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Mixed-Use Office Mission Bay, San Francisco N

12.05.2013

Prof. Christoph Reinhart

Aiko Nakano | Thomas Sherman


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY CONCEPTS

Our Philosophy

Site Weather

Thermal Envelope

EUI

Precedents

Heating DD Cooling DD

Daylighting

Fuel Breakdown: Typical Summer Week Typical Winter Week

Site: Planned Masterplanning Form Finding Plans Sections

Psychrometric Chart

Solar Gain and Glare Control Natural Ventilation Solar Hot Water

FUTURE Office Space of the Future

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

DESIGN CONCEPTS

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

OUR DESIGN PHILOSOPHY Precedents: 2 Level Cross Laminated Timber (CLT) office in Quebec, Canada

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

OUR DESIGN PHILOSOPHY Precedents: Cross Laminated Timber (CLT) construction - Floor slabs and columns are built up out of multiple layers of quick growing softwoods.

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

Local Energy Mix and Energy Targets Understanding regional energy supply using EPA Power Profiler

EPA Energy target: 159.8 kW/m2 - year (office with 50 people and 52 computers, not heated or air conditioned)

Reduce energy use through passive strategies: Daylighting Controls and Shading Controls Solar Hot Water Heater Natural Ventilation

DISCUSSION


SITE: MISSION BAY

N


DESIGN CONCEPTS SITE: MISSION BAY Existing Masterplanning

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS SITE: MISSION BAY Existing Masterplanning

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

SITE: MISSION BAY Early Stage Rhino massing model

N

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

SHADING STUDY June Morning

June Afternoon

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

EARLY RHINO MASSING MODEL Rhino massing model, Office program above Retail / Cafe on ground level

IF CE OF CE I F OF N

R

IA L ET

/C

E F A

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

PERSPECTIVE VIEW FROM THE SOUTH

N

BIOCLIMATIC DESIGN

ENERGY

FUTUREFUTURE DISCUSSION DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

PERSPECTIVE VIEW OF THE OUTSIDE

N

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

Form Finding Process through EUI Evaluation

Model # 13 13 13 14 14

Case Base Base Base Change windows Change windows

Construction WoodSolid WoodSolid WoodSolid WoodSolid WoodSolid

Internal Gain EUI 8 4 4 4

Notes 72.8 57.6 51.5 51.2 51.35

changed internal gain Took out domestic hot water changed to 80% glazing Natural ventilation on 

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

ENERGY

BIOCLIMATIC DESIGN

FUTURE

DISCUSSION

PLAN ROOF

SOLAR HOT WATER PANELS

SOLAR CHIMNEY

SOLAR CHIMNEY

N

LEVEL 3 750 m2 NET

KITCHEN

LEVEL 1 750 m2 NET 5.47

WORK STATIONS

TOILETS

MECH 2.40

ENTRY

DISPLAY MECH

ENTRY

TOILETS

FUTURE OFFICE SPACE

CONF.

RECEPTION

N

2.55

2.25

N

2.75

TERRACE

47.50

KITCHEN

5.55

9.00

CONF. WORK STATIONS

ENTRY

ENTRY

LEVEL 2 750 m2 NET

TOILETS DISPLAY MECH

ENTRY

RECEPTION

CAFE / RETAIL SPACE

14.50

1.00

1.50

6.25

35.00

6.25

N


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION

PLAN

KITCHEN

LEVEL 1 750 m2 NET 5.47

CONF. WORK STATIONS

TOILETS DISPLAY MECH

ENTRY

RECEPTION

2.40

2.55

2.25

2.75

TERRACE

N


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

SECTION

16.50

4.80

0.45

0.60

4.00

OFFICE

2.40

0.60

4.00

OFFICE

4.00

OFFICE

5.00

3.70

CAFE / RETAIL

FOUNDATION

DISCUSSION


DESIGN CONCEPTS SOUTH ELEVATION

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS WEST ELEVATION

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

INSIDE VIEW FACING NORTHWEST

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS INSIDE VIEW FACING EAST

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

MICROCLIMATE

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS Climate in Mission Bay

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS Solar Sun Path - Annual

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

Solar Sun Paths

June Solstice

Winter Solstice

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

BIOCLIMATIC DESIGN

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

Thermal Envelope: No Thermal Mass

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION

Thermal Envelope

30mm Oregon Redwood

3mm EPDM Rubber

20mm Tyvek with Airgap

100mm Wood Panel Insulation

220mm Wood Panel

200mm Wood Panel

25cm

200mm Pine Wood

32cm

30cm

25cm

200mm Pine Wood

100mm Wood Panel Insuation

Wall Assembly

Roof Assembly

Underside of the Office

Floor Slabs

R = 2.4 Km2/W California R = 2.3 - 2.6 Km2/W

R = 4.1 Km2/W California R = 3.9 - 6.7 Km2/W

R = 4.4 Km2/W California R= 4.4 Km2/W

R = 1.9 Km2/W

Recommended R values from simplyinsulate.com/savings for zone 3 (California)


