EP2347194A2 - Systeme de chauffage solaire pour tiedir l'eau chaude sur la base du principe d'echange de chaleur par le biais du processus de changement de phase d'evaporation et de condensation - Google Patents

Systeme de chauffage solaire pour tiedir l'eau chaude sur la base du principe d'echange de chaleur par le biais du processus de changement de phase d'evaporation et de condensation

Info

Publication number
EP2347194A2
EP2347194A2 EP09745103A EP09745103A EP2347194A2 EP 2347194 A2 EP2347194 A2 EP 2347194A2 EP 09745103 A EP09745103 A EP 09745103A EP 09745103 A EP09745103 A EP 09745103A EP 2347194 A2 EP2347194 A2 EP 2347194A2
Authority
EP
European Patent Office
Prior art keywords
heating system
solar heating
storage tank
solar
condensation
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP09745103A
Other languages
German (de)
English (en)
Inventor
Mario Giannelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP2347194A2 publication Critical patent/EP2347194A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S80/00—Details, accessories or component parts of solar heat collectors not provided for in groups F24S10/00-F24S70/00
    • F24S80/40—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S10/00—Solar heat collectors using working fluids
    • F24S10/90—Solar heat collectors using working fluids using internal thermosiphonic circulation
    • F24S10/95—Solar heat collectors using working fluids using internal thermosiphonic circulation having evaporator sections and condenser sections, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S60/00—Arrangements for storing heat collected by solar heat collectors
    • F24S60/30—Arrangements for storing heat collected by solar heat collectors storing heat in liquids
    • 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
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/44—Heat exchange systems

Definitions

  • the present invention relates to a solar heating system for providing hot water based on the principle of heat exchange through the phase-change process of evaporation and condensation, with improved thermal and usability efficiency features. Few similar systems are known in the art.
  • a solar heating system is usually made up of a collector (also called panel) which receives solar energy from an exchanger, where the fluid used to transfer it to the tank needed to receive the stored energy, circulates.
  • the system can be of the natural or forced circulation type.
  • a solar heating system of the natural circulation type uses the principle of thermal convection to circulate the vector fluid therethrough.
  • the vector liquid gets heated in the solar panel, it expands and floats, and therefore goes back to the exchanger arranged inside the storage tank.
  • the liquid in the exchanger releases heat to the water in the tank and as it cools, it goes back to the collector, ready to start a new cycle.
  • the vector fluid used in the primary circuit of the exchanger is usually non-toxic propylene glycol (commonly known as antifreeze) mixed to water in such a percentage to guarantee a suitable resistance to freezing.
  • the tank is usually arranged horizontally or vertically, outside the panel profile, usually at a height greater than the solar panel one. This arrangement is simpler and cheaper than the one of the forced circulation type.
  • EP 0574954 A2 describes another example known in the art.
  • the solar heating system made up of a panel, a heat exchanger and a tank is characterized in that the inclined solar panel and the tank are integrated to form a unique triangular-based parallelepiped body for heating the cold water contained in the tank directly during the panel irradiation.
  • said solar heating systems provide many disadvantages both concerning the efficiency and the usability in the installation and maintenance steps of the system.
  • the system efficiency is compromised mainly due to the geometry of the storage tank, which does not allow to position the panel with the optimum inclination, unless the roof is modified in order to embed therein the tank or a portion thereof .
  • An object of the present invention is to solve the above-described drawbacks concerning the low efficiency and effectiveness of the traditional solar heating systems, also when applied on saddle roofs, mainly guaranteeing an optimum panel inclination, and to avoid the initiation of parasitic reverse flow circulations in order to maximize the system thermal efficiency.
  • the present invention solves the prefixed objects in that it is a solar heating system for providing hot water, as for example the one used in the sanitary field, based on the principle of the heat exchange through the phase-change process of evaporation and condensation, which comprises at least a storage tank and at least a primary circuit with the features described in claims 1-3.
  • drawing 1/1 shows a not limiting and preferred embodiment of the invention:
  • Fig. 1 shows the side view of the invention
  • Fig. 2 shows an example of arrangement of said system on a roof, by means of a system schematic view (fig. 2a) and another view of the properly installed system (fig. 2b) .
  • the solar heating system for providing hot water based on the principle of heat exchange through the phase -change process of evaporation and condensation is generally indicated by the reference number 1. It comprises at least a storage tank 3 and at least a primary circuit provided with at least a solar collector 2, at least a heat exchanger 5, means (4, 6) for connecting the heat exchanger (5) to the solar collector (2) .
  • Said primary circuit which is closed and sealed, contains a small quantity of thermal -vector fluid
  • the solar collector 2 which is sun-irradiated or put in contact with a thermal energy source, releases heat to the liquid contained in the circuit, which vaporizes thus increasing the vapour pressure in the component.
  • the latent vaporization heat absorbed by the liquid reduces the temperature of the collector 2.
  • the vapour differential pressure between the hot portion (collector 2) and the cold portion (exchanger 5) causes rapid vapour transfer to the "cold" portion of the circuit. In the heat exchanger 5, the excess vapour condensates releasing heat of condensation to the fluid, which dampens the exchanger 5.
  • Said heat exchanger 5 is apt to heat the water flow of the system, as for example, the sanitary and/or heating one contained in the storage tank 3, without contaminating it.
  • Said tank 3 comprises at least a means, cold water input/hot water output 7, for connecting the tank 3 to the system, as for example, the sanitary and/or heating one.
  • said storage tank 3 is arranged horizontally or sub-horizontally, in particular, both under the collector 2 and outside the profile of the collector 2 at a height greater than or equal to the collector 2.
  • said solar heating system 1 in a particular embodiment, is characterized in that it is of pre-assembled mono-block type, as well as easily covered by means of coverings to form some sort of a dormer and the like.
  • the advantages of the present invention are clear: firstly the solar heating system efficiency is increased by positioning the panel with the best inclination; a rapid and effective exchange mechanism is used; and finally, the initiation of parasitic reverse circulations is avoided as the system structural features prevent the heat stored in the tank from evaporating the fluid contained in the lower portion of the collector.
  • Said system is also advantageous in that it is small dimensioned when in the storage step, thanks to the possibility to arrange the systems in vertical, with the tanks facing inwards, and in that it can be easily transported to the user. Moreover, it is very advantageous in that it offers a nice visual impact as a whole: in fact it is possible to harmoniously integrate it both on saddle roofs in the dormer form and on traditional roofs without compromising the building and the surrounding environment appearance; moreover, multiple applications of the single module are possible in order to satisfy the middle-high users needs .
  • said system in a mini pre- assembled and charged variant, beside the advantages of the classical system, said system is further advantageous in that it can be sold as a kit for domestic works, as well as used in series and/or parallel configurations by means of simple juxtaposition interventions of the system both on building roofs and mobile structures as for example, campers, containers and the like.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Photovoltaic Devices (AREA)

