Report on Building Management System, how it works, components of BMS, Advantages & Disadvantages of BMS, Costing of BMS and its vendors, etc LINK TO DOWNLOAD: https://dimpstrail.gumroad.com/l/yyifk

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Buildingmanagementsystem
DIMPLE PODDAR
Sem 09 | Date: 09 July 2020
Smt. K. L. Tiwari college of Architecture

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BUILDING MANAGEMENT SYSTEM
Introduction
 Building Management Systems (BMS) also known as Building Automation Systems (BAS),
Building Management and Control System (BMCS), Direct Digital Controls (DDC) and
Building Controls.
 Most Common Current industry term
1. Building Management System (BMS) or
2. Building Management and Control Systems (BMCS)
 BMS systems are “Intelligent” microprocessor based controller networks installed to
monitor and control a buildings technical systems and services such as air conditioning,
ventilation, lighting and hydraulics.
 More specifically they link the functionality of individual pieces of building equipment so
that they operate as one complete integrated system.
 Current generation BMS systems are now based on open communications protocols and
are WEB enabled allowing integration of systems from multiple system vendors and
access from anywhere in the world.
What is Intelligent Microprocessor control?
Figure 1: Intelligent Microprocessor control inputs & outputs

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Figure 2:Intelligent Microprocessor control inputs & outputs
Components of BMS
Figure 3: Components of BMS - Hardware

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Figure 4: Components of BMS - Field Device
Figure 5: Components of BMS - Networks

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Typical User interface options
 Can be a basic LCD display through to full Graphic Operator Workstations.
 The Graphic Interface must be intuitive to use and not require an Engineering degree
to interpret.
 They must provide sufficient level of detail to enable the operator to determine what
is happening and what is going to happen next.
 Graphics need to provide access to parameters for tuning and seasonal information
needs to be built into the system.
Figure 6: Typical user interface

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Figure 7: A typical user interface page
BMS simple user interfaces – Built in display
 User defined menus.
 Built into the BMS controller or a remote device.
 Password protected.
 Monitor and control field points, operating setpoints, time schedules, alarm
management, even trend data.
Figure 8: BMS simple user interface

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BMS Simple User Interfaces – WEB Server
 WEB Server built into a BMS network controller.
 User defined menus and graphic pages.
 Password protected, multiple access levels.
 Monitor and control field points, operating setpoints, time schedules, alarm
management, even trend data.
Figure 9: BMS Simple User Interfaces – WEB Server
BMS Workstation – AHU Graphic Display Sample
Figure 10: BMS Workstation – AHU Graphic Display Sample

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BMS Workstation – Chiller Graphic Display Sample
Figure 11: BMS Workstation – Chiller Graphic Display Sample
What does BMS do?
 The most common primary function of the BMS is the control of a buildings Heating,
Ventilation and Air Conditioning Systems (HVAC) including;
1. Air Handling Units
2. Chilled Water Plant
3. Cooling Towers
4. Tenant Condenser Water
5. Heating Water Plant
6. Exhaust Systems
7. Zone Controls
8. Computer Room AC
 Control of Building Systems and Services

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 Graphic User Interface (GUI)
 Real Time Monitoring of Building Operation and Performance
 Trending and Logging of Building Operation and Performance
 Time Scheduling of Building Systems
 Fault Management and Alarming
 Control Application Programming
 User Event Management
 Energy Management and Reporting (NABERS)
Building control applications
 Zone temperature monitoring and control
 Zone Variable Air Volume (VAV) control to zones
 Zone CO2 monitoring and control (Air Quality)
 Air handling unit supply air temperature control
 Air handling unit supply air flow / pressure control
 Main Plant Chiller and Boiler sequencing
 Toilet, car park, kitchen and general exhaust fan control
 After Hours Building Control
Figure 12: Some basic components of BMS Figure 13: Actual image of BMS setup

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Interaction of BMS with other building systems
Figure 14: Interaction with other building systems
Advantages of BMS
 Give better control of systems and conditions.
 Data gathering and report generation.
 Increased productivity.
 Allow better informed response to complaints.
 Allow allocation of operating costs within a business or to tenants.
 Allow more targeted use of resources for replacement
and maintenance of equipment.
 Early detection of issues.
 Reduced operating costs and carbon emissions.
 Improved equipment life.
 Improve safety.

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Disadvantages of BMS
 Increased complexity of the system.
 Initial cost + the cost of installing a cooling system for the computers.
 Normal buildings last longer than intelligent buildings.
 Need a trained staff for it operations.
Cost of BMS
 The major vendors include Johnson Controls, Schneider, Siemens, Honeywell, UTC,
Trane, Delta Controls, Beckhoff, Azbil, Cylon, ASI, Technovator, Carel, Deos, Airedale,
etc.
 Unfortunately, BMS is expensive and requires specialized installation, programming
and maintenance.
 So while operational expenditure (opex) remains low, capital expenditure (capex)
costs can make returns on investment (ROI) seem like a daunting task.
 The average cost to deploy a basic BMS is at least $2.50 per square foot and can
be as high as $7.00 per square foot, equivalent to at least $250,000 for a 100,000-
square-foot building.
 The very high cost of traditional BMS means ROI is a challenge for all but the largest
buildings; often it takes at least four years to recover the cost of a BMS installation.
Low ROI limits the willingness of owners to invest in BMS deployments in more than
90% of buildings.

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 Where BMS is deployed, it is usually only to control the HVAC system in high-traffic
areas in the very largest buildings, well over 100,000-square-feet. And these
buildings make up only 10% of the U.S. commercial real estate stock.
 Even in these buildings, BMS usually isn’t applied to low-traffic areas such as
warehouses, stockrooms or garages, or to distributed equipment such as pumps,
generators or parking lot lights on campuses and industrial sites, according to an
Intel report titled Affordable building automation system enabled by the internet of
things.
References
 https://www.elkoep.com/bmsko
 https://www.melbourne.vic.gov.au/SiteCollectionDocuments/bms-the-basics-explained.pdf
 https://www.designingbuildings.co.uk/wiki/Building_management_systems_BMS
 https://rcssys.blogspot.com/2017/01/
 https://enterpriseiotinsights.com/20160808/buildings/building-management-system-tag31-
tag99
 https://www.marketwatch.com/press-release/global-building-management-system-market-
2020---upcoming-scope-size-estimation-returns-pricing-trends-growth-opportunity-regional-
outlook-and-forecast-to-2026-2020-06-22
 https://www.youtube.com/watch?v=INZm4tgvi1g
 http://gulfstatesautomation.com/hvac-control/