Electrical Contracting News (ECN) August 2016 - Page 45

HVAC consistently and effectively tested, thereby reinforcing predictive maintenance. Effectively managing heating, ventilating, and air conditioning (HVAC) solutions is the foundation for taking control of energy usage in a building, and optimising environments for enhanced performance and energy efficiency. In hospitals they are a vital part of the infrastructure and very high standards of design and operation are mandated as part of the government’s Health Technical Memorandum 00. HVAC controls connect to and are controlled by Building Management Systems (BMS) and respond to environmental conditions such as temperature, moisture and CO2. In hospitals, certain types of rooms have specialist HVAC pressure requirements. For example, operating rooms and ICUs may employ a positive pressure regime to help to reduce the risk of airborne infection, while isolation rooms may require negative pressure to prevent the spread of airborne pathogens. As HVAC is often responsible for over 40 per cent of energy usage in any given building, in hospitals particularly, it is one of the areas where the most savings can be made. These savings vary depending on the equipment being controlled as well as the existing state of energy conservation technologies. Experience suggests that savings of between 15-30 per cent are achievable in most cases. As an example, Schneider Electric is working with Musgrove Park Hospital, “ The challenges faced by healthcare providers means that ensuring operational efficiency is vital. ACTING AS A CENTRAL NERVOUS SYSTEM FOR THE HOSPITAL AN INTELLIGENT TECHNOLOGY INFRASTRUCTURE INTEGRATES TRADITIONALLY DISPARATE SYSTEMS. Schneider Electric is working with Musgrove Park Hospital, part of the Taunton and Somerset NHS Foundation Trust, to implement 180 technical energy saving solutions. intelligence, leading to more effective use of all resources. Additionally, actionable information and real insight provided by tools like Schneider Electric’s Power Monitoring Expert help manage power quality performance, and improve financial performance, energy availability and patient safety in healthcare facilities. Constant power monitoring that provides real time status is vital to ensure network recovery time is reduced in case of a fault. This includes identifying and focusing on the most sensitive parts of the network as well as ensuring that standby system is part of the Taunton and Somerset NHS Foundation Trust to implement 180 technical energy saving solutions. These will save the hospital £17m over 20 years. This is as a result of reducing the hospitals’ energy consumption by more than 40 per cent. One part of the project was a full overhaul of the HVAC system including variable speed drives and control on air handling units and pumps. The upgrades included free cooling alterations to remove mechanical cooling requirements. SPECIAL FEATURE in place, which monitors critical power availability, power quality and schedules in maintenance at the most appropriate time, along with performing real time diagnostics in the case of a power failure. Recent developments in Building Automation System open protocol communications technology allow all of the critical systems within a hospital, like HVAC, lighting, security and electrical power to communicate with one another in a more intelligent way, both improving the healing environment for patients and allowing for more efficient facilities management. Often a BMS is installed and commissioned, with predicted parameters that are suitable at that time. But, whilst hospitals are only built once, over time the use of the building and the services delivered within that building will inevitably change. Additions to the building or changes in its configuration without major investment to upgrade environmental systems and controls at Power Hospitals demand consistent and constantly available power to ensure safe, efficient and cost effective operations. Although the installation and management of critical power environments are both complicated and costly, losing the power supply simply isn’t an option when patients’ lives are on the line. Hospitals are often directly connected to electricity substations to minimise the risk of power cuts. Nonetheless, it’s vital that hospitals have a power outage solution 45 44-46 HVAC – Schneider.indd 45 18/07/2016 10:41