Architecture And Environmental Design Portfolio Srushti Pawade
Evidence Based Environmental Architecture
Ravensborn House, Church Street, London -
A retrofit Approach
This project assessed the performance of an existing building and its surroundings, aiming to identify climate-positive solutions. Focusing on the southeast block in London’s Church Street area, it addressed:
• Correlated climatic, microclimatic, and contextual factors with design strategies.
• Conducted fieldwork, collected, and interpreted environmental data.
• Used manual and computational methods to evaluate building performance.
• Formulated research questions and conclusions based on environmental analysis and user feedback.
EXERCISE
CHILDREN
NEIGHBOURHOOD
MISCELLANEOUS
Design Approach Stages: Planning and Concept Evolution
CLIMATE ANALYSIS -
SITE AND URBAN CONTEXT STUDIESANALYSIS OF EXISTING BUILDINGOUTDOOR AND INDOOR STUDIESEVALUATION OF BUILDING -
IDENTIFICATION OF ISSUES OF ARCHITECTURAL AND ENVIRONMENTAL DESIGN -
Accessibility
Natural ventilation and Daylight Long Narrow corridors
Unused Courtyard
Lack of Proper Communal Space PROPOSITION OF STRATEGIES
REFURBISHMENT AND EXTENSIONCONCEPT -
PRECEDENTSMASSING DESIGN
PERFORMANCE ANALYSIS
DATA INTERPRETATION
FINAL OUTCOME THROUGH COMPARISON
Existing Floor Plans
Proposed Floor Plans
Bioclimatic Section
Proposed Building
Comparison of thermal comfort Between Existing and Proposed Plans with Material Modifications (Edsl TAS)
Insulation material for floor and wall
Existing Material
Brick - U value -0.938 W/sqm. K
R Value - 0.896 sqm.K/W
Thermal Capacitance kJ/K/sqm - 227.637
Layers -
Brick Fired Clay 1920 Kg/m3 (0.15m)
Gypsum Plaster Lightweight Aggregate - 13mm (0.13m)
Proposal Material
URSA WALLTEC BLACK Specifications
Thermal conductivity coefficient - 0.032 W/sqm. K
Non-combustible (A1) material
Water vapour resistivity - 5MNs/gm
Water absorption with brief immersion(WS) < 1 kg/sq.mWater absorption witprolonged immersion(WL) < 3 kg/sq. m
Acoustic characteristic - > 10 kPa. s/sq. m
Thickness ranges from - 100mm to 220 mm
Larger slab size means 12.5% fewer boards to install and 12.5% fewer fixings required.
Dimensionally stable and water – repellent glass wool slabs, faced on one side with a black weather resistant glass fleece. Suitable as thermaland acoustic insulation for facades with open joints. Thanks to the black fleece, the slabs cannot be seen behind open jointed cladding panels.
A typical 150mm concrete slab will give approximately 50 dB Rw; this can be improved to over 65 dB Rw with URSAPAN WALLTEC BLACK slabs and 2 layers of plasterboard as the suspended ceiling finish.
SOURCE - https://www.ursa-uk.co.uk/products/ursapan
URSAPAN FLOOR DETAILS ? WALL DETAILS
Proposed Material Existing Building Envelope Ravensbourne Building SE Block
Comparison
Temprature variable of all zones in mid January at 12pm of proposed SF and July at 12pm of proposed SF
Pollution Levels
and Thermal Comfort - Existing and Proposed Buildings with Vegetation and Building Element
Connecting the inside of the courtyard to library which can oth-
Transforming the basketball court into a semi -open
Providing access to Southwest facing
There’s decrease in CO2 polution in proposed building surrounding with vegetation after planting vegetation in courtyard when compared to the existing building surrounding.
In reflected radiation in the courtyard area after proposing vegetation there is a change in reflected SW radiation it reduced to blue from green that is from 243 w/m3 to 197 w/m3.
Figure 1 - Relative Humidity Proposed Building
Figure 2 - Relative Humidity Existing Building
Figure
Figure
THESIS PROJECT - Displacement Ventilation For Energy efficiency in Museums and Galleries
Aim of this study is to increase the museum galleries’ energy efficiency while safeguarding the ideal indoor climatic conditions for the preservation of artefacts and creating a comfortable environment for visitors.
This study explores how displacement ventilation can improve energy efficiency in museum galleries. Museums need a stable environment to protect their valuable collections, and HVAC systems are crucial for maintaining air quality. The evaluation of the literature focuses on the drawbacks of conventional ventilation techniques and the potential benefits of displacement ventilation to boost energy efficiency.
A London museum gallery case study analyzed both mixed and displacement ventilation systems. CFD analysis provided valuable insights into their effectiveness in air distribution and thermal comfort.
