Building information modelling (BIM) is a method of collaborative working in construction which allows the project team and occupants to share a virtual, computerised model of the building throughout its. The technology aspects of BIM have often been emphasised, but its key difference is in the working practices that it encourages. This makes BIM a powerful ally in the battle for greater productivity, risk management and sustainability. It also helps reduce waste and cut costs.
The Royal Institute of British Architects, the Construction Project Information Committee (which provides best practice guidance on construction production information), and buildingSMART (a not-for-profit organisation supporting Open BIM) have jointly proposed a description of BIM as a starting point for discussion and refinement. They define it as: “A digital representation of physical and functional characteristics of a facility creating a shared knowledge resource for information about it forming a reliable basis for decisions during its life cycle, from earliest conception to demolition.
This is a definition which places a lot of emphasis on the technology behind BIM. However, the most crucial factor to understand about BIM is that it is not a tool, but a way of working; not a computer model but a process which requires teamworking and collaboration from design to commissioning and operation.
With this in mind, perhaps a more appropriate definition comes from the BIM Task Group, whose mission is to bring together experts from industry, government, public sector, institutes and academia to help deliver the Government’s Construction Strategy.
Although it seems to quite a recent development, BIM is not new. The concept has been around since the 1970s with the term ‘building information model’ first appearing in a 1992 academic paper. However, BIM did not gain true recognition until the early twenty first century. Current interest in it stems from the UK Government’s Construction Strategy, published at the end of May 2011, which calls for a profound change in the relationship between public authorities and the construction industry. The aim is to ensure the Government consistently achieves value for money on construction projects, and country develops the long-term social and economic infrastructure it needs.
The aim is to ensure the Government consistently achieves value for money on construction projects, and country develops the long-term social and economic infrastructure it needs. To contribute to these objectives, the Construction Strategy included Government's intention to require collaborative 3D BIM - with all project and asset information, documentation and data being electronic - on Government construction projects by 31 March, 2016. The word 'collaborative' is probably the most important element of this requirement.
A key aim of the Government’s programme for sector modernisation is to reduce the capital cost and carbon burden from the construction and operation of the built environment by 20 per cent. By using BIM methodology, Government also aims to reduce timescales, accidents and waste. Central to this ambition is the adoption of BIM processes, collaborative behaviours and technologies in a bid to unlock new, more efficient ways of working at all stages of the project life-cycle.
But BIM’s potentially powerful impact does not end with an efficiency boost. The global export market for UK construction services is conservatively estimated at £7.6 billion a year so BIM also has the potential to be a potent engine for economic growth. A Government paper published in 2012 titled Industrial Strategy: Government and Industry in Partnership, stated: “It is clear that, through its domestic programme, the UK has come a considerable distance [in the application of BIM] and has now become the centre of international focus. We have a limited window of opportunity to capitalise on this domestic success.”
The greatest potential impact of BIM methodology is that it involves a shift away from traditional working practices where each discipline works separately in ‘silos’, using different, and sometimes incompatible, software packages. Rather, BIM encourages inter-disciplinary collaboration because each party has access to the same data. A key competitive advantage of BIM therefore is its ability to promote greater transparency, communication and collaboration between suppliers and thereby reduce waste in terms of procurement, process and material through all levels of the supply chain. This coherent, integrated approach means the information losses associated with handing a project over from design team to construction team and then to building owner/operator are minimised. BIM can improve the quality of the built object as well as its reliability, consistency, cost-saving capacity and timeliness.
And each member of a project team can take advantage of distinct benefits of BIM. For example, designers can use it to examine alternative concepts without the expense of actually building the project. They can also conduct value engineering and optimise their designs. Contractors can ‘preview’ the construction process as well as preparing and co-ordinating drawings. Owners can optimise building maintenance, boost energy efficiency and monitor life cycle costs.
We can see why Government and leading contractors are keen to move forward with BIM since it offers so many potential benefits.
