Heat Pumps in the East of England Regional Microgen Coordinator - - PDF document

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heat pumps in the east of england
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Heat Pumps in the East of England Regional Microgen Coordinator - - PDF document

May 30, 2023 102 likes •350 views

Heat Pumps in the East of England Regional Microgen Coordinator Paul Bourgeois Paul Bourgeois g Energy Saving Trust in the East Energy Saving Trust in the East Impartial, independent advice service 60M citizens to act on climate

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SLIDE 1

Heat Pumps in the East of England g

Paul Bourgeois Paul Bourgeois Regional Microgen Coordinator

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SLIDE 2

Energy Saving Trust in the East Energy Saving Trust in the East

  • Impartial, independent advice service
  • 60M citizens to act on climate change

g

  • Energy, Renewables, Transport, Water, Waste
  • EST Advice Centre
  • EST Advice Centre

– Norfolk, Suffolk and Cambridgeshire Hertfordshire Bedfordshire and Esse – Hertfordshire, Bedfordshire and Essex

  • Call centre – 0800 512 012
  • Network of 11 regional Microgen co-ordinators
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SLIDE 3

Why heat pumps in this region? Why heat pumps in this region?

  • Off gas potential
  • Oil, LPG or electric heating

, g

  • EofE average 20% off gas

– 6% to 57% – 6% to 57%

  • From 27,720 Home Energy Checks

30% off gas – 30% off gas – 19% to 50%

  • 170,000 off gas households
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SLIDE 4

How does a Heat Pump work? How does a Heat Pump work?

  • Refrigeration system. The refrigeration cycle is an efficient

provider of heat as well as cooling.

  • There are two principle locations in the transfer of heat;
  • There are two principle locations in the transfer of heat;

– the place where heat is absorbed, (the source), and – where it is rejected, (the destination).

  • The compressor in the refrigeration system also produces

waste heat, and a significant proportion of this can be recovered.

  • Hermetically sealed and pressurised, thereby reducing noise,

space and heat losses. Absorbed heat is transported by refrigerant with low boiling

  • Absorbed heat is transported by refrigerant with low boiling

point through a sealed system of pipes and circulated by a compressor.

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SLIDE 5

How does a Heat Pump work? 2 How does a Heat Pump work? 2

  • A metering device controls the flow of refrigerant.
  • Refrigerant boils from a liquid to a vapour then condense back

to a liquid to a liquid.

  • Absorption and release of heat into and from the refrigerant.

Courtesy of Grenergy

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SLIDE 6

How does a Heat Pump work? 3 How does a Heat Pump work? 3

  • Continual process while the compressor is running and

circulating the refrigerant.

  • High pressure liquid refrigerant is fed through the metering
  • High pressure liquid refrigerant is fed through the metering

device into the evaporator heat exchanger

  • It evaporates into a vapour by absorption of heat from the heat

source (air, water or ground) passing through the heat exchanger.

  • The relatively cool return vapour is drawn back to the

The relatively cool return vapour is drawn back to the compressor.

  • The cooled return vapour from the evaporator is passed over

th t i di ithi th h t th the compressor motor windings within the heat pump, thus cooling the motor.

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SLIDE 7

How does a Heat Pump work? 4 How does a Heat Pump work? 4

  • Much of the energy absorbed by the electric motor driving the

compressor is absorbed into the refrigerant.

  • The combined heat from the source, plus much of the waste

The combined heat from the source, plus much of the waste energy from the electric motor is then compressed to a high temperature vapour. It t th d h t h h it i l d d

  • It enters the condenser heat exchanger where it is cooled and

condensed into a high pressure liquid ready to begin the cycle again.

  • The heat released during the process of condensing the

refrigerant to a liquid is rejected via the heat exchanger directly into air or transferred to water to heat the building. directly into air or transferred to water to heat the building.

  • The air or water temperature at this point could be 43ºC to

60ºC, depending on the design of the system.

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SLIDE 8

What are the benefits? What are the benefits?

  • Highly efficient use of energy input
  • Lower carbon emissions
  • Clean Energy Cashback (Energy Supplier)

– Proposed Renewable Heat Incentive – Proposed Renewable Heat Incentive – Microgeneration Certification Scheme (MCS)

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SLIDE 9

Why MCS? Why MCS?

  • Clean Energy Cashback
  • Clean Energy Cashback

– Feed In Tariff payments R bl H t I ti t – Renewable Heat Incentive payments

  • Promoted by DECC, Ofgem and the EST
  • Product and Installation company standards
  • Annual checks
  • Customer care (REAL Assurance)
  • Consumer and industry confidence

Consumer and industry confidence

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SLIDE 10

A Mark of Quality A Mark of Quality

Certification

Body Body Certification

Body Body

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SLIDE 11

Renewable Heat Incentive Renewable Heat Incentive

P d h t b i l A il 2011 & df th d

  • Proposed scheme to be in place April 2011 & grandfathered
  • RPI, index linked
  • Up to 5MW thermal and open to at least 2020

