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Energy Management


LED lighting – a new foundation for power management


ByRuss Sharer, Vice President of Global Marketing and Business Development for Fulham, manufacturer of innovative and energy-efficient lighting sub-systems and components for lighting manufacturers worldwide.


alternatives for any power connected device. Even the smallest reduction in energy consumption can result in substantial savings. However, in order to optimise energy use, you need appropriate tools to: ●1. Monitor energy usage. You can’t manage what you don’t measure, and by measuring changes in power consumption as well as usage over time you can identify where you have reduced usage as well as have the best opportunities to save. ●2. Implement energy controls to optimise energy use. Once you identify the energy hogs, you need a strategy to control them, ideally automatically, to reduce energy consumption. An important part of lower energy usage has become the implementation of LED lighting, and now it is becoming a central component for power metering as well. Installing or retrofitting with LED lighting will realise immediate and substantial energy savings on its own, but when you use LED lighting with controls as a foundation for power metering the energy savings multiply.


E


Increasing demand for LED savings Research shows that lighting and heating and cooling are responsible for over 70 percent of the energy consumed in commercial buildings. Replacing incandescent or fluorescent lighting with LED luminaires can reduce lighting energy costs by as much as 75 percent, which is why contractors are installing LEDs for both new construction and building retrofits. Changes in government regulations also are driving sales of energy- efficient LED lighting. The UK’s Green Building Council, for example, points to LED retrofits to deliver a substantial return on investment for sustainable building projects. In the United States, legislation such as California’s Title 24 now requires construction and remodelling projects to use components that conform to strict energy standards. As a result, electricians and contractors are using more LED lighting components. Many of them are even adopting business models that match their fees to the associated savings from reduced energy costs. Increasingly, intelligent LED components with embedded


programmability are also providing the means to monitor and control energy use.


Installing or retrofitting with


LED lighting will realise immediate and substantial energy savings on its own, but when you use LED lighting with controls as a


foundation for power metering the energy savings multiply.


46 | electrical wholesalerNovember 2018


A series of power meters for a single building in Calcutta – where the problem of power theft can be solved by power metering.


Intelligent LED drivers deliver more LED drivers have been steadily improving over the years and now many include intelligent controls capability. Taking advantage of the embedded programmability in LED microcontrollers, drivers can be customised to deliver specific lighting hues and intensities, which can be invaluable for applications such as matching installed LED luminaires. You also can program LEDs to control power consumptions and heat generation. Gathering power information at the luminaire level is one thing, but it has


limited value unless you can consolidate that data to get a picture of an entire system or building. You need to add communications to intelligent drivers to consolidate control data. Connecting LED luminaires into a network fabric can be done either using wired or wireless connections. DALI has been used for many years for simple lighting control, and with DALI 2.0 the standards body added energy measurement tools. Some LED vendors expect Power over Ethernet (PoE) to provide a hard-


wired solution, allowing installers to connect LED lighting at the same time they install computer cable. This may work for new buildings, but ripping out existing wiring and installing Category 6 cable for lighting as part of a retrofit may prove cost prohibitive. That’s why most LED luminaire vendors are banking on wireless connectivity to create an ecosystem of LED control sensors. Bluetooth mesh in particular is a viable solution for wireless lighting


controls and building an infrastructure for Internet of Things (IoT) data traffic. Although Bluetooth was originally created for device-to-device communications, Bluetooth mesh provides a highly reliable broadcast networking system with built-in failover. Devices can be added or removed from the mesh without disrupting communications, and it can support two-way communications to issue commands as well as monitor devices.


www.ewnews.co.uk


nergy continues to be the biggest operating expense for commercial building owners, and contractors and electricians are under increasing pressure to come up with lower energy


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