Although it is based on a digital system able to produce drawings, BIM is far more than computer-aided design. It can also store architectural, engineering and construction information about a project which can be shared among every member of the project team. And the dynamic digital models that BIM produces can be used to refine the design, produce ‘what-if’ scenarios, detect potential clashes, or validate performance.
BIM models associate information about asset components with geometry which allows the project team to build documentation in a more structured way. The information can be shared by different project participants and at different stages of the design, construction and operation processes. The BIM Task Group offers this example: “An engineer is able to use information sourced from the architect to prepare energy calculations or a contractor can check the co-ordination of contributions from different members of the project team. Programme and cost information can also be captured using BIM.”
Different organisations in the UK are at different stages in the implementation of BIM. Some communicate project information in a relatively unsophisticated way, simply employing 2D CAD supported by spread sheets. At the other end of the scale are those organisations that use a fully integrated collaborative project model covering all key design disciplines and based on IFC (Industry Foundation Class)-compliant data exchange standards and protocols.
The IFC data model is an open, object-based file format designed to facilitate interoperability in the architecture, engineering and construction sectors. It is not controlled by a single vendor or group of vendors. This means IFC can be used to exchange and share BIM data between applications developed by different software vendors without the software having to support numerous proprietary formats.
This model shows the different levels of BIM, and these levels are being used to describe what level a particular organisation is at in terms of adopting BIM. The Government's target is that by 2016, work on its construction projects will be a level 2 - fully collaborative 3D BIM with all project and asset information, documentation being electronic.
One of the main advantages of BIM is that it can also be used during the occupation of a building. The detailed information can be handed over to FMs who can better understand exactly what's in their building. The model can be used as a basis for planned maintenance and over the long-term in updating equipment. Surprisingly, many building owners today are not always fully aware of what equipment is in the building so this sort of information is extremely useful.
BIM does not have to operate in isolation; at its best, it is part of a bigger picture that also encompasses other strategies for collaborative and efficient working. Soft Landings is a five-stage building procurement initiative developed by research organisation BSRIA and the Usable Buildings Trust. Soft Landings encourages designers and contractors stay involved with buildings beyond their completion. This assists the client during the first months of operation and beyond by helping to fine-tune and de-bug the systems and ensure that occupiers understand how to operate their buildings for optimal effectiveness.
A development process led by the Cabinet Office has resulted in the creation of a version of Soft Landings called Government Soft Landings (GSL) which is designed to cater for the procurement needs of central Government departments. GSL has also grown out of Whitehall’s Construction Strategy, which demands that the interests of those who design and construct a building are aligned with those who subsequently use it. Like BIM, GSL will be compulsory on Government construction projects from 2016. GSL has several guiding principles including: Early engagement of end user and inclusion of one or several GSL champions on project team during the design/construction process. Commitment to aftercare post-construction from the design and construction team. Post occupancy evaluation and feedback to the design/construction team and ‘lessons learnt’ captured for future projects.
One of the key stages of BIM currently being heavily implemented due to its relative infancy is the pre-build engagement, optimising and specifying stage. During this process BIM requires a collaborative 3D model with all materials and items containing specification information with them. Mitsubishi Electric provide Autodesk Revit (most popular software for this stage) models for the majority of our equipment. They not only contain 3D geometric data but also specification data such as capacity, sound levels, refrigerant charge and electrical requirements.
Whilst not fully utilised yet, an ideal BIM building project would fully incorporate energy analysis to aid in the selection the correct solution for the building. Accurate and dynamic modelling of performance of heating, cooling and ventilation equipment within buildings goes a step further in understanding true efficiency and effectiveness. Environmental Design Solutions Ltd (EDSL) has partnered with Mitsubishi Electric UK to enable full integration of City Multi, Mr Slim, Lossnay and Ecodan products within the Tas Thermal Analysis Software. The software enables systems to be simply added to a project and the buildings performance to be modelled with the actual equipment to be installed. The software can not only size equipment but can demonstrate energy consumption and efficiency and create Part L compliance reports and Energy Performance Certificates (EPCs).
