nuno m. m. ramos no… · axonomÉtrico do dispositivo de admissÃo de ar ao subsistema sul...

Annex 41 take-off meeting – 1Vasco Peixoto de Freitas – Nuno M. M. Ramos

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Annex 41 take-off meetingFEUP-LFC contribution

Annex 41 take-off meetingFEUP-LFC contribution

Vasco Peixoto de FreitasNuno M. M. Ramos

FACULTY OF ENGENEERING – PORTO UNIVERSITY

LABORATORY OF BUILDING PHYSICS

Vasco Peixoto de FreitasNuno M. M. Ramos

FACULTY OF ENGENEERING – PORTO UNIVERSITY

LABORATORY OF BUILDING PHYSICS

Annex 41 take-off meeting– 2Vasco Peixoto de Freitas – Nuno M. M. Ramos

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PRESENTATIONPRESENTATION

• Introduction to FEUP-LFC

• Testing Facilities

• Modelling

• Projects

• FEUP-LFC in MOIST-ENG

• Conclusions

• Introduction to FEUP-LFC

• Testing Facilities

• Modelling

• Projects

• FEUP-LFC in MOIST-ENG

• Conclusions


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INTRODUCTION TO FEUP-LFCINTRODUCTION TO FEUP-LFC

HumanHuman resourcesresources�� PhD: PhD: 22�� PhD Students: 6PhD Students: 6�� MMSSc Students: 5c Students: 5

PATHOLOGYAND

REFURBISHMENT

PATHOLOGYPATHOLOGYANDAND

REFURBISHMENTREFURBISHMENTHYGROTHERMAL

BEHAVIOUR

HYGROTHERMALHYGROTHERMALBEHAVIOURBEHAVIOUR

ENERGYEFFICIENCY

ENERGYENERGYEFFICIENCYEFFICIENCY DURABILITYDURABILITYDURABILITYMATERIALSMATERIALSMATERIALS

FEUP-LFC BUILDING PHYSICS LABORATORY


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TESTING FACILITIESTESTING FACILITIES1. Measurement of

hygrothermal propertiesλλλλThermal Conductivity

δδδδv

Vapour Permeability

DwMoisture Diffusivity

Ventilation

Infra-red Thermography

2. Weather station

3. Walk-in climatic chambers


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MODELLINGMODELLING

Condensa 2000Vapour diffusionISO 13788

RH 2000Modelling relativehumidity inside dwellings

CONDUCHeat transfer 2Dthermal bridges

TRHUM 98 Modelling heat and moisture transfer in components (1D)


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PROJECTS: Hygroscopic InertiaPROJECTS: Hygroscopic InertiaProblem Model and Measurements

Results

� Vapour production

� Ventilation

� Hygroscopicity

( )∑=

−×

−

−−

×=

−n

jmji

jj

ev

esate

iv

isati

iv

iii

i ATR

TPTR

TPVNGTR

VdtdT

PTdtdP

1462 106.3

.)(.)(.3600

.106.3.

φφγφφ

0

10

20

30

40

50

60

70

80

90

100

0 300 600 900 1200 1500 1800

Tempo (h)H

umid

ade

Rel

ativ

a (%

)

HRi Sim. 1 (sem superfícies higroscópicas)HRi Sim. 2 (argamassa - 2 cm)HRm argamassa - 2 cmHRi Sim. 3 (argamassa - 4 cm)HRm argamassa - 4 cm


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PROJECTS: Rising Damp in Historic Buildings

PROJECTS: Rising Damp in Historic Buildings

Problem Experimental Device

Numerical Simulation Application

aprox. 0.80m0.50

43

21

LEGENDA:1 - ELEMENTOS METÁLICOS2 - PEÇA PREFABRICADA EM BETÃO3 - TELA DE PVC (1 mm)4 - PEDRA REACERTADA5 - AREIA6 - TUBO DE VENTILAÇÃO7 - GEOTÊXTIL