Abstract

L'invention concerne un système de chauffage solaire destiné à fournir de l'eau chaude sur la base du principe d'échange de chaleur par le biais du processus de changement de phase d'évaporation et de condensation, qui comprend au moins un réservoir de stockage (3) et au moins un circuit primaire, doté au moins d'un capteur solaire (2), au moins d'un échangeur de chaleur (5), et des moyens (4, 6) qui relient l'échangeur de chaleur (5) au capteur solaire (2); ledit circuit primaire permet de transférer la chaleur de l'extrémité chaude à l'extrémité froide du circuit par évaporation et condensation du liquide qui y est contenu; ledit réservoir de stockage (3) est disposé horizontalement ou de manière subhorizontale.
EP09745103A 2008-10-23 2009-09-29 Systeme de chauffage solaire pour tiedir l'eau chaude sur la base du principe d'echange de chaleur par le biais du processus de changement de phase d'evaporation et de condensation Withdrawn EP2347194A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBA2008A000044A IT1395011B1 (it) 2008-10-23 2008-10-23 Sistema solare termico per la produzione di acqua calda basato sul principio di scambio termico ad evaporazione e condensazione
PCT/IB2009/006987 WO2010046740A2 (fr) 2008-10-23 2009-09-29 Systeme de chauffage solaire pour tiedir l'eau chaude sur la base du principe d'échange de chaleur par le biais du processus de changement de phase d'evaporation et de condensation

Publications (1)

Publication Number Publication Date
EP2347194A2 true EP2347194A2 (fr) 2011-07-27

Family

ID=42119751

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09745103A Withdrawn EP2347194A2 (fr) 2008-10-23 2009-09-29 Systeme de chauffage solaire pour tiedir l'eau chaude sur la base du principe d'echange de chaleur par le biais du processus de changement de phase d'evaporation et de condensation

Country Status (3)

Country Link
EP (1) EP2347194A2 (fr)
IT (1) IT1395011B1 (fr)
WO (1) WO2010046740A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102692085A (zh) * 2012-05-18 2012-09-26 青岛海之川可再生能源研究所 太阳能集热管及太阳能热水器
ITTV20120159A1 (it) * 2012-08-08 2014-02-09 Quasar Matic Srl Riscaldatore solare di acqua o altro fluido

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4240405A (en) * 1979-04-30 1980-12-23 French Roger F Solar water heater
JPS5634062A (en) * 1979-08-27 1981-04-06 Oki Densen Kk Solar heat collector
US4513732A (en) * 1981-11-10 1985-04-30 Feldman Jr Karl T Passive integral solar heat collector system
US4505261A (en) * 1983-12-19 1985-03-19 Hunter Billy D Modular passive solar heating system
US4622951A (en) * 1985-05-28 1986-11-18 Alternative Energy Resources Solar collector assembly and kit
DE4428251A1 (de) * 1994-08-10 1996-02-15 Herrmann Klaus Ag Solare Warmwassererzeugung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010046740A2 *

Also Published As

Publication number Publication date
WO2010046740A2 (fr) 2010-04-29
IT1395011B1 (it) 2012-09-05
ITBA20080044A1 (it) 2010-04-24
WO2010046740A4 (fr) 2011-02-03
WO2010046740A3 (fr) 2010-11-25

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