Modern Building Services

MODERN BUILDING SERVICES MARCH 2022 31 FEATURE VERTICAL FOCUS natural daylight and perimeter areas may not require artificial light, thereby optimising building energy use. The systemuses an infra-red signal for communication. As the infrared signal can only travel threemetres, each luminaire will only communicate with its direct neighbour. When occupancy is detected, the luminaire will energise the appropriate luminaires. Once occupancy is no longer detected, the luminaire will dim for a pre-set time and then switch off automatically. As the occupant travels, and a travel pattern is established, this transmission process continues ensuring the minimum number of luminaires operate, further reducing building energy use. The system is quick and simple to install, with only a permanent, live electrical supply required for each luminaire, providing building owners with a cost-effective and efficient lighting solution. Furthermore, the system commissioning only requires a simple ‘grouping’ setup, which is achieved by a mobile app. This technology also helps to futureproof spaces. If the building use changes through the addition of cellular offices, the luminaires contained within these areas will no longer communicate with other luminaires outside the partition area. Wireless kinetic switches can be used within the offices eliminating the need for additional wiring and, again, the use of a mobile app will allow separate groups to be created if needed. Working smarter Creating more flexible and efficient office space will fuel the need for smart technology. Devices and apps that can monitor and control the working environment are continually evolving, helping to create spaces that are tailored to the needs of tenants. Ensuring the correct infrastructure is in place to integrate smart technologies is key to futureproofing office space and saving time and costs further down the line. This can be achieved through technology which allows multiple smart devices to be integrated into one central control. Mechanical considerations As far as mechanical services are concerned, the biggest shift is in line with the Government’s plans to achieve net zero in the UK by 2050. This is increasing the specification of air source heat pumps, which over the long term, provide cost effective and environmentally-friendly heating for air and water. The cost of installing an air source heat pump will depend on the size of the office but if designed correctly, will significantly reduce energy bills and require minimal maintenance. Further efficiencies can be gained by integrating solar panels into the M&E design. In addition, there is an increasing focus on how air quality can be improved in offices post pandemic. As recently highlighted by Professor ChrisWhitty at the Confederation of British Industry (CBI) conference, improving the ventilation of workspaces is becoming more important than ever before. Investing in appropriate HVAC systems, which reduce the re- circulation of air within a building, is key to reducing the potential future impact of viruses such as Covid-19. Boosting efficiency Making the interfaces between electrical andmechanical services more efficient is another role of a specialist contractor. Traditionally, an officemay have had one system for controlling the lights and another for mechanical elements such as thermostats and humidity sensors. These can now be integrated using one control protocol. The use of a universal bus control cable reduces onsite costs and control accessories. Lighting and temperature control, CO2 and humidity monitors plus other environmental controls can be grouped together in one room control panel. In addition to the significant cost savings on installation, the systemmeans that building owners and facility managers can easily and effectively control the M&E services. Fit for the future As office design continues to evolve, so must the services of M&E contractors. Keeping up with the pace of change requires specialist skills and understanding of how building services can be designed and installed to best meet people’s changing needs. Solutions must be tailored to the building’s use with an increasing focus on elements which can enhance, health, productivity and efficiency now and in many years to come.