This document discusses ventilation requirements and options for dwellings under new Irish building regulations. It outlines the three main ventilation systems allowed: mechanical extract ventilation (MEV), mechanical ventilation with heat recovery (MVHR), and natural ventilation (NV). It notes challenges with NV including inconsistent airflow and studies showing it often under-ventilates. The document compares decentralized and centralized MEV and MVHR systems in terms of costs, noise levels, maintenance needs, and impacts on usable space. It also discusses using wireless sensor networks to monitor indoor air quality parameters like temperature, humidity, and carbon dioxide levels.
This document discusses the requirements for Near Zero Energy Commercial Buildings (NZEB). It outlines that NZEB buildings must have a high performance thermal envelope to limit heat loss and solar heat gains, requiring stringent insulation standards. Buildings must also utilize high energy efficient systems for heating, ventilation, air conditioning, lighting and renewables to meet energy targets. The standards apply to new buildings and major renovations starting in 2019, with some transitional arrangements allowing use of older standards if planning or substantial construction was completed by set deadlines.
This document outlines the methodology for calculating Ireland's primary energy factor and renewable energy ratio in accordance with ISO 52000. It describes how the primary energy and renewable energy are calculated for different renewable technologies like PV, solar, wind, heat pumps, biomass, and CHP plants using specific equations that take into account the generated energy and primary energy factors. The renewable energy ratio is the primary energy from renewables divided by the total primary energy.
Energy Simulation of High-Rise Residential Buildings: Lessons LearnedRDH Building Science
This presentation covers lessons learned from an energy study of over 60 architecturally representative mid to high rise multi-unit residential buildings (MURBS) in BC.
This document summarizes a study that used thermal modeling of livestock housing for broilers to optimize equipment and control parameters. The modeling examined how carbon dioxide (CO2) concentrations are affected by factors like weather, farmer-controlled settings on ventilation minimums and temperature setpoints, and structural elements of housing insulation and heating type. Increasing the ventilation minimum flow rate was found to lower CO2 levels, but with economic and environmental impacts. Indirect combustion heating and improved insulation had greater effects on CO2 than settings alone. The conclusions suggest optimizing short-term settings and making medium-term investments to housing and equipment to better manage CO2 levels, especially in cold weather.
Developing an Open Source Hourly Building Energy Modelling Software ToolRDH Building Science
Energy modelling is an important tool in the design of low energy buildings. It helps evaluate energy savings of various energy efficiency measures and can predict total building energy consumption.
This document discusses ventilation requirements and options for dwellings under new Irish building regulations. It outlines the three main ventilation systems allowed: mechanical extract ventilation (MEV), mechanical ventilation with heat recovery (MVHR), and natural ventilation (NV). It notes challenges with NV including inconsistent airflow and studies showing it often under-ventilates. The document compares decentralized and centralized MEV and MVHR systems in terms of costs, noise levels, maintenance needs, and impacts on usable space. It also discusses using wireless sensor networks to monitor indoor air quality parameters like temperature, humidity, and carbon dioxide levels.
This document discusses the requirements for Near Zero Energy Commercial Buildings (NZEB). It outlines that NZEB buildings must have a high performance thermal envelope to limit heat loss and solar heat gains, requiring stringent insulation standards. Buildings must also utilize high energy efficient systems for heating, ventilation, air conditioning, lighting and renewables to meet energy targets. The standards apply to new buildings and major renovations starting in 2019, with some transitional arrangements allowing use of older standards if planning or substantial construction was completed by set deadlines.
This document outlines the methodology for calculating Ireland's primary energy factor and renewable energy ratio in accordance with ISO 52000. It describes how the primary energy and renewable energy are calculated for different renewable technologies like PV, solar, wind, heat pumps, biomass, and CHP plants using specific equations that take into account the generated energy and primary energy factors. The renewable energy ratio is the primary energy from renewables divided by the total primary energy.
Energy Simulation of High-Rise Residential Buildings: Lessons LearnedRDH Building Science
This presentation covers lessons learned from an energy study of over 60 architecturally representative mid to high rise multi-unit residential buildings (MURBS) in BC.
This document summarizes a study that used thermal modeling of livestock housing for broilers to optimize equipment and control parameters. The modeling examined how carbon dioxide (CO2) concentrations are affected by factors like weather, farmer-controlled settings on ventilation minimums and temperature setpoints, and structural elements of housing insulation and heating type. Increasing the ventilation minimum flow rate was found to lower CO2 levels, but with economic and environmental impacts. Indirect combustion heating and improved insulation had greater effects on CO2 than settings alone. The conclusions suggest optimizing short-term settings and making medium-term investments to housing and equipment to better manage CO2 levels, especially in cold weather.
Developing an Open Source Hourly Building Energy Modelling Software ToolRDH Building Science
Energy modelling is an important tool in the design of low energy buildings. It helps evaluate energy savings of various energy efficiency measures and can predict total building energy consumption.
This document summarizes the proposed deep energy retrofit for a block of flats in Dublin to improve energy efficiency. The initial proposal focused on fabric upgrades and individual gas boilers, achieving a BER of A3. Further proposals introduced a central heating system, MVHR, reduced thermal bridging, and biomass boilers, lowering the predicted energy usage and achieving the target BER of A2. Key results included a space heating demand of near zero in some units and average CO2 emissions of 602kg/y reduced to 228kg/y.
Energy Efficiency Methods And Techniques V.2patmcmmc
This document discusses various energy efficiency methods and techniques that can help lower energy bills, improve home comfort, and reduce environmental impact. It describes how improving insulation, installing efficient heating systems and controls, reducing air leakage, and adopting energy efficient behaviors can significantly cut household energy usage. Specific techniques covered include attic insulation, draught-proofing, efficient lighting and appliances, low-flow fixtures, and proper heating system maintenance. The goal is to use energy more efficiently and eliminate waste to save money while keeping homes warm and healthy.