• Covered indoor climate management, energy efficiency, and displacement ventilation in museum galleries.
• Measured air dispersion, temperature, and humidity in the museum gallery to assess current ventilation performance.
• Modeled airflow and thermal performance of both mixed and displacement ventilation systems, identifying flaws in the current system.
• Evaluated thermal efficiency, including heat transfer coefficients and thermal resistance, for both systems.
• Adjusted diffuser placement, supply air temperature, and velocity to enhance energy efficiency and indoor climate control.
• Compared simulation results with measured data to confirm the accuracy and effectiveness of the displacement ventilation system.
Graph representing the energy consumption in UK museums between April 2020 and March 2021. The graph shows 24.55 million kWh of gas consumption and 22.93 million kWh of electricity consumption, reflecting the significant energy use in the museum sector during that period.
ASHRAE recommends a stable indoor temperature range of 20°C to 24°C for galleries. Similar to CIBSE, it emphasizes temperature stability to prevent thermal damage to museum collections, with variations ideally limited to ±1°C.
Inspiration source: Modelling Approaches for Displacement Ventilation
Displacement Ventilation
Case 1a
heat generation rate - 75W per occupant
inlet temperature - 18 degrees Celsius
outlet temperature - 24 degrees Celsius
velocity - 0 m/s
volume flow rate - 858 cubic meters per hour
outlet pressure - 0 Pa
human temperature - 27 degrees Celsius
domain temperature - 20 degrees Celsius
Temperature distribution under displacement ventilation scenario with velocity vectors and flow rate of 858 cubic meters per hour
Mixed Ventilation
Case 1b
heat generation rate - 75W per human occupant
inlet temperature - 18 degrees Celsius
initial velocity - 0.2 m/s
volume flow rate - 957 cubic meters per hour
human temperature - 27 degrees Celsius
domain temperature - 20 degrees Celsius
Temperature distribution under mixed ventilation scenario with velocity vectors and flow rate of 957 cubic meters per hour
Elevation
Elevation
Scenario in which occupancy load is increased which resulted into increase in air flow rate: Case 2
Occupants – 16
Set point - 22°C
Floor Area – 386.4 m2
Volume – 1560 m3
occupants, desk lamps and equipment qos – 1300 W
overhead lighting ql – 9660 W
Air flow rate to meet the cooling load - 1769.62 Lis
heat conduction through the room envelope and transmited solar radiation qen - 600 W
Total cooling load qT - 11560W
Fresh airflow rate is 157.4 Lis
Supply air volume is 1596.6 Lis
Temperature distribution under displacement ventilation flow rate - 957 cubic meters per hour
Temperature distribution under displacement ventilation elevation.
Scenario in which occupancy load is decreased which resulted into decrease in air flow rate: Case 3
Occupants – 4
Set point - 22°C
Floor Area – 386.4 m2
Volume – 1560 m3
occupants, desk lamps and equipment qos – 300 W
overhead lighting ql – 9660 W
heat conduction through the room envelope and transmited
solar radiation qen - 600 W
Total cooling load qT = 10560W
Air flow rate to meet the cooling load is 3786 Lis
Fresh airflow rate is 111.8 Lis Supply air volume is 1458.5 Lis
Temperature distribution under displacement ventilation flow rate - 957 cubic meters per hour. Temperature distribution under displacement ventilation elevation.
TPLP analysis measures energy consumption, enhancing our understanding of energy efficiency in museum galleries. By comparing mixed and displacement ventilation systems, the study provides guidance to improve ventilation design and operation. The findings help develop guidelines for designing displacement ventilation systems that boost energy efficiency and maintain air quality in museum galleries.
Data Sources:
TBD inputs based on NCM standards
London weather data for different day types
Internal conditions from an established database
Thermostat Conditions:
Upper temperature limit: 150°C
Lower temperature limit: -50°C
Humidity control: 0% to 100%
Building Envelope Characteristics:
Exterior wall U-value: 0.12 W/sq m°C
Internal floor U-value: 1.39 W/sq m°C
Aluminium duct framing U-value: 2.7 W/sq m°C
The investigation highlights how important it is to choose the right ventilation strategy for achieving indoor thermal comfort. By adjusting airflow rates and designing diffuser layouts thoughtfully, we can improve the efficiency of ventilation systems in different environments. This approach helps maintain comfortable temperatures while also reducing energy use and costs. Further research on how occupancy levels, airflow rates, and diffuser designs interact can provide useful insights for better ventilation system design and management. This ultimately benefits both occupant comfort and energy conservation.
Annual Energy consumption in displacement ventilation case
Energy consumption in mixed ventilation case