Operable Louvres

Cross Ventilation

Roof Overhang

Retractable External Shading

Stack Ventilation

Maximised Indirect Daylighting

Zinc Cladding

High Thermal Mass

Solar PV Panels

High Performance Insulation

Extensive Green Roof

High Performance Triple Glazing

Sliding External Shutter

Trombe Wall

JAN

JUN

E

±0.00

+2.65

+6.23

±0.00

+2.65

+6.23

±0.00

+2.65

+6.23

Views To Park Street

!

-1000

-800

-600

-400

-200

0

200

400

600

800

1000

1200

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Ener

gy, k

Wh

Date

Annual Dwelling Energy Balance

Heat-Pump Solar Thermal Pump PV Generated

Lighting Appliances Net

4% 1%

-42%

11%

42%

Annual Energy Summary

Heat-Pump

Solar Thermal Pump

PV Generated

Lighting

Appliances

0

1

2

3

4

5

6

7

Living Areas Childrens Bedroom

Ground Bathroom

Office Master Bedroom

Loft

Day

light

Fac

tor, %

Dwelling Daylight Factor

Annual House Average BS Average

0

200

400

600

800

1000

1200

1400

Living Areas Childrens Bedroom

Ground Bathroom

Office First Bathroom

Master Bedroom

Loft

Illum

inanc

e, lux

Average Lux Levels

21-Dec Average 21-Jun Average

!!!!

!

0 10 20 30 40 50 60 70 80 90 100

Iteration 1

Iteration 2

Iteration 3

Iteration 4

% Annual Days

ASHRAE 55 Adaptive Model Comfort Statistics

% days within Adaptive Model 80% Comfort Bounds

% days outsideAdaptive Model 80% Comfort Bounds

0 10 20 30 40 50 60 70 80 90 100

Bedroom

Living

Office

Combined

% Annual Days

ASHRAE 55 Adaptive Model Comfort Statistics

% days within Adaptive Model 80% Comfort Bounds

% days outsideAdaptive Model 80% Comfort Bounds

!

!

8101214161820222426283032

1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12

Prev

aling

Mea

n Tem

pera

ture

, ºC

Date

Modelling Iteration Annual Temperatures

Iteration 4 Iteration 3 Iteration 2 Iteration 1 Comfort Bounds

Overheating Metrics

Illuminance Diagram (21st Dec) - Upper FloorIlluminance Diagram (21st Dec) - Ground Floor

THER

MAL

MO

DEL

LING

ITER

ATIO

N C

OM

FORT

AN

ALYS

ISFIN

AL M

OD

EL C

OM

FORT

BO

UN

DS

DW

ELLIN

G E

NER

GY

ANAL

YSIS

COM

PETI

TIO

N W

EEK

DAY

LIGH

T AN

ALYS

IS

Daylight factors for each room meet and exceed British Standard averages, allowing decreased dependence on artificial lighting systems.

12Room

pm

!

! !

20.0

20.5

21.0

21.5

22.0

22.5

23.0

23.5

24.0

24.5

25.0

0:00

6:00

12:00

18:00 0:0

06:0

012

:0018

:00 0:00

6:00

12:00

18:00 0:0

06:0

012

:0018

:00 0:00

6:00

12:00

18:00 0:0

06:0

012

:0018

:00 0:00

6:00

12:00

18:00 0:0

0

10-6 10-7 10-8 10-9 10-10 10-11 10-12

Dry

-Bulb

Tem

pera

ture

, ºC

Date

Competition Week Temperature Profiles

Living Room Bedrooms Office Average

0

10

20

30

40

50

60

70

80

90

100

>21.00 to <=22.00 >22.00 to <=23.00 >23.00 to <=24.00 >24.00 to <=25.00

Hou

rs, %

Temperature Ranges, ºC

Competition Week Temperature Ranges

Living Room Bedroom Office Average

     

10

12

14

16

18

20

22

24

26

28

30

1-1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12

Tem

pera

ture

, ºC

Date

ASHRAE 55 Adaptive Comfort Model

Air temperature °C ASHRAE 55 Adaptive Model Comfort Bounds

MSc Environmental Design and Engineering

Building Solar Design Project – BENVGEE3

UCL Institute for Environmental Design and Engineering

Annual temperature profiles show improvements with each modelling iteration. The extreme variation in Washington’s climate conditions meant our dwelling had to be designed to counteract extremely low temperatures in the winter whilst preventing overheating in the summer. The final thermal model shows an internal temperature range of 17–27OC, tempered from the external temperature range of -16–37OC

Thermal comfort improvements established by the criteria set on ASHRAE 55.2013 Adaptive Model for free-running naturally conditioned spaces show that 93% of all daily hours fall within the 80% comfort bounds of the adaptive model.

Daily mean temperatures for the year fall within the thermal comfort criteria set by the ASHRAE adaptive model for free-running naturally ventilated buildings, based on the outdoor prevailing mean temperature.

Net-zero energy is achieved by reduced energy demands from passive heating and cooling, efficient lighting systems, and solar PV and hot water heating.

To assess the propensity of the dwelling to overheat in the summer, the CIBSE TM52 overheating metrics were used as a benchmark.

On average, the temperature profile is within the competition week comfort bounds 95% of all daily hours between October 6 and October 12. Temperatures outside the comfort range are at a maximum of 1.25OC outside the bounds.

