breakdown or failure in any part of the grid interrupts the supply of electricity which in turn deteriorate the stored items in the cold storage systems.
  • the solar panels that harvest solar energy have plurality of photovoltaic cells that converts the received sunlight into electric energy. Since the panels needs to be exposed to the sun for generating electricity, they become hot and thus operate less efficiently. Also, it has been found that the efficiency of the cold storage system is related to the temperature of the photovoltaic panels and suitable cooling mechanism needs to be implemented for increasing overall efficiency of the system. Few apparatus and systems for cooling solar panels in order to increase the efficiency of the cold storage system are provided here as prior art for the presently disclosed subject matter.
  • United States Patent Number 10050584 to Wilbert Yuque entitled“Cooling apparatus for solar panels” relates to a solar panel cooling apparatus and system where a shroud is used to couple the cooling system to the back side of the solar panel.
  • the shroud includes a nozzle for spraying cooling fluid on the panel.
  • United States Patent Number 6453693 to Michael K. Ewert et.al, entitled“Solar powered refrigeration system” relates to a solar powered vapor compression refrigeration system where the capacitor is used to provide current during compressor start-up and an alternative power source such as battery is also implemented in the system.
  • the primary object of the present invention is to increase the overall efficiency of solar-powered cold storage system using specially adapted photovoltaic modules.
  • Another object of the present invention is to maintain the temperature of photovoltaic panels by storing the generated energy in electric and electronic storage systems.
  • Still another object of the present invention is to extend the life of both the photovoltaic panels and the electronic storage systems and thereby to create minimal impact on the environment.
  • Yet another object of the present invention is to provide a cooling mechanism to both the cold storage container and the photovoltaic modules.
  • the present invention discloses a solar powered cold storage system for providing cooling mechanism / refrigeration to a container and for maintaining the temperature of specially adapted photovoltaic modules.
  • the solar powered cold storage system for providing refrigeration of a container and its contents which comprises one or more solar panels with photovoltaic modules, where the panel comprises a thermal plate directly attached to the back of the solar panel, wherein the plate has a set of tubes to carry a cold fluid from a pump located along with a main chilling device of the system to provide cooling effect to the container and to maintain uniform temperature of the panels.
  • the specially adapted / designed photovoltaic panels has a thermally insular pipe system that carries the require refrigerant in its coils. These coils carry pumped in refrigerant from the compressor system located at a base station.
  • the system further comprises an electric and electronic storage such as a battery and a capacitor storage banks respectively for providing current to the system.
  • the refrigeration system needs high starting current which is drawn from the capacitor storage bank and the operating current is drawn from the battery bank thereby increasing the efficiency of the system.
  • the solar panels are installed either on top of the containerized cold storage or any other such suitable location to generate direct current when sunlight fall on them.
  • the efficiency of this generation depends on the panel temperature in an inverse manner.
  • the proposed system plans to lower the temperature using the extra power that is available after consumption by the main chilling device of the cold storage that it serves.
  • the cooling effect / mechanism provided to both the cold storage container and the solar panels through the control system and specially designed photovoltaic modules, maintains uniform temperature of the panels and thereby ensures higher efficiency of the system.
  • FIG. 1 illustrates a block diagram of the solar powered cold storage system as an embodiment of the present invention
  • FIG. 2 illustrates the cold storage system equipped with solar panels and control system
  • FIG. 3A & 3B illustrates the rear view and side view of solar panel cooling mechanism respectively.
  • a solar powered cold storage system for providing refrigeration to a container and for maintaining the temperature of specially adapted photovoltaic modules.
  • the solar powered cold storage system for providing refrigeration of a container and its contents which comprises one or more solar panels to generate direct current when sunlight falls on the panels with photovoltaic modules, where the panel comprises a thermal plate directly attached to the back of the solar panel, wherein the plate has a set of tubes to carry a cold fluid from a pump located along with a main chilling device of the system to provide cooling effect to the container and to maintain uniform temperature of the panels.
  • the cold storage system is powered by self-cooling solar photovoltaic modules and comprises an electric and electronic storage such as a battery and a capacitor storage banks are used respectively for providing current to the system.
  • the block diagram of the disclosed system is shown where the cooling effect / mechanism / system provided to both the cold storage container (112) and the solar panels (102) through the control system (104).
  • the specially designed mechanism maintains uniform temperature of the photovoltaic modules (102) and thereby ensures higher efficiency of the system.
  • the solar panels are (102) installed either on top of the containerized cold storage (112) or any other such suitable location to generate direct current when sunlight fall on them as shown in FIG. 2.
  • the solar panel (102) contains a laminate that is framed using aluminium extrude.
  • the laminate consists of layers of glass, solar cells that are stringed together, polymerized Ethylene-vinyl acetate (EVA) and a back sheet.
  • EVA polymerized Ethylene-vinyl acetate
  • the system comprises a specially adapted photovoltaic module for providing power to run the refrigeration system (110).
  • the control system (104) is the heart of the solar panel/ charging apparatus that intelligently connects to and draws power from the battery (106) and the capacitor (108) storage using a proprietary algorithm.
  • the capacitor (108) is charged and discharged rapidly at infinite times. Further, since the refrigeration system (110) needs high current for its operation, this high starting current is drawn from the capacitor storage (108) and operating current from the battery bank (106).
  • FIG. 3A & 3B it illustrates the side view and rear view of cooling mechanism of the solar panels (102).
  • the cooling mechanism has a special apparatus that is designed in a way that it consists of a thermal plate (302) attached to the back of the solar panel (102).
  • the system has a built in thermally insular pipe that carries the required refrigerant or cold fluid in the coils and the pump, pumps the refrigerant or cold fluid from the compressor located at the base station of a cold storage container / refrigeration unit.
  • the refrigerant or cold fluid enters through a coolant inlet (306) and flows through the set of tubes (304) attached to the thermal plate (302) and exits through a coolant exit (308).
  • the thermal plate (302) of the cooling mechanism acts as a heat exchanger which transfers the heat from the solar panel (102).
  • the sunlight falls on the solar panel (102), the sunlight is converted into an electrical energy and direct current is generated which is used for powering the refrigeration system (110).
  • the system has inbuilt sensors that triggers alarms electronically upon increase in inside temperature and gives an immediate notification as faults.
  • the cooling requirements are pre-programmed to maintain right / optimum temperature and to optimize the power consumption.
  • the temperature of the panel (102) is inversely related to the efficiency of the system. Further, the system lowers the temperature using the extra / remaining power that is available after consumption by the main chilling system of the cold storage that it serves thus eliminating the need for separate cooling device.
  • the solar panel (102) generates electric current to run the main refrigeration system (110) as well as to cool the solar panel (102). In addition, it also charges the battery (106) and capacitor (108) for providing current to efficiently operate the system.
  • the cold storage system of the present invention has the following advantages including, but not limiting to:

