Al Ain, UAE Dubai, UAE Madiant Zayad, UAE AFRICA Beau Bassin, Mauritis Cairo, Egypt
Rostock, Germany Stralsund, Germany Wiesbaden, Germany Cologne, Germany Athens, Greece Madrid,Spain Zurich, Switzerland Istanbul, Turkey Birmingham, UK Bishop’s Strotford, UK Croydon, UK Edinburgh, UK Exeter, UK Leamington Spa, UK Leeds, UK London, UK Luton, UK
ASIA Brahmanbaria, Bangladesh Dhaka, Bangladesh Dehradun, India Delhi, India Gandhingar, India Mumbai, India New Dehli, India
Certain gases (Water vapor, Methane, Nitrous Oxide, Chlorofluorocarbons, CO2) in the atmosphere block heat from escaping.
CO2 exists in the atmosphere naturally (minor component). However the CO2 concentration has been increased drastically and burning fossil fuels is a major contribution.
Carbon Intensity Fuels emit different amounts of carbon dioxide (CO2) in relation to the energy they produce when burned. Carbon intensity is used for comparing the environmental impacts of different fuels.
United States Average • In 2019, about 4,118 billion kilowatt-hours (kWh) of electricity were generated at utility-scale electricity generation facilities in the United States. • About 63% of this electricity generation was from fossil fuels (coal, natural gas, petroleum, and other gases). About 20% was from nuclear energy, and about 18% was from renewable energy sources California Average • In 2018, 195 billion kilowatt-hours (kWh) of electricity were generated at utility-scale electricity generation facilities in California and additional 90 billion kWh were imported from Northwest and Southwest. (Total 285 kWh) • About 38.4% of this electricity generation was from fossil fuels (coal, natural gas, petroleum, and other gases). About 9% was from nuclear energy, and about 42% was from renewable energy sources
Carbon Intensity • Carbon is released to atmosphere when electricity is generated. In U.S., this metric varies from 0.057 to 2.026 with the average value of 1 lb per kWh. • If the state has high carbon intensity electrical generation, “decarbonization” at building level can cause more harm to the environment. Water Consumption • Water is utilized for different processes during electrical generation. Water withdrawal and consumption factors vary greatly by the type of the fuel used. U.S. average is 2 gallons per kWh. • Water is required for energy generation and energy is required to extract, clean and deliver water. • If the state water consumption is high, “decarbonization” at building level can be problematic in draught zones.
ELECTRICITY – Consumption • Residential, commercial, and industrial customers each account for roughly one-third of the nation’s electricity use. 2019 usage rates are o Commercial – 36% o Residential – 38% o Industrial – 26% • Commercial and residential HVAC use accounts for 19% of total electricity consumption.
• Commercial and residential Lighting use accounts for 11% of total electricity consumption.
• Energy Use Intensity (EUI) is one of the main key metrics for benchmarking building energy use intensity. • EUI is calculated by dividing the total energy consumed by the building in one year by the gross floor area of the building. • CBECS EUI is a recommended benchmark metric for all buildings. • Benchmarking is now regulatory in some jurisdictions.
AlfaTech follows a holistic approach to meet project expectations in all dimensions. Providing sustainable design is an achievement if it is also applicable. Increasing efficiency is realistic when it is functionable. Meeting the project budget is possible when the design is constructible.
We take pride in our designs and ensure that the following principles are aligned in our approach to every project:
• Implementing sustainable solutions • Considering environmental impacts and reducing carbon footprint • Creating a comfortable and healthy environment for occupants • Optimizing building performance, reducing energy and water usage • Right use of right application with feasible operation sequences • Implementing storage systems and energy conversion measures for demand shifting
Expertise of Sustainability Studio team enables new ideas to achieve sustainable design strategies for each project. • Multidisciplinary team of experts evaluates projects with an integrated approach. • Working along with owners, architects and other stakeholders, every project is examined with a comprehensive, systematic approach to map key programming targets. • Project sustainability goals are established, and energy, water and air quality requirements are prioritized collaboratively. • Latest system technologies are explored, and concepts suitable to project application are determined. • Life cycle analysis, system simulations and models are utilized for validation. • Proposed system concepts are reviewed with project team to determine impacts and financial benefits in early design stage.
• We provide expert studies in all qualitative aspects of built environment • Advanced computer simulations to study wind patterns, thermal stratification and comfort issues • Building façade studies and energy modeling to aid architects/owners in key decisions during early stages of design
• Façade Engineering • CFD/Wind Studies • Thermal Stratification Studies • Energy Concept Studies • Energy Modeling • Daylighting Modeling
Technical Energy Saving Potential DOE - Energy Consumption Characteristics of Commercial Building HVAC Systems
Technical Energy Savings Potential (quads/year)
Technical energy savings potential is defined as the annual energy savings that would occur relative to “typical new” equipment. These technology options are characterized based on their technical energy-savings potential, development status, non-energy benefits, and other factors affecting end-user acceptance and the ability to compete with conventional HVAC technologies. (1 quad = 1 quadrillion BTU)
Technical Energy Saving Potential – Prioritization
• DOE developed a scorecard to assign a numerical score (final ranking) to each technology option.
