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Vic Plant Room Nz Water, Ieq Targets

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Jessica Bennett is currently studying towards a Master of Building Science at Victoria University of Wellington's School of Architecture, researching the affect that apartment design has on occupant health, comfort and well-being. Previously she has completed a Bachelor of Building Science with Honours researching apartment design, indoor air quality and New Zealand Building Code regulations. From 2006 she has worked part-time at BRANZ as a Building Performance Scientist, undertaking weathertightness assessments for Appraisal Certificates as well as simulation work on indoor environmental quality (IEQ), energy efficiency and climate change.

Jessica's interests include apartment design & refurbishment, occupant health, comfort & well-being, and the IEQ of buildings. Her role in The Plant Room (Wellington SHaC Team) involves providing technical information and advice as well as undertaking modelling and simulation of the proposed design.

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Vic Plant Room Nz Water, Ieq Targets

  1. 1. Preparing a Technical Report SHAC 09 Jessica Bennett, Krystle Stewart, Alexandra Hills The Plant Room
  2. 2. SHAC Judging Criteria <ul><li>Energy </li></ul><ul><li>Water </li></ul><ul><li>Materials </li></ul><ul><li>Waste </li></ul><ul><li>Indoor Environmental Quality (IEQ) </li></ul>
  3. 3. Targets and Benchmarks <ul><li>Energy, Water, Waste </li></ul><ul><ul><li>Target or Benchmark </li></ul></ul><ul><ul><li>Saving a set percentage in comparison to an average or reference house </li></ul></ul><ul><li>Materials </li></ul><ul><ul><li>Principles behind sustainable material choices </li></ul></ul><ul><li>IEQ </li></ul><ul><ul><li>Quality targets based on minimum requirements for health, comfort, well-being and safety </li></ul></ul>
  4. 4. Setting Targets and Benchmarks <ul><li>What data is available for an average or reference house? </li></ul><ul><li>What national and/or regional legislation or requirements are there? </li></ul><ul><li>What international legislation or requirements are there? </li></ul><ul><li>Are there best practice or case study examples we can learn from? </li></ul><ul><li>From this, what is a realistic, achievable benchmark that pushes the boundaries? </li></ul>
  5. 5. Finding information <ul><li>Building Regulations & Legislation </li></ul><ul><ul><li>New Zealand/Regional </li></ul></ul><ul><ul><ul><li>New Zealand Building Code and Standards </li></ul></ul></ul><ul><ul><ul><li>District Councils </li></ul></ul></ul><ul><ul><li>International </li></ul></ul><ul><li>Organisations </li></ul><ul><ul><li>New Zealand </li></ul></ul><ul><ul><ul><li>BRANZ, Beacon, EECA </li></ul></ul></ul><ul><ul><li>International </li></ul></ul><ul><ul><ul><li>CIBSE, IEZ, WHO </li></ul></ul></ul><ul><li>Internet Search </li></ul>
  6. 6. Verifying and Achieving Targets <ul><li>Monitoring & Assessment </li></ul><ul><ul><li>Measurement </li></ul></ul><ul><ul><li>Auditing </li></ul></ul><ul><li>Simulation </li></ul><ul><ul><li>Thermal/Energy </li></ul></ul><ul><ul><li>Lighting </li></ul></ul><ul><ul><li>Acoustics </li></ul></ul><ul><li>Behavioural Studies </li></ul><ul><li>Post Occupancy Evaluations </li></ul>
  7. 7. Determining Improvement Benefits <ul><li>To determine potential benefits </li></ul><ul><ul><li>Case study information </li></ul></ul><ul><ul><li>Simulations </li></ul></ul><ul><li>To determine cost </li></ul><ul><ul><li>Monetary cost </li></ul></ul><ul><ul><ul><li>Cost benefit analysis </li></ul></ul></ul><ul><ul><li>Environmental cost </li></ul></ul><ul><ul><ul><li>Life cycle assessment </li></ul></ul></ul><ul><ul><ul><li>Embodied energy analysis </li></ul></ul></ul>