Timber frame construction can be used to build low or zero carbon housing by achieving high levels of insulation and airtightness. Passive houses require air infiltration rates below 0.03 air changes per hour and use heat recovery ventilation systems. Using increased insulation, achieving air tightness of less than 0.1 air changes per hour, and integrating solar technology and heat recovery ventilation can allow timber frame homes to meet future regulations requiring homes that use 62 kWh/m2 or less per year. Proper workmanship will be important to ensure high performance.
Energyes division ener termopac line 2015 ev v02Christian Moreau
This document discusses EnerTermoPac (ETP), a multi-energy hybrid system that can provide heating, cooling, hot water, and electricity using various energy sources. ETP aims to reduce natural gas consumption compared to traditional boilers. It claims a 40% reduction in gas usage versus traditional boilers and consumes half as much gas as cogeneration systems for equivalent thermal energy production. The document outlines ETP product lines for industrial, commercial, and residential applications with engine sizes from 2 to 71 liters providing 50kW to 1200kWe. It also describes ETP control and interface features and provides an example of a system combining ETP modules with heat pumps, energy storage, photovoltaics, and other technologies
Health Business Services, HSE NZEB approach by Brendan ReddingtonSustainableEnergyAut
This document discusses requirements for nearly zero-energy buildings (NZEB) for public authorities in Ireland. New buildings owned and occupied by public authorities must be NZEB after December 31st 2018, and all new buildings will be required to be NZEB after December 2020. The purpose of the seminar is to launch the NZEB specification for public authorities. Major renovations will also need to meet energy efficiency requirements. The document outlines challenges in meeting these new standards for healthcare buildings, including infection control, glazing ratios, air tightness, renewables, and coordinating with CHP systems.
Energy Consumption in Mid to High-rise Residential Buildings both Before and ...RDH Building Science
This document analyzes energy consumption data from six mid- to high-rise residential buildings before and after enclosure rehabilitation. It found that while enclosure retrofits improved building enclosures, they did not necessarily reduce total energy use, as service systems had a greater influence on energy consumption. On average, the buildings saw a 4.8% reduction in total energy use after rehabilitation, but results varied, with savings of up to 16.8% in one building and increased usage of 13.8% in another. The study concluded that energy improvements require coordinated efforts between enclosure and service system engineers.
Energy efficient buildings (EEB) aim to reduce climate impact and energy costs by encouraging efficient energy and resource use in construction. As infrastructure grows with a looming energy crisis, EEB promotes good practices like reducing heating/cooling demands through insulation, shading, and efficient systems. Key energy efficiency measures for buildings include limiting exposed areas, improving insulation, using natural ventilation, maximizing daylighting, installing efficient lighting and water heating controls, and recovering heat from hot water pipes.
This document provides information on calculating heating loads for buildings. It discusses key factors that influence heating loads such as outdoor and indoor temperatures, heat transfer methods, thermal properties of building materials, window properties, thermal bridges, and adjacent unheated areas. The document also provides example calculations and tables of correction factors to account for the influence of unheated neighboring spaces.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
Research lead discusses how new generation air source heat pumps perform in Minnesota’s colder climate, how to best integrate air source heat pumps into utility efficiency programs, and how this new technology has the potential to create new business opportunities in the building and design world.
Conventional Roofing Assemblies: Measuring the Thermal Benefits of Light to D...RDH Building Science
Presentation Overview:
• Conventional Roofing Designs
and Current Issues
• Conventional Roofing Field
Monitoring and Research
Program
• Measured Insulation Performance
• Selecting Roofing Membrane
Color and Insulation Strategy for
Optimum Energy Efficiency
• Case Studies
This document summarizes the energy efficiency and cost analysis of a residential home that uses a geothermal heat pump system compared to an air conditioning system. The 750 square meter home uses geothermal heat pumps for heating, cooling and domestic hot water. Thermal and cooling loads were calculated to be 45kw and 65kw respectively. Using geothermal saves an estimated 2,386 euros or 63.64% per year compared to an air conditioning system. The geothermal system has a payback period of 1.79 years based on its higher upfront cost of 88,120 euros versus 64,240 euros for an air conditioning system. Geothermal provides benefits like constant temperature regulation regardless of outside climate and long equipment life
ETP AC Gas Chiller for Middle East in Kw- Oct 2015 dispos V1Christian Moreau
This document discusses a reversible gas heat pump system called ETP that provides cooling, heating, and hot water for commercial and industrial applications. It can operate in various climates from 0-58°C and sources energy from natural gas, electricity, photovoltaics, and wind power. The system provides optimized and cost efficient energy usage through automatic arbitration between gas and electric networks. It also offers options for increased capacity through absorption modules or connection to desalination.
The document discusses various definitions for low and zero carbon buildings including site autonomy, on-site carbon neutral, net zero carbon, and near-site zero carbon. It also discusses additionality, carbon offsetting, and green power. It then shows graphs comparing typical new building energy usage, cooling systems, and cooling loads for different facade types. The document concludes by discussing strategies to design beyond best practice energy efficiency in new buildings through enhanced insulation, reduced hot water usage, enhanced facades, and improved air/water distribution efficiency.
Presentation Outline:
- Gravity support systems
- Design criteria and thermal performance requirements
- Canadian energy codes
- Nominal vs. Effective R-Values
- Thermal modeling and effective
- R-values
- Conclusions
Energy Consumption in Low-Rise Wood Frame Multi-Unit Residential BuildingsRDH Building Science
A study was performed to understand the energy consumption in low-rise wood-frame multi-unit residential buildings (MURBs) and townhouse buildings in south-west British Columbia. Low-rise MURBs are an important building type as they make up a growing proportion of housing stock in cities across North
America.
