Entry Form Lighting for Building Performance Award

Transcription

1 Entry Form Lighting for Building Performance Award This award recognises the importance of natural lightscapes within the built environment and their impact on energy consumption - it is recognised that 30-40% of a commercial building s energy consumption is its lighting. This will include delivering the required illumination levels (on all relevant surfaces not just the working plane), lighting quality and working conditions for building users or occupants, and demonstrating substantially reduced energy consumption and carbon emissions. Entries should be for lighting systems or innovative lighting designs first commissioned or launched between 1 July 2012 to 30 June Please complete the entry form below. The headings reflect the judging criteria and the judges will be looking for you to provide the relevant information under each heading. Submission instructions 1. Complete and save this document 2. Click here to submit your entry online 3. Complete the required fields and follow the instructions on the online entry system 4. Upload your entry form and supporting documents 5. Click finish to submit your entry If you have any questions then please contact us on or by to lois.hunt@redactive.co.uk. Entrant details Full name Andrew Bissell Organisation Cundall Light4 Job title Lighting Director Project details Project name As you wish for the lighting system or design to be referred to throughout the competition. Cundall Birmingham Project address 4 th Floor, Cathedral Court, 15 Colmore Row, Birmingham, B3 2BH Organisations Please provide the names of all organisations that you would like to be credited in your entry. Please ensure that the company names you list are accurate as we will be reproducing these on screen and in print. It is essential that you have the consent of all those named below to include them. Cundall, Cundall Light4, Peter Grant Architects, Overbury Summary Please provide a synopsis of the lighting system or design and its building performance, low carbon and energy efficiency objectives. Cundall Light4 created a lighting design solution for the new 7000sqft office fit out for the Cundall Birmingham office. Andrew Bissell, Lighting Director, wanted to create a scheme that focused on the occupants, the tasks they needed to undertake, the lighting control and adopt the latest lighting guidance. The lighting scheme delivers a low connected load of just over 6W/m2 for 100% light output. This is up to 50% more energy efficient than many standard offices. This does not take into consideration the lighting control system which is currently set to ~75% and will dim further or switch off when daylight or absence is detected. The current operating load is just under 4W/m2. Entry criteria Please outline how your entry meets each of the entry criteria judges will be looking for information in each of the sections when assessing the entries. Documents, charts or photos should be referenced and included in your supporting documents.

2 Innovation in design, technology and/or application The design brief included : Focus on the staff, their needs, the tasks they undertake and where that will occur Provide a co-ordinated design to match the best examples out there Practice what we preach. Use the latest guides and adopt the latest research. Minimise energy consumption The innovation is very much related to how we have changed the view of the landlord and agent as to how an office should be lit. Whilst we have been able to light the space to suit our own needs we have also had to continually demonstrate to the landlord and their agents that if we move out, the office will be a desireable, functional and cost effective space for another tenant to move in to. Historically Landlords have imposed significant cost penalties against clients who fit out an office in order to change the space back to a spec office, or, they simply refuse to allow such fit out and insist on a more generic blanket array of lights. In this case the result is that the tenant wants to see more of the office spaces lit the way we have done in our space and there is no clause or cost to Cundall should they leave the building in relation to changing the lighting design. Essentially the landlord and agents see this space as the way forward for office lighting design. They are confident they could easily re-let the space. Design intent, including a justification for the energy and carbon cost of scrapping existing luminaires Cundall set out to achieve a SKA Gold rating which is a measurement of the environmental impact and energy efficiency of a refurbished office space. Following completion of the project the refurbishment was awarded a SKA Gold Label. A significant aspect of the SKA rating is the efficiency of the office lighting and the controls and re-use of existing equipment. When we viewed the existing office space we found the light fittings were of the recessed 600x600 basket type with twin 40W PL lamps. The 40W PL lamp is a particularly poor performing fluorescent and a search of an old catalogue showed the fitting had an LOR of 58%. The luminaires were switched and not dimmable and therefore would not allow us to maximize energy savings through daylight dimming. The inefficiency, lamp type and age of the existing fittings justified the specification of new fittings which also then opened up the opportunity to remove the ceiling altogether and make use of the height of the space. Appropriateness of the lighting system or design for the intended application(s) First and foremost the drive was to get as many of the staff a view out and access to sunlight and daylight. The difficulty here was that the location of the lift core meant the most secure and logical flow for staff and visitors would be that staff turned left from the lifts and visitors turned right. As such we do have a slight compromise in that some of the best daylit spaces and views are meeting rooms rather than desk areas. With that said, the majority of staff are sat around the perimeter of the space and as such have views out and access to daylight. Where we do have staff in the middle of the space they are the most active out and about members such as partners and site engineers whose time in the office is limited. Equally the lighting level is higher in the centre of the space to manage the balance of light from the perimeter to the middle. From the outset we were adamant the design was about the space working for the staff and therefore the focus was on the detail design of the staff workstations. The age of the existing equipment meant that pretty much everything had to be ripped out of the space which left us with a blank canvas. Given that opportunity we agreed that maintaining the sense of height was important; focusing on the work areas as opposed a blanket of lights was essential; dealing with noise, both the transfer of telephone calls and the silence of open plan, and finally we wanted a well co-ordinated, neat and professional appearance. The design team created a standard desk arrangement which included a co-ordinated acoustic panel above the desks, separate suspended lights (with integral emergency and PIRs), centralised plant hidden above the acoustic panel and evenly distributed and symmetrically arranged supply and return