PORMENOR 1

PORMENOR 3PORMENOR 2

0.50

0.200.20

ESQUEMA AXONOMÉTRICO DO

DISPOSITIVO DE ADMISSÃO DE AR AO

SUBSISTEMA SUL

PORMENOR 1PORMENOR 3

Nave da Igreja

Capela Lateral

PORMENOR 2

54321

52 6 3 75 5 3 7 6


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PROJECTS: Natural VentilationPROJECTS: Natural VentilationProblem Measurements

Equipment Results

RPH = 3,96

y = -3,9642x + 5,2635R2 = 0,952

1,0

1,5

2 ,0

2 ,5

3 ,0

3 ,5

4 ,0

4 ,5

5,0

5,5

0 ,0 0 ,2 0 ,4 0 ,6 0 ,8 1,0 1,2

Tempo (h)

Ln (C

)

PHOTOACOUSTIC PHOTOACOUSTIC MULTIMULTI--GAS GAS ANALYZERANALYZER

CAPSULES PFTCAPSULES PFT

0,30,320,340,360,38

0,40,420,440,460,48

0,50,520,54

12 13 14 15 16 17 18 19 20 21

Temperatura Interior (ºC)

RPH (1/h)

12 3

46

7 8 9

5N

0

0,1

0,2

0,3

0,4

0,5

0,6

0,7

0,8

0,9

RPH local (1/h)

1 2 3 4 5 6 7 8 9

Compartimento


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PROJECTS: Infrared Thermography

PROJECTS: Infrared Thermography

Problem

Results

Equipment


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PROJECTS: Dimensional Stability of Wood

PROJECTS: Dimensional Stability of Wood

Problem Equipment

Measurements


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FEUP-LFC in MOIST-ENGFEUP-LFC in MOIST-ENG

Subtask1: Modellingand common exercises

0

10

20

30

40

50

60

70

80

90

100

0 300 600 900 1200 1500 1800

Time (h)

Rela

tive

Hum

idity

(%)

RHi Sim. 1 (no hygroscopic surfaces)

RHi Sim. 2 (mortar - 2 cm)

RHmortar Sim. 2

1. Modelling relative humidity variation inside rooms, especially moisture buffering effect

2. Common exercises at room level


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Subtask2: Experimental investigations

1. Database of moisture storage properties of building and finishing materials

2. Comparison of computer model results with laboratory tests

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

30 40 50 60 70 80 90 100

HRi (%)

(g/(m

2.h.

HR)

)

adsorption

desorption


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Subtask3: Boundary Conditions

1. Definition of Portuguese outdoor moisture loads

2. Definition of Portuguese indoor temperatures and moisture production in dwellings

0.0

2.0

4.0

6.0

8.0

10.0

12.0

14.0

16.0

18.0

20.0

0 300 600 900 1200 1500 1800

Time (h)

Out

side

Tem

pera

ture

(ºC

)

0.0

10.0

20.0

30.0

40.0

50.0

60.0

70.0

80.0

90.0

100.0

0 300 600 900 1200 1500 1800

Time (h)

Out

side

Rel

ativ

e H

umid

ity (%

)


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CONCLUSIONSCONCLUSIONS

• FEUP-LFC develops work on HAM motivated by the problems in Portuguese buildings

• FEUP-LFC has the support of the Portuguese member on the EXCO IEA ECBCS to participate in the MOIST-ENG project

• FEUP-LFC will contribute to MOIST-ENG with modelling work and laboratory experiments

• FEUP-LFC develops work on HAM motivated by the problems in Portuguese buildings

• FEUP-LFC has the support of the Portuguese member on the EXCO IEA ECBCS to participate in the MOIST-ENG project

• FEUP-LFC will contribute to MOIST-ENG with modelling work and laboratory experiments

nuno m. m. ramos no… · axonomÉtrico do dispositivo de admissÃo de ar ao subsistema sul...

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