An Installers Guide to GSHP
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Transcript of An Installers Guide to GSHP
© Kensa Engineering Ltd 2011
1
Introduction to Kensa Heat Pumps
The Only UK Manufacturer of a Complete Range of Ground
Source Heat Pumps
© Kensa Engineering Ltd 2011
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Introduction to Kensa
UK Manufacturer of Heat pumpsProduction facility in CornwallCommercial office in ExeterOver 2500 Kensa units in ServiceOver 11 years production expertiseOver 15000 Slinkies installedISO 9001 ApprovedFull MCS accreditationIndustry Award Winners 2008/2009
© Kensa Engineering Ltd 2011
Kensa Engineering Ltd
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UK Designers and Manufacturers of Heat Pumps
© Kensa Engineering Ltd 2011
Product RangeMarket OverviewQualify the OpportunityRHI OverviewMCSProjectInstallationPricingMarketingNew for 2012Summary
Content
© Kensa Engineering Ltd 2011
Smallest appliance on the market.Simplest-to-install appliance.Remote commissioning. Designed for UK properties. Unique DHW control system.Complete product offeringCan be installed in external shelters.Full MCS compliance for product and installation. Very Linear pricing structure
No Immersion heaters inside
Product Strengths of Kensa
© Kensa Engineering Ltd 2011
Compact Range
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© Kensa Engineering Ltd 2011
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Kensa manufacture the largest single phase GSHP on the market.
On the UK Grid, a number of properties have single phase electricity only and the cost to upgrade to 3 phase can be extortionate.
Importing manufacturers can only supply up to 11 – 12kW.
Kensa manufacture product for the UK market, supplying units as large as 24kW single phase.
Product Designed for the UK
© Kensa Engineering Ltd 2011
High Temperature Range
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© Kensa Engineering Ltd 2011
Plantroom Range
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© Kensa Engineering Ltd 2011
Kensa’s Complete Product Range
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Kensa compact heat pump single and twin
compressor, plantroom heat pumps, slinkies, antifreeze, manifolds,
expansion vessels, buffer vessels, and
cylinders.
© Kensa Engineering Ltd 2011
The Opportunity – Market Projections
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UK Renewable Heat Supply Curve, published in July 2009 with Renewable Energy Strategy:
– 1,220,000 GSHP installations by 2020.
Committee for Climate Change – December 2010:
– 7,000,000 heat pump installations by 2030 (1 in 4 UK homes).
© Kensa Engineering Ltd 2011
Market Opportunity
Residential Private Sector
Residential Social Sector
Industrial / Commercial Sector
Retrofit Retrofit Retrofit
New Build New BuildNew Build
Sectors Currently Installing Ground Source Heat Pumps
© Kensa Engineering Ltd 2011
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Current Position - BSRIA
Tables extracted from the BSRIA World
Renewable Report published in
November 2010
© Kensa Engineering Ltd 2011
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Oil Prices
Oil has risen by 60%+ in the last 2yrs
© Kensa Engineering Ltd 2011
LPG has risen by the same %Oil at 65p/litre and 85% efficiency equates to 7.5pkW/hrLPG at 50p/l and 85% efficiency equates to 8.2pkW/hr Oil being StolenServicing costs & response maintenanceReplacement costsRecession
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Oil Boilers
© Kensa Engineering Ltd 2011
David BroomTechnical Sales
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RHI Overview
© Kensa Engineering Ltd 2011
The Opportunity - RHI
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Incentives are necessary to ensure Government meets its legally-binding 2020 targets.– 15% energy consumption from renewable’s– 12% heat from renewable’s– Current figure is 1.4% - Lowest figure in Europe besides
Malta and Luxemburg.
Feed-in Tariffs for electricity generating technologies launched April 2010.– Solar PV - 15 fold increase in installation volumes during first
two quarters over prior year.
RHI will provide 12% rate of return.
© Kensa Engineering Ltd 2011
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The Renewable Heat Incentive
£860m of funding allocated for next four years.
- £120m of funding allocated to all renewable technologies under Low Carbon Buildings Programme (2004- 2010).
Two Phases of implementation
- Phase 1 - Commercial- Phase 2 - Domestic.
All qualifying installations from July 15th 2009 will retrospectively qualify for the funding stream.