High Performance Thermal Envelope with Small Ope ings to East and West, and Medium Sized Openings to North for Cross Ventilation and Indirect Daylighting

Solid and Monolithic Architecture Language

High Thermal Mass

Protective Skin

Open Plan/ Flexible Interior

Southfacing PV System

Southfacing Glazing and Trombe Wall for Solar Heat Gain and Views

Timber Deck and Shading(Overhang and Adjustable Shading)

LEGEND:

1 Lounge Nook2 Dining Nook3 Reading Nook4 Climbing Wall5 Play Nook6 Writing Nook7 Parents Nook8 Kids Nooks

Vegetation on Roof and in Courtyard

Modular Built-in Furniture

Flexible Wall Systems

Lightweight Upper Floor and Playnet

The Thompsons

THE NOOKALEXANDER CLIGMAN-HOWE. NICOLE IGNACIO. KANCHANOK SUWANCHOTE. JULIANE WOLTER

±0.00

+2.65

+6.23

5

6

1

2

LIVING

KITCHEN

HALL

COURTYARD

ROBEHWU

B

ENTRY

DECK

HALL/GUEST

DECK

1 KIDSROOM

2

3

4

OFFICE

MASTER BED

KIDSLOFT

GREEN ROOFGREEN ROOF

5

6

7

88

4

LIVING

KITCHEN

HALL

COURTYARD

ROBEHWU

B

ENTRY

DECK

HALL/GUEST

DECK

1 KIDSROOM

2

3

4

OFFICE

MASTER BED

KIDSLOFT

GREEN ROOFGREEN ROOF

5

6

7

88

4

LocationThe building is located on the southern side of Van Ness Street NW, and is surrounded by neighbouring residential buildings on the east and west. The south features views to the backyard, and undeveloped land adjacent to a church and a large residential development. The west-east orientation of Van Ness Street NW provide ideal conditions for a passive design approach.

BriefThe family was interested in a sustainably designed home that would provide shelter as well as flexibility, as the needs of their young family change over time. Scale and playful elements were important to the Thompsons – they wanted to ensure that their young children would find spaces to play without feeling overwhelmed by large, overwhelming rooms. The Nook was born out of the design themes of flexibility and playfulness.

DesignThe Nook features a solid, monolithic envelope which acts as a protective shell against unwanted solar gains from the west and east elevations, and from undesirable winds from the northwest. While there are a limited number of small windows on the east and west facade to provide natural daylighting and to prevent overheating in summer, the north-facing vertical windows are sized to maximise indirect daylighting and facilitate the building’s natural ventilation strategy. The dwelling was designed with large south-facing glazing to capture predominant southern winds for natural ventilation, passive solar gains, natural daylight, and views to the backyard garden.

Despite the sharp and strong aesthetic provided by the exterior monolithic façade, a softer, more informal and relaxed lifestyle is encouraged by the open layout and the use of timber, fabric, and concrete on all internal elements and the southern timber roof extension. The layout has been designed to focus on flexibility and adaptability of the living spaces during the day, passive heating and cooling throughout the year, and as the family grows with the dwelling. Various cosy nooks provide spaces for rest, play and privacy for the family. Movable wall systems increase the flexibility of room use.

is a passively heated and cooled net-zero energy home, with solar PV panels and evacuated tubes for domestic hot water providing enough electrical and thermal energy to offset the dwelling’s annual plug loads and domestic hot water demands. A monitoring system will be installed to measure the use of electricity, as well as temperature and humidity.

THE THOMPSONS

12Room

pm

GRANDPA TOMMY MOM DAD TAMMY

in

the bedrooms

0.1which includes

o�ce+living room

in

the bedrooms

0.1which includes

o�ce+living room

in

the bedrooms

0.1which includes

o�ce+living room

in

the bedrooms

0.1which includes

o�ce+living room

1

2

6

5

THE NOOK

RoofStanding Seam Zinc Cladding12mm Marine Grade Plywood30x50mm Timber BattensBreathable Membrane220mm PIR InsulationVapour Barrier150mm Reinforced Concrete

External WallStanding Seam Zinc Cladding12mm Marine Grade Plywood30x50mm Timber BattensBreathable Membrane220mm PIR InsulationVapour Barrier150mm Reinforced Concrete

HALL

HALL

Floor200mm reinforced concrete(polished)Vapour barrier200mm PIR Insulation

CROSS SECTION B

RoofStanding Seam Zinc Cladding12mm Marine Grade Plywood30x50mm Timber BattensBreathable Membrane220mm PIR InsulationVapour Barrier150mm Reinforced Concrete

External WallStanding Seam Zinc Cladding12mm Marine Grade Plywood30x50mm Timber BattensBreathable Membrane220mm PIR InsulationVapour Barrier150mm Reinforced Concrete

HALL

HALL

Floor200mm reinforced concrete(polished)Vapour barrier200mm PIR Insulation

CROSS SECTION B

Floor200mm reinforced concrete(polished)Vapour barrier200mm PIR Insulation

Sun Path21st Jun

Sun Path21st Dec

Summer Wind 5.90 m/sWinter Wind <8.50 m/s

Park Views

Summer Wind 9.00 m/sWinter Wind 9.00 m/s

Traffic Noise

Neighbour

Neighbour

Site Access

FIRST FLOOR PLAN 1:100

SITE PLAN / 1:500

OCCUPANCY SCHEDULE

EXPLODED AXONOMETRIC CONCEPT DIAGRAM GROUND FLOOR PLAN 1:100

STREET VIEW

SOUTH ELEVATION 1:100

DETAIL SECTION 1:20 GARDEN VIEW

ENVIRONMENTAL CONCEPT SECTION 1:50

N

N

ANALYSISPROJECT DESCRIPTION

www.bartlett.ucl.ac.uk/iede @UCL_IEDE

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