Air-to-water heat pumps: Making the most of renewables. Richard Pickford, Daikin UK

Transcription

1 Air-to-water heat pumps: Making the most of renewables Richard Pickford, Daikin UK 1

2 Overview 1. ASHPs potential 2. Heat pump system design 3. Installation best practice 4. Renewable Heat Incentive 5. Conclusions 2

3 Section 1 ASHP potential Energy efficiency Lower fuel bills Reduced carbon emissions Wide applications Help and advice Section 1 Section 2 Section 3 Section 4 3

4 ASHP POTENTIAL What air-to-water heat pumps Can help you achieve Revolutionise the energy efficiency of your housing stock Lower tenants fuel bills - alleviating fuel poverty Upgrade tenants heating systems Reduce running carbon emissions from homes 4

5 ASHP POTENTIAL UK domestic Heating applications New build Change radiators Renovation / Replacement Keep radiators Oil boiler replacement Gas boiler replacement 12% 8% 10% 70% 5

6 ASHP POTENTIAL Daikin Altherma AWHP solutions for every application New build Change radiators Renovation / Replacement Keep radiators Oil boiler replacement Gas boiler replacement 12% 8% 10% 70% Daikin LT Daikin LT Daikin HT Daikin Hybrid Section 1 Section 2 Section 3 Section 4 6

7 ASHP POTENTIAL How Daikin can help Full range of solutions for new build and refurbishment programmes Design and selection advice Tenant presentations and consultations Link to local Green Deal Assessors Guidance on RHI funding applications Provide installer and bespoke tenant training 7

8 Section 2 Heat pump system design Location Sizing Insulation Performance Running costs Section 1 Section 2 Section 3 Section 4 8

9 HEAT PUMP SYSTEM DESIGN Where is a Heat pump suitable? Heat pumps can be fitted to both new or existing housing However the considerations vary widely depending on the property type and location As with any heating system, care should always be taken when specifying an air source heat pump Best practice recommendations should always be followed Very high insulation 9

10 HEAT PUMP SYSTEM DESIGN Sizing the heat pump Important factors Geographical location Size / type of building Construction materials Other heat sources Hot water requirement 10

11 HEAT PUMP SYSTEM DESIGN Sizing the heat pump Important factors MCS installer standard (MIS3005) Heat loss calculations (BS EN 12831) Geographical location Daikin Altherma Selection Software Energy and carbon savings 11

12 HEAT PUMP SYSTEM DESIGN Reduction in heat loss due to Improved insulation Scenario 1 90m2 semi-detached Unfilled cavity wall Single glazed windows <50mm loft insulation 0.7 air changer per hour 10.02kW heat loss Scenario 2 90m2 semi-detached Filled cavity wall Double glazed windows >75mm loft insulation 0.7 air changer per hour 4.72kW heat loss 56% reduction 12

13 Coefficient of Performance HEAT PUMP SYSTEM DESIGN Important notes about COP > Varies depending on operating conditions, e.g. ambient air temperature and design flow temperature > COP decreases with increasing flow temperature > It s important to use the right dimensioned heat emitter to maximise efficiency 13

14 HEAT PUMP SYSTEM DESIGN Heat pump Performance 14

15 HEAT PUMP SYSTEM DESIGN Heat pump Running costs Annual running cost for space heating ( ) Comparison of running costs for different heat sources Daikin Altherma 45 Daikin Altherma Oil Boiler 50 Heating Source Direct Electric Heating 15

16 Section 3 Installation best practice Competency Positioning MCS standard Section 1 Section 2 Section 3 Section 4 16

17 INSTALLATION BEST PRACTICE Installer Competency and requirements Although every application is different, the installer must ensure that he is suitably qualified and competent in all aspects of the system design and installation. > Refrigeration installation > Hot water installation > Electrical Installation > MCS Accredited > Ensure the installer is traiined on product selected 17

18 Installation of outdoor unit Positioning INSTALLATION BEST PRACTICE When installing the outdoor unit, the following points should be considered: > Safe? > Access? > Discharge route? > Noise? > Drainage? 18

19 INSTALLATION BEST PRACTICE Key to a successful Air source heat pump project Ensure the properties are sufficiently insulated prior to considering installing a heat pump Consider the location of the outdoor unit Installer selection and training Ensure the heat pump is designed and installed to the current MCS standard Ensure radiators are correctly sized to the design running conditions of the heat pump Select a manufacturer who has a high efficiency heat pump for all weather conditions and will be low maintenance for future years Ensure heat pump is easy to control and is suitable for all life styles Education for both staff members and tenants in operation of heat pumps is vital to ensure a smooth project 19

20 MCS Heat Pump Installer Standard MIS 3005 INSTALLATION BEST PRACTICE Standard includes all design and installation information Heat loss calculations The 100% rule Bivalent systems The Heat Emitter Guide 20

21 Section 4 Conclusions Section 1 Section 2 Section 3 Section 4 21

22 CONCLUSIONS Conclusions Choose the right solution Choice of heat pump Sizing and location suitability Quality installations Training Stakeholder communications 22

23 Thank you 23