© Kensa Engineering Ltd 2011
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The RHI Phase 1 Tariffs - Commercial
Eligible Project Types:
Public Buildings Commercial Installation
Schools Industrial Processes
Hospitals Holiday Lets
Library’s B&B’s
Village Halls Hotels
Community Centre Swimming Pools (commercial)
Offices Communal Heating
© Kensa Engineering Ltd 2011
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The RHI Phase 1 Tariffs - Commercial
Fixed Tariffs - Inflation Linked Quarterly Payments for 20 years Payments based on metered output Bi-vailent systems accepted.
www.ofgem.gov.uk/e-serve/RHI/Pages/RHI.aspx
© Kensa Engineering Ltd 2011
Assumptions1000m² commercial PropertyEnergy use 72000kWh / yearOil Running cost 7.5p/kWhHeat Pump Running cost 3p/kWh
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Oil VS GSHP Commercial Example
Oil GSHP
Supply & Install cost £11,000 £38,450
Running cost £5,600 £2,160
Life time cost (25 years) £151,000 £92,450
Annual RHI payment @4.5p/kWh 0.00 £3,240
Total RHI Payment 20 years 0.00 £64,800
Total life time cost £151,000 £27,650
© Kensa Engineering Ltd 2011
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The RHI – So what about the domestic sector?
The RHPP £1250 One off Payment Apply for voucher via Energy Savings Trust website Submit voucher with commissioning certificate to claim Closing date - Install completed by 31st March 2012 Will qualify for the RHI Tariff A sample of projects will be monitored to evaluate performance.
Who can apply? Off Gas Only Primary Residence Must have basic energy efficiency measures in place. Microgeneration Certification Scheme approved Product Microgeneration Certification Scheme approved Installation
© Kensa Engineering Ltd 2011
RHI Domestic Tariff
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Tariff payments to start October 2012Installations back to July 15th 2009 will qualifyFinal consultation due to be released Nov/Dec 2011Tariffs confirmed April 2012 - 5p/kWh?Energy measurement - Metered/SAP/DeemedEligibilityMCS
© Kensa Engineering Ltd 2011
MCS Accreditation
John Barker-Brown
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© Kensa Engineering Ltd 2011
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What is MCS?
The MCS (Microgeneration Certification Scheme) certificates microgeneration
technologies used to produce electricity and heat from renewable sources.
The MCS is also linked to financial incentives which include the Renewable Heat Incentive.
It is designed to provide a level of protection and assurance to consumers as well as a sign of quality
MCS Accreditation
© Kensa Engineering Ltd 2011
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MIS 3005 – Heat Pumps
Requirements for contractors undertaking the supply, design, installation, set to work
commissioning and handover of microgeneration heat pump systems
MCS Accreditation
© Kensa Engineering Ltd 2011
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Why do I need MCS Accreditation for my project?
For GSHPs, both the technology and the installer must be MCS certificated to be eligible for grants and incentives; In this rapidly growing industry,
installers and products that carry the MCS Mark are likely to be seen as the preferred option in the
market place.
MCS is linked The Renewable Heat Incentive and also the Green Deal.
© Kensa Engineering Ltd 2011
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How do I obtain MCS accreditation?
Accreditation is via a certification body such as Corgi, Napit, BRE, etc.
You will need to demonstrate:-
1)An appropriate Quality Management System, which conforms to the MCS requirements (MIS001)
2)Details of competence in sizing, installing and commissioning heat pump systems, including site visit.
3)Membership of a consumer code, such as REAL
© Kensa Engineering Ltd 2011
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MIS 3005 v3 – Heat Pumps
Requirement Comment
Heat Loss Calculations Room by room losses by BS EN 12381 or equivalent
Heat Pump Sizing 100% sizing
DHW Sizing to BS6700
Emitter Design Including a room by room performance assessment for the heat emitters (star rating) and how this can be improved
Ground Heat Exchanger Design Using appropriate software or charts within MIS 3005
System Performance Running hours and costs based on kW/h per year.
Commissioning
© Kensa Engineering Ltd 2011
Requirement Comment
Heat Loss Calculations Room by room losses by BS EN 12381 or equivalent
Heat Pump Sizing 100% sizing
DHW Sizing to BS6700
Emitter Design Including a room by room performance assessment for the heat emitters (star rating) and how this can be improved
Ground Heat Exchanger Design Using appropriate software or charts within MIS 3005
System Performance Running hours and costs based on kW/h per year.
Commissioning
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How Can Kensa Help?
© Kensa Engineering Ltd 2011
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The Kensa MCS Umbrella Scheme
Kensa are an accredited MCS installer and manufacture MCS accredited products.
