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Modelling sustainability in water supply and drainage with SIMDEUM® Ilse Pieterse-Quirijns, Claudia Agudelo-Vera, Mirjam Blokker.

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Presentation on theme: "Modelling sustainability in water supply and drainage with SIMDEUM® Ilse Pieterse-Quirijns, Claudia Agudelo-Vera, Mirjam Blokker."— Presentation transcript:

1 Modelling sustainability in water supply and drainage with SIMDEUM® Ilse Pieterse-Quirijns, Claudia Agudelo-Vera, Mirjam Blokker

2 climate change Background: problem description sustainability in supply and drainage with SIMDEUM® energy costs energy efficiency recovery of energy from wastewater population growth increased urbanisation increased consumption reuse of wastewater harvesting of rainwater recovery of nutrients from wastewater promote sustainability

3 Purpose: contribution SIMDEUM® in sustainability sustainability in supply and drainage with SIMDEUM® Purpose: Contribution of SIMDEUM® in sustainability in supply and drainage to buildings: Case 1: energy efficient design of water heaters Case 2: grey water recycling and rainwater harvesting system Case 3: recovery of thermal energy and nutrients from wastewater

4 SIMDEUM®: model for water demand sustainability in supply and drainage with SIMDEUM® SIMDEUM SIMulation of water Demand, an End Use Model Philosophy:installation inside building: characteristics water using appliances users: water use behaviour residential diurnal cold and hot water demand patterns design rules for houses and apartment buildings non-residential diurnal cold and hot water demand patterns design rules for non-residential buildings (offices, hotels, nursing homes) Library typical water demand patterns SIMDEUM pattern generator

5 appliances presence when do they use water? for which reason? flow rate duration frequency desired temperature users dependent on user dependent on purpose of use bathroomtap kitchentap SIMDEUM SIMulation of water Demand, an End Use Model Philosophy:installation inside building: characteristics water using appliances users: water use behaviour SIMDEUM®: model for water demand sustainability in supply and drainage with SIMDEUM®

6 demand patterns at each tap during the day for cold AND hot water demand patterns for building during the day for cold AND hot water demand patterns for apartment building during the day for cold AND hot water SIMDEUM®: model for water demand sustainability in supply and drainage with SIMDEUM®

7 nursing home cold hot hotel hot cold apartment buildinghotcold

8 Case 1 SIMDEUM® in energy efficient design of water heaters

9 Case 1: energy efficient design of water heaters sustainability in supply and drainage with SIMDEUM® Design of heating systems in practice: Badly (over-)designed systems Why? outdated existing guidelines and guidelines do not cover hot water demand Hygienic problems (water quality, Legionella) Less energy efficient SIMDEUM based rules lead to comparable choice of heating system as based on measured hot water use In 2010: procedure to derive new design rules for cold and hot water based on SIMDEUM® In 2011: reliable prediction of peak demand values of cold and hot water for different buildings

10 Compare SIMDEUM-based design with proposal company: type of building design based on SIMDEUMproposal company volume [l]power [kW]volume [l]power [kW] apartment building I: standard 50060500110 apartment building II: luxurious) 50082100080 hotel I (small business) 500351000200 hotel II (large business) 1000604000200 hotel III (tourist) 25050740100 nursing home I: care needed residents 2503050045 nursing home II: self-contained apartments 500251000100 Dimensions proposed by company 2x to 4x dimensions from SIMDEUM SIMDEUM®: significant contribution in energy efficient design of heating systems Case 1: energy efficient design of water heaters sustainability in supply and drainage with SIMDEUM®

11 Case 2 SIMDEUM® in grey water recycling and rainwater harvesting system

12 Case 2: grey water recycling and rainwater harvesting system sustainability in supply and drainage with SIMDEUM® SIMDEUM

13 Building type Free standing houseMid-rise apartment flat Occupancy 4 people (1 family)56 people (28 apartments x 2 people) Roof area (m²) 60640 # of toilets 2 (1 in each floor)28 (1 per apartment) # of laundry machines 1 (in 1 st floor)28 (1 per apartment) # of showers/bathtubs 1 (in 2 nd floor)28 showers (1 per apartment) – No bath Grey and rain water system Single house collectionShared collection Week demand pattern (hourly time step) Case 2: grey water recycling and rainwater harvesting system

14 Non-potable demand (D Q2 ) = 65 m³ y -1 = 16 m³ y -1 p -1 Potential recycling = 85 m³ y -1 = 21 m³ y -1 p -1 Potential rainwater harvesting = 48 m³ y -1 = 12 m³ y -1 p -1 Treatment rate = 160 l d -1 = 40 l d -1 p -1 Non-potable demand (D Q2 ) = 1108 m³ y -1 = 20 m³ y -1 p -1 Potential recycling = 930 m³ y -1 = 17 m³ y -1 p -1 Potential rainwater harvesting = 512 m³ y -1 = 9 m³ y -1 p -1 Treatment rate = 2240 l d -1 = 40 l d -1 p -1 Optimisation for choice of storage capacity shows: 1.LGW recycling is more beneficial than rainwater harvesting, for the same storage capacity 2.Combine LGW and rainwater: maximum yield at smaller storage capacity Case 2: grey water recycling and rainwater harvesting system sustainability in supply and drainage with SIMDEUM®

15 SIMDEUM®: assists in proper choice of storage capacities and in understanding process dynamics in recycling systems Higher density of peoplehigher yield/efficiency Case 2: grey water recycling and rainwater harvesting system sustainability in supply and drainage with SIMDEUM®

16 Case 3 SIMDEUM® in recovery of thermal energy and nutrients from wastewater

17 Case 3: recovery of thermal energy and nutrients from wastewater SIMDEUM Purpose of water use for each appliance is known: time of use quantity temperature Provides information on wastewater quantity temperature quality (soap residue, medicines, nitrates) SIMulation of water Demand, an End Use Model Philosophy:installation inside building: characteristics water using appliances users: water use behaviour Recovery of energy and nutrients Demand model Discharge model sustainability in supply and drainage with SIMDEUM®

18 Case 3: recovery of thermal energy and nutrients from wastewater sustainability in supply and drainage with SIMDEUM® Demand Discharge SIMDEUM®: quantifies the energy and nutrient loads in discharge flows for recovery purposes

19 CONCLUSION sustainability in supply and drainage with SIMDEUM® SIMDEUM® reliable simulation of residential and non-residential cold and hot water demand patterns discharge characteristics: quantity, quality and temperature of wastewater SIMDEUM® to promote sustainability: 1.Energy efficient design: SIMDEUM based design rules reduce heater capacity with factor 2 to 4 2.Grey water recycling and rainwater harvesting: SIMDEUM assists in choice of storage capacities and continuous simulations 3.Recovery of energy and nutrients: SIMDEUM renders information on discharge characteristics SIMDEUM also for other countries, other buildings and scenario studies


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