SEJAL
SANJAY
SHANBHAG
sejalsanjayshanbhag@gmail.com +91-8904045916 http://www.linkedin.com/in/sejal-sanjay-shanbhag
“I am an accomplished, results-oriented Architect and energy analyst, with more than 3 years of experience, motivated to contribute to the success and long-term growth of the company by capitalizing on my design experience and applying my expertise in the various areas of architecture to ensure the timely accomplishment of all identified goals“.
EDUCATION Centre for Environmental Planning and Technology
Ahmedabad, India
Master in Building Energy Performance (Aug 2019‐ May 2021) • • • •
Building physics, passive comfort. Heating, Ventilation and Air‐ conditioning Lighting, Daylighting and Integrated building design Thesis: Evaluating the effect of ceiling diffusers on airflow patterns in an office space to achieve effective air distribution
M. S. Ramaiah Institute of Technology
Bangalore, India
Bachelor of Architecture (Aug 2013‐ June 2018) • •
Design and improve integrated systems of people, materials, information, facilities and technology. Function as a member of a multi‐disciplinary team.
PROFESSIONAL EXPERIENCE • Pragya, Solar Decathlon India
Ahmedabad, India
Architect / Financial Analyst / Lighting designer (Jun 2020‐ May 2021)
• Meraki, Architecture At Zero 2020 California, USA Architect and Energy Analyst (Dec 2019‐ Jun 2020)
• Freelance
Coorg & Mangalore, India
Architect (Feb 2019‐ Nov 2019)
• Mendonca Associates Mangalore, India Junior Architect (June 2018‐ Jan 2019)
• Talati and Panthaky Associated Designers LLP Mumbai, India Architect Intern (Aug 2017‐ May 2018)
ACHIEVEMENTS • Student Merit Award at ‘Architecture at Zero 2020’, a zero net energy design competition that engaging in pursuit of Net Zero Building Design. • Solar Decathlon India 2020‐2021, Runner‐up, team KILLBILL 4.0, office building division. • Comfort At The Extremes 2021 – Abstract accepted.
SKILLS Architecture
Energy Simulation
AutoCAD, REVIT, Sketchup, I‐Render, V‐ray
DesignBuilder, IES‐VE, Open studio, EnergyPlus
Presentation
Lighting
Photoshop, In‐design, Premiere Pro
Microsoft
CFD Ansys Fluent, Ansys workbench
Suite,
Light Stanza, Dialux Evo
Climate analysis Rhino, Grasshopper, Ladybug, Honeybee, Climate Consultant, Climate Studio
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Selected Projects
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Meraki
Net-zero energy Competition: Architecture at Zero 2020 | First Student Merit Award Type: Community Library Site: San Benito county, California, USA
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Climate Analysis
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Concept The proposal for San Benito County Free Library is an expression of barrier-free knowledge & education which should be accessible to all. Designed on the values of accessibility and porosity, the idea is to create an urban landmark that is welcoming to all and reflects the values of the people, blends with the existing, and yet gives an identity to the city of Hollister. Thus, the concept of ‘urban armature’ welcomes pedestrian movement through the site and aims to transform the static, mundane act of movement into more interactive and user-friendly ways. Hence, as a response to environmental parameters, space program, context, social, people, etc. the built form shapes up into a bold and orthogonal structure that manifests the values like self-reliance carving out community spaces that enhance the participation of society, promotes education and lifelong learning.
N-S Longer Axis
Urban Armature
Chamfering of the West wall
Elliptical Cut-out
Inclination for Solar control
Solar PV screen facade
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Zoning
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First Floor
Second Floor
Third Floor
Fourth Floor
Design Features Solar shading angles for Facade
Overshadow: Summer 85% Semi-open area shaded
Overshadow: Winter 40% Semi-open area receives sunlight
Annual Solar Irradiation analysis Shading angle derivation •
Solar control for hours when DBT>25oC & Global horizontal radiation >315kWh/m2
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North: HSA 70˚
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East : HSA 30˚
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South: HSA 60˚
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West: HSA 20˚
Massing Morphology & PV screen mutually shades the South & South-West facades. Daylight analysis
Daylighting Extents 96% of the area has illumination >300 lux for >75% of hours achieved on the work plane.
SDA 300,75% : 96%
Bifacial Photovoltaic Array Glass atrium with diagrid system which enables daylight, enhance natural ventilation and visually connects the interior spaces. Secondary diagrid structure
Primary diagrid column structure Building form responsive to Climate of San Benito County Primary diagrid column structure Secondary diagrid structure Translucent PV
Energy generation is increased by 15% with the use of bifacial panels (244,045 kWh) on the roof and 39.5% with the use of solar tracking from fixed panels (101,150 kWh) on the south façade, generating a total of 345,195 kWh. 15
Design Details
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PRAGYA
Net-zero energy-water Competition: Solar Decathlon India 2020-2021 | Runner-up Type: Office building Site: Gandhinagar, India Team: KillBill 4.0
Climate Analysis
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Design Challenge
Business as usual 125 kWh/m2-yr
Envelope Optimization 95 kWh/m2-yr
Proposed design 45 kWh/m2-yr
Proposed System 45 kWh/m2-yr
The building requires 4 roofs to meet the energy generation
The building requires 3 roofs to meet the energy generation
The building requires 1.5 roofs to meet the energy generation
The building designed to accommodate the 0.5 roof area equivalent through Solar façade PV
Concept The core principle guiding our design decisions was to minimize the energy use of the building and maximize the possibilities for energy generation while providing the occupants with a comfortable and aesthetically pleasing built environment. Our building aims to redefine the usual glass boxes we have come to associate as office buildings, with our distinct efforts targeted at creating a contextual façade which performs well on aesthetics, occupant views, energy, as well as thermal aspects of the building.
