14 July 2009

JOHN WHEATLEY COLLEGE

EAST END CAMPUS

Figure 5.7

6

8

John Wheatley College

East End Campus

A High Quality BREEAM Excellent Public Building with Environmental and

Sustainable Features (6,459 sq m)

Built within Budget – Handover 9 March 2007 and Operational 12 March 2007

9

Environmental and Sustainable Features

• Rainwater Harvesting and Recycling• Biomass Boiler• Photo-Voltaic Cells• Solar Collectors• Air Sourced Heat Pumps• ETFE Roof• Higher than Required Thermal Insulation• Lighting Control Systems• Passive Ventilation

10

Delivery Team

Project Manager – Capita Symonds Ltd

Cost Consultant – Doig & Smith

Architect – Aherns Burton and Koralek

Mechanical, Electrical, Structural and Civil Engineers – Buro Happold

Environmental Consultant – Ironside Farrah

Contractor – HBG (now BAM) Construction Ltd

11

CostsProject Cost £15m

Building Contract £9.1m

FF&E £800k

Building Cost £1,409 per sq mProject Cost £2,183 per sq m

Sustainable Features - 3.11% of Project Cost

Structural Funds (ERDF) £2,818,47919% of Project Cost

Site Environmental Microclimate

The site is very exposed on the South and East aspects

Prevailing Winds

Sunpath Diagram

Street noise and pollution

Prevailing Winds

Sunpath Diagram

The site is very exposed on the South and East aspects

Site Environmental Microclimate

Site Environmental MicroclimateSection – Optimum Single Sided Ventilation

Single-Sided Ventilation

1.20 m

7.0 m

1.65 m

1.0 m

Double Glazing For South Façade light transmittence of 0.6 or less or 1m overhang Low “E” coating to reduce heat loss Top and bottom opening lights preferable (minimum 125mm) Trickle vent to frame High performance seals

0

100

200

300

400

500

600

Naturally Ventilated Building

Air-Conditioned

Building

Annual Energy

Consumption (kWh/m2) Typical Practice Project

Target

Annual Energy Consumption Target Setting

Typical layout of modern biomass fired boiler

A biomass boiler uses waste material or renewable sources e.g. refuse, wood, crops etc to generate useful heat

Recommendation for a 100 kW heat-only system to be developed to meet the year round base load for the entire site

Woodchip fuel source from off-cuts from the forestry commission 100kW biomass boiler = 0.35GWh of carbon free energy per year for the John Wheatley College

Energy and Utilities Alternative Energy Systems

Rainwater

Rainwater Retention Tank

Water Conservation

Grey Water Retention Tank

Break Tank

Solar Powered Pump

WC

WC

Rainwater to Grey Water

Irrigation

Urinal

Cartridge Filter + UV

Site Environmental MicroclimateSection - materials

Roof mounted solar collectors

Exposed concrete soffits Good window design

Energy and Utilities Alternative Energy Systems

Biomass Boiler Plant

Solar Energy – Solar Collectors

Biomass Boiler Unit Rainwater and Grey Water Recycling Solar collectors for domestic hot water Rainwater and Grey Water Recycling PIR control of:

Lighting Security

Waste recycling

Carbon Trust Review

• Carbon Trust reviewed the College’s renewable energy elements and sustainable features

• Concluded the College had an efficient mix of renewable energy and other sustainable features

• Carbon Trust estimated largest saving and shortest payback from rainwater recycling

Post Occupancy Evaluation

• Now mandatory on new build projects

• SFC funded project with Cumbernauld, Carnegie, John Wheatley and Queen Margaret University

• Functional Performance Review

• Independent BREEAM Assessor appointed early

• Future building occupants consulted early

• Specify detail

• Consider secondary effects of equipment

• Develop a user guide for staff

• Train staff in building systems

• Record and monitor utility usage

• Use energy saving equipment

• Maintain the building

Sustainable Accounting

• Pilot project

• Energy Consumption

• Water Usage

• Materials and Product Consumption

• Waste Generation and Disposal

• Travel and Transport

• Other Sustainability Initiatives