GB2447890A - Solar collector comprising resilient tubing to compensate for the expansion of a working fluid due to freezing - Google Patents

Solar collector comprising resilient tubing to compensate for the expansion of a working fluid due to freezing Download PDF

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Publication number
GB2447890A
GB2447890A GB0705468A GB0705468A GB2447890A GB 2447890 A GB2447890 A GB 2447890A GB 0705468 A GB0705468 A GB 0705468A GB 0705468 A GB0705468 A GB 0705468A GB 2447890 A GB2447890 A GB 2447890A
Authority
GB
United Kingdom
Prior art keywords
tubing
copper
silicone tubing
silicone
water
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Withdrawn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
GB0705468A
Other versions
GB0705468D0 (en
Inventor
Christopher Robert Sims
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 GB0705468A priority Critical patent/GB2447890A/en
Publication of GB0705468D0 publication Critical patent/GB0705468D0/en
Publication of GB2447890A publication Critical patent/GB2447890A/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S40/00—Safety or protection arrangements of solar heat collectors; Preventing malfunction of solar heat collectors
    • F24S40/70—Preventing freezing
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B7/00—Water main or service pipe systems
    • E03B7/09—Component parts or accessories
    • E03B7/10—Devices preventing bursting of pipes by freezing
    • F24J2/4632—
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/14—Safety or protection arrangements; Arrangements for preventing malfunction for preventing damage by freezing, e.g. for accommodating volume expansion
    • 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

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Pipe Accessories (AREA)
  • Thermal Insulation (AREA)

Abstract

A solar collector comprises a length of serpentine copper tubing and a length of sealed silicone tubing, where the silicone tubing is inserted internally along the entire length of the copper tubing. An annulus is created between the inside of the copper tubing and the outside of the silicone tubing through which water can flow. The silicone tubing is compressible and is thus able to absorb an increase in water volume due to freezing. In this way, the compressible silicone tubing compensates for the expansion of the water when freezing and protects the copper tubing from damage, such as rupture or bursting. Preferably, as the frozen water starts to thaw out, the air compressed inside the sealed silicone tubing enables the silicone tubing to return to its original shape. The silicone tubing may be held in place inside the copper tubing by a restraining system comprising a cylindrical body and fins. In use, the tubing arrangement allows water to freeze and thaw out without causing damage to the solar collector's copper tubing.

Description

DESCRIPTION
THE SOLAR COMPRESSION FLAT PLATE COLLECTOR
Solar flat plate collector The solar flat plate collector is a simple but affective design; it simply converts light into heat and uses that heat-to-heat water. The solar flat plate collector is a widely used design, the collector consists of a glazed insulated panel containing an absorber surface designed to convert light into heat. The absorber surface is connected to a serpentine system of pipes so that heat collected in the absorber surface is conducted into the pipes to heat the water.
Almost all systems available on the market today depend upon a number of features to avoid freezing of the solar flat collector, if the solar flat collector freezes it will crack or split the pipes. Listed below are a number of methods used to over come this effect.
Expansion vessels Drain back systems Antifreeze (Glycol propylene mixture) The methods used above require large amounts of the central heating system to be replaced, which is wasteful and expensive, listed below are a number of the parts needed.
Heat exchangers New hot water cylinder High pressure pumps up to 10 bars Safety valves and vents The desi2n to be patented The Solar compression flat plate collector The design of my solar flat plate collector is different to every other design on the market today. I use a standard design a glazed insulated Panel containing an absorber surface and serpentine tubing system, but that is where the similarities end. Inside the serpentine copper tubing is a sealed silicone tubing running the entire length of the serpentine copper tubing, which allows the water to expand when frozen, When the water freezes the silicone tube will be forced to contract / compress so that the serpentine tubing remains undamaged. As the water thaws out the sealed silicone tubing returns to its normal shape helped by the compressed air inside the tubing. When water freezes it expands by 4%, the silicone tubing system will allow a rate of 26.6% compression, which means the copper tubing will remain undamaged. The silicone tubing is designed to withstand temperatures of -50c -+250c. The serpentine copper tubing diameter is 12mm with a wall thickness of 0.6mm the internal bore size of the copper tubing is 10.8mm. The silicone tubing outer diameter is 4.8mm and the wall thickness is 1.6mm that leave a bore size of 1.6mm this is the compression zone.
The Silicone tubing restrain.n2 system The system that I use is an interference fit, the outer diameter of the silicone tubing is 4.8mm and the inner diameter of the restraining system is 4.7mm so when the silicone tubing is inserted into the restrainer it is an interference fit, the inner bore of the silicone tubing is 1.6mm but when inserted into the restrainer the diameter is reduced to 1.5mm, so when the end stop restraining plug is pushed into place it secures the silicone tubing, the end stop restraining plug has a diameter of! .6mm which acts as an interference fit and that is glued into place with a silicone adhesive.
This system allows the silicone tubing to be retrained without interfering with the flow of the water. See diagrams attached.