Maximizing the Built-up Area
Zoning Office and Retail Area
Exposing Lobby for Mixed Mode Operation
Incline West façade to enhance PV Potential
Increasing balcony area in recreational floor
Incline West façade to enhance PV Potential
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Integrated building design Lobby zoned to periphery to allow Natural Ventilation
Water Autonomy: 45% Achieved
Solar PV system to meet 100% building energy requirement
Centralized STP for sewage water treatment
Radiant Cooling with chilled water from District Cooling System
Underground Chutes to waste management facility
Useful Daylight Illuminance: 72% (inclusive of interior furniture)
100% comfort hrs. met through Mixed Mode and Personal Comfort System
Integration of Building Elements 29
Living Wall Thermal Comfort
Biophilia
Reduction of Zone Mean Air Temperature by 2°C
Encourages connection between humans and nature
Noise Absorption
Productivity
Decrease in proximal noise levels
Increase in productivity levels
Air Quality
Minimum water
Reduction of 1‐2% Air pollutants
a multitude of native species that thrive well in the hot and dry climate of Gandhinagar
Euphorbia Tithymaloides
Eranthemum
Ophiopogon Japonicus
Living wall installed on the North and West wall 31
Shading analysis
With the simulation results of the preliminary design, iterations are done to optimize the result and shading devices are proposed. The shading devices are devised from sun path analysis and shading masks.
Optimized the shading device to minimize Annual Sunlight Exposure 33
Daylight analysis
Visual Comfort
Typical Part Section: South, East Façade
Part Section B : East Façade
Part Section C : West Façade
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Parametric Envelope optimization
Energy Performance
Proposed Envelope Parameters
Wall U‐Value 0.40 W/m2K
Roof U‐Value 0.33 W/m2K
Window U‐Value 3.0 W/m2K | SHGC: 0.27
System used for the Iterations LPD ECBC Compliant VAV: Central Cooling Plant + Variable Vol. AHU Control: Stepped
as defined for ECBC Standard Design
HVAC Zoning
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Financial management
Total project cost comparison
In projects like these the issue of split incentives can be challenging, wherein the developer invests while the tenants’ benefit. The solutions require a nominal incremental cost towards energy-efficient solutions and reap long-term benefits to all. Life cycle cost analysis for a period of 25 years, for base case, compared to proposed case incurred incremental cost of 4.2 Cr towards energy conservation measures, to improve the occupant comfort and reduce energy consumption where the life cycle cost decreased by 6%.
Incremental costs to stakeholders
Life Cycle Cost analysis
Renewable energy
Build Own Operate and Transfer (BOOT) model
Renewable energy cost evaluation 39
Evaluating the effect of ceiling diffusers on airflow patterns in an office space to achieve effective air distribution Ceiling diffusers have a significant impact on indoor air temperature and air velocity. This study focuses on the predominant air distribution systems of mixing ventilation used in office spaces in India, with mainly three types of ceiling diffusers, i.e., square, round, and vortex. This study aims to understand the impact of the ceiling diffuser designs, their relative location to occupants on the airflow patterns, and the quick removal of airborne contaminants. The fluid flows are analyzed by computational fluid dynamics (CFD), which uses numerical analyses and structured data using the finite volume method to solve the room's air distribution. The present study considers a tracer gas as internally, occupant generated pollutants. Multi-objective optimization is performed for all the parametric combinations using modeFRONTIER, which uses a machine-learning methodology to mimic the CFD solver and reduce the computational time. The workflow tests with various optimization algorithms and produces local and global optimum results. The assessment of air distribution due to the diffuser type and its location is carried out by evaluating air distribution performance index (ADPI), air change effectiveness (ACE), and ventilation effectiveness (VE), gaining insights into desired airflow patterns and control method for occupant generated contaminants. The outcome of this study will suggest an optimum diffuser design and its location for the office space. This research study will further help identify retrofitting measures that can be energy-efficient and propagate a measure for maintaining healthy office spaces and can also be involved as a design intervention at HVAC system design stages.
Background People spend 90% of their daily life in built environment. (U.S. EPA 1989)
Airflow patterns significantly impact pathogen transport
Pollutant's dissemination, source as occupants.
Increasing the outdoor ventilation to maintain indoor air quality (ASHRAE)
Transmission of contaminants through Air distribution within spaces.
Increased fresh air percentage is an addition to the load on the systems
Research Objectives To study the air dispersion and distribution in the room through different ceiling diffusers Study the effectiveness of air distribution system in supplying air to the room Study the effectiveness of the air distribution system in removing the pollutants generated internally within the space Satisfy effective draft temperatures in the zone as per ASHRAE 55. Identifying the turbulence model suitable for indoor airflow Validation carried out for Standard, RNG and Realizable k-ε turbulence model
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Research Methodology
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Results and Conclusion
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sejalsanjayshanbhag@gmail.com