3 grills. This product was then distributed through the office area and appropriate interconnections made between systems. From each seating position we then recorded what each person would see, are they looking towards a window? Can they see the wall in the distance behind the monitors? How many acoustic panels can they see? Etc. The answers to these questions led to the introduction of a small number of spotlights to highlight walls or images. With the task area lit, the vertical surfaces lit where required, the acoustic panels uplit, the staff work area was complete. The lack of lighting to the corridor, other than reflected light, is unusual at first but has no negative impact on working in the office and quite the opposite in that the focus is very much on the desk and task in hand. The office area is mainly illuminated with T5 ECO lamps. We did consider LED for the area but with the requirement for indirect and direct light the nature of the fluorescent lamp meant we could have the right level of light distributed comfortably in the right direction and it is very efficient in the Fagerhult Avion Lamell fitting. The lighting control throughout the office has been kept simple and as automated as possible. PIR s will bring the lights on if there is presence detection and a lack of natural light. Each group of desks are paired to the adjacent group so there is never the scenario of feeling completely isolated with only your own pitch illuminated. A handheld controller was purchased to allow individual control of each row of fittings should individuals need more or less light. The day one scenario provided 700 Lux on the desks in the centre of the room and 400 Lux on the perimeter desks. This has been adjusted by the end users and we are no recording ~600 Lux on the central desks and ~300 Lux on the perimeter desks. The meeting rooms did not really offer any challenges. They were well daylit and had excellent views. Recessed and where required the odd pendant was installed for the winter months, however we knew the lighting would generally not be used for most of the year. The lighting control is switch on / manual off, with a non-latching switch to allow dimming should it be required. Outside the meeting rooms are waiting areas / informal meeting areas. In this zone we simply wanted enough light to get people to the meeting room door and also sit and have a chat. Therefore 3W LED downlights and Ikea free standing floor lamps have been used. The reception area was again treated as a series of tasks, i.e. The desk surface, the Cundall logo on the wall, the art, come flowers, come awards shelf and of course the vertical surfaces which the receptionist will need illuminating. The location of the reception (in the middle of the office) and the viewing direction of the receptionist (away from the window) meant that the lights would be needed at all times the office was occupied, therefore they are connected to manual switches adjacent to the door. For the reception lighting, LED s were selected as the type of fittings are predominantly spotlights and LED is good at providing efficient directional lighting. Behind reception is our café / expansion area. The lighting here matches the office yet at the same time the has a more relaxed feel due to the furniture. The tenancy agreement requires this area to be fitted out with office lighting as per the main office when / if we leave. Therefore rather than have café lighting which we may need to replace or even throw away in the future we decided to compromise and match the office lighting. With all of the services on display, the lighting design went hand in hand with all other disciplines including the acoustics, mechanical design and interior design. Improvement over existing systems or designs in terms of performance, energy efficiency and carbon saving Another tenant in the same building recently refurbished the 2 nd floor. The total connected load of the 2 nd floor office lighting is 11W / m2. There is no information on the operating performance although during a visit it was noted that all lights were on. Hoare Lea s Award winning office has an operating load of 7.45W/m2 (Lighting Journal October 2013). The total connected load for the Cundall office is just over 6W/m2, the current operating load is just under 4W/m2. 2 nd Floor Cathedral Square = 11W/m2 Connected