Abstract

L'invention concerne un système d'emmagasinage de froid à énergie solaire permettant de réfrigérer un contenant (112) et ses contenus, comprenant un ou plusieurs panneaux solaires (102) dotés de modules photovoltaïques, le panneau (102) comprenant une plaque thermique (302) fixée directement à l'arrière du panneau solaire (102), la plaque (302) comprenant un ensemble de tubes (304) servant à véhiculer un fluide froid à partir d'une pompe située conjointement avec un dispositif de refroidissement principal du système pour fournir un effet de refroidissement au contenant (112) et pour maintenir une température uniforme des panneaux. Le système comprend en outre un système de commande (104) comprenant une batterie (106) et un banc de condensateurs (108). Le système ne nécessite pas de dispositif de refroidissement séparé pour maintenir ou abaisser la température des panneaux (102) et ceci augmente l'efficacité totale et garantit la longévité des panneaux photovoltaïques (102) et de la batterie (106), réduisant ainsi les coûts de fonctionnement.
PCT/IN2020/050574 2019-07-02 2020-07-02 Système d'emmagasinage de froid à énergie solaire WO2021001852A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201941026489 2019-07-02
IN201941026489 2019-07-02

Publications (1)

Publication Number Publication Date
WO2021001852A1 true WO2021001852A1 (fr) 2021-01-07

Family

ID=74100655

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2020/050574 WO2021001852A1 (fr) 2019-07-02 2020-07-02 Système d'emmagasinage de froid à énergie solaire

Country Status (1)

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WO (1) WO2021001852A1 (fr)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150027511A1 (en) * 2013-07-23 2015-01-29 Lsis Co., Ltd. Temperature control system for solar cell module
US20150285541A1 (en) * 2012-10-29 2015-10-08 Solercool Ltd Solar powered thermally conditioned space

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150285541A1 (en) * 2012-10-29 2015-10-08 Solercool Ltd Solar powered thermally conditioned space
US20150027511A1 (en) * 2013-07-23 2015-01-29 Lsis Co., Ltd. Temperature control system for solar cell module

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