Providing installers a FREE of charge commissioning with a Kensa Technical Support Specialist based in the Kensa
Commercial Office.
This level of support through the installation, provides the installer and the client with MCS accreditation for the installation.
Eligible for RHI and Grant Funding
© Kensa Engineering Ltd 2011
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Project Qualification
How do we identify a feasible GSHP project?
Built 1990 or later
Located off the mains gas grid
Has underfloor heating
Has oversized radiators
Is quite well insulated
Has sufficient land to lay slinkies/ground arrays
Does the client have the budget?
© Kensa Engineering Ltd 2011
Sizing a new build project is EASY.
1. Kensa will size the unit based on 40w per M².
2.Send plans and SAP report to Plumbcenter.
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Sizing – New Build
© Kensa Engineering Ltd 2011
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Sizing – New Build
Internal area – Ground Floor
Total Internal area = 260m2
Heat load =
260m² x 40W p/m² (0.4) (If New Build)
=10400W
=10.4Kw
© Kensa Engineering Ltd 2011
EXAMPLE PROJECT
Domestic Retrofit
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The Sizing and Pricing Process
© Kensa Engineering Ltd 2011
260sq/m house currently heated by oilPost 1990 and could benefit from additional insulationBoiler Replacement dueHas radiators and TRV’sPerhaps UFH in placesPressurised heating & DHW systemPlans
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Project Opportunity
© Kensa Engineering Ltd 2011
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Internal area – Ground Floor
Total Internal Floor Area = 260m2
Sizing – Retrofit
Heat load =
260m² x 60W p/m² (0.6) (If retrofit)
=15600W
=15.6Kw
© Kensa Engineering Ltd 2011
Ideal sizing using SAP – Line 39!
SAP Report - Line 39a (January Heat Transfer Coefficient)
Project Location is ExeterHeat Loss Coefficient x Temperature
Difference -3°C (Min) to 21°C (Max) = 24°C rise
602.23 x 24 = 14453W
© Kensa Engineering Ltd 2011
Typically will have radiators sized for 75°MWTHeat pump will supply water at 55/60°CRadiators will need measuring to make sure they are adequately sizedMultiply radiator output by factor of 0.8Some radiators may need changingMicrobore can cause flow issuesOpportunity for client to turn boiler down this winter to test process
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Existing system
© Kensa Engineering Ltd 2011
Isolate the oil lineDrain down and disconnect the boiler and fluePower flush pipeworkRemove S plan systemInstall 3 port diverter valve (DHW)Reconnect the existing pipeworkConnect the ground array pipeworkOrganise oil disposal
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Existing plumbing
© Kensa Engineering Ltd 2011
Space Heating and DHW Provided by GSHP with Underfloor Heating and Radiators
© Kensa Engineering Ltd 2011
17kW H/Temp heat pump £10.40KCylinder £1KInternal work an materials £1.6K
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Internal Costing
© Kensa Engineering Ltd 2011
SELECTION AND SIZING OF GROUND
ARRAYS
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Ground Arrays and Boreholes
© Kensa Engineering Ltd 2011
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Slinky ground arrays
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Ground Array - Sizing
Heat pump size 17KW high temperature unitExample 50m slinky = 5Kw output Establish number of Slinkies (4)Spaced 5m apart 4 x 50 x 5 =1000m²Re-Charging – High water table - Soakaways
© Kensa Engineering Ltd 2011
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Installation Costs
Trenching by ground workersBack filling by ground workers8/12hrs per trench to dig/backfillPlumber connects tails to manifold and pressures testsPressure testing prior to backfilling
© Kensa Engineering Ltd 2011
17kW H/Temp heat pump £10.40KCylinder £1KInternal work £1.6KGround arrays / peripherals £4KTrench Installation £3KManifold/pressure test £1KTotal £21K
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Final Costing
© Kensa Engineering Ltd 2011
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Boreholes Sizing
© Kensa Engineering Ltd 2011
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Borehole Sizing
Insufficient ground 4 arraysDrilling – Specialist area60-100m deep6/8mtr separation20metres borehole depth = 1kWProbe and grouting from Driller£35/45 L/m Budget pricing3 x 100mtr required 12K
© Kensa Engineering Ltd 2011
17kW Hi/Temp Heat Pump £10.40KCylinder £1KInternal work £1.6K
Boreholes/ peripherals £12KTrench Installation £3KManifold/pressure test £1K
Total £29K
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Final Costing
© Kensa Engineering Ltd 2011
Existing Running cost– Oil at 65p/l Efficiency 85% = 7.5p/kWh
30,195kW x 7.5p/kWh + £150 Service Charge = £2,414.00
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Cost Savings – Example
• =£2414
© Kensa Engineering Ltd 2011
Heat Pump running cost- Electricity at 12p/unit- Efficiency of 250% - = 4.8p/kWh
30,195kWh x 4.8p/kWh = £1449.00
Cost saving. Oil less Heat pump running cost
£2414.00 - £1449.00 = £965.00
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Cost Savings – Example
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Cost Savings – Example Today
RHI Payment30,195kWh x 5.0p/kWh = £1509Paid for 23 Years.