4 Hoare Lea Western Transit = 7.45W/m2 Operating Load Cundall Birmingham 6 th Floor = 4W/m2 Operating Load We are still monitoring the operational lighting load and therefore whilst we are quoting just under 4W/m2 at the moment we expect that to rise to nearly 5W/m2 over the winter months. Occupant satisfaction and feedback Rob Van Zyl Partner of Cundall Birmingham says, The innovative lighting design for our new office has made Cundall Birmingham an exciting place to work. Not only has staff morale increased and energy consumption decreased, clients have commented on how bright and vibrant the new place looks. Cundall Light4 have done a fantastic job of encompassing everyone s expectations to make a truly wonderful office environment. Mitigation of the environmental impact of production The quantity of luminaires used in the office is less than would normally be used as we have been selective about what we light. In the office areas we have used Fagerhult luminaires which are manufacutrered in a factory which uses 100% hydro electric power and therefore produces no CO2 from energy consumption. For the non office areas we have generally used small spotlights and downlights which have significantly less metal component than say a 600x600 recessed luminaire. All existing equipment which was stripped out was recycled in accordance with the legislative and SKA requirements. Research, testing and development Cundall Light4 used the latest research in lighting for offices. This research has shown how people need varying light levels across a space to allow the eye to focus and relax. It also shows the ceiling to be well illuminated to give the same impression that we see when we are out doors under a bright sky. Cundall Light4 used the acoustic arrangement panels to provide a sense of sky and deliver glare free, comfortable light to the working panel. This approach was also used in the meeting rooms, kitchens and reception. What is different about the office space is that between the key functional spaces where people are working such as the meeting rooms or at the desks, Cundall Light4 have not positioned many and in some places any additional lights. This means some corridor spaces if you measured them with a light meter would read as dark spaces. However with the acoustic ceiling rafts illuminated and the vertical surfaces illuminated, the space never visually appears dark even if your feet are walking on numerically dark areas. The lighting system was set up on day one with what was felt the right lighting levels, however the staff are encouraged to provide feedback on what is suitable for themselves and to date there has been one visit to change the lighting levels, interestingly the lighting levels were reduced. Use of recycled materials and recyclability When specifying the luminaires and in particular the LED luminaires we requested the technical details to ascertain that the luminaires could be broken down into component parts such that the heat sink, body and PCB could be easily separated and therefore recycled / disposed of correctly. Performance in practical operation as well as factory or laboratory test results The connected load is just over 6W/m2 with an operating load of just under 4W/m2 at the moment. We are continuing to monitor this. Clear technical information explaining the system for installers and operators, and evidence of engagement with installers and users to ensure the system is effectively delivered and used With the project being our own space we were very hands on in the design and in detailing the installation on site. As such we do not have the usual series of technical drawings. Operation and maintenance information With the project being our own office space we are taking the opourtunity to try and use BIM to capture the operating and maintenance requirements. This is on going and quite a learning curve.

5 Further Information Please provide any further information, evidence or references that you would like to include in your entry. Click here to enter text. Supporting Documents Entries should include supporting documents or evidence to supplement this written part of the submission. All supporting documents should be collated into one PDF document for upload. Please explain in a list or one or two sentences what your supporting documents add to your submission. The supporting documents include project imagery that will show the finished office environment.