At the start of the BIM process, specification / detailed design etc we have some new products and solutions which can push to achieve the most efficient buildings
The YKM models for the UK replace the current YJM models but only for the High CoP EP range of outdoor units. The YKM is available for both the Y Series (heat pump) and the R2 (simultaneous heating and cooling) range of equipment The standard range of City Multi stays as it is (YJM)
Seasonal efficiency is becoming the new driver and units above 12kW in capacity will be affected from 2015 by the revised EuP Eco-design directive Mitsubishi are introducing the new YKM range as a starting point for the seasonal range of VRF equipment which has ben introduced in to the UK. Comfort, Control and Flexibility bring together VRF as a total integrated solution
The majority of the time A/C systems don’t run at full capacity during the working season The graphs for the cooling and heating represent the respective seasons. As the graph shows the VRF system will work at part load for the majority of the time and therefore work for more efficiently. So in the UK typically the cooling season is somewhere between 15 and 30 deg C and for the heating season between 0 and 10 deg c, Although we may get conditions outside these ranges they are rare and tend not to last more than a few days in a year.
A lot of the drivers for more seasonal efficient equipment are been driven by the some of the legislation shown For EuP the Eco-design requirements will change in 2015 to include all units above 12kW (with no upper limit) – This will affect the larger split range of equipment and have a big impact of the VRF/VRV equipment brought in to the European Market from this date. Our own Green Gateway also pushes systems that are based around real life seasonal performance
NEW Optimised Energy Saving Cooling Mode As the ambient temperature in the cooling mode reduces (i.e early morning or late afternoon) the system alters the refrigerant temperature which results in a milder off coil temperature at the indoor unit, this improves efficiency, and gives a more Comfortable Internal Condition
There are many reasons to use these energy efficient products to provide only heating to a building via the delivery method of air They offer the inverter technology and the efficiency of our split system range but as a heating only option Heating only splits are one of the most efficient solutions available to provide heat to a building.
Available to order now The heating only splits come in a range between 3.5kw to 45kw The model reference is defined as a CUHZ and is the same spec and price as the heating and cooling models The full indoor range is available for the CUHZ range of splits also A PAR-31MAA controller must be used for the heating only function to operate correctly. If other controllers are used the function cannot be guaranteed.
Controls are a critical part of controlling a buildings services and it is not just crucial to ensure the correct controls are selected at the start of the building process. It is key to ensure they are installed and commissioned correctly and then continually monitored, reported on then controlled further throughout the operation of the building to ensure they are performing as the building and its occupants require in the most efficient manner. Controls therefore are very important in all stages of the BIM process and also help with optimising with Government Soft Landings.
Provisional information for the replacement of the M-Net PAR-F27MEA controller which will be released in October 2013 The new controller has a touch screen and backlight as standard There is also a PIR occupancy sensor within the remote and a screen brightness detector When the PIR occupancy sensor detects that a room or zone is unoccupied the controller uses an internal function to reduce the energy consumption used. The remote can also detect both temperature and humidity It can control up to 16 indoor units in one group At the bottom of the controller is a colour indicator which uses lights to show what the system is doing Orange shows the unit is heating Blue shows the unit is cooling Green – Fan (or dry) Red unit in fault Further details and features will be made available for the PAR-U01 as soon as they are made available
In October we will also be adding a variance to the PAC-YT52CRA called the PAC-YT52CRAS Same flush fitting, backlight and Mode button is available However the louvre button has been removed for the main purpose of hotel bedrooms that have ducted fan coils fitted where a louvre button is not required. The design is a silver frame with a black face. This is for the UK Market requirements.
MELCloud is a new Cloud based solution for controlling your Mitsubishi Electric Air Conditioning systems either locally or remotely by PC, Tablet or Smartphone via the Internet. The MELCloud service can be accessed by a wide range of the latest Personal Computers (PC), Tablets and Smartphones from the leading manufacturers. The application detects which device you are using and dynamically adapts the display to maximise the screen available. All the main mobile device manufacturers are supported by MELCloud, either by dedicated applications which can be downloaded free of charge from the various App stores or if your device is not supported by App, then the MELCloud Web application will work on most devices via one of the latest Internet browsers from Microsoft, Google, Apple and others. MELCloud allows you to take control of your Mitsubishi Electric systems from anywhere in the world as long as you have Internet access. So forgetting to turn off your Air Conditioning when you are away on holiday is no longer a problem. MELCloud has been designed for a wide range of users from single users with single Air Conditioning systems in a single building, up to larger user who may have multiple properties and multiple systems that they wish to monitor and control. Whichever type of user you are, MELCloud can provide you with required control and access you need for modern living.
