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A team of students from Warsaw University of Technology in Poland were last month named the winners of the ‘HVAC System Selection’ category in the 2017 ASHRAE Student Design Competition. IES partnered with the student team to provide free access to its Virtual Environment (VE) software.
The ASHRAE Student Design Competition recognizes outstanding student design projects, encourages undergraduate students to become involved in the profession, promotes teamwork and allows students to apply their knowledge of practical design.
The winning project, PROJECT ISLAND, aimed to design the best HVAC system for a building of a metro station located on one of Diego de Ramirez Islands in Chile, 60 miles from Cape Horn. The students used the IESVE to model the HVAC system and run calculations and dynamic simulations that were compatible with ASHRAE Standards. This included HVAC Loads calculations and solar analysis to measure the amount of PV panels required.
On the project website the team described how they felt about winning the competition…
“We feel honored and proud to be awarded. Getting a first prize in an international, prestigious competition has a truly great meaning for us. It is a valuable, amazing experience. This success is a truly remarkable moment in our student careers.”
The full technical report for Project Island can be downloaded via this link.
We’re proud to announce that Megan Tosh, Product Manager at IES, has received the ASHRAE Distinguished Service Award. The award recognizes those that have served ASHRAE faithfully and with distinction and who have given freely of their time and talent in chapter, regional and Society activities. Megan was one of the 56 members recognized at the recent 2017 Long Beach Annual Conference.
Previously awarded a Regional Award of Merit and Chapter Service Award, Megan is a long standing member of ASHRAE and has been involved with the Society since graduating with a Bachelors and Masters of Science in Mechanical Engineering from the University of Central Florida (UCF). Upon graduation, Megan began volunteering with the Central Florida Chapter of ASHRAE as Student Activities Chair. She had participated in the ASHRAE Student Design Competition herself, and was grateful for the opportunity to share her exposure to the HVAC&R industry with fellow UCF engineers. Eventually, Megan served as Chapter President in Central Florida after enjoying other volunteer roles with the Chapter, including serving on the Host Committee for the 2010 Winter Meeting.
In 2010, Megan joined the YEA Committee, participating in organizing the successful YEA Leadership Weekends and expanding the program beyond North America. She later served as chair of the committee from 2014 – 2015.
Megan also served as Atlanta Chapter Vice-President and Student Activities Regional Vice Chair in Region IV for 2 years. She is currently a consultant on the Student Activities Committee and the Vice Chair of the Electronic Communications Committee. Megan is a contributor to the forthcoming ASHRAE Design Guide for Air Terminal Units.
“I’m delighted to have received the Distinguished Service Award. It’s been fantastic to work with like-minded individuals to serve ASHRAE, advancing human well-being through sustainable technology for the built environment.”
Megan Tosh, Product Manager, IES
At IES We pride ourselves in hiring people who are committed to sustainability and passionate about what we do. And in turn we offer a flexible and supportive working environment and the opportunity to work with a team of friendly, interesting and diverse people from across the globe. If IES sounds like a place you’d like to work, then keep an eye on our vacancies and follow @IESCareers on twitter. You can also send in a speculative CV to firstname.lastname@example.org.
ASHRAE Members around the world recently received their 2017 Fundamentals Handbook. Most of us likely received the digital version on a CD. Many of the new updates will impact the HVAC load calculations, performed by mechanical designers day in & day out – there are new design LPDs, revised kitchen equipment resources, and additional climate data, among many other additions! Something that hasn’t changed: load calculation methods.
The 2017 edition of the Fundamentals Handbook defines only two load calculation methods: the Heat Balance Method (HBM) and Radiant Time Series (RTS). As part of the introduction, the radiant time series is categorized as “a simplification of the [heat balance] procedure”, but what exactly is the simplification?
Heat gain from the sun offers an illustrative example. Solar energy is absorbed by the exterior wall of a building and transfers to the inside of the building by conduction. Because the wall has thermal mass, that heat isn’t transferred immediately – there’s a conductive delay.
