Grantham Daniels SABS Division South Africa an amendment to an existing SANS standard or part ... ...
Transcript of Grantham Daniels SABS Division South Africa an amendment to an existing SANS standard or part ... ...
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Grantham
Daniels
SABS Standards Division
South Africa
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INTRODUCTION
Standards Development
Standards of interest
International work
Training on Standards implementation
SABS test facilities
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SABS STANDARDS DEVELOPMENT
400 SABS Committees
Member of 377 ISO Committees
Member of 130 IEC Committees
Holds several leadership positions in IEC and ISO
Holds SADCStan Secretariat
Leading Standardization body in Africa (SADCSTAN, AFSEC)
Collection of over 6800 SANS
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SABS Energy Map
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Stages of Standards Development
Proposal Stage 1
Preparatory Stage 2
Committee Stage 3
New Work Item Proposal (NP)
Working Draft(s) (WD)
Committee Drafts (CD) and Final Committee Draft (FCD)
Draft South African Standard (DSS)
Approval Stage 4
Publication Stage 5
60 Days Home Grown30 Days Adopted Standard
New work item proposal (NP) is a proposal for:• a new standard• a new part of an existing SANS standard• revision of an existing SANS standard or part• an amendment to an existing SANS standard or part• a Technical Specification or a Publicly Available Specification
South African National Standard (SANS)
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Climate Change StrategyIPAP/DTI initiativeNational Energy StrategyGauteng Integrated Energy StrategyNRCS Regulated specificationsSAGE (Strategic Advisory Group on
Energy Efficiency)
FACTORS TO CONSIDER
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Membership representative of all stakeholdersLink with ESKOM to develop SANS and NRS
National Rationalized Specifications ESLC – Electricity suppliers liaison committee• NRS WG committees develop • SABS publish NRS document • National committees identifies the relevant• NRS to be published as SANS
STANDARDS DEVEOPMENT
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STANDARDS DEVELOPMENT
National technical committees
SABS TC 1057, DOMESTIC SOLAR WATER HEATING SYSTEMS
SABS TC 72, ELECTRICAL MEASUREMENTS
SABS TC 69, Power Electronics and Alternative Energy Conversion
Liaise with international committees e.g. IEC/TC 13 Electrical energy measurement, tariff and load control
IEC/TC 57 Power systems management and associated information exchange
IEC TC 88, Wind Turbine Systems
Working groups - technical experts
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SANS 1307, Domestic Solar Water Heaters
SANS 1346, Domestic Instantaneous Solar Water Heaters
SANS 151, Fixed Electric water heaters
SANS 6210, Mechanical Qualification Tests
SANS 6211-1 Thermal performance using outdoor test methods
SANS/IEC 61400-series, Wind Turbines
SANS 959 Series, Photovoltiac Energy Systems
Standards Currently under Development
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Visit the SABS onlineVisit the SABS online
www.sabs.co.za/index.php?page=standardspurchaseOffering standards users features:•Online purchase of SANS, NRS, ISO and IE Standards (the latter two at discount prices)•Standards Search•Free Standards Alert Service•Document previews enabling users to make an informed purchase •Standards available in hardcopy and electronic (PDF or CD) format•www.sabs.co.za
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Karel Deist
Technical Specialist
SABS Head office
Pretoria
South Africa
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Wrong installations. NOTE: Information presented is based on
direct feedback from industry and users!
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Exploded geyser
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Directions??
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Poor plumbing.
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Bent rafters
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Change a non pressure to high pressure then this happens.
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Roof leak due to wrong instalation.