• Five-point scale for each metric to evaluate the impact of each technology.
• Additional maturity score (development status) is applied to determine viable options but this score has no impacts on the final ranking.
Commercial HVAC primary energy consumption by end use and fuel type 2017
• Energy storage systems. • Renewable energy - incorporation of renewable energy such as photovoltaic systems in a practical application. • Optimize energy performance - lighting design featuring efficient LED fixtures throughout the spaces. • Controls applied for smart buildings applications to reduce waste in building systems operations. • Strategies in exterior lighting controls to reduce energy without compromising security and safety • Design of exterior light fixtures with proper photometric distribution and control to eliminate light trespass.
Energy Modeling & Lifecycle Cost (LCC) Analyses Strong background in project related conservation design: energy analysis, energy reports with payback analysis, lighting technologies, and use of variable frequency drives to control HVAC equipment and systems. • Day lighting systems • Interior Lighting systems • Energy efficient HVAC systems DAY LIGHTING SYSTEMS Sidelight Glazing Toplight Glazing Photocontrols for illuminance levels Photocontrol regulation of day lit area(s)
HVAC SYSTEMS High efficiency water-cooled chiller and cooling tower designs Use of high efficiency chillers with turbo core’s multiple magnetic bearing and oil free compressor for low load condition Use of hybrid heat-pump/heat- recovery chiller in place of pony chillers for low load condition Reduce reheat by means of exterior fan-coil unit with ECM motor and variable floor versus VAV with reheat
INTERIOR LIGHTING SYSTEMS LED Light Fixture Occupancy sensors Lumen maintenance controls Improved lighting design
Through whole building energy modeling analysis, provide recommendations for Net Zero strategies and to enhance core and shell MEP systems, including: • Eliminating gas-fire equipment (boilers and kitchen equipment) • Reducing reheat by means of perimeter highly efficient hybrid 2/4 pipe fan-coil system • Use water side economizer • Thermal storage
Whole Building Energy Modeling Case Study : three-story 90,000 SF office building with offices, kitchen, dining, and support spaces Performed whole building energy analysis by using IES-VE 2019, which offers dynamic thermal and energy calculations at a highly detailed level. • Study analyzes energy performance and compares annual energy use and energy cost with each of the HVAC system design scenarios specified in report.
• Includes analysis of PV systems estimating potential electricity generation and total parking lot area suitable to host PV systems for each HVAC system scenario.
BASE – Existing DX AC + Gas Boiler ALT 1a – New DX AC w Heat Recovery + Gas Boiler ALT 1b – New DX AC w Heat Recovery + Air Cooled Heat Pump ALT 2a – New Air-cooled Chiller + AC w Heat Recovery + Gas Boiler ALT 2b – New Air-cooled Chiller + AC w Heat Recovery + Air Cooled Heat Pump ALT 2c – New Air-cooled Chiller + AC w Heat Recovery+ Elec Reheat ALT 3 – New Heat Recovery Chiller + Air Cooled Heat Pump ALT 4 – Connected to Campus Central Plant
• 360,000 SF high-end museum in Los Angeles, California • MEP, technology and lighting design with sub- terrain parking and outdoor amenities • 1,340,000 SF total • Includes theaters, educational spaces, dining areas, event spaces, display and archive areas • Sustainable features include • Geothermal Loop
• Ecological ponds • EV chargers • Rainwater harvesting • Energy efficient HVAC system • Hydronic bidirectional heating/cooling flooring systems
• Solar energy system • Displacement system • LED lighting • Spectrally selective glazing • Grass and native plants
• Three-story, 250k SF headquarters in Fremont, California • Maximized natural ventilation/daylighting, reduced water/energy consumption with geothermal central plant, utilized radiant systems for primary conditioning. • Conducted extensive CFD modeling • Integrated building
• Two passively conditioned, interconnected atria • Shaded facade with automated natural ventilation • Chilled sails and occupant- controlled underfloor air- distribution systems • High-performance LED lighting with occupancy driven network-based lighting control • Graywater reuse and rainwater catchment systems
automation, controls and management platforms • Full air-side and water-side economizing • Fuel cells redundantly powering building network operations • Solar domestic hot water system • PV-ready electrical system
• 1M SF, ultra high-performance new ground- up HQ in Mission Bay, San Francisco • MEP engineering technology, security, sustainability and high-performance lighting design services • Assisted architectural team optimizing performance in utility, façade, wind studies • Façade responds to programmatic needs, under floor air distribution system • Winter Garden social space with natural ventilation, geothermal • Rainwater retention and daylighting
• Natural ventilation • Radiant chilled ceilings • Radiant slab heating / cooling • Underfloor air distribution system • LED lighting • Spectrally selective glazing • Fuel cells
• EV chargers • Photovoltaic • Magnetic bearing chillers
• Gray water reuse/rainwater harvesting • Elevator power regeneration systems • Full air-side and water-side economizing • Natural ventilation & operable windows • Smart Building: Integrated building automation, control & management platform