Through this study, energy data was collected from electricity and gas utilities for 20 low-rise buildings (four storeys and less) and three townhouse complexes. This data was calendarized and weather normalized to determine average annual and monthly energy consumption for analysis and comparison. Two buildings were chosen from the data set for detailed analysis, one low-rise (four-storey) and one townhouse complex. The buildings were selected based on characteristics typical of low-rise MURBs in south-west BC. The purpose of the detailed analysis was to assess opportunities to improve the energy efficiency and reduce carbon emissions in existing low-rise MURBs using whole building energy modelling.
This paper details the energy consumption trends observed through the data analysis, and the energy modelling results of the buildings chosen for detailed study. These results are also compared to results from a similar study which evaluated the energy use in mid- to high-rise non-combustible MURBs. The work presented here will improve our understanding of energy consumption in low-rise MURBs, and characterize opportunities for energy savings in these buildings.
Presented by Elyse Henderson at the 15th Canadian Conference on Building Science and Technology
In 2010, REHVA made a benchmark study on European regulations on energy efficiency of buildings. These slides present the individual country reports from the study, which was commissioned by Sitra to support the ERA17 project.
This document summarizes the proposed deep energy retrofit for a block of flats in Dublin to improve energy efficiency. The initial proposal focused on fabric upgrades and individual gas boilers, achieving a BER of A3. Further proposals introduced a central heating system, MVHR, reduced thermal bridging, and biomass boilers, lowering the predicted energy usage and achieving the target BER of A2. Key results included a space heating demand of near zero in some units and average CO2 emissions of 602kg/y reduced to 228kg/y.
Energy Efficiency Methods And Techniques V.2patmcmmc
This document discusses various energy efficiency methods and techniques that can help lower energy bills, improve home comfort, and reduce environmental impact. It describes how improving insulation, installing efficient heating systems and controls, reducing air leakage, and adopting energy efficient behaviors can significantly cut household energy usage. Specific techniques covered include attic insulation, draught-proofing, efficient lighting and appliances, low-flow fixtures, and proper heating system maintenance. The goal is to use energy more efficiently and eliminate waste to save money while keeping homes warm and healthy.
Timber frame construction can be used to build low or zero carbon housing by achieving high levels of insulation and airtightness. Passive houses require air infiltration rates below 0.03 air changes per hour and use heat recovery ventilation systems. Using increased insulation, achieving air tightness of less than 0.1 air changes per hour, and integrating solar technology and heat recovery ventilation can allow timber frame homes to meet future regulations requiring homes that use 62 kWh/m2 or less per year. Proper workmanship will be important to ensure high performance.
Energyes division ener termopac line 2015 ev v02Christian Moreau
This document discusses EnerTermoPac (ETP), a multi-energy hybrid system that can provide heating, cooling, hot water, and electricity using various energy sources. ETP aims to reduce natural gas consumption compared to traditional boilers. It claims a 40% reduction in gas usage versus traditional boilers and consumes half as much gas as cogeneration systems for equivalent thermal energy production. The document outlines ETP product lines for industrial, commercial, and residential applications with engine sizes from 2 to 71 liters providing 50kW to 1200kWe. It also describes ETP control and interface features and provides an example of a system combining ETP modules with heat pumps, energy storage, photovoltaics, and other technologies
Health Business Services, HSE NZEB approach by Brendan ReddingtonSustainableEnergyAut
This document discusses requirements for nearly zero-energy buildings (NZEB) for public authorities in Ireland. New buildings owned and occupied by public authorities must be NZEB after December 31st 2018, and all new buildings will be required to be NZEB after December 2020. The purpose of the seminar is to launch the NZEB specification for public authorities. Major renovations will also need to meet energy efficiency requirements. The document outlines challenges in meeting these new standards for healthcare buildings, including infection control, glazing ratios, air tightness, renewables, and coordinating with CHP systems.
Energy Consumption in Mid to High-rise Residential Buildings both Before and ...RDH Building Science
This document analyzes energy consumption data from six mid- to high-rise residential buildings before and after enclosure rehabilitation. It found that while enclosure retrofits improved building enclosures, they did not necessarily reduce total energy use, as service systems had a greater influence on energy consumption. On average, the buildings saw a 4.8% reduction in total energy use after rehabilitation, but results varied, with savings of up to 16.8% in one building and increased usage of 13.8% in another. The study concluded that energy improvements require coordinated efforts between enclosure and service system engineers.
Energy efficient buildings (EEB) aim to reduce climate impact and energy costs by encouraging efficient energy and resource use in construction. As infrastructure grows with a looming energy crisis, EEB promotes good practices like reducing heating/cooling demands through insulation, shading, and efficient systems. Key energy efficiency measures for buildings include limiting exposed areas, improving insulation, using natural ventilation, maximizing daylighting, installing efficient lighting and water heating controls, and recovering heat from hot water pipes.
This document provides information on calculating heating loads for buildings. It discusses key factors that influence heating loads such as outdoor and indoor temperatures, heat transfer methods, thermal properties of building materials, window properties, thermal bridges, and adjacent unheated areas. The document also provides example calculations and tables of correction factors to account for the influence of unheated neighboring spaces.
Building Energy 2014: PV and Heat Pumps by Fortunat Muellerfortunatmueller
Presentation on the possibilities for Net Zero building using a combination of Grid Tied PV and Ductless Mini Split heat pumps. from Building Energy 2014 Tuesday seminar
Research lead discusses how new generation air source heat pumps perform in Minnesota’s colder climate, how to best integrate air source heat pumps into utility efficiency programs, and how this new technology has the potential to create new business opportunities in the building and design world.