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

Daylighting Daylight Autonomy, Usable Daylighting Illuminance and Glare Analysis Daylighting Factor

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS Daylighting Radiation Map

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION

Desk Illuminance

57 W/m2

44 W/m2 76 W/m2 53 W/m2

59 W/m2

62 W/m2 56 W/m2

55 W/m2 44 W/m2

46 W/m2

53 W/m2 54 W/m2

Summer (Northwest)

Summer (Southeast)

41 W/m2

45 W/m2

40 W/m2 32 W/m2

52 W/m2

37 W/m2

53 W/m2

38 W/m2

39 W/m2

45 W/m2 57 W/m2

63 W/m2

Winter (Northwest)

28 W/m2

Winter (Southeast)


DESIGN CONCEPTS Natural Ventilation Wind rose

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

Natural Ventilation Acceptable Operative Temperatue Ranges for Naturally Conditioned Space 19 - 26 degrees C

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

Natural Ventilation Summer Indoor Temperatures

Summer Typical Week

Summer Design Week

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION

Natural Ventilation Stack effect - Solar Chimney Placement

Heat absorbing top Operable window

706 W/m2 1115 W/m2

1121 W/m2

588 W/m2 697 W/m2

1132 W/m2

May - October Solar chimney at optimized angle and location

November - April


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION

Natural Ventilation Cross ventilation: Buoyancy and wind-driven

16.50

4.80

0.45

0.60

4.00

OFFICE

2.40

0.60

4.00

OFFICE

4.00

OFFICE

5.00

3.70

CAFE / RETAIL

FOUNDATION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION

Solar Hot Water 7 solar hot water provides hot water for the entire building (100 occupants) It replaces domestic hot water and utilizes the water from the bay 2 more solar hot water is used for radiant floor heating and reduces heating load Assumptions July Average daily solar radiation (kWh/m2‐day)

                       7.19

Solar Hot Water Specifications Solar Hot Water System Efficiency (%, delta_T=36.5C) Solar Hot Water Storage and Transmission Loss Solar Hot Water Collector Area (m2) Specific Heat_Water (J/kgK) Density_Water (kg/m3) Average River Water Temperature (degrees C)

                       0.60 20%                               4                       4,184                       1,000                         13.1

Water Usage Hot_Water_Temperature (degrees C) Water_Volume (l/day‐person) Water_Volume Required for Radiant Heating (L) m3/L #People_Our_Office #People_Other_Programs

                          50                            22 NA                       0.001                            50                            50

Sizing Calculations TM =Volume x SVH x p (kJ/K) Q=TM x delta_T (kWh)

                     9,205                       94.38

Collector_Area = Q/(Solar_Radiationx System Efficiency) Number of Hot Water Collectors

                          27                         6.21

Apricus AP-30 Solar Collector

223 W/m2

July 1-30 Solar Radiation


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

Design Builder Model

Assumptions Infiltration: Lighting Control: Glazing: Natural Ventilation Setback T:

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

EUI and Fuel Breakdown EUI of 53.0 Wh/m2 33% Reduction from EPA Target (Energy Star Score 75)

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

EUI and Fuel Breakdown EUI of 53.0 Wh/m2 33% Reduction from EPA Target (Energy Star Score 75)

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS Energy Balance

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS Typical Summer Week

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS Typical Winter Week

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

FUTURE

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

Office of the Future

Internal Load Current Computers Servers Printers New Internal Load

W/m2 8.00 (1.00) (2.00) (0.33) 4.67

Significant decrease on internal load Increased heating needs Decreased cooling needs

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

DISCUSSION

ENERGY

FUTURE

DISCUSSION


DESIGN CONCEPTS

MICROCLIMATE

BIOCLIMATIC DESIGN

ENERGY

Reflecting on our Design Process We’ve successfully incorporated energy and bioclimatic design early on in the design process Designing for visual comfort and glare sacrificed energy performance for lighting and cooling needs

FUTURE

DISCUSSION

Profile for Aiko Nakano

Mission Bay Mixed-Use Office Sustainable Design  

MIT 4.401 Sustainable Architectural Building Systems In collaboration with Tom Sherman [GSD]

Mission Bay Mixed-Use Office Sustainable Design  

MIT 4.401 Sustainable Architectural Building Systems In collaboration with Tom Sherman [GSD]

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