Solar energy is transmitted to the inside of the building through the window. Some of the heat is absorbed and reflected by the window, and the remainder is absorbed by the interior surfaces. When those surfaces later emit that heat by convection, cooling load is created in the room – there’s a radiative delay.
The Heat Balance Method calculates these time delay effects explicitly with some basic assumptions like uniform surface temperatures. There are no arbitrarily set parameters. Conductive, convective, and radiative heat balance is calculated directly for each surface within a room.
By contrast, the radiant time series (RTS) calculation uses radiant time factors and conduction time factors to distribute hourly heat gains over a 24 hour period instead of iteratively calculating the time delay effects. A table of time factors published in the Handbook determines how long heat is held by a wall or other surface before creating a cooling load in the space.
Whether heat balance method or radiant time series is used to calculate heating & cooling loads, computer software is nearly always employed. IES Virtual Environment (VE) software performs ASHRAE load calculations using the non-simplified Heat Balance Method, calculating heat balance and the resulting loads directly without time factors. To learn more about calculating loads for HVAC design using the VE, check out www.iesve.com/loads.
What do you get when you challenge nine interdisciplinary teams to design a net zero (or below) 50,000 ft2, 3-story Outpatient Health Care facility in Omaha, Nebraska? You get ASHRAE’s Lowdown Showdown, an energy modeling competition that showcases the talent and innovation of those in our industry using building performance analysis software.
Last year, Team IES won Best Energy Use Results and we were delighted that the winning streak continued after the team were awarded Best Workflow at SimBuild 2016 in Salt Lake City on August 11th.
This year’s IES team – going under the name Insane Energy Savers – consisted of the following members: Kent Beason, Joanne Choi, Cory Duggin, Alexandra Gramling, Ken Griffin, Amy Jarvis, Shona O’Dea, Igor Seryapin, Irina Susorova, Tristan Truyens, Brian Tysoe, Scott West and Xiangjin Yang.
Our design started by modifying the massing and program to be as climate responsive as possible, while still maintaining the core mission of an outpatient surgery center. Any non-critical spaces were migrated to the second and third floors where a common atrium was added in lieu of the circulation program areas. Exam rooms and office spaces were placed along the perimeter to allow cross ventilation from them through the atrium. Based on wind roses for the shoulder seasons, when natural ventilation is most viable, the building was rotated for the south façade to be in line with the predominant south eastern wind.
Stair stepping the south façade allows the building to self-shade for the entire cooling season and allows for passive heating in the winter as well as passive reheating of air-change dominated spaces on the first floor. Since Omaha has a significant heating season, the R-value of the walls, roof and glazing were optimized to reduce heat loss.
The air change constraints in the first floor program caused us to consider it separately. A separate dedicated outside air system (DOAS) is used for the critical spaces coupled with earth tubes to precool and preheat the required ventilation air. The non-critical areas use another DOAS with a south facing vertically mounted transpired solar collector for preheating since the windows will be open for cross ventilation during much of the cooling season. All spaces and both DOAS use a geothermal, water-cooled VRV system for their cooling and heating.
The tilted roof of the atrium was designed to hold photovoltaic panels with a 19.6% efficiency. Wind turbines were also used to produce the remainder of the energy required to get net zero.
Take a look at the poster below for more info on the project’s energy saving strategies.
An ‘Insane’ Effort
In my role as team mentor, it was awesome to see first-hand how our talented team used the Virtual Environment to complete this challenge. A lot of work was put in and it paid off when they picked up their award for Best Workflow.
It was a great effort by all involved – not just the insane ones – and it’s fantastic how each team came together to demonstrate how energy modeling tools can be used to make such a positive impact on our built environment. Bring on next year’s challenge!
Click here to see view the Insane Energy Savers’ Lowdown Showdown presentation slides.
Last Week Daniel Coakley of IES spoke on the topic of “Modelling Natural ventilation in the IESVE: Case studies & Research Outlook” at a half day seminar, organised by Cork Institute of Technology (CIT), for researchers, designers, engineers & architects.