Conventional Roofing Assemblies: Measuring the Thermal Benefits of Light to D...RDH Building Science
Presentation Overview:
• Conventional Roofing Designs
and Current Issues
• Conventional Roofing Field
Monitoring and Research
Program
• Measured Insulation Performance
• Selecting Roofing Membrane
Color and Insulation Strategy for
Optimum Energy Efficiency
• Case Studies
This document summarizes the energy efficiency and cost analysis of a residential home that uses a geothermal heat pump system compared to an air conditioning system. The 750 square meter home uses geothermal heat pumps for heating, cooling and domestic hot water. Thermal and cooling loads were calculated to be 45kw and 65kw respectively. Using geothermal saves an estimated 2,386 euros or 63.64% per year compared to an air conditioning system. The geothermal system has a payback period of 1.79 years based on its higher upfront cost of 88,120 euros versus 64,240 euros for an air conditioning system. Geothermal provides benefits like constant temperature regulation regardless of outside climate and long equipment life
ETP AC Gas Chiller for Middle East in Kw- Oct 2015 dispos V1Christian Moreau
This document discusses a reversible gas heat pump system called ETP that provides cooling, heating, and hot water for commercial and industrial applications. It can operate in various climates from 0-58°C and sources energy from natural gas, electricity, photovoltaics, and wind power. The system provides optimized and cost efficient energy usage through automatic arbitration between gas and electric networks. It also offers options for increased capacity through absorption modules or connection to desalination.
The document discusses various definitions for low and zero carbon buildings including site autonomy, on-site carbon neutral, net zero carbon, and near-site zero carbon. It also discusses additionality, carbon offsetting, and green power. It then shows graphs comparing typical new building energy usage, cooling systems, and cooling loads for different facade types. The document concludes by discussing strategies to design beyond best practice energy efficiency in new buildings through enhanced insulation, reduced hot water usage, enhanced facades, and improved air/water distribution efficiency.
Presentation Outline:
- Gravity support systems
- Design criteria and thermal performance requirements
- Canadian energy codes
- Nominal vs. Effective R-Values
- Thermal modeling and effective
- R-values
- Conclusions
Energy Consumption in Low-Rise Wood Frame Multi-Unit Residential BuildingsRDH Building Science
A study was performed to understand the energy consumption in low-rise wood-frame multi-unit residential buildings (MURBs) and townhouse buildings in south-west British Columbia. Low-rise MURBs are an important building type as they make up a growing proportion of housing stock in cities across North
America.
Through this study, energy data was collected from electricity and gas utilities for 20 low-rise buildings (four storeys and less) and three townhouse complexes. This data was calendarized and weather normalized to determine average annual and monthly energy consumption for analysis and comparison. Two buildings were chosen from the data set for detailed analysis, one low-rise (four-storey) and one townhouse complex. The buildings were selected based on characteristics typical of low-rise MURBs in south-west BC. The purpose of the detailed analysis was to assess opportunities to improve the energy efficiency and reduce carbon emissions in existing low-rise MURBs using whole building energy modelling.
This paper details the energy consumption trends observed through the data analysis, and the energy modelling results of the buildings chosen for detailed study. These results are also compared to results from a similar study which evaluated the energy use in mid- to high-rise non-combustible MURBs. The work presented here will improve our understanding of energy consumption in low-rise MURBs, and characterize opportunities for energy savings in these buildings.
Presented by Elyse Henderson at the 15th Canadian Conference on Building Science and Technology
In 2010, REHVA made a benchmark study on European regulations on energy efficiency of buildings. These slides present the individual country reports from the study, which was commissioned by Sitra to support the ERA17 project.
This document summarizes the work of the SERVE project in Tipperary, Ireland. The SERVE project retrofitted existing homes and buildings, constructed new buildings, installed renewable energy systems, collected energy usage data, and researched socioeconomic impacts. Key results included 400 retrofits, 50 new builds, renewable energy installations, over 40 million pieces of energy data collected, and €4.1 million in grant aid secured. Energy usage decreased and biomass use increased post-retrofit. The document discusses how the SERVE project informed current national retrofit programs and energy policies in Ireland.
The document discusses the Northern Ireland Housing Executive's role in promoting energy conservation and supporting government energy policies for the 86,500 homes it owns. It aims to innovate to provide benefits to tenants by retrofitting homes for energy efficiency. This includes utilizing its existing energy storage capacity from thermal stores and exploring using more renewable electricity to displace stored fossil fuels and reduce carbon emissions and tenants' bills. It also discusses developing more intelligent control systems and pay-as-you-go energy options.
This document provides information on energy balance, types of buildings, energy conservation methods, heating and cooling systems, renewable energy sources, and tariff systems for electricity, natural gas, water, and heating energy. It discusses the typical sources of heat gains and losses in buildings and how they are distributed (e.g. walls account for 21% of heat losses). It also describes different residential and commercial building types and various envelope and system strategies to improve energy efficiency. Finally, it outlines the rate structures and billing approaches for various utility services in residential and commercial sectors.
In case you missed it !! NuTech gave a presentation at the recent Gas Networks Ireland (GNI) Conference for BER Assessors. The presentation deals mainly with how the NuTech Solar Enhanced Heating and Hot Water system can be used together with a simple and reliable gas boiler system can be used to comply with Part L & achieve an A Rated House. The presentation also gives information on the NuTech Solar Enhanced Ventilation and Hot Water system can be used to satisfy Part L.
The document discusses passive housing in Europe, which aims to reduce energy consumption in buildings by at least 90% compared to conventional construction. It outlines the key criteria for passive houses, including an ultra-low maximum annual heat demand of 15 kWh/m2 and high insulation standards. Several successful passive house projects in Europe are highlighted, and it is noted that passive housing is gaining popularity, with Austria aiming for 25-40% of new homes to meet passive house standards by 2010.
The document summarizes information presented at a seminar on heat pumps and renewable energy technologies. It discusses sustainable development and various forms of renewable energy like heat pumps, solar, and wind. It then focuses on heat pumps, explaining how they work, their advantages over gas boilers in terms of cost and carbon emissions, and different types of ground source heat pumps. Micro district heating solutions are also introduced. The document concludes by covering incentives for renewable technologies like the Renewable Heat Incentive and loans available for businesses and organizations.