Claims (1)

  1. I'm claiming that my solar compression collector will allow water to freeze and to thaw out without causing damage to the solar collectors copper tubing, my system has no need for antifreeze or drain back by night systems or expansion tanks etc. The way this works is by adding sealed silicone tubing into the copper serpentine tubing running the entire length of the serpentine copper tubing. This systems relies upon compression / contraction of the sealed silicone tubing. Water when frozen expands by 4% volume, the silicone tubing can compress by 26.6% given total protection from freezing.
GB0705468A 2007-03-22 2007-03-22 Solar collector comprising resilient tubing to compensate for the expansion of a working fluid due to freezing Withdrawn GB2447890A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0705468A GB2447890A (en) 2007-03-22 2007-03-22 Solar collector comprising resilient tubing to compensate for the expansion of a working fluid due to freezing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0705468A GB2447890A (en) 2007-03-22 2007-03-22 Solar collector comprising resilient tubing to compensate for the expansion of a working fluid due to freezing

Publications (2)

Publication Number Publication Date
GB0705468D0 GB0705468D0 (en) 2007-05-02
GB2447890A true GB2447890A (en) 2008-10-01

Family

ID=38024603

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0705468A Withdrawn GB2447890A (en) 2007-03-22 2007-03-22 Solar collector comprising resilient tubing to compensate for the expansion of a working fluid due to freezing

Country Status (1)

Country Link
GB (1) GB2447890A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914071A (en) * 2012-09-26 2013-02-06 张美玲 Solar antifreeze pipe
GB2510063A (en) * 2013-01-18 2014-07-23 Soltropy Ltd Fluid transport apparatus to permit expansion of water due to it freezing
ES2684779A1 (en) * 2017-03-29 2018-10-04 Universidad De Sevilla Flat solar collector with silicone peroxide tube (Machine-translation by Google Translate, not legally binding)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US596062A (en) * 1897-12-28 Device for preventing bursting of freezing pipes
BE896604A (en) * 1983-04-29 1983-08-16 Transelektro Magyar Villamossa Freezing protection for pipework - has air filled flexible tube inserted in pipeline to allow expansion
GB2167827A (en) * 1984-12-03 1986-06-04 John Henry Richmond Fluid expansion containment arrangements
WO2000016023A1 (en) * 1998-09-14 2000-03-23 Arise Technologies Corporation Freeze protection apparatus for fluid transport passages
ZA993636B (en) * 1998-04-30 2001-05-03 Simon Johannes Du Plooy Conduit for fluids.
EP1669693A1 (en) * 2004-12-08 2006-06-14 Transen Industria e Commercio LtdA. Solar collector with freezing-proof device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US596062A (en) * 1897-12-28 Device for preventing bursting of freezing pipes
BE896604A (en) * 1983-04-29 1983-08-16 Transelektro Magyar Villamossa Freezing protection for pipework - has air filled flexible tube inserted in pipeline to allow expansion
GB2167827A (en) * 1984-12-03 1986-06-04 John Henry Richmond Fluid expansion containment arrangements
ZA993636B (en) * 1998-04-30 2001-05-03 Simon Johannes Du Plooy Conduit for fluids.
WO2000016023A1 (en) * 1998-09-14 2000-03-23 Arise Technologies Corporation Freeze protection apparatus for fluid transport passages
EP1669693A1 (en) * 2004-12-08 2006-06-14 Transen Industria e Commercio LtdA. Solar collector with freezing-proof device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914071A (en) * 2012-09-26 2013-02-06 张美玲 Solar antifreeze pipe
GB2510063A (en) * 2013-01-18 2014-07-23 Soltropy Ltd Fluid transport apparatus to permit expansion of water due to it freezing
GB2510063B (en) * 2013-01-18 2015-11-04 Soltropy Ltd Improvements in or relating to heating and cooling systems
ES2684779A1 (en) * 2017-03-29 2018-10-04 Universidad De Sevilla Flat solar collector with silicone peroxide tube (Machine-translation by Google Translate, not legally binding)
WO2018178417A1 (en) * 2017-03-29 2018-10-04 Universidad De Sevilla Flat-plate solar collector comprising a silicone peroxide tube

Also Published As

Publication number Publication date
GB0705468D0 (en) 2007-05-02

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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)