27/10/15. Rod Hughes Architect Director 2030 architects ltd. Penrith

Transcription

1 Rod Hughes Architect Director 2030 architects ltd. Penrith We specialise in high quality low carbon development, retrofit and community led design We often work with community groups to develop consensus led design projects, such as the refurbishment of community buildings. Our role is to both facilitate and inspire. 1

2 Low energy retro-fits Getting it right! Things to know before you start! What are your priorities? Reducing running costs Easier to manage Increased usage Better facilities Repairs Refurbishment/extension Making building more comfortable 2

3 What you need to know? What is the usage in hours per week? What are the utility bills? What repairs needed? What maintenance needed? What legal constraints are there? Who controls the building What you need to do? Get Energy Audit/condition survey Create consensus for future building use Establish brief and business plan Obtain good professional advice 3

4 Understand your Building Understand your Building 4

5 Traditional construction 5

6 Interstitial condensation Energy Audit 6

7 Energy Balance Evaluation Energy Balance Evaluation 27/10/15 You can customize this text in the Project Info dialog You can customize this text in the Project Info dialog Key Values Key Values General project data Location: Activity Type: Evaluation Date: TIRRIL Multiple 13/09/ :26 Building geometry data Treated floor area: Building shell area: Ventilated volume: Glazing ratio: 7 Building shell performance data Air leakage: 2.97 Outer heat capacity: - m2 m2 m3 % ACH J/m2K Heat transfer coefficients Building shell average: Roofs: External walls: Basement walls: Openings: U value [W/m2K] Specific annual demands Net heating energy: Net cooling energy: kwh/m2a kwh/m2a Energy consumption: Primary energy: Operation cost: CO2 emission: kwh/m2a kwh/m2a Secondary Electricity ACH J/m2K U value [W/m K] Specific annual demands Net heating energy: Net cooling energy: kwh/m2a kwh/m2a kwh/m2a Energy consumption: Primary energy: Operation cost: kg/m2a CO2 emission: Energy CO2 emission Quantity Cost Source type GBP/a kg/a Energy kwh/a Balance Evaluation Sum: m2 m2 m3 % Building shell performance data Air leakage: 0.21 Outer heat capacity: - Heat transfer coefficients Building shell average: Roofs: External walls: Basement walls: Openings: kwh/m2a GBP/m2a kg/m2a Energy Consumption by Sources Energy Source name TIRRIL Multiple 14/10/ :59 Building geometry data Treated floor area: Building shell area: Ventilated volume: Glazing ratio: 7 GBP/m2a Energy Consumption by Sources Source type General project data Location: Activity Type: Evaluation Date: Source name Secondary CO2 emission Quantity Cost kwh/a GBP/a 2281* Sum: kg/a * Electricity You can customize this text in the Project Info dialog Key Values GeneralEnergy projectquantities data Location: TIRRIL Activity Type: Multiple Evaluation Date: 14/10/ :26 Building geometry data Treated floor area: Building shell area: [%] Ventilated volume: Glazing ratio: Building shell performance data Air leakage: 0.21 Outer heat capacity: 100 EnergyHeat coststransfer coefficients Building shell average: Roofs: External walls: Basement walls: Openings: m2 m2 m3 % Specific annual demands [%] Net heating energy: Net cooling energy: 100 ACH J/m2K Energy consumption: Primary energy: Operation cost: 100 CO2 emission: 2 emission [W/m2K] UCO value [%] 100 kwh/m2a kwh/m2a kwh/m2a kwh/m2a GBP/m2a 1.78 * This amount of CO100 2 is absorbed in one year by 84 developed kg/m2a 4.36 pine trees. 9600Kwh Energy quantities Energy costs CO2 emission [%] [%] [%] * This amount of CO100 2 is absorbed in one year by 76 developed pine trees. 8600Kwh Energy Consumption by Sources Page 1 of 2 Energy Source type Source name Renewable Secondary CO2 emission Quantity Cost kwh/a GBP/a * Environment Electricity Sum: Energy quantities Page 1 of 2 kg/a Energy costs CO2 emission [%] [%] [%] * This amount of CO100 2 is absorbed in one year by 49 developed pine trees. Page 1 of Kwh 7