Tipperary Energy Agency has launched a pilot funding project that aims to deliver a deep retrofit for homes funded with a repayable loan and significant capital discounts. The project aims to move away from shallow retrofit and test applications of whole house retrofit focusing on cost effective solutions. This type of retrofit is designed to significantly decrease Ireland’s carbon emissions from the domestic sector and is critical to reduce the emissions of greenhouse gases.
This document summarizes a case study evaluating the energy savings from a deep energy retrofit of a multi-unit residential building in Vancouver, BC. It found that upgrading the building enclosure through exterior wall insulation, triple-glazed windows, and air sealing reduced the building's energy use intensity by 19% from 226 to 183 kWh/m2/yr, matching the 20% savings predicted by energy modeling. Measured savings included a 33% reduction in suite electricity use and a 63% drop in electric baseboard heating. Further energy and cost savings may be possible by upgrading the building's mechanical ventilation system. The study demonstrates that deep energy retrofits can significantly cut energy consumption in existing multi-unit residential buildings.
This document outlines a three-stage plan to retrofit a home in Viroqua, WI to achieve near net-zero energy use. Stage 1 focused on exterior upgrades like adding insulation, air sealing, and a new drainage plane. This reduced energy use by 56% with estimated savings of $950 per year. Stage 2 will address the basement and add more insulation. Stage 3 involves installing a renewable energy system. The homeowner used energy modeling software to predict reductions at each stage, with the goal of meeting efficiency thresholds for the Thousand Home Challenge. Non-energy benefits include improved comfort and reduced maintenance needs. Challenges included staying within budget and addressing issues like high humidity uncovered by the tightening of the home.
Xavier Dubuisson is a consulting engineer with over 16 years of experience in renewable energy and energy efficiency. He founded XD Consulting in 2011 to provide sustainable energy services to private and public sector clients. He has pioneered local energy planning in Ireland and continues to support communities in transitioning to a low-carbon future.
The Interim NZEB Specification for Public Sector buildings sets out a performance specification for new buildings owned and occupied by Public Authorities after 31st Dec 2018. It is intended that this specification will form the Nearly Zero Energy Buildings requirement in the interim period until the new 2017 Part L for Buildings other than Dwellings takes effect.
District heating potential in the Italian NECP: assessment through a new resi...IEA-ETSAP
District heating potential in the Italian NECP: assessment through a new residential model in TIMES-RSE
Ms. Corine Nsangwe Businge, RSE - Ricerca sul Sistema Energetico
This document discusses ways to improve the efficiency of heating systems. It provides quotes about culture and learning from others. It then discusses the goals of green heating, using the least amount of fuel. It outlines three parts to improving heating system efficiency: fuel efficiency, boiler side efficiency, and system side efficiency. Under each, it provides information on improving efficiency in areas like lowering water temperature, recovering heat, reducing standby losses, tuning combustion, and balancing the heating system. Case studies and examples from Europe show significant energy savings that can be achieved.
Renewable energy sources like wind turbines, solar panels, and heat pumps provide alternatives to fossil fuels but have some limitations. Wind turbines have low capacity factors of 0.25-0.4 and require high upfront costs of £30,000 for a 6kW system. Solar panels cost £2,000-£4,000 installed for a house and save around £60-£92 per year in electricity bills. Photovoltaic solar cells have high costs of 60-70p/kWh currently and may not be cost competitive with retail electricity until after 2025. Ground source heat pumps can provide efficient heating but require extensive piping installed underground that may have long term temperature effects on the soil.
Part L and O 2021 – what these changes mean for designersIES VE
1. The document outlines changes to Part L and NCM modelling guidelines for Part L 2021 compliance in England, including a primary energy target, nearly zero energy building requirement, and updated notional building specifications and carbon factors.
2. Key changes to the notional building include lower U-values, inclusion of solar PV, secondary hot water circulation where specified, and revised lighting and fan energy calculations.
3. New monthly carbon factors for grid electricity see a 62-82% reduction compared to Part L 2013 values.
Net Zero heating system. 3700 sq ft two story with full basementGreg Mulder
This document discusses steps to make a building net zero and maximize LEED points through energy efficiency improvements. It outlines analyzing shell efficiency, HVAC systems, appliances, lighting and solar to determine energy needs. Integrating these steps can achieve many LEED points through energy reduction and on-site renewable energy. Specific upgrades discussed include high-efficiency insulation, windows, fans, lighting, heat pumps and a standardized solar system.
Similar to NZEB: Regulatory impact assessment for part l dwellings (20)
SEAI Business Decarbonisation Supports SSRH and EXEED Schemes launch SustainableEnergyAut
This document provides an overview and updates to Ireland's Support Scheme for Renewable Heat (SSRH) and Excellence in Energy Efficient Design (EXEED) programmes. It discusses expanding the SSRH scheme to new sectors and fuel types. Support levels for heat pumps and biomass/biogas tariffs will increase. The EXEED programme will remove its "Shadow Price of Carbon" test and increase the maximum grant to €3 million. Both programmes aim to rapidly increase renewable heat and energy efficiency upgrades in businesses and public buildings to help meet Ireland's 2030 emissions targets.
The National Transport Authority is taking actions to decarbonize public transport in Ireland through strategies, funding, and infrastructure projects. This includes electrifying rail services, investing in light rail and bus projects, and transitioning bus fleets to lower emission vehicles like electric and hybrid buses. The goal is to support a 51% reduction in transport emissions by 2030 while enabling more sustainable travel options. Challenges remain in fully closing the emissions gap, and demand management may be needed through policies like congestion charges.
Our business team at SEAI will take you through education supports, energy audit voucher,s and grant supports for businesses who want to save energy and reduce their bills. You will also learn about how you can fund your renewable energy transition.
