Plan. Objectives RUE RUE approach within the BAF Energy management organisation. Rational Use of Energy in the Belgian Armed Forces

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1 Plan Rational Use of in the Belgian Armed Forces Objectives RUE RUE approach within the BAF management organisation Integration of RUE in building design RUE in operation Results Objectives RUE RUE: optimization of 3 requirements RUE objectives RUE at all levels Why? Economy Ecology reserves not infinite source = economic good consumption = impact on environment in transformation out So: Long term security of supply Stable and fair prices Sustainable Development Protection of the environment source Fossil Renewable Transformation Efficiency Emissions Use Judicious choice of form Consumption minimization Providing comfort RUE approach within the BAF Growing awareness for -related issues Motivations: Economical (oil crisis in the 70 s) Ecological: RUE sustainable development Legal initiatives (regulations on insulation, efficiency of central heating boilers, plan for sustainable development ) Actions Implementation of management structure in the organisation Integration of RUE in building design Rational operation Operation of buildings and technical installations Information, education and awareness Level National Regional Local Organisation Department ACOS WB Infrastructure Division Control and Technique Section Bureau Environmental Education Centre Infrastructure Division Regional Boards of construction Military sites Responsible for Competences General policy sustainable development Central management (technical + economical aspects) Education of responsibles in environnement building design and construction Operation and maintenance technical installations Local follow up; information and awareness campaigns

2 Integration of RUE in building design Integration of RUE in building design Heat Constructional measures: (1) Thermal insulation Passive solar heating (window design, glazing choices, thermal mass) Technical measures: High efficiency boilers (2) condensing boilers Natural gas Automated climate control systems - BMS Heat recovery in ventilation systems Heat pump Electricity Constructional measures : Admission of natural light (window design, glazing choices, orientation) Sun blinds/ screens Technical measures: (3) Lighting: fluorescent and HID lights with electronic ballasts Motors: frequency regulators Automated control of exterior lighting Integration of RUE in building design efficient production/ renewable (4) Cogeneration (combined heat and power) Solar thermal systems (hot water, pools,..) Photovoltaics Wind (1) Thermal insulation of buildings Goal: optimal insulation of the building envelope Principle:minimization of life cycle cost (LCC): Initial investment /(m²envelope) cost/(m² envelope) for compensation of heat loss during life cycle Result: Insulation > legal minimum Higher comfort due to higher inner surface temperature Optimal insulation quality Optimal insulation quality cost (EUR/m2/year) OPTIMAL THICKNESS MINERAL WOOL INSULATION FOR HOLLOW WALLS 1,75 1,50 1,25 1,00 0,75 0,50 0,25 0, thickness (cm) Insulation cost cost Total cost cost (EUR/m2/year) 7,50 6,15 5,00 3,75 2,5 1,25 0 OPTIMAL GLAZING CHOICE normal 2,9 1,5 1,1 U value (W/m²K) Material cost Low-E coating cost Low-E coating + argon

3 Thermal insulation of buildings primary by reducing building heat losses Economy Lower LCC with equal inner temperatures Ecology emissions due to reduced primary (2) Condensing boiler Principle: recovery of latent heat contained in the water vapor of flue gases Heating value of fossile sources: kwh/m 3 - /l 0,6 1,11 10,08 10,35 fuel sensible heat natural gas latent heat Condensing boiler - principle Condensing boiler Water outlet Heat exchanger Water return To flue vent Condensate drain Combustion chamber Installation principles Boiler with overdimensioned or extra heat exchanger; resistant to corrosion, premix burner or modulating burner Heating circuits : variable water flow Heating elements: low temperatures radiators: Max 70/50 C underfloor heating: Max 40/35 C Air handling unit heater batteries: 70/50 C Chimneys: water and air tight Condensing boiler Economy Ecology primary because of regain of latent heat Pay-back time <3 y bonus RUE emissions due to reduced consumption

4 (3) efficient lighting Performance criteria: Visual comfort: Illuminance (Lux) Uniformity of illuminance Absence of dazzling Colour Rendering Index (CRI) Absence of shades Efficiency Power density: W/m² at 500 lux (3) efficient lighting Choice of lighting systems Offices: fluorescent lighting systems Industrial: fluorescent/hid lighting systems Incandescent/halogen lighting systems:limited for decorative lighting, replace where possible with compact fluorescent lights (3) efficient lighting Fluorescent lighting systems old generation 100 efficient lamps 90 mirror reflectors 70 electronic ballasts 50 control system consumption in %

5 (3) efficient lighting primary Economy New installations: Pay back time < 1 y Renovations: 8-10y (new fixtures) (relighting bonus ) Ecology emissions Due to reduced consumption 33 W/m² 1750 kwh/y 32 W/m² 13 W/m² 685 kwh/y (4) Cogeneration Cogeneration Principle: combined production - Power - Heat 100 cogeneration separate production 30 power heat

6 Cogeneration Cogeneration 90 C air inlet turbocooler (3 %) natural gas ~400 V E = 35% 70 C 85 C oilcooler (4%) watercooler (24%) engine radiation (1%) 50 C chimney exhaust gas exhaust gas condenser (8%) 120 C exhaust gas cooler (18%) C boiler Technical and economical conditions Simultanous need for heat and electricity Central heating plant Careful dimensioning Installation, operation and maintenance by specialized contractors on an all-in basis

7 (4) Cogeneration RUE in operation primary because of higher transformation efficiency Economy Reduction of yearly costs by 5-10 % Ecology Emissions CO 2 : reduced SO 2 : none Nox: reduced Management of technical installations: Correct maintenance Follow up by automated control Temperatures Operating hours (eg.time clocks, photoelectric cells for outdoor lighting, ) Information, education and awareness Turn off non essential equipment Closing doors and windows, management of technical installations Information, education and awareness By contract: HVAC installations, compressors, water purification plants, pumping-stations, Contract basis: operation + repair = all-in contract operation : maintenance + daily management repair : all-in replacement of defective parts for building heating : real contractual consumption Economy bonus = 50% of the realised economy Surplus 100% of the surplus charged 50 contracts 14 Mio EUR/year

8 Results - consumption Results - specific consumption % % GWh 600 kwh/m² power heat power heat Results CO 2 emissions t ton % heat elektricity