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Backyard design, that is why we need standards
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Plastic pipes ONLY for indoor use
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Plastic pipes ONLY for indoor use
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Local manufactured products
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SANS 1307 Solar water heating systems
All SANS 6210 tests
Thermal performancetests SANS 6211-1
4.4 Hot water tank(SANS 151)
4.6 Thermal insulationd) (UV test)
4.8.2 Fittings(SANS as req)
SANS 60335-2-21
General Inspection & Markings
4.12 Materials
Fibre cement
Polymeric materials
Stainless steel
Copperaluminium
Waterabsorption
Sealants
System installation
Thermal Test
Degree of mix
Install in test room
Heat loss test
4.2 Stagnation
4.3 Mechanical strength
4.4 Rain penetration
4.5 Resistance to hail
4.6 Freeze test
Destruct the Sample
4.7 DZR
4.8 Water Absorption
4.9 Corrosion
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SANS 1307 Solar water heating systems
All SANS 6210 tests
Thermal performancetests SANS 6211-1
4.4 Hot water tank(SANS 151)
4.6 Thermal insulationd) (UV test)
4.8.2 Fittings(SANS as req)
SANS 60335-2-21
General Inspection & Markings
4.12 Materials
Fibre cement
Polymeric materials
Stainless steel
Copperaluminium
Waterabsorption
Sealants
System installation
Thermal Test
Degree of mix
Install in test room
Heat loss test
4.2 Stagnation
4.3 Mechanical strength
4.4 Rain penetration
4.5 Resistance to hail
4.6 Freeze test
Destruct the Sample
4.7 DZR
4.8 Water Absorption
4.9 Corrosion
Thermal Performance
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SANS 1307 Solar water heating systems
All SANS 6210 tests
Thermal performancetests SANS 6211-1
4.4 Hot water tank(SANS 151)
4.6 Thermal insulationd) (UV test)
4.8.2 Fittings(SANS as req)
SANS 60335-2-21
General Inspection & Markings
4.12 Materials
Fibre cement
Polymeric materials
Stainless steel
Copperaluminium
Waterabsorption
Sealants
System installation
Thermal Test
Degree of mix
Install in test room
Heat loss test
4.2 Stagnation
4.3 Mechanical strength
4.4 Rain penetration
4.5 Resistance to hail
4.6 Freeze test
Destruct the Sample
4.7 DZR
4.8 Water Absorption
4.9 Corrosion
Mechanical Integrity
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SANS 1307 Solar water heating systems
All SANS 6210 tests
Thermal performancetests SANS 6211-1
4.4 Hot water tank(SANS 151)
4.6 Thermal insulationd) (UV test)
4.8.2 Fittings(SANS as req)
SANS 60335-2-21
General Inspection & Markings
4.12 Materials
Fibre cement
Polymeric materials
Stainless steel
Copperaluminium
Waterabsorption
Sealants
System installation
Thermal Test
Degree of mix
Install in test room
Heat loss test
4.2 Stagnation
4.3 Mechanical strength
4.4 Rain penetration
4.5 Resistance to hail
4.6 Freeze test
Destruct the Sample
4.7 DZR
4.8 Water Absorption
4.9 Corrosion
Geyser & Element
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TEST STATISTICS
Solar Water Heater Tests
0
20
40
60
80
100
120
140
2006 2007 2008 2009 2010 projected
nu
mb
er o
f te
sts
thermal test Mechanical test
30% Failures
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SA National Standard for Domestic Solar Water Heaters
• The Primary Standard applicable in South Africa for solar water heaters is
• SANS 1307 :2009 Domestic solar water heaters
• The following SA National Standards are referenced within SANS 1307 and hence compliance to requirements is required:
• SANS 151:2008 Fixed electric storage water heaters
• SANS 60335-2-21:2000 Safety of household and similar electrical appliances Part 2: Particular requirements for storage water heaters
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Outdoor Exposure Test Site, SABS Pretoria
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SANS 1307:2009 - Requirements Mechanical Tests – SANS 6210
• 5.2 Stagnation test for collector• Low failure rate only on flat plate (not vacuum tubes)
• Condensation
• Good insulation required and correct installation
• 5.3 Mechanical strength• Fatigue test (250 000 cycles) and hydrostatic pressure test
• Vacuum test – most pass
• Low pressure, many failures
• High pressure, most pass
• Quality of welds is critical
• 5.4 Rain penetration of collectors• 5 min per 30min for a period of 3 hours
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Torque test. 115 Nm.
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Rain test.
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SANS 1307:2009 – RequirementsMechanical Tests – SANS 6210
• 5.5 Resistance of collectors to Hail damage
• 12 perpendicular impacts from the ice gun, each of impact energy of 11J ±1 J
• Changed in revised 2009 standard
• Vacuum tubes, previously failing; now better quality and most passing test
• Flat plates OK
• 5.6 Resistance to Freezing
• Cold room at -20 oC
• Food grade glycol suitable
• Circulation pump with battery backup
• Insulation important
• Other Tests: 5.7 DZR, 5.8 Water absorption, 5.9 Corrosion resistance
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Hail test, 11 + - 1 j
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Measure the speed of the hail ball. 11.11 J
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Freeze room.
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Freeze test -20 ºC
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Freeze failure
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Fatigue test, required: 250 000 cycles
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Fatigue failure, 17000 cycles, required: 250 000
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SANS 1307:2009 - RequirementsThermal Properties – SANS 6211-1
• Advanced (Outdoor) Thermal Performance Exposure test
• Gives Q factor (measure of energy saving) for complete solar system
• Minimum of 6 days exposure
• 10 – 25 MJ/m, range used to give average performance
• Regression analysis to give Q Factor for whole year
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Test bay
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Control room
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Any Questions