The SEAI Fellowship pilot programme will provide the opportunity for postdoctoral or experienced researchers to apply for research fellowship positions based within SEAI.
This document summarizes an event held by SEAI (Sustainable Energy Authority of Ireland) to launch their 2022 Energy in Ireland report. It included presentations on past definitive annual energy data, provisional monthly energy data, energy modelling projections, price trends, and geographic energy mapping. The event provided an overview of Ireland's energy system, insights into annual and monthly energy trends, and the perspective of meeting future carbon budgets and renewable energy targets. Attendees could ask questions in a chat function that SEAI would respond to and potentially address in a Q&A session.
This document summarizes a briefing for registered energy auditors on the Support Scheme for Energy Audits (SSEA) in Ireland. Over 1550 energy audit vouchers have been issued to date, with Dublin receiving the most. There are now 138 registered energy auditors participating in the program. The briefing covered energy audit reports, recommendations, data collection, and proposed changes to the program for 2023, including limiting vouchers to one per applicant and excluding transport costs from the €10,000 energy spending threshold. The 2023 budget for the program will remain €2 million.
Reduce Your Use - Energy Performance Officers Webinar PresentationSustainableEnergyAut
This document outlines information about the Reduce Your Use Initiative for the public sector in Ireland. It provides details on the mandated actions under the initiative, which include establishing maximum heating periods, minimum heating temperatures of 19 degrees, switching off external lighting between 5-7pm, occupying the smallest possible space, reducing electricity use at peak times, and conducting energy assessments and audits. It also discusses tracking progress under the initiative and answers common questions about implementing the mandated actions.
The document provides information about developing Climate Action Roadmaps for public sector bodies in Ireland. It discusses:
- The Climate Action Mandate requiring public bodies to produce roadmaps by the end of 2022.
- Guidance being provided by SEAI and EPA on completing the roadmaps, including key areas to cover and timeline requirements.
- The SEAI Gap to Target tool which helps organizations understand their emissions reduction targets and map pathways to achieving them by 2030.
- Supports available from SEAI like partnership managers and advisors to help organizations populate the tool and develop actions for their roadmaps.
This webinar will help you understand:
How to reduce your energy use and bills this winter.
SEAI supports and grants to help you further reduce costs and move away from fossil fuels.
How to fund your renewable energy transition.
The objective of this training will be to introduce contractors to the fundamentals of Quality Management Systems and to help them to understand how they can assist contractors in providing quality service to our Homeowners.
Session 1 - National Energy Research & Policy Conference 2022SustainableEnergyAut
The document discusses societal engagement and public participation in Ireland's Climate Action Plan. It outlines how previous public consultations have informed climate policy and the importance of continuing meaningful public engagement. It describes the National Dialogue on Climate Action, which aims to establish an evidence-based model for public participation in climate policy through activities that improve climate literacy, empower communities, and inform policymaking through research. The goal is to build a new social contract between the government and public around climate action through collaborative and inclusive engagement.
This document provides information about an upcoming invitation to tender (ITT) for SEAI's Schools' Workshop Programme. It outlines the timeline for the tender, structure in four lots, current models of workshop delivery, and centres currently involved in delivery. The estimated budget and duration of contracts awarded through the tender are also included. The ITT aims to expand the capacity and reach of the energy and climate education workshops provided to schools across Ireland.
Session 3 - National Energy Research and Policy Conference 2022SustainableEnergyAut
This document discusses engaging communities in offshore wind projects. It emphasizes the importance of working with communities through fair and meaningful engagement to achieve mutually beneficial outcomes. It discusses how recognizing affected communities, ensuring just procedures, and distributing benefits fairly can help achieve energy justice. Key aspects include identifying communities in relation to impacts and benefits, engaging communities early through co-production and inclusivity, and feeding back results while making changes based on input. Distributing benefits widely based on ability, rather than assuming monetary benefits can "buy" support, is also discussed as important for a just transition to clean energy.
Session 2 - National Energy Research and Policy Conference 2022SustainableEnergyAut
Presentations from:
Dr Bernadette Power
Dr Gary Goggins
Jean-Pierre Roux
Dr Noreen Brennan
Dr Niall Dunphy
Katie Harrington
Dr Róisín Moriarty
Dr Brian Caulfield
Session 1 - National Energy Research and Policy Conference 2022SustainableEnergyAut
This document discusses supporting energy communities to lead societal transformation towards a zero carbon future in Ireland. It outlines some existing SEAI programs that support communities, including Sustainable Energy Communities, Better Energy Communities, and Renewable Energy Communities. It envisions communities having access to reliable funding and resources to undertake local climate action projects that provide enduring community benefits. Key challenges discussed include building local capacity, achieving consensus on climate priorities, and balancing structured models with flexibility. Important research areas include appropriate community roles, financial instruments, and ensuring an inclusive people-first approach.
This is a stakeholder engagement webinar in relation to identifying a suitable energy education service provider(s), to provide Management and Administrative Services to support the delivery of the SEAI School Workshop Programme.
The webinar will outline how SEAI can help and support committed public bodies now and in the long term to achieve 2030 targets. SEAI are delighted to have Jan Rosenow, Director of European Programmes at the Regulatory Assistance Project, addressing the current drivers for climate action and why it is an imperative strategic concern for all businesses, public and private. Peter Smyth, Assistant National director in the HSE Capital and Estates Department will cover their journey from ad hoc once-off projects dependent on annual budgets, to a strategic HSE Infrastructure Decarbonisation Roadmap.
Download the Latest OSHA 10 Answers PDF : oyetrade.comNarendra Jayas
Latest OSHA 10 Test Question and Answers PDF for Construction and General Industry Exam.