Up to 5MW thermal and open to at least 2020

  • 12% ROI all technologies except solar thermal - 6%
  • Deemed on small scale (calculated not metered)

( )

  • SAP (domestic), SBEM (commercial) & EPC (new build)
  • No Pre-capitalisation (industry/banks to develop)
  • Applies to New Build and Retrofit. Audited by Ofgem
  • Payments yearly <45kW & quarterly >45kW

B k d t d t 15th J l 2009 if tifi t d i t ll

  • Back-dated to 15th July 2009 if certificated installer
  • MCS up to 45 kW
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SLIDE 12

Technology Scale Tariffs Tariff lifetime Technology Scale Tariffs (pence/kWh) Tariff lifetime (years) Solid Biomass Up to 45kW 9.0 15 Biodiesel Up to 45kW 6 5 15 Biodiesel Up to 45kW 6.5 15 Bio gas Up to 45kW 5.5 10 Ground source heat pumps Up to 45kW 7.0 23 Air source heat pumps Up to 45kW 7.5 18 Solar thermal Up to 45kW 18 20 S lid bi 45kW 500k 6 5 15 Solid biomass 45kW-500kw 6.5 15 biogas 45kW-500kW 5.5 10 Ground source heat pumps 45kW-500kW 5.5 20 Air source heat pumps 45kW-500kW 2.0 20 Solar thermal 45kW-500kW 17 20 Solid biomass 500kW and above 1.6-2.5 15 Ground source heat pumps 350kW and above 1.5 20

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SLIDE 13

Technology Monitoring Technology Monitoring

Fi ld T i l Field Trials – Micro-wind – Heat pumps – Solar water heating – Condensing boilers – LED lighting g g – Heating controls, Insulation – Future – Future…

  • Smart home energy management

Micro CHP

  • Micro CHP
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SLIDE 14

The Heat Pump Trials

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SLIDE 15

Heat Pump Field Trials

  • Heat pumps are a proven technology in

Heat Pump Field Trials

Heat pumps are a proven technology in Europe but relatively new to the UK

  • Monitor a representative sample of ~85

i i d i i ll i in-situ domestic installations

  • Calculate performance
  • Investigate technical performance &

customer behaviour

  • Investigate potential carbon & cost

savings

  • Peer-reviewed methodology
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SLIDE 16

Project Funders j

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SLIDE 17

Site Selection

Dimplex

Manufacturer

Thermia Nibe IDM Air Underfloor 1 Bed Semi B l

Source Sink Property Type

IDM IVT Global Energy Borehole Slinky Air Blown Heating Bungalow 3 Bed Semi House Heat King Baxi Ecodan Aquifer Exhaust Air Pond Radiators DHW 4 Bed House 3 Bed House Ecodan Daikin Daalderop Pond Ground Panels Space Heating Only 1 Bed Flat Barn Conversion Worcester Bosch ERW Calorex Only Conversion Calorex Kensa

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SLIDE 18

Hot water

Generic

T1

13

Monitoring Design

DHW INDIRECT CYLINDER

Mains

Ambient Air Temp

1 15

Design

Water

H1

Electricity Supply to Heat pump Immersion

E2

Lounge Temp Bedroom Temp

3 4 14

Emitter

T2

E1

Heater

E2

5 9 11

Source

HEAT PUMP

9

H2

2

Ground Temp

6 10 12

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SLIDE 19

Temperature measurements Temperature measurements

  • 2x internal air

50 60

2x internal air temperatures

20 30 40

perature (

  • C)
  • External temperature
  • 10

10

Tem

  • DHW temperature

31/01 14/02 28/02 14/03 28/03 11/04 25/04 09/05 23/05 External Downstairs Upstairs DHW 25

  • Customer

satisfaction with

21 22 23 24

perature (

  • C)

temperatures

18 19 20 21

Internal tem

17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Time of day

Downstairs Upstairs

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SLIDE 20

System boundaries System boundaries

  • Agreed in discussion with UK and EU experts
  • 4 variables reported

4 variables reported – Coefficient of Performance – Seasonal Performance Factor F b th H t P d h l t

  • For both Heat Pump and whole system
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SLIDE 21

Peer Review Peer Review

  • Roger Nordman

– SP Technical Institute of Sweden (SEPEMO co-ordinator)

  • Fabrice Rognon

– Planair Consulting (formerly of the Swiss Federal Office of Energy)

  • Marek Miara

Fraunhofer Institute Germany – Fraunhofer Institute, Germany

  • Energy Technologies Institute

gy g

  • Wide consultation with relevant stakeholders
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SLIDE 22

Timeline

What When

D t l i l t F i 14th M Data analysis complete Fri 14th May EST to send draft report to funders & peer review Thu 27th May EST to develop key messaging w/c 1st June Peer review received Thu 10th June St i ti F i 11th J Steering group meeting Fri 11th June Public and technical report complete 25th June Briefing of EST staff w/c 28th June g Formal consultation with key stakeholders w/c 5th July Prepare for launch - Handover to Comms, and press teams w/c 12th July press teams Publish final report By 31st July

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SLIDE 23

Thanks Thanks Questions?