The MELCloud includes such features as: Unit control - allowing the selection of system on/off, operation mode, fan speed, vane (both horizontal and vertical), room and set temperatures. A reports section lists all the available reports that you can see and access. This is where more detailed information regarding the operation and status of your equipment will be shown, such as error logs. Live Local Weather information shows the current and future weather predictions for the location via a third party weather data service. Frost Protection allows you to set a minimum room temperature that if detected, will then initiate the system to switch on and to warm the room to protect the room contents or building fabric from a low temperature. Timer Function allows you to set a control event condition based on a 7 day weekly schedule. A Holiday Mode allows you to tell the MELCloud service about any period of non use which you want to set to prevent waste of energy or unauthorised use of the system whilst you are not at the property
MELCloud – stage 1 a/c (june 2013) – We have a compatible list of the M Series and Mr Slim units that can be used on MELCloud (to be issued shortly) stage 2 Ecodan will be available - End 2013 stage 3 Finally VRF – likely to be early 2014
You will need to purchase a WiFi Interface (MAC-557IF-E) to connect your system to MELCloud, You will also need a compatible Mitsubishi Electric system to connect to the MELCloud service, there is a list of compatible models available from us. Compatible systems will have a CN105 terminal which the WiFi Interface MAC-557IF-E can be connected to. Please contact your local Mitsubishi Electric branch, Sales Representative or Distributor for more information on how to purchase this.
City Multi VRF
VRF market is always developing and
pushing new boundaries
Mitsubishi Electric remain at the forefront
Introducing YKM, the highest efficiency
air source VRF system, optimised for
EP (High CoP) Models ONLY
Size 200 – 900
Size 200 - 700
City Multi VRF
The Complete Integrated Solution
Why Focus on
For the majority of the heating and cooling
season the VRF system runs at part load
Comfort & Control
Energy Saving Cooling Mode Refrigerant Temp Control
Optimal control between capacity, efficiency & comfort
Target Evaporating Temperature 0°C
Target Evaporating Temperature 4°C
Mild off coil temperature
Comfortable Internal Condition
Comfortable Internal Condition
Outside 30°C Decrease ambient temperature Outside 20°C
Heating Only Solutions
There are many reasons to use these energy efficient
products to provide only heating to a building via the
delivery method of air
− Many buildings do not need cooling, for example schools and
− Heat pump air conditioning systems offer a simple, flexible and
efficient method of delivering heat to a building
− Help with Part L Compliance by removing all power consumption
related to cooling
Heating Only Solutions
Heating Only Option
3.5kW to 45kW
CUHZ-ZRP Product Reference
Same Spec/Price as Heating and Cool
Full Indoor Range Available
Must use PAR-31MAA controller to function
Replacement for the PAR-F27MEA
First Small Touch Screen Controller
Built in PIR Occupancy Sensor
Screen Brightness Detector
Built in Temperature & Humidity
- Colour Indicator
- Back Lit
- No Louvre Button
- Available Oct 2013
- UK Only
- Silver/Black Design
- Cloud Based Control
- PC, Tablet or Smartphone
- Apple, Android, Windows or Blackberry
- Remote Control
- Multiple Users
- Unit Control
- Localised Weather Information
- Frost Protection
- 7 day Multi Programmable Timer and
- Phase 1 – M Series and Mr Slim
- Phase 2 - Ecodan
- Phase 3 – City Multi VRF
MELCloud - MAC-557IF-E
The Mitsubishi Electric WiFi Interface is
designed for communication to the
Mitsubishi Electric MELCloud service