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To Help OSHA 10 trainees to pass their pre-test and post-test we have prepared set of 390 question and answers called OSHA 10 Answers in downloadable PDF format. The OSHA 10 Answers question bank is prepared by our in-house highly experienced safety professionals and trainers. The OSHA 10 Answers document consists of 390 MCQ type question and answers updated for year 2024 exams.
Exploring low emissions development opportunities in food systemsCIFOR-ICRAF
Presented by Christopher Martius (CIFOR-ICRAF) at "Side event 60th sessions of the UNFCCC Subsidiary Bodies - Sustainable Bites: Innovating Low Emission Food Systems One Country at a Time" on 13 June 2024
A Comprehensive Guide on Cable Location Services Detections Method, Tools, an...Aussie Hydro-Vac Services
Explore Aussie Hydrovac's comprehensive cable location services, employing advanced tools like ground-penetrating radar and robotic CCTV crawlers for precise detection. Also offering aerial surveying solutions. Contact for reliable service in Australia.
Monitor indicators of genetic diversity from space using Earth Observation dataSpatial Genetics
Genetic diversity within and among populations is essential for species persistence. While targets and indicators for genetic diversity are captured in the Kunming-Montreal Global Biodiversity Framework, assessing genetic diversity across many species at national and regional scales remains challenging. Parties to the Convention on Biological Diversity (CBD) need accessible tools for reliable and efficient monitoring at relevant scales. Here, we describe how Earth Observation satellites (EO) make essential contributions to enable, accelerate, and improve genetic diversity monitoring and preservation. Specifically, we introduce a workflow integrating EO into existing genetic diversity monitoring strategies and present a set of examples where EO data is or can be integrated to improve assessment, monitoring, and conservation. We describe how available EO data can be integrated in innovative ways to support calculation of the genetic diversity indicators of the GBF monitoring framework and to inform management and monitoring decisions, especially in areas with limited research infrastructure or access. We also describe novel, integrative approaches to improve the indicators that can be implemented with the coming generation of EO data, and new capabilities that will provide unprecedented detail to characterize the changes to Earth’s surface and their implications for biodiversity, on a global scale.
Emerging Earth Observation methods for monitoring sustainable food productionCIFOR-ICRAF
Presented by Daniela Requena Suarez, Helmholtz GeoResearch Center Potsdam (GFZ) at "Side event 60th sessions of the UNFCCC Subsidiary Bodies - Sustainable Bites: Innovating Low Emission Food Systems One Country at a Time" on 13 June 2024
(Q)SAR Assessment Framework: Guidance for Assessing (Q)SAR Models and Predict...hannahthabet
The webinar provided an overview of the new OECD (Q)SAR Assessment Framework for evaluating the scientific validity of (Q)SAR models, predictions, and results from multiple predictions. The QAF provides assessment elements for existing principles for evaluating models, as well as new principles for evaluating predictions and results. In addition to the principles, assessment elements, and guidance for evaluating each element, the QAF includes a checklist for reporting assessments.
This new Framework provides regulators with a consistent and transparent approach for reviewing the use of (Q)SAR predictions in a regulatory context and increases the confidence to accept alternative methods for evaluating chemical hazards. The OECD worked closely together with the Istituto Superiore di Sanità (Italy) and the European Chemicals Agency (ECHA), supported by a variety of international experts to develop a checklist of criteria and guidance for evaluating each criterion. The aim of the QAF is to help establish confidence in the use of (Q)SARs in evaluating chemical safety, and was designed to be applicable irrespective of the modelling technique used to build the model, the predicted endpoint, and the intended regulatory purpose.
The webinar provided an overview of the project and presented the main aspects of the framework for assessing models and results based on individual or multiple predictions.
The modification of an existing product or the formulation of a new product to fill a newly identified market niche or customer need are both examples of product development. This study generally developed and conducted the formulation of aramang baked products enriched with malunggay conducted by the researchers. Specifically, it answered the acceptability level in terms of taste, texture, flavor, odor, and color also the overall acceptability of enriched aramang baked products. The study used the frequency distribution for evaluators to determine the acceptability of enriched aramang baked products enriched with malunggay. As per sensory evaluation conducted by the researchers, it was proven that aramang baked products enriched with malunggay was acceptable in terms of Odor, Taste, Flavor, Color, and Texture. Based on the results of sensory evaluation of enriched aramang baked products proven that three (3) treatments were all highly acceptable in terms of variable Odor, Taste, Flavor, Color and Textures conducted by the researchers.
