Heat Pump System Design Course DevelopmentOctober 2020

Innovation in Higher Level Skills

Innovation in Higher Level Skills

Context

• GeoAtlantic Project• Supports deep geothermal

and ground source heat pumps in the Atlantic Region of Europe

• Includes training• IHLS Project• Focused on higher level

(level 4 to 7) training• Renewable energy on of

UoE themes

Innovation in Higher Level Skills

Heat pumps in UK

• Market growing well

• Training available for simple domestic installations

• Lack of higher level system design training

• Mistakes witnessed on small and large projects

Poor design examples

REEF building example• Client proposal for GSHP• M&E Engineers appointed

unable to correctly specify HP and ground array• Oversized unit• Heat loss wrong• Energy efficiency

options not included• Sized ground array on

peak heat demand only

Domestic examples

Retrofit Domestic

• Client keen for heat pump

• Air source suggested but required 3 phase upgrade

• Energy efficiency not explored

• GSHP possible at single phase

Course outline

• Heat loss calculations

• Heat pump options

• System design

• Heat distribution options

Heat loss calculations

• Correct sizing of heat pump

• Evaluation of energy efficiency options

• e.g. Insulation or MVHR

• Peak demand and annual energy demand

Heat pumps

• How a heat pump works

• Impact of source or distribution temperature on CoP

• Heat source options

Heat source options

Ground array design• Boreholes

• Sizing

• Geology and aquifer considerations

• Deep vs Shallow borehole options

• Shallow options

• Slinkies or straight pipe

• Sizing

• Energy piles

Hydraulic design

• Fluid mechanics principles

• Options for header and borehole arrangements

• Pipe sizing

• Pipe specification

• Pump specification

Water source

• Closed loop

• Open loop

• Heat exchanger specification

• Seawater options

• Environmental impact assessment

Air source

• External coil sizing

• Location

• Noise calculations

• Corrosion

• Seasonal efficiency

Full System design

• Heat distribution options

• Radiator, UFH, air blowers

• Hot water system integration

• Storage volume

• Managing legionella

• Sensors

• Integration of thermal storage

Heat distribution

• Performance implications

• Radiators

• UFH

• Warm air blowers

• Flow and return temps

• New build and retrofit

Integration with other technologies• Solar Thermal

• Biomass boiler / wood stoves

• Safety system options

• Gas boiler

• Ground loop implications

• Temperature options

• Metering

Scale

• Individual homes

• Multiple properties

• District heating options

• Central plant

• Distributed networks

• Large industrial buildings

Control

• Cost / Carbon saving / RE integration

• Smart control

• Individual pump control

• Multiple properties

• Battery integration

Design guides

• Use MCS as framework

• Apply to larger projects

• Provide tools to ensure design process is understood

• Design optimised for cost and performance

Accreditation

• Engaging with UK based GSHPA, HPA, CIBSE, MCS

• No clear pathway to accredit the course

Follow up discussion

• Focus areas right?

• Gaps?

• Other areas to explore?

• Contact

• Prof Richard Cochrane

• r.c.cochrane@exeter.ac.uk

• +44 (0) 1326 259 345