This CIT Technical Seminar: Ventilative Cooling & Overheating Risk was organised in collaboration with IEA-EBC Annex 62 and presented state of the art utilisation of ventilation for reducing cooling energy demand and addressing the risk of overheating in low energy buildings.
In his presentation, Daniel covered;
Firstly, I must congratulate all the new ASHRAE Ireland committee, who worked really hard alongside myself, to make our first event a great success. It took place in the heart of Dublin (Dublin Castle), on 9th February 2016, and was incredibly well attended, with over 80 representatives from a diverse group across the whole building services sector – from both industry and academia. In addition, 10 sponsoring organisations including IES were also present, representing building design, HVAC equipment, refrigeration and controls.
A varied agenda included talks from across the industry:
• ASHRAE Organisation and the Ireland Section: Frank Caul (Sirus), Ken Goodman (ASHRAE Sub-Region B Chair) & Dr. Bruce D. Hunn (ASHRAE)
• Commercial Building Performance: Dr. Bruce D. Hunn (ASHRAE)
• Building energy policy and research: Kevin O’Rourke and Dr. Daniel Coakley
• Industrial Refrigerants: Seamus Kerr (RSL Ireland)
Bruce Hunn, the headline ASHRAE Distinguished Lecturer, spoke about ‘Performance Measurement protocols for Commercial buildings’, giving an in-depth discussion on characteristic measures for energy, water and indoor environmental quality (IEQ), as well as best practice guidelines for the application of each. This talk covered many important aspects of performance measurement, including setting the objective (why is it measured?), the metric (what to measure and how?), and finally the outputs in terms of appropriate benchmarks or performance indicators. The talk covered the three levels of performance objectives – basic, intermediate and advanced, giving detailed examples for each case, utilising the ASHRAE HQ building in Atlanta as a case study. Click here to view the presentation slides.
In the afternoon session, which focused on building policy and research, I introduced the concept of smart cities and smart buildings. My presentation illustrated how current IES research in this space is driving improved integration between systems, buildings, communities and cities. In particular, the talk focuses on solutions being developed through collaborative research projects and training networks, such as Horizon 2020 and Marie Curie, and how these are helping create the next generation of urban energy planners and engineering solutions capable of leveraging novel ICT technologies to improve design and operational efficiency. In particular, I highlighted my involvement in one of these projects – EINSTEIN, a Marie Curie IAPP project in collaboration with Trinity College Dublin, which aims to develop the next generation of optimised building controllers, through a combination of data-driven fault detection and prediction-based control optimisation. Click here to view the presentation slides.
Overall, the event was a great success for the launch of ASHRAE in Ireland, with a fantastic turnout, and positive feedback from attendees, sponsors and invited speakers and guests. It was great to see such a high level of interest and commitment from people from across the building services spectrum. We hope that this will lead to the growth of the organisation in Ireland, with further events already in planning, and growing interest in the formation of technical sub-committees among interested individuals and organisations.
Through my role with IES R&D, I’m lucky enough to find myself supporting the launch of the first ASHRAE Section in Ireland and am currently helping to organise its inaugural event. Taking place on 9th February at Dublin Castle, the conference will focus on commercial building energy performance, and will feature the ASHRAE Distinguished Lecturer, Dr. Bruce D. Hunn, who will lecture on measurement, evaluation and improvement of energy performance of commercial buildings. Additional talks will include recent developments in natural refrigerants, modelling of HVAC systems and controls, as well as building energy policy and regulation.
ASHRAE is an international organisation of around 53,000 members covering 132 nations, focussed on technical advancements in heating, ventilation, air-conditioning and refrigeration, and helping to promote sustainability in these areas. In June 2015, I helped establish ASHRAE Ireland, with the aim to promote the organisations goals to our current national membership, and help encourage networking of member groups and organisations under this common goal.
As well as being involved in the launch of ASHRAE Ireland I’m also a research fellow on EINSTEIN, a Marie Curie Industry-Academia Partnerships and Pathways (IAPP) project, between IES and Trinity College Dublin (TCD). The aim of EINSTEIN is to formulate and integrate a number of advanced building control strategies; Controls which will not only help eradicate errors between ‘as-built’ and ‘as-designed’ conditions but also include predictive analysis of how the building should perform, taking into account future weather predictions and occupant use. The synergy between the project and the conference theme made it the perfect fit for me and for IES who are sponsoring the event.
The event already has an excellent line-up of speakers so far, with energy sector representatives from both industry and academia. Our very own Catherine Conaghan will be speaking on “Building Energy Modelling and Smart Building Control” covering commercial available solutions IES already has in the space as well as looking at EINSTEIN and other research projects ongoing in IES R&D under the theme of operations and smart building control.
I fully expect the event will be a great opportunity to create meaningful engagement on the energy issues facing individuals and companies, particularly in the face of falling energy prices and increasing importance of meeting demanding sustainability targets.
Read more about the event and sign up here. We look forward to welcoming you to Dublin Castle on 9th February.
You may remember we blogged back in August about our participation in the ASHRAE LowDown Showdown competition. Well, we have some great news… Team IES won the Best Energy Use Results category! Liam Buckley coached the winning team, fighting off competition from seven other practitioner teams, representing software-specific tools from: Autodesk, Carrier, DesignBuilder, eQUEST, EnergyPlus, Sefaira, and Trane. We asked Liam to tell us more about the winning entry and the winning team…
Our brief was to design a three-story; 53,600-square-foot office building that included a number of specific design challenges, but also encouraged design creativity. Projects were judged on energy efficiency, design creativity, workflow innovation, teamwork and collaboration.
Obviously, the team decided to make the challenge even more challenging by locating the building in downtown Boulder, where the climate experiences vast and extreme variations including annual external conditions ranging from (-4° F to 93°F); (6% -100% Relative Humidity) and commonly occurring daytime-to-night-time temperature swings of 35°F.
The team considered 150+ Energy Conservation Measures (ECMs) and eventually chose 25-30 strategically sequenced ECMs, which included daylight harvesting controls; natural ventilation with exposed thermal mass and automated night-purge control; an air-to-water heat pump; energy-star equipment; plug load schedules from metered ZNE evangelists; fixed and dynamic solar shading; airside heat-recovery wheel; IT server virtualization; radiant floors for improved thermal comfort; an optimized electric lighting design; a high-performance envelope with heat-mirror glazing and insulated panels. Finally, the integral ECM of the building showcased a passive negatively-airflow-integrated atrium, which considered all climatic eventualities.
To compliment the solar hot-water heating system, which was coupled with electricity-generating PV panels, additional explicit onsite renewable energy technologies included 5 Vertical Axis Wind Turbines. These were further optimized by the building architecture.
Our team wanted to ensure that the design would not only meet net-zero standards for next year, but that 50 years down the line, would still be operating at net-zero energy. To ensure this, we morphed the TMY15 weather data 50 years into the future (to 2064) and planned for the addition of two building-integrated evaporative down-draft cool towers that assist with cooling, which would keep the building operating at zero net energy despite higher cooling loads.
I was thrilled that our team won this award for Best Energy Use Results. The team worked really hard; although the IESVE is a powerful software suite with vast capabilities, the tools are only as good as the people using them, and we had an incredible team using them. They deserved it. It was a real pleasure working with such a talented group of people.
The team members were: Anna Osborne (Integral Group), Ben Brannon (Arup), Shona O’Dea (DLR Group), Megan Gunther (Affiliated Engineers, Inc.), Cory Duggin (TLC Engineering for Architecture), Greg Romanczyk (exp) and Scott West (HKS Inc.).
Our team has created a video presentation of the winning design which can be viewed at https://youtu.be/7V5LktxK5ig.