2. Project Scope
DHPLG appointed AECOM and Currie and Brown to carry out the
following :
– Energy and carbon performance modelling for 5 typical new
dwellings constructed to NZEB performance levels
– Identify the uplift in capital cost for NZEB performance
– Assess any associated overheating risk
– Review the performance of renewable energy systems in multi-
storey apartment blocks
– (Identify the additional capital cost of major renovations to a
cost optimal level as required under EPBD)
3. Definition of NZEB
The European Energy Performance of Buildings Directive has the
following definition:
– “a building that has a very high energy performance…. The
nearly zero or very low amount of energy required should be
covered to a very significant extent by energy from renewable
sources including energy from renewable sources produced on-
site or nearby”
4. Definition of NZEB
DHPLG has the more explicit definition:
– Maximum Energy Performance Coefficient of 0.30
– Maximum Carbon Performance Coefficient of 0.35
– Minimum Renewable Energy Ratio of 0.20
5. Specifications to meet NZEB: Dwelling types
Building Category Building Type Floor Area
Single Family
Buildings
Semi-Detached
House
126 m2
Detached House 160 m2
Bungalow 104 m2
Apartment Block Mid-Floor Flat 80 m2
Top-Floor Flat 80 m2
6. Specifications to meet NZEB: Fabric and Services
Elements Proposed Part L 2018 specification
External Wall U-value 0.13
Floor U-value 0.14
Roof U-value 0.11
Windows U-value 0.9 (Triple glazed)
Thermal Bridging Y-value 0.05
Air Permeability 5
Ventilation strategy Natural ventilation (or cMEV at 3m3/m2/hr)
Heating system 91.3% mains gas condensing gas boiler
Controls
Boiler interlock
Time and temperature zone control
Hot water demand
1 shower with 6 litres/min flow restrictor
1 Bath
No electric showers
Overall target of 125 litres/person/day
Hot water cylinder 120 litres, 100mm factory insulated
Lighting
100% low energy lighting:
· A+ Rated Bulbs, 94 lumen/cW, 4 W/m2
7. Specifications to meet NZEB: Renewables (Semi)
Heating and
Ventilation
PV
(kWp)
PV
(% roof
area)
EPC CPC RER
Gas Boiler
NV
1.15 7% 0.30 0.28 0.22
Gas Boiler
MVHR + AP of 3
0.85 5% 0.26 0.24 0.20
Heat Pump
NV
0 0% 0.25 0.21 0.42
Heat Pump
MVHR + AP of 3
0 0% 0.25 0.20 0.33
MVHR: SFP = 0.8 W/l/s, HR = 85%
HP: Individual air to water, underfloor heating, SH =400%, DHW = 200%
8. Specifications to meet NZEB: Renewables (Mid-flat)
Heating and
Ventilation
PV
(kWp)
PV
(% roof
area)
EPC CPC RER
Gas Boiler
NV
0.85 8% 0.30 0.29 0.27
Gas Boiler
MVHR + AP of 3
0.55 5% 0.27 0.26 0.20
Heat Pump
NV
0 0% 0.29 0.25 0.37
Heat Pump
MVHR + AP of 3
0 0% 0.29 0.25 0.29
9. Uplift in capital cost to meet NZEB
Currie and Brown provided 2017 Dublin Cost data
– Internal cost database (live projects they are supporting)
– Cross-checked with peers who have independent experience of
the Irish construction market
– Cross-referenced with a third party database in the Irish market
Uplift against TGD 2011
– Based on Appendix E of TGD 2011
– Amount of PV varying by building type
10. Uplift in capital cost (depending on compliant solution)
Building Type Additional
CAPEX
(€/m2)
Additional
CAPEX
(%)
Semi-Detached House 12 to 39 0.9 to 2.9
Detached House 13 to 49 1.0 to 3.5
Bungalow 14 to 65 1.0 to 4.2
Top-Floor Flat 13 to 49 0.7 to 2.9
Mid-Floor Flat 8 to 49 0.5 to 2.9
– NZEB can be achieved ~0.5-1.0% uplift of current CAPEX
– Lowest cost solutions: PV or HP alone (CAPEX associated with
move to triple glazing & LZCs)
– Higher cost solutions: SHW or adding cMEV/MVHR
11. Assess overheating risk
Apply new CIBSE TM59 modelling methodology and criteria
to assess residential overheating
– Criterion A (living rooms, kitchens & bedrooms)
Internal temperature should not exceed a defined comfort
temperature by 1°C or more for more than 3% of occupied
hours over the summer period (May to Sept)
– Criterion B (bedrooms)
The internal temperature between 10 pm and 7 am should not
exceed 26°C for more than 1% of annual hours
12. Assess overheating risk
– Undertook IES thermal modelling
• Five dwelling forms
• Manchester 2020s DSY1 weather file (Dublin data TBC)
• TM59 methodology occupancy profile, heat gains etc
– Occupants:
• Detached house: 4 bed 8 person
• Semi-detached house: 3 bed 5 person
• Bungalow: 3 bed 6 person
• Apartments: 2 bed 4 people
– Daytime occupancy assumed in all cases
13. Assess overheating risk
– Windows start to open in occupied rooms when indoor
(operative) temperature > 22C and fully open when
temperature > 26C. Reverse occurs at temperatures fall.
– Internal doors open all the time, with the exception of bedroom
doors which are closed overnight
– Windows: g-value = 0.6 (triple glazed, low E, soft coat)
– Orientation
• Living rooms face west. Apartments assumed west and south
• No external shading or internal blinds/ curtains assumed for
base-case
14. Assess overheating risk
– Risk mitigation sufficient where dwelling overheated
• Occupant controlled curtain/ blinds drawn on the east, west
and/or south façades when incident solar radiation
• Incident radiation to lower shade - 200 W/m2
• Incident radiation to raise shade - 150 W/m2
16. Renewable energy systems in apartment blocks
– Evaluate ability of city apartment block to meet RER of 20%
• Two apartment blocks: 6 & 14 stories (12 units per floor)
• Heat pumps or PVs (roof only)
– To work out the maximum available roof area for PVs:
• 70% of roof area available for PV, after services and over-
shading
• 20% allowance for spacing between panels and access.
• Net maximum available area of 56% of the total roof area.
17. Renewable energy systems in apartment blocks
– Results showed
• gas boilers and PVs feasible to 12 stories
• Heat pumps feasible for all heights
Ventilation
Package
Heating
Package
kWp per
apartment
EPC CPC RER Comply
Natural ventilation Gas boiler 0.50 0.33 0.31 0.16 No
Natural ventilation Heat pump - 0.28 0.24 0.37 Yes
MVHR Gas boiler 0.50 0.28 0.26 0.18 No
MVHR Heat pump - 0.28 0.24 0.29 Yes
Results for 14 storey apartment block
18. – The dwelling types achieved compliance with proposed NZEB
specification using different design solutions.
– Average cost uplift across dwellings was 1.9%. Range of 0.5% to
4.2% depending on dwelling and design solution.
– Overheating analysis indicated a relatively small overheating risk
based on the new CIBSE TM59. The mitigation package was fairly
limited to occupant controlled curtain/ blinds.
– Heat pumps are feasible solution to meet RER on all apartment
blocks. PV is feasible for the apartment block modelled up to 12
storeys in height.
Conclusions