8 Monthly Energy Balance Supplied energy Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Page 2 of 2 Emitted energy [kwh] Lighting and equipment Hot water generation Mechanical heating Human heat gain Solar gain Transmission Infiltration Natural ventilation Hot water Energy evaluation Condition Survey 8

9 Pressure testing Thermal imaging Case study 1 Garrigill Village Hall Final Consensus Rankings Improve Kitchen New Floor Energy Efficiency Teen Facilities New Build Useable Bunk House Caretaker Storage Facilities Multi Functional Bar Area Car Parking Stage Toilets/ Shower Play Equipment Small Meeting Rooms Recycling Camp Site Smokers Shelter Lighting (Indoor) Cycle Storage BBQ Community buildings are for the community. You need to establish the real priorities. 9

10 Model feasibility Model feasibility 10

11 Case Study 2 Shap Library Feasibility options for community reuse Condition survey Costed alternatives Energy analysis Community consultation Options 11

12 Before and After 12

13 Occupant use Fabric Heat loss 13

14 Comfort Heating 14

15 Service runs Air quality 15

16 Moisture Lighting 16

17 Health Typical village hall 17

18 Fabric walls, floors, roofs, windows doors Draughts 18

19 Draughts Heat Loss 19

20 Lighting Heating 20

21 Water conservation Types of Insulation 21

22 Types of Insulation Types of Insulation 22

23 Types of Insulation Types of heating 23

24 Radiators Heat Pump Boiler Under floor Heating Heat Pump Boiler 24

25 Radiant Panels Radiant panels Warm Air heating 25

26 Types of heatsource Radiant panels Heat Pump Boiler Controls Timers Boiler interlink Weather Compensation 26

27 Indicative Costs Low or no cost 1. Draught stripping to minimise draughts Ensure that electricity meter i s read and bills paid for electricity 0.00 consumed not estimated. 3. Green tariff and appropriate for usage Replace old fluorescent fittings with LED Install spray taps Insulating paint to external walls Medium Cost 1. Insulation provided to roof of hall Single fan heat recovery to lobby Insulated curtains / blinds to windows in main hall Replace all external doors with insulated core doors (2No) Replace radiant heaters Underfloor heating to hall and install new cont rol system Add double glazing or secondary glazing High Cost 1. Replace roof and add insulation to create warm roof Ground source heat pump/air source heat pump Other thermal Improvements 27

28 Windows Upgrade window Use curtains Use shutters Doors Upgrade doors Use draught stripping Add porch 28

29 Other issues Energy efficient lights Use compact flourescents Use LEDS Use daylight! 29

30 Repairs Make use of repairs Replace and upgrade main elements Use green materials Condensation Look at ventilation Consider usage and insulation 30

31 Renewables PVS and FITS Windpower Solar Water Heating Hydro Power Biomass CHP Heatpumps Decisions Community Consultation Capital Cost Committee organisation Energy audit Ability to process bids Usage of hall Unbiased advice Labour and skills available 31

32 Case study 3 The refurbishment of an existing village hall formerly a Victorian School. EPC G Mould and condensation forced closure of kitchen. Cold and draughty hall discouraged usage by community Community consultation process defined the development brief and the main priorities 32

33 Improved comfort More flexible accommodation New kitchen Lowest running costs Lowest CO2 emissions Retain character of building Brief New extension provides additional accommodation and improves thermal efficiency of whole hall 33

34 Upgraded and transformed. Improved insulation, underfloor heating, ventilation system new rooflights, and new facilities Refurbished hall now more comfortable, better ventilated, cheaper to run and used by whole of local community. 34