On the build up to this year’s ASHRAE Energy Modeling conference in Atlanta, ASHRAE have launched the new Lowdown Showdown modeling challenge. ASHRAE have put together a selection of teams consisting of engineers, architects, designers and energy modelers, who will be coached by software vendors including IES, as they compete to design and model a net-zero energy building.
The challenge, which started in June, will run for 3 months on the lead up to the conference that kicks off at the end of September. Each team has been given a baseline building, which they must then work on together to create a design proposal that demonstrates net zero energy performance.
The teams will present their final design on October 1st at the ASHRAE Energy Modeling conference. The “LowDown Showdown” projects will be voted on by the conference attendees and will be judged on Energy Use Results, Creativity, Innovative Workflow and Teamwork.
I’m very excited to be working with the group that ASHRAE have assigned to the IES team. ASHRAE have given us a tricky challenge but I’m confident in the talent on the team, and that they’ll overcome and surpass expectations. Our team consists of the following members:
Ben Brannon (Arup)
Anna Osborne (Integral Group)
Greg Romanczyk (exp)
Cory Duggin (TLC Engineering for Architecture)
Shona O’Dea (DLR Group)
Megan Gunther (Affiliated Engineers, Inc.)
Scott West (Jacobs)
Andrea Costa (ACE Energy Concepts)
Even though the team is spread across a massive region, I’ve been lucky enough to meet them all before. On a personal level, they are all really wonderful people and it’s a pleasure to work with them. I’m looking forward to seeing their presentation. If you are too, we’ll see you in Atlanta on October 1st!
The conference is set to be a busy week for IES. Our team will be exhibiting our latest VE solutions and we’re hosting two pre show training workshops – HVAC Loads Sizing and Energy Modeling (http://ow.ly/QNYlk) and Advanced HVAC Modeling (http://ow.ly/QNYq3).
It doesn’t stop there. My IES colleagues Nathan and Megan will also be taking part in the following presentations, so try and check them out if you’re coming to Atlanta…
IES are also hosting a welcome reception for our customers on the Wednesday evening, September 30th – details coming soon.
The dust has just about settled after another hectic Greenbuild. If you were there in person or following online, it’s clear to see that this is the biggest and most anticipated green building conference of the year for a reason — it creates an energy and atmosphere that brings out the best in our industry.
If you were following our countdown to Greenbuild on twitter you’ll know we had a lot planned across the 3 day conference in San Francisco — presentations, workshops and manning our booth were just the tip of the iceberg! The most exciting part of our time at the show for our team was the launch of IES TaP for LEED 2009, taking us a step closer to automating as much of the LEED process as we can. There’s always a buzz in the company when we launch a new product and having the opportunity to present it exclusively to attendees at Greenbuild added to it.
IES TaP, our collaboration portal for managing Green Building Ratings Online, has been further developed to support LEED 2009. IES TaP for LEED enables project administrators to manage and track the process of gathering all submittal documentation from Charrette to Certification — allowing responsibility to be allocated to the project team for each individual documentation requirement. With seamless integration into LEED Online, LEED Online Forms, and the USGBC Online Credit Library, IES TaP for LEED enhances the management of the whole LEED workflow.
Additionally, it can be used in conjunction with our VE-Navigators for LEED and ASHRAE 90.1 (LEED Energy). These tools do analysis calculations and create the required documentation via LEED online.
Our aim with IES TaP for LEED is to substantially reduce the amount of time required by users to make a LEED submission, which will then hopefully have the knock on effect of encouraging them to use some of that time to make the building a little more sustainable.
After our 9th visit to Greenbuild, it’s fantastic to see IES and our peers in the industry continually pushing ourselves to bring products like IES TaP for LEED to the industry. I wonder what new IES software development I’ll be talking about after next year’s conference…
If you want to find out more about IES TaP for LEED and how you can use it to streamline, manage and automate the LEED submission process, check out our introduction movie on YouTube or sign up to one of our free webinars here.