An Installers Guide to GSHP

© Kensa Engineering Ltd 2011

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Introduction to Kensa Heat Pumps

The Only UK Manufacturer of a Complete Range of Ground

Source Heat Pumps


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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

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UK Designers and Manufacturers of Heat Pumps


Product RangeMarket OverviewQualify the OpportunityRHI OverviewMCSProjectInstallationPricingMarketingNew for 2012Summary

Content


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


Compact Range

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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


High Temperature Range

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Plantroom Range

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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.


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).


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


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Current Position - BSRIA

Tables extracted from the BSRIA World

Renewable Report published in

November 2010


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Oil Prices

Oil has risen by 60%+ in the last 2yrs


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


David BroomTechnical Sales

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RHI Overview


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.


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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.


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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


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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


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


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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


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


MCS Accreditation

John Barker-Brown

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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


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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


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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.


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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


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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


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?


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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


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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?


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


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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


EXAMPLE PROJECT

Domestic Retrofit

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The Sizing and Pricing Process


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


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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


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


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


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


Space Heating and DHW Provided by GSHP with Underfloor Heating and Radiators


17kW H/Temp heat pump £10.40KCylinder £1KInternal work an materials £1.6K

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Internal Costing


SELECTION AND SIZING OF GROUND

ARRAYS

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Ground Arrays and Boreholes


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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


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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


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


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Boreholes Sizing


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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


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


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


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


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


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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


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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


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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


Case Studies, Referrals, Installations MapKensa WebsiteAwardsTarget Projects

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Marketing


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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


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www.kensaengineering.com


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.


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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


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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


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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


25kW High Temperature unitTwo Hybrid Single phase heat pumpsNew controls packageHeat MetersThe Ssssshhhooo

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New for 2012


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

Technology

An Installers Guide to GSHP