GB2228312A - Solar heated cavity wall for ventilation purposes - Google Patents

Solar heated cavity wall for ventilation purposes Download PDF

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Publication number
GB2228312A
GB2228312A GB8903845A GB8903845A GB2228312A GB 2228312 A GB2228312 A GB 2228312A GB 8903845 A GB8903845 A GB 8903845A GB 8903845 A GB8903845 A GB 8903845A GB 2228312 A GB2228312 A GB 2228312A
Authority
GB
United Kingdom
Prior art keywords
cavity
wall
glazing
cavity wall
leaf
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Withdrawn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
GB8903845A
Other versions
GB8903845D0 (en
Inventor
Roy Wormald
Mary Elizabeth Sweeney
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
Priority to GB8903845A priority Critical patent/GB2228312A/en
Publication of GB8903845D0 publication Critical patent/GB8903845D0/en
Publication of GB2228312A publication Critical patent/GB2228312A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F24F5/0075—Systems using thermal walls, e.g. double window
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/60—Solar heat collectors integrated in fixed constructions, e.g. in buildings
    • F24S20/66—Solar heat collectors integrated in fixed constructions, e.g. in buildings in the form of facade constructions, e.g. wall constructions
    • 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
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B10/00—Integration of renewable energy sources in buildings
    • Y02B10/20—Solar thermal
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/90—Passive houses; Double facade technology
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Building Environments (AREA)

Abstract

A new or an old conventional cavity wall has a selective coating (2) applied to its external surface to produce high solar absorptivity but low longwave emissivity. Glazing (1) is mounted spaced from the outer wall (3). Heat produced by the absorption of solar radiation on the selectively coated surface passes by conduction through the outer wall into the cavity. Air flowing from an inside room to the bottom of the cavity (7) is heated and exits at the top of the cavity to the external environment through ducts at the top of the glazing (8). <IMAGE>

Description

SOLAR HEATED CAVITY WALL FOR VENTILATION This invention relates to the use of a solar-heated cavity wall for ventilation. Cavity walls are a standard form of construction in the building industry, and consist of two leaves of a bilking material (such as brick, block or concrete), with a cavity in between. The leaves are often of 100my thickness, the cavity has in the past been 50mm in width.
On sunny days the outer leaf of such a wall will be warmed by the sun, and conduct heat to the building interior. The efficiency of such heat transfer is however reduced by large heat losses from the unprotected external face.
Special solar heat storage walls have been built, which utilise a massive outer leaf, painted matt black, to store incident solar radiation. The outer surface has been covered by glazing to reduce the convective and radistive heat losses. Special selective coatings of low emissivity for long wave radiation, and high absorptivity for short wave radiation have been used to increase the performance of these walls.
According to the present invention these features are applied to a conventiona' cavity all, either newly built or as a retrofit to an existing one. To the external surface of this wall, a selective coating, a framework, and glazing is applied. A suitable air gap separates the glazing from the wall. Heat is conducted through the outer leat into the cavity, and air pasting from an interior into the cavity, is heated and exits t the to? of tne cavity to the external environment.
A specific embodiment of the invention will now be described by way of example, and reference is made to the accompanying drawing in which Fig. 1 shows a section of wall Fig. 2 shows a wall in pers?ective from the front Fig. 3 shows a wall in perspective fron the back The external leaf of this wall (3) is built of 102.5rum brick, and faces south. It has a selectively coated foil (2), adhering to its front surfce. and an air Zsp nf 100mm between that surface and the single glazing of normal glass in a suitable sealed framework (1). Heat from the absorption of solar radiation passes through the wall by conduction and enters the cavity (45. This is of 50rim thickness, and the rear leaf of the wall is built of 100 > m aerated concrete blocks (6). 25zm thickness of an insulating material, such as fibreglass or polystyrene foam (5) is fixed to the cavity side of the blocks. Internal air enters the cavity via small ducts (7) in the bottom of the wall, is heated and rises up the cavity, to exit to the external environment through a duct at the top (8).

Claims (1)

  1. CLAmS
    1. A solar heated cavity wall for ventilation, built from standard construction materials, with a selective coating material applied to the front surface of the outer leaf. Such a cavity wall has a thin outer leaf of a building material, the outer surface of which is provided with a window frame and glazing and the surface covered by the selective coating.
    Solar radiation transmitted through the glazing heats the outer surface of the cavity wall, this heat passing solely by conduction through the outer leaf into the wall cavity. Ducts are provided in the top of the outer leaf and in the bottom of the inner leaf to enable internal air to flow to the bottom of the cavity where after heating it exhaustc directly to the external environment from the duct at the top of the cavity.
GB8903845A 1989-02-21 1989-02-21 Solar heated cavity wall for ventilation purposes Withdrawn GB2228312A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8903845A GB2228312A (en) 1989-02-21 1989-02-21 Solar heated cavity wall for ventilation purposes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8903845A GB2228312A (en) 1989-02-21 1989-02-21 Solar heated cavity wall for ventilation purposes

Publications (2)

Publication Number Publication Date
GB8903845D0 GB8903845D0 (en) 1989-04-05
GB2228312A true GB2228312A (en) 1990-08-22

Family

ID=10652002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8903845A Withdrawn GB2228312A (en) 1989-02-21 1989-02-21 Solar heated cavity wall for ventilation purposes

Country Status (1)

Country Link
GB (1) GB2228312A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249989B2 (en) * 2005-10-12 2016-02-02 Ferdinando Tessarolo Solar radiator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1568663A (en) * 1975-11-14 1980-06-04 Concordia Dev Ab Solar heating installations
US4295415A (en) * 1979-08-16 1981-10-20 Schneider Peter J Jr Environmentally heated and cooled pre-fabricated insulated concrete building
US4484566A (en) * 1982-03-08 1984-11-27 Emmanuel Gonzalez Solar collector panel and heat storage system
GB2201701A (en) * 1987-03-06 1988-09-07 Roy Wormald Solar heated cavity wall

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1568663A (en) * 1975-11-14 1980-06-04 Concordia Dev Ab Solar heating installations
US4295415A (en) * 1979-08-16 1981-10-20 Schneider Peter J Jr Environmentally heated and cooled pre-fabricated insulated concrete building
US4484566A (en) * 1982-03-08 1984-11-27 Emmanuel Gonzalez Solar collector panel and heat storage system
GB2201701A (en) * 1987-03-06 1988-09-07 Roy Wormald Solar heated cavity wall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9249989B2 (en) * 2005-10-12 2016-02-02 Ferdinando Tessarolo Solar radiator

Also Published As

Publication number Publication date
GB8903845D0 (en) 1989-04-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)