SECTION 3: SUSTAINABLE DESIGN CONTENTS

Transcription

1 SECTION 3: SUSTAINABLE DESIGN CONTENTS 3.1 INTRODUCTION ENERGY CONSERVATION - UNIVERSITY POLICIES AND GUIDELINES Use and Occupation Electricity peak demand Internal Environment Conditions Sizing of Selection of Building Services Plant and Equipment Economy Cycle Cooling Refrigeration Space Heating Heat Recovery Building Automation System Automatic Controls GREEN STAR THE ENERGY IMPACT STATEMENT Requirement Contents ENERGY CONSERVATION ENGINEERING SERVICES AND EQUIPMENT Energy Targets Ventilation Fans Pumps Maintainability Domestic Hot Water Services 9 DESIGN STANDARDS CHANGE LOG FEBRUARY 2013 No changes Design Standards page 1 of 9

2 3.1 INTRODUCTION Sustainability at the University is about providing for today s needs without sacrificing the ability of future generations to meet their needs. What this means practically speaking is finding the most efficient and fair ways of operating from a financial, environmental and social perspective. A primary focus is on reducing the energy impact of our actions and taking a life cycle (cradle to grave, or cradle to cradle) approach when measuring this, meaning not just looking at the upfront capital cost of projects but also including such things as (but not limited to) the ongoing operating costs, the embodied energy in components that make up a project, reusability & multi-use of materials, transportation costs, etc.. Part of Sustainable Design is looking at buildings from a holistic point of view, therefore all new works needs to take into account its surrounding buildings and what they may be able to contribute (to minimise unnecessary repetition) for a new project, or what extra capability a new project may include to provide for existing buildings and make them more efficient. This is in line with the precinct heating and cooling strategy being rolled out across the Parkville campus. The main purpose of this section is to: Encourage readers to think about what might be better ways of doing projects Encourage readers to take a holistic approach to solving problems. Guide designers on how they can assist the University to achieve sustainability in operations 3.2 ENERGY CONSERVATION - UNIVERSITY POLICIES AND GUIDELINES Use and Occupation As a general principle, it is desirable that either: The interface between different user groups, activities and zones throughout the building be limited, and areas with similar energy requirements be grouped together, or Flexibility and modularity is built into design to allow for the constantly evolving/changing nature of the University Electricity peak demand The Consultant shall calculate the Maximum Demand and energy consumption, and discuss load management techniques with the Energy or Sustainability Manager within Asset Services Internal Environment Conditions Please refer to the Mechanical Services chapter of the Design Standards, Section Sizing of Selection of Building Services Plant and Equipment With respect to flexibility and energy performance, building services systems should be specified in accordance with the requirements outlined in this and other chapters of the Design Standards. The consultant/contractor shall confer with the University s Manager (Engineering and Infrastructure) regarding systems design and equipment selections such that the Design Standards page 2 of 9

3 approach to energy conservation is fully understood. Please refer to the Mechanical Services chapter of the Design Standards, Section 10.4, for the required minimum efficiencies for plant and equipment selections Economy Cycle Cooling Please refer to the Mechanical Services chapter of the Design Standards, Section Refrigeration Please refer to the Mechanical Services chapter of the Design Standards, Section Space Heating Please refer to the Mechanical Services chapter of the Design Standards, Section Heat Recovery Waste heat recovery from exhaust air, exhaust gas, condenser water, etc shall be examined and where practical implemented as a means of reducing energy consumption Building Automation System Most of the University s buildings are covered by a Building Automation System (BAS). The University s BAS Strategy aims to consolidate all existing and future BAS subsystems into a central building management system, so as to provide a single point of access for monitoring and control of all buildings through-out the campus. Full details of the BAS are found in Section 9: BAS and Controls Automatic Controls Electronic controls shall be specified instead of pneumatic controls. Where feasible these should incorporate features that facilitate energy use optimisation such as Optimum Start/Stop, Automatic Temperature Control, Occupancy Detection, Trend Logging, Metering, Energy Reporting, Automatic Set Point Reset etc. Specifications for BAS controls are given in Section 9: BAS and Controls. Consultants/contractors shall refer to the Engineering Services Manager for project specific BAS and Controls requirements. 3.3 GREEN STAR The University of Melbourne has committed to a minimum rating target of 5 Star Green Star for all new building developments, and 4 Star Green Star for all major building upgrades. Design teams should be familiar with the Green Star rating system. The following table summarises typically how the various members of the project team relate to Green Star credits. Design Standards page 3 of 9

4 Credits PM / University ESD Architecture Mechanical Electrical and lighting Fire Hydraulics Security Communications Audio visual Vertical transport Structure Landscape Acoustics Civil Management Man-1 Green Star Accredited Professional Man-2 Commissioning - Clauses Man-3 Building Tuning Man-4 Independent Commissioning Agent Man-5 Building Guides Man-6 Environmental Management Man-7 Waste Management Man-10 Learning Resources Man-11 Maintainability Indoor Environment Quality IEQ-1 Ventilation Rates IEQ-2 Air Change Effectiveness IEQ-3 Carbon Dioxide Monitoring and Control and VOC Monitoring IEQ-4 Daylight IEQ-5 Thermal Comfort IEQ-6 Hazardous Materials IEQ-7 Internal Design Standards page 4 of 9