Total Annual benefit (£965 + £1509)
= £2474.00
© Kensa Engineering Ltd 2011
Annual saving = £2,474Installation Cost = £21,000ROI = 11%
Payback in 8 Years.
Boreholes increase = £29,000ROI = 8%Payback in 12 yearsOil boiler change = £4K +
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Return On Investment
© Kensa Engineering Ltd 2011
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Project Responsibilities
Responsibility Project Member
Obtain plans and key project details from the client and pass to Plumbcenter
Installer
Initial sizing and quotation Kensa
Quote to the Installer Plumbcenter
Supply of heat pump Kensa
Project Survey (Heat loss calcs) Installer or Tonos
Installation of Heat Pump and Pipework Installer
Digging of trenches for slinkies/ground arrays Ground worker
Drilling of borehole Ground Source SW
© Kensa Engineering Ltd 2011
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Project Handling – How will we work together?
Enquiry made to Plumbcenter from installer
Kensa contacts installer directly to discuss project
Plumb Center quote installer
Installer places order with Plumb Center
Installer deals directly with Kensa during installation and commissioning
© Kensa Engineering Ltd 2011
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Installer Training
One Day Hands-On Training for installersTraining held at the manufacturing facility in TruroCourses run throughout the summer months – March to September.Ideal for the Installer prior to the first install
© Kensa Engineering Ltd 2011
Case Studies, Referrals, Installations MapKensa WebsiteAwardsTarget Projects
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Marketing
© Kensa Engineering Ltd 2011
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A Map of Kensa Installations
Over 2500 installations
Wide range of project sectors supplied including domestic, commercial, education, leisure, medical and hotels.
Library of case studies
Very satisfied customers prepared to act as referrals
© Kensa Engineering Ltd 2011
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www.kensaengineering.com
© Kensa Engineering Ltd 2011
Awards
Ashden Awards‘2008 UK Business of the Year’
2009 Housing Excellence Awards‘Product of the Year’
2009 Corgi Awards ‘Green Manufacturer of the Year
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2011 Ethical Consumer ‘Best Buy’ – Ground source heat pump.
© Kensa Engineering Ltd 2011
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“‘By far the most helpful company from a technical point of view. Kensa's understanding of our needs have been excellent and they communicate ideas and new products regularly with us.”
****“Great supplier - realistic and well designed product that is made for the UK Market.”
****“We have been installing Kensa heat pumps for some time and have always had an exceptional level of service
from a very knowledgeable team.”
Kensa Engineering recently secured the prestigious Green Manufacturer of the Year Award at the Corgi Awards 2009. Kensa achieved the highest average score, beating 20 other manufacturers including Worcester Bosch, Nibe, Vaillant, Baxi, and Viessmann.
Green Manufacturer of the Year 2009
© Kensa Engineering Ltd 2011
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Kensa Rated #1 Manufacturer
In July 2011, Kensa were rated the “best buy” in The Guardian, based on a report carried out by EthicalConsumer.org
© Kensa Engineering Ltd 2011
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Target Projects
Domestic or Commercial New Build
Waterside Developments
Commercial Projects such as schools, offices, retail outlets etc.
Barn conversions
Holiday lets, holiday parks especially with swimming pools
Retrofit properties off the gas grid, well insulated with land
© Kensa Engineering Ltd 2011
25kW High Temperature unitTwo Hybrid Single phase heat pumpsNew controls packageHeat MetersThe Ssssshhhooo
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New for 2012
© Kensa Engineering Ltd 2011
Niche market products Integration solutions – wood burningExperienceExpertiseDelivered the largest social housing project 300 units and growingCase HistorySpecialist – RNLIEasy to deal with
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Summary