Paul Southall's CP2 Presentation
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Transcript of Paul Southall's CP2 Presentation
CP2 - Surface water source heat pumps
A Client / Operator perspective
Context
Heating the National Trust Potential - Its more than mansions!
• 88 castles
• 300 mansions
• 2000 agricultural tenants
• 39 villages
• 29,000 buildings
• 3749 oil tanks
• 42,000ha of woodland
• 700+miles of coast• 2 Goldmines
61 pubs
Experience ? You name it. We are having a go
But………•It has taken the NT 121 years to
get this complex.•We were historically not a very
informed “Good” client
Common themes
• No clear brief and scope for projects.
• Reliant on external consultants who were learning at our expense.
• Consultants not technology agnostic.
• Oversized systems were the norm.
• Management implications not understood or considered
• Hybridising systems to suit budget.
• Performance of old building for conservation not understood, and no clear performance monitoring set.
As a client the simple fact that the intended audience of the
guidance includes “owners and operators” in order to set
minimum industry delivery standards.
Fills our finance, procurement and senior management with
confidence that risks have been identified and understood at the
feasibility stage.
Reputational Risk
Clear outline for owners role. Would have thought the project manager in liaison with heat pump supplier,
designer would ensure correct commissioning.
A3.2 Responsibilities
Plas Newydd – starting point
2009128,000ltrs of oil pa1500ltrs pd in winter1,200,000Kwh pa300,000kwh of electricity
Site audit
Specialist survey
Maintenance contract
Optimisation
BMS strategy
Overhaul boiler
Dynamic heat loss model
Hand dryer trial
Full biomass feasibility
Heat pump pre feasibility
Roof insulation
Staff training
Flange and valve insulation
Low heat dynamic model
Detailed M&E assessment and room by room heat loss
Heat pump full feasibility
Secondary glazing
Hand dryer rollout
LED lighting
50kw PV installation
Smart metering
Heat pump design and EIA
Sub metering, meter monitoring
Hydro pre feasibility
Staff training
Site re audit
New heat main and zonal design
Conservation LED lighting
Marine source heat pump installation
Ceramic stove
New heat main
Localised solar thermal
Improving shutters and curtains
Visitor centre heating – pellet ceramic stove
Fabric insulation – tea room
Energy Hierarchy at Plas Newydd
Secondary glazing yes we did!
- 33%Through efficiency
Stage 2: FeasibilityObjectives:2.1 To assess environmental impacts and benefits 2.2 To identify and quantify the most suitable surface water sources and the best method for energy exchange2.3 To determine what permissions are necessary to access the water and what implications this may have2.4 To determine heat pump location and source-side heat exchanger or abstraction and discharge details (including costs estimates)2.5 To accurately estimate peak and seasonal heating and cooling demands and profiles2.6 To agree suitable load-side flow and return operating temperatures, flow rates and control strategies2.7 To determine the requirement for monovalent or multivalent operation 2.8 To assess operation and maintenance needs and costs 2.9 To conduct a financial analysis in order to comprehensively evaluate the installation options2.10 To analyse risks and carry out a sensitivity analysis Key support tasks: Review client brief Further pre-application discussions with statutory and regulatory bodies Prepare risk assessments Undertake third party consultations as required and any research and development
aspects Review and update implementation plan Develop:
sustainability strategy maintenance and operational strategy construction strategy health and safety strategy
Information exchange to next stage (design team): Feasibility study
concept design including outline structural and building services design associated project strategies preliminary cost information
Final project brief All notes, actions and outcomes
Objective 3.5 – To accurately determine peak heating and cooling demands and seasonal
energy consumption profiles
For existing non-domestic buildings it will normally be the responsibility of the customer to define the peak heat demand that they wish to contract for and to provide an estimate of their annual heat energy consumption.
However this analysis should be with the close involvement of the SWSHP designer
Objective 4.1 – To reduce adverse environmental impacts of construction
Best practice
• Best practice would include the provision of large and easily readable posters fixed to the site hoardings to outline the nature of the works and the proposed carbon benefits.
• Best practice would include the use of the Civil Engineering Environmental Quality System (CEEQUAL) with a target to achieve Very Good or Excellent. BREEAM or LEED could also be used.
Real World
• Best practice would be to get a Royal Institute of Chartered Surveyors (RICS) certified quantity surveyor (QS) to produce an independent full
cost breakdown of the project• Employ an independent clerk of works in line with the duties, roles and
responsibilities described by the Institute of Clerks of works and Construction Inspectorate of Great Britain to check and verify works as
they are completed.
Stage 7: DecommissioningObjectives:7.1 To decommission the heat pump7.2 To decommission the source side Key support tasks: Produce decommissioning plan Engage with Environment Agency and other regulatory bodies
on processes of decommissioning and the level of requirements for site reinstatement
Information exchange (to decommissioning team and regulatory bodies): Decommissioning plan Reports in line with F-Gas and other regulations Reports to Environment Agency and other regulatory bodies as
required
2.9.2 All analysis shall be conducted in accordance with accepted accountancy principals and cover an agreed period; up to 50 years for heat pump projects
• The costing in the feasibility study shall be based on realistic estimates to ensure sufficient funding is allocated. An appropriate contingency fund
(typically at least 25%) shall be allocated and clearly identified to cover unforeseen costs.
Who’s helped the NT at Plas Newydd
Castle HowardHeat Pump
Carbon TrustFunding for
dynamic modelling, options appraisal
School of Oceanographic SciencesSeabed surveys, temperature analysis. They have a boat!
HHALED Light Development
Local AuthoritiesMaintenance contracts
Good EnergyEnergy Trading advice
Centre for Alternative Technology
Hub, Students and specialists
RNLIWorking with the sea
and metallurgy
Poole Tidal Energy Partnership
Got us to think
Caernarfon Harbour Trust
Working with the sea and navigation authority
The Crown EstateFacilitation
British ports AuthoritySea Water Source
Heat pump
English HeritageSecondary glazing
and curtains
NRWAdvice and guidance
Assessment of performance
Average Cop = 4.69 Average SPF = 2.7