5 Credits PM / University ESD Architecture Mechanical Electrical and lighting Fire Hydraulics Security Communications Audio visual Vertical transport Structure Landscape Acoustics Civil Noise Levels IEQ-8 Volatile Organic Compounds IEQ-9 Formaldehyde Minimisation IEQ-10 Mould Prevention IEQ-11 Daylight Glare Control IEQ-12 High Frequency Ballasts IEQ-13 Electric Lighting Levels IEQ-14 External Views Energy Eco-con Conditional Requirement Ene-1 Greenhouse Gas Emissions Ene-2 Energy Submetering Ene-3 Peak Energy Demand Reduction Ene-4 Lighting Zoning Ene-5 Unoccupied Areas Ene-6 Stairs Ene-7 Efficient External Lighting Ene-8 Shared Energy Systems Transport Tra-1 Provision of Car Parking Design Standards page 5 of 9

6 Credits PM / University ESD Architecture Mechanical Electrical and lighting Fire Hydraulics Security Communications Audio visual Vertical transport Structure Landscape Acoustics Civil Tra-2 Fuel Efficient Transport Tra-3 Cyclist Facilities Tra-4 Commuting Mass Transport Tra-5 Transport Design and Planning Water Wat-1 Occupant Amenity Water Wat-2 Water Meters Wat-3 Landscape Irrigation Wat-4 Heat Rejection Water Wat-5 Fire System Water Wat-6 Potable Water Use in Laboratories Materials Mat-1 Recycling Waste Storage Mat-2 Building Reuse Mat-3 Recycled Content & Re-used Products and Materials Mat-4 Concrete Mat-5 Steel Mat-6 PVC Mat-7 Timber Mat-8 Design for Disassembly Mat-9 Design Standards page 6 of 9

7 Credits PM / University ESD Architecture Mechanical Electrical and lighting Fire Hydraulics Security Communications Audio visual Vertical transport Structure Landscape Acoustics Civil Dematerialisation Mat-10 Flooring Mat-11 Joinery Mat-12 Loose Furniture Land use and ecology Eco-con Conditional Requirement Eco-1 Topsoil Eco-2 Reuse of Land Eco-3 Reclaimed Contaminated Land Eco-4 Ecological Value of Site Emissions Emi-1 Refrigerant ODP Emi-2 Refrigerant GWP Emi-3 Refrigerant Leaks Emi-4 Insulant ODP Emi-5 Stormwater Emi-6 Discharge to Sewer Emi-7 Light Pollution Emi-8 Legionella 3.4 THE ENERGY IMPACT STATEMENT Requirement An Energy Impact Statement (EIS) shall be completed for each new major University building project. The EIS has been specifically developed as a design tool to focus the attention of designers in all disciplines on solutions that ensure efficient energy use Design Standards page 7 of 9

8 throughout the building's life. The statement can be produced as part of the documentation required for Green Star credit Ene-con and Ene-1, provided that it includes the information listed in Section The Statement prepared by the Mechanical Services Consultant shall be submitted to the Engineering Services Manager at the Design Stage of the project. Supporting material, if applicable, shall be attached to the Statement. The Consultant shall also provide an estimate of the additional annual energy costs arising from the project over the subsequent three year period. It is the University s preference that the use of building integrated renewables is considered for each project and discussed with the Engineering Services Manager at inception stage. Detailed feasibility studies may be requested based on the outcome of these discussions. These should be produced and delivered to the University during concept design stage (and be compliant with any delivery requirements of sustainability benchmarking systems such as Green Star) for consideration highlighting the following: Contents System type and physical parameters Any applicable legislative requirements Potential energy savings per annum Projected carbon reduction per annum Estimated investment cost Payback period over investment cost Ongoing operational and maintenance costs The Energy Impact Statement shall include the following information: Expected Energy Consumption (type & volume) and per square metre of GFA. The percentage of the building (by floor area) being air conditioned shall be stated. In considering central systems, due provision shall be made for reticulation losses and the provision allowed recorded. Descriptions of any special energy saving measures or features that have been included in the proposal (including building integrated renewables). 3.5 ENERGY CONSERVATION ENGINEERING SERVICES AND EQUIPMENT Energy Targets An Energy index (MJ p.a./m 2 ) shall be determined for the building in order to provide a measure of the energy efficiency of the design, the impact of any special requirements of the Project Brief, and the achievement of energy efficiency in subsequent operation Ventilation Fans Fan power shall be minimised by: Designing ducting and equipment for low static resistance to require low fan pressure; Using variable air flow volume (variable speed drive) to reduce fan power at part load; Design Standards page 8 of 9

9 Selecting the fan motor for high efficiency Pumps Pump design shall: Avoid the specification of undersized piping systems and equipment which require high pump energy input; Include consideration of sequenced steps or modulations of pumping capacity for economy; Consider variable speed drives and energy efficient motors Maintainability The Design Team shall consider the maintainability of the plant. Ease of access to components requiring maintenance facilitates better maintenance procedures and this prevents excess energy consumption Domestic Hot Water Services Consultants shall balance fuel, equipment selection, location and long term running costs in providing the most efficient hot water service for each project. Standing heat losses through long pipelines shall be avoided. Heating hot water boilers shall not be used in domestic hot water systems, as in warm weather they operate inefficiently on low load just to produce domestic hot water. The use of Solar Hot Water systems should be considered as an alternative option to conventional water heating systems where feasible. Design Standards page 9 of 9