PMC awares that by reducing energy consumption, we contribute to the sustainable future of each client, partner, employee, community and to our environment. In each project managed by PMC, technologies and standard processes are effectively applied to reduce water and electricity consumption, minimize waste release to the environment and enhance efficient use of natural energy sources.

1. 1
THE ENERGY SAVING SOLUTIONS IN
OFFICE BUILDINGS’ MANAGEMENT
AND OPERATION
May 16, 2014
1Integrity - Challenges - Respect – No compromise on quality - Life Balance
www.pmcweb.vn

2. 2
I. General introduction
II. Technical system operation
III.Energy saving solutions
IV.Outcomes
CONTENT
2

3. i. General introduction
Objectives of PMC
PMC awares that by reducing energy consumption, we contribute to the
sustainable future of each client, partner, employee, community and to our
environment.
In each project managed by PMC, technologies and standard processes are
effectively applied to reduce water and electricity consumption, minimize
waste release to the environment and enhance efficient use of natural energy
sources.
3
”
“

4. ii.TECHNICALSYSTEM
OPERATION 1. VRV III Air Conditioning System
is an advanced system with solutions assisting in effective management, monitoring and control such as:
Scroll compressor
is driven by
inverter with the
ability to change
the speed of
compressor and
allow adjustment
of cooling capacity
in each area
according to the
users’ need.
4
• Heat exchanger and cooling fans are designed to
achieve the best performance.
• Use intelligent temperature control in
combination with thermal sensors, electronic
throttle valve help the FCU operates perfectly
and save energy.

5. ii. TECHNICAL SYSTEM
OPERATION
1. VRV III Air Conditioning System
is an advanced system with solutions assisting in effective management, monitoring and control such as:
Use electric current
sensor to monitor
energy
consumption and
give necessary
warning to the
operator.
Use Intelligent Management Software to
help manage, monitor and control the entire
air conditioning system of the building.
5

6. ii. TECHNICAL SYSTEM
OPERATION
2. Lighting system
Objective: maximize natural lighting will significantly reduce energy consumption
Emergency
staircase areas
are lit by
windows and
energy saving
lighting fixtures.
Motion sensor
Lighting at staircase
 Office and basement areas use neon lights with installed capacitor to
improve capacity cosφ from 0.55 to 0.85
 Lobby areas use energy saving lighting fixtures.
 Toilet area uses lamps with high switching frequency tubes to improve bulb
life-span and motion sensors with timer function to enable automatic
on/off turning.
Application of EIB intelligent
lighting technology to
control and schedule
lighting. Use sensor to allow
self-control the automatic
system and reduce
electricity consumption.
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7. ii. TECHNICAL SYSTEM
OPERATION
3. Elevator System
Elevator system in building consumes estimatedly 10% of electricity. The following control features contribute to
improve performance, reduce energy consumption and prolong the lifetime of elevator:
Elevator monitoring software
To be controlled by the inverter (VVVF), use
direct drive and fully automatic
Process signal in priority order.
Process signal by artificial intelligence
microprocessor (AI) to optimize the elevator
journey. For example: when you call for elevator,
the nearest or empty elevator will automatically
move to your floor.
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8. ii. TECHNICAL SYSTEM
OPERATION
4. Ventilation System
Restrooms are ventilated with local exhaustion fan with
10-15 air change.
Conditioned areas are supplied with fresh air at the
rate of (20-30)m3 per hour.
Staircases are installed with pressurization fans with
suitable pressure and capacity.
Odor absorber fan system controlling
Basement’s air exhaustion by forced ventilation system
includes wind turbines, inlets and exhaust air ducts.
These fans are driven by the inverters, thus they
can adjust airflow and save energy.
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9. ii. TECHNICAL SYSTEM
OPERATION
5. Electricity System
Capacitors are set-up in automatic control mode to ensure a stable
cosφ factor at above 0,98.
Building circuit passes through switching cabinets organized in
spacious area to allow convenient inspection, monitoring,
maintenance and periodic equipment cleaning.
The management of electricity consuming systems at engine room,
public area, etc. is monitored via power meter for each area on each
floor.
A standby generator is placed in spacious room with 20cm thick
soundproofed, heat insulated wall, spring vibration reduction system
and silencer to minimize noise leak to outside when the engine
operates.
The cabinets of electricity distribution system
The electricity meter count
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10. III. ENERGYSAVING
SOLUTIONS
1. Energy Management Board
Energy Management Board model in projects
10
Director of O&M
(Chairman)
Building Director
(Vice Chairman)
Chief Engineer’s Assistant
Standing Member
Financial Member
Other DepartmentsFinance – Accounting
Dept.

11. III. ENERGYSAVING
SOLUTIONS
2. Control energy consumption of
the Departments
11
Area Time Risk control Energy consumption control
Operation –
Maintenance
(O&M)
6-7h Equipments’ shut off according to iBMS schedule
7h-8h
Check to avoid system risk, update the energy
consumption data
8h-11h30 Carry out assigned tasks
Maintenance of listed equipments
Control sub-contractors’ use of elevator
Meeting room Check meeting room’s equipments
13h-14h Check restaurant’s equipments
14h-15h Check to prevent system risk
17h-18h Equipments’ shut off according to iBMS schedule
18h-20h
Set up the meeting room’s equipments following
BEO, address the on-going tasks
0h-2h Check to prevent system risk Check out sealing situation
Check out the engineering
3h-6h Monitor at iBMS room Monitor the equipments’ operation
Daily Update the information from departments
Monitor the system operating process , control
operation schedule of AC, lights and water, etc.
Cleaning
Daily Cleaning
Notify O&M the abnormal operation and equipments’
break down

12. III. ENERGYSAVING
SOLUTIONS
2. Control Energy Consumption of
the Departments
12
Area Time Risk control Energy consumption control
Operation –
Maintenance
(O&M)
6-7h Equipments’ shut off according to iBMS schedule
7h-8h
Check to avoid system risk, update the
energy consumption data
8h-11h30 Carry out assigned tasks
Maintenance of listed equipments
Control sub-contractors’ use of elevator
Meeting room Check meeting room’s equipments
13h-14h Check restaurant’s equipments
14h-15h Check to prevent system risk
17h-18h Equipments’ shut off according to iBMS schedule
18h-20h
Set up the meeting room’s equipments
following BEO, address the on-going
tasks
0h-2h Check to prevent system risk Check out sealing situation
Check out the engineering
3h-6h Monitor at iBMS room Monitor the equipments’ operation
Daily
Update the information from
departments
Monitor the system operating process , control operation
schedule of AC, lights and water, etc.
Cleaning
Daily Cleaning Notify O&M the abnormal operation and equipments’ break down

13. III. ENERGYSAVING
SOLUTIONS
3. Energy Control Schedule over
Time
13
Time Energy consumption control Area
Summer
7h30’-10h00 • Open curtains to take advantage of natural light and turn off
1/3 lighting fixtures (if possible)
• Set up AC temperature not lower than 22ºC
Office
10h00’-16h00’ • Shut curtains, windows and turn off 2/3 lighting fixtures
during lunch break
• Set up the AC temperature not lower than 23ºC
13h00’-16h30’ • Shut curtains, windows and turn off lighting fixtures (if
possible)
• Set up the air con temperature is not lower than 22ºC
When clients leave
• Turn off computers, photocopiers, printers, lights and other
electricity devices (Except the other ones as server or
specialized equipments till in use)
• Check and close all windows (if still open)

14. III. ENERGYSAVING
SOLUTIONS
3. Energy Control Schedule over
Time
14
Time Energy consumption control Area
Winter
7h45’-11h00 • Open curtains the take advantage of natural light and turn of
1/3 light (if possible)
• Set up the air con temperature is not lower than 25ºC
Office
11h00’-13h00’ • Close the curtains, windows and turn of 2/3 lights during
lunch break
13h00’-17h00’ • Open the curtains the take advantage of natural light and
turn of 1/3 light (if possible)
• Set up the air con temperature is not lower than 24ºC
When clients leave
• Turn off computers, photocopiers, printers, lights and other
electricity devices (Except the other ones as server or
specialized equipments till in use)
• Check out and close all windows (if still open)

15. III. ENERGYSAVING
SOLUTIONS
3. Energy Control Schedule over
Time
15
Time Energy consumption control Area
7h-17h
• Take advantage of natural light and turn of 2/3 light
• Set up the air con temperature is not lower than 22ºC
Engine and equipments’
room
17h-22h
Set up the air con temperature is not lower than
23ºC depend on each equipment’s loading
22h-7h
Set up the air con temperature is 24 ºC (if possible) or is not lower than 23ºC
depend on each equipment’s loading

16. III. ENERGYSAVING
SOLUTIONS
4. Energy Control by IBMS
Management interface of electricity management system
IBMS system helped O & M department in the
management and operation of buildings and control
the energy consumption.
Lighting control system IPAS GmbH (EIB) allows the
operator to control, track, schedule, on/off lights
remotely.
Central control system – Intelligent Manager allows the
operator to monitor, schedule, monitor operational
status of the air conditioning system.
Based on the parameters that the system provides,
O&M Dept. can evaluate the efficiency of electricity
system, the quality of maintenance and make
schedules to operate the system at optimum.
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17. III. ENERGYSAVING
SOLUTIONS
5. Management and Maintenance
Methods
Provide periodic
maintenance
program to
technical systems
such as air
conditioning,
power, low
voltage, and fire
protection
systems.
The device is
periodic
maintenance based
on recommended
by the
manufacturer, and
practical operation,
performed by a
team of
professional
technicians. It
should always be in
good condition,
optimal operation.
Operating
parameters, the
electricity
consumption of
technical system
is recorded at
regular, as a basis
for evaluating
energy efficiency.
Since then offer
solutions to
improve the
energy efficiency.
Schedule. on/off
air con and lights
based on actual
demand, reduce
the operating
time of the device
and save energy
Communicate,
raise awareness
of saving
electricity for staff
and customers.
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3
4
5
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18. III. ENERGYSAVING
SOLUTIONS
6. Environmental Impact Control
Cleaning Dept. collects and classifies the garbage. Solid waste is collected in a container, it will be moved
by the car of Environment Company and will be
collected and handled according to law once a day.
For hazardous waste: oil, fluorescent bulbs, batteries,
and cartridge, it has very little volume, be arranged
gathering at a place as prescribed; then will be handled
according to regulations.
Septic tank will be handled every 6 month by
microbiological method
Kitchen area drains will be treated by filters and grease
traps are cleaned daily after use.
Waste management:
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19. III. ENERGYSAVING
SOLUTIONS
6. Environmental Impact Control
Regular vacuuming and cleaning offices, buildings
and foundation sanitