Big Building Plant Room automated Sub-metering and monitoring – PFI London Hospital
Large infrastructure sites such as hospitals can use significant amounts of energy, including gas and water; in the generation of thermal energy for provision of heating (LTHW) and Hot Water (HWS). One such case was an NHS hospital located in London. The appointed Hard FM company had been contracted to manage the facilities under a PFI contract, provide KPI information on energy and water use as well as recommendations on energy efficiency as part of their management processes.
The acute services and out-patient hospital serves one of Britain’s most diverse, fastest growing and youngest populations. The organisation is firmly focused on meeting the needs and priorities of the local community. The hospital offers a range of local services including a 24 hour Emergency Department, an Urgent Care Centre, a modern purpose built outpatient facility, Elderly Care unit and local stroke unit.
The need for sub-metering
Site Facilities Management (FM) contacted PA Energy and at short notice required a comprehensive proposal to review the all fuels category metering in 3 blocks, identify problems with metering, provide a resolution fix and to also to automatically collect utility information for the provision of management reports. The existing BMS System was not suitable for this purpose. PA Energy was awarded the project for clarity of program to resolve metering problems, benefits of the REDSTS Cloud/web based metering data service that would also include the monitoring of main building electricity, gas, thermal energy (heat/chilled water) and water. The economic model and company’s experience with other similar site types was also seen as advantageous.
Delivery and sequence of the sub-metering arrangement
– Determine the energy and water uses on site and enhance the existing metering arrangement; where possible utilising existing metering
– Resolve issues with the existing CHW (chilled water services), LTHW (heating) and HWS (hot water) meters to allow the FM to read the
meters to provide Key Performance Information (KPI) to its client.
– Supply and fit remote metering data collection to provide automated reporting for electricity and gas.
– Install new heat and water services metering in a 2-level block including hospital-wide food and beverage catering unit.
PA Energy supplied and commissioned new LTHW, HWS and CHW metering using mag-flow technology as well as ultrasonic flow sensors with thermal integrators to calculate energy, wireless data monitoring and commissioned into the existing meters. Electricity , gas and cold water metering data outputs were also commissioned in.
Because of stringent health and safety considerations in clinical services buildings, PA Energy had to carefully assess risk impact of the works in all areas including plant rooms and critical services switchrooms. PA Energy is accredited by Safe Contractor.
Benefits of the MeterWorks, EnerWorks & DataWorks
The submetering system now allows the site team to supply automated monthly energy demand reports as part of its mandatory PFI contractual requirements, provide suggestions on energy efficiency improvements, measure those initiatives and identify which pieces of plant and areas are consuming significant amounts of energy allowing the Hard FM to better to engage with technical operation on energy utilisation and optimisation.
LTHW/HWS/CHW flow rates are tracked to ensure that minimum flow is met to operate plate heat exchangers at optimum and that HWS temperatures are kept over 60’C; The primary method used to control the risk from Legionella is water temperature control.
The system also alerts the site to water leaks or abnormal use of water and gas.
About PA Energy
Led by Percy Albuquerque, the firm has years of experience with a high quality client base in the public sector and blue chip companies who trust us with their critical services buildings and sites. Our clients often come to us through word of mouth or because no one else has been able to fix their problem. Being independent we use the best technology and people for client situations.
PA-Energy designs metering arrangement in accordance with CIBSE TM39 guidance, installs and maintain water, gas, electricity, oil and heat energy sub-meters and remote monitoring for fiscal and sub-meters. This includes supply and installation of meter accessories such as pulse heads, pulse splitters, enclosures, current transformers/sensors and assemblies. We also repair/maintain meters and can offer calibration services and Independent Technical Expert (ITE) service.
learn about sub-metering www.submetering.weebly.com
Tel: 0207 193 7701
PA Energy London, Chester House, Kennington Park Business Centre, London SW9 6DE
For more information contact:
Iris Harris, Office Administrator
telephone: 020 7193 7701 | email: firstname.lastname@example.org | website: www.pa-energy.london
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All PA Energy London Case Studies
- Big Building Plant Room automated Sub-metering and monitoring – PFI London Hospital
- Large infrastructure sites such as hospitals can use significant amounts of energy, including gas and water; in the generation of thermal energy for provision of heating (LTHW) and Hot Water (HWS). | 26th March 2018
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