  8. 8. Water <ul><li>BRANZ WEEP Project Pilot Study </li></ul><ul><ul><li>Water Energy End Use </li></ul></ul><ul><ul><li>Water use in 12 Kapiti Houses monitored in 2007 </li></ul></ul>Reference Data
  9. 9. Water <ul><li>From WEEP, average internal water use estimated at 149.2 l/d/p </li></ul><ul><li>For a 3 person home, annual water use is estimated at 163,374 l. </li></ul><ul><li>Wellington City Council has identified that the Wellington region currently has the highest water consumption per capita of all NZ cities </li></ul><ul><li>Based on the average water end-use, a greywater filtering system could save 60% of the summer water use and 51% of the winter water use (EcoBob) </li></ul>Reference Data
  10. 10. Water Best Practice/Case Study Examples & Benchmarks Beacon (NZ) WHO Clovelly House (Sydney) University of Arizona Total Saving 40% - 75% 65% Total Use - 70 l/p/d - - The Plant Room 98,024 l 96,650 l 40,843 l 57,180 l
  11. 11. Water <ul><li>Benchmark for The Plant Room </li></ul><ul><li>Preliminary Target; </li></ul><ul><ul><li>75% saving in water use against the reference data obtained from the WEEP Pilot Study </li></ul></ul><ul><li>Based on; </li></ul><ul><ul><li>This target draws from another inner-city sustainable project – Clovelly House </li></ul></ul><ul><ul><li>Also based on the fact that currently 60% of water use is easy saved through grey filtering alone </li></ul></ul><ul><li>Achieved through; </li></ul><ul><ul><li>Greywater Filtering </li></ul></ul><ul><ul><li>Water Efficient Installations </li></ul></ul><ul><ul><li>Onsite Wetland to effectively deal with excess stormwater </li></ul></ul>
  12. 12. IEQ – Indoor Temperatures <ul><li>Indoor Environmental Quality </li></ul><ul><ul><li>Indoor Air Quality (IAQ), Ventilation </li></ul></ul><ul><ul><li>Lighting </li></ul></ul><ul><ul><li>Acoustics </li></ul></ul><ul><ul><li>Thermal Environment (Temperatures) </li></ul></ul><ul><ul><li>Internal Moisture (Relative Humidity) </li></ul></ul><ul><li>Currently very little national data on an average house, these targets as set as minimum requirements for health, comfort, well-being and safety </li></ul>
  13. 13. IEQ – Indoor Temperatures Reference Data, Recommended Targets New Zealand Building Code (NZBC G5) HEEP (BRANZ) World Health Organisation Recommended Minimum Indoor Temperature Currently 16°C shall be maintained in habitable spaces, bathrooms and recreation rooms. This only applies to old people’s homes and early childhood centres. Proposed changes to the NZBC say that buildings should be designed to keep temperatures to 20° - 28.5°C (15% PPD) with 40% Relative Humidity Mean winter temperature of 10.5° - 23.8° C. Mean summer temperature of 16° - 26°C Measurements taken from monitoring of HEEP houses in New Zealand 16°C is recognized as a minimum temperature for health. 18° - 24°C is recognised as ‘comfortable’.
  14. 14. IEQ – Indoor Temperatures <ul><li>Minimum Target for The Plant Room </li></ul><ul><li>Preliminary Target; </li></ul><ul><ul><li>18° - 24°C indoor temperature range </li></ul></ul><ul><li>Based on; </li></ul><ul><ul><li>WHO minimum recommendations </li></ul></ul><ul><ul><li>Currently there is no data on what New Zealanders feel comfortable in </li></ul></ul><ul><li>Achieved through; </li></ul><ul><ul><li>Appropriate passive solar design principles (i.e. thermal mass, solar gain) </li></ul></ul><ul><ul><li>Occupant control of indoor temperatures </li></ul></ul>

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