berkeleycontrolsuk.com
THE DRIVING FORCE
IN ENERGY MANAGEMENT PROPOSAL FOR
building energy management systems
in this document berkeley controls executive summary
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I — introduction
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1.1
Objective
1.2 Process
2 — system integration 2.1
Store Architecture
2.2
Trade Lighting
2.3
Window / Signage Lighting
2.4
Air Conditioning Units
2.5
Entrance Door Heaters
2.6
Heat Recovery Main Ventilation Fans
2.7
General Extract Fans
2.8
Toilet Fans
2.9
Gas Appliances
3 — store interation facility 3.1
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Electrical Power Meter
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Berkeley Controls BEMS Solution Proposal / The Halfords Group
4 — bureau facility 4.1
Bureau Monitoring
4.2
Alarm Reporting
4.3
Bureau Alterations
4.4
System Interrogation
4.5
Software Engineering Upgrades
4.6
Technical Help Desk
5 — system evolution 5.1
Bureau Connection
5.2
System Expansion
6 — energy savings
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6.1 Conclusion
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berkeley controls We deliver Building Management System solutions to new build, refurbishment and projects ranging in value from ÂŁ5k to ÂŁ1M. Currently, we employ management and engineering staff, further complimented by a loyal specialist supply chain.
Berkeley also provide energy saving surveys and solutions for clients who are looking to reduce their carbon foot print. We take personal responsibility for achieving our objectives. We do what we say we shall do. We do what is right, not merely what is expected. We act with openness, integrity and trust.
Berkeley Controls provide a dedicated bureau service for multi-site retail customers for monitoring and controlling the electrical, mechanical and comfort cooling systems. Our team of mechanical and electrical engineers complete all mechanical, electrical and fabric works on site, including minor builders’ fabric works and we will liaise with other trades to ensure we undertake a seamless installation. We provide continuous training to our staff where necessary to ensure current regulations are met, training.
Part of
Our processes and procedures are fully documented and in place to manage the interface, communications and, most importantly, safety of all parties. delivering engineering excellence
providing specialist BEMS retail integrated solutions 4
Berkeley Controls BEMS Solution Proposal / The Halfords Group
executive summary We thank you for the opportunity to work with the Halfords Group and develop a seamless approach to monitor and control your HVAC and lighting. This approach will focus on the main HVAC equipment installed at Halfords. The data generated by our simple installed equipment needs to be monitored, analysed and acted upon in order to be effective. This can be achieved via our bureau facility based in Bristol. Our energy management solutions can be configured and adapted to suit your needs. There are no limits to the number of information points or geographical locations that can be connected to the system, making it an ideal central energy monitoring and management tool for multi-site operators. Typically our payback periods are less than 2 years with: • Reduced energy costs of up to 25%; • Lower maintenance costs; • Extended equipment lifetime through efficient operation; • Multi-building energy performance benchmarking; • Real-time energy performance analysis and dashboard display; • Energy alerts in real time; • Increased public and staff awareness; • Maintained occupancy comfort levels; • Reduced carbon emissions; The Berkeley Controls Bureau provides a complete service tailored to your requirements, to ensure the entire heating, ventilating, air conditioning and lighting systems are operating to their most efficient control and energy parameters. Allowing the Berkeley Controls Bureau provider to become your remote facilities manager. In the age of ESOS compliance and Energy saving targets and reductions in the carbon emissions, the Berkeley Controls Bureau model is a proven, cost effective way of delivery on these requirements.
building energy management systems
A major advantage of systems remotely reporting to a bureau, allows our operators to contact the relevant maintenance contractor with correct information on the piece of equipment that has failed. Utilising the option of on-site networking to other equipment such as AC units, faults can be identified and we can provide the correct fault code to the engineer so that they can attend site with the correct part and in doing so reduce the site time and cost. Remote access to the software within the controller’s allows bureau staff to check the temperatures and their settings (set points) and alter them accordingly in line with the guidance and authorisation of you, the client. With the ability to evaluate and remotely monitor the site specific conditions this will ensure set points are only adjusted if there is real operational need. The constant adjustment of set points leads to energy wastage, by being able to evaluate the information of all aspects of site conditions remotely allows us to investigate and interrogate the system as whole, in many case the fault lies with a failure of equipment, the adjustment of the set point has no operational benefit. If your need is to meet energy targets, or to generate new efficient environmental control strategies then discussions with our specialist engineering team would allow the opportunity for a control plan to be evolved and put into action, so you can relax in the knowledge that your system is being controlled and securely monitored with your best interests in mind. Remote access allows you the freedom to pass responsibility for energy control and monitoring to an engineering team that has the ability to react to situations, keeping you informed and with the knowledge that your energy costs are kept to a maintained target. We look forward to working with Halfords and hope you enjoy reviewing our proposal.
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total control & saving you money 6
Berkeley Controls BEMS Solution Proposal / The Halfords Group
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1 introduction 1.1 Objective A Building Energy Management System (BEMS) will be supplied, configured and commissioned by Berkeley Controls to provide control of the store heating and ventilation plant and lighting. As a result, enhanced climate control of the store will be achieved as well as substantial savings on energy and maintenance.
Survey
Project Design
System Installation
1.2 Process The following turnkey process will be carried out to ensure a smooth transition from project start to the system being fully operational:-
Programme Controller
Track Performance
Analyse
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Berkeley Controls BEMS Solution Proposal / The Halfords Group
2 system integration 2.1 Trade Lighting The trading lights operate at full lighting level on the Mode Lighting System via a 10 channel switch. The lighting will be activated when the intruder alarm is unset. The building lights will be off when the intruder alarm is set.
2.2 Window / Signage Lighting The window/Signage lights operate at full lighting level on the BEMS Window time clock being active. The window/ Signage lights arte switched off when BEMS Window time clock is inactive.
We can potentially operate a 1/3 2/3 basis via a RS232 connection in the Mode Lighting panel. This is only available on certain Mode products.
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2 system integration 2.3 Intruder Alarm The intruder alarm is monitored via the BEMS. The heating and ventilation plant is disabled when the intruder alarm is set as well as the lighting.
2.4 Air Conditioning Units The air conditioning units are interfaced into the BEMS. The BEMS then optimises the running of the units to provide an energy efficient operation as dictated by the showroom temperature as monitored on the return air temperature sensors located on the air conditioning units or local air temperature sensors The air conditioning units operate during the BEMS trading time clock being active no fire alarm condition and the intruder alarm being unset. The BEMS integrate to the following air conditioning unit functions:-
Note: Both air conditioning units operate on their respective temperature sensors. The above description of operation may alter slightly dependant on the manufacturer of the units installed.
2.5 Entrance Door Heaters The entrance door heaters are interfaced into the BEMS. The BEMS optimises the running of the units to provide an energy efficient operation as dictated by the showroom temperature (i.e. the main heating will be provided by the showroom air conditioning unit while the door heater will operate the fan pending the season. The heating of the door heater will then be switched on if the respective showroom temperature cannot be maintained by the AC unit alone – pending the season). The entrance door heaters operates during the BEMS trading time clock being active no fire alarm condition and the intruder alarm being unset.
• Unit on/off • Temperature set point • Return air temperature • Fault Code
2.6 Heat Recovery Main Ventilation Fans
• Mode (Heating/Cooling/Fan Only) • Louvre position • Fan Speed
The ventilation fans are interfaced into the BEMS. The BEMS then optimises the running of the fans to provide an energy efficient operation as dictated by the following:• Showroom temperature Level
The full array of unit fault codes is monitored. Therefore, the engineer attending site to maintain the units has full knowledge of the site status.
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• Showroom free heating/free cooling demands
Berkeley Controls BEMS Solution Proposal / The Halfords Group
The ventilation fans operate when the building is occupied with staff being active no fire alarm condition and the intruder alarm being unset.
2.7 Back Office / Warehouse Extract Fans The fans operate during the BEMS trading time clock being active no fire alarm condition and the intruder alarm being unset.
2.8 Toilet Fans The toilet fans operate during the intruder alarm being unset and no fire alarm condition.
2.9 Gas Appliances Gas appliances can be configured so that if the Extract system is not running then the appliances will not fire until a proving switch is triggered.
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beyond reporting or benchmarking 12
Berkeley Controls BEMS Solution Proposal / The Halfords Group
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3 store interaction facility 3.1 Electrical Power Meter The BEMS monitors the HVAC plant electrical consumption via a volt free pulse on the electrical meter or using a modbus electric meter. This is dependent on the premises having meters.
4 bureau facility 4.1 Bureau Monitoring The bureau monitoring is supported by the use of web based graphical and text based pages.
4.1.1 Time clocks The time clocks within the site software is checked on a regular period to ensure that the plant is switched correctly. This assists in trimming time schedules, to make an energy saving.
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4.1.2 Temperatures The temperatures are monitored on a site to ensure that the plant operation is correct. This also assists in the system analysis (if temperature is drifting away from the set point, analysis upon the system can tell you where the failure is and where rectification can be organised upon the heating and ventilation and air conditioning systems).
4.1.3 Plant operational times The plant operational times are monitored via the use of software hour run meters. All items of plant have a life expectancy cycle. By utilising the plant operational times, alarms can be raised to notify contractors of maintenance tasks.
Berkeley Controls BEMS Solution Proposal / The Halfords Group
4.2 Alarm Reporting
4.4 System Interrogation
4.2.1 Equipment Fault Reporting
The bureau staff personnel are trained to a high level to allow them to access the engineering level program within the BEMS controllers remotely. This allows the engineers to alter parameters within the program (override values). This assists contractors on site when performing maintenance tasks.
The site BEMS system is set to dial out to notify the bureau staff of a plant/equipment failure.
4.2.2 System Fault Reporting The site BEMS system is set to dial out to notify the bureau staff of a system failure. Detailed below are some examples of system failures: • BEMS Communications failure • BEMS I/O Controller failure • Health and Safety failure
4.3 Bureau Alterations The bureau monitoring is supported by the use of graphical and text based pages.
4.3.1 Time clocks Having access to the BEMS software within the controllers, allows the bureau staff to access time schedules and alter them accordingly. The times are altered typically to encompass holiday periods and extended hour periods (early or late operations).
4.3.2 Temperatures Having access to the BEMS software within the controllers, allows the bureau staff to access temperature settings (set points) and alter them accordingly. The set points are altered to the client’s requirements for comfort levels and also energy levels.
4.5 Software Engineering Upgrades The software within the BEMS controllers can be fully reprogrammed from the bureau location without having to attend site. This will allow the bureau staff the facility to: • Upgrade software to client’s requirements • Alter software to encourage energy savings after a site profile has been created • Reprogram on a system crash (typically caused by high electrical spikes on the transmission line)
4.6 Technical Help Desk The technical help desk employees are trained to provide a varied solution from: • Basic phone support - Interaction with the site staff to alter the system parameters to suit the site requirements • Technical phone support – Interaction with the site contractors to rectify site issues by altering the software or via discussion to source a solution
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5 system evolution 5.1 Bureau Connection The bureau can be connected to the premises in different variations. All items detailed below have been tested for full compliance:• Standard modem connection via hardwired telephone network • GPRS modem connection via a mobile telephone network • TCP/IP connection via the World Wide Web.
5.2 System Expansion The Building Energy Management System is configured to allow simple expansion. This will be achieved by simply adding further BEMS devices, wireless devices or third party protocol devices.
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Berkeley Controls BEMS Solution Proposal / The Halfords Group
6 energy savings 6.1 Conclusion The above would typically yield a saving between 10% and 25% of the annual electrical energy consumption. The savings actually achieved are specific to each individual premises, based on:• Type of heating and ventilation plant • Required lighting levels • Staff practices • Lockdown procedures
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energy management systems solutions
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Integral UK Ltd 1290 Aztec West Almondsbury Bristol BS32 4SG e: enquiries@integral.co.uk t: 01454 278 900 Registered office: JLL, 30 Warwick Street, London W1B 5NH.
Company Registration No. 5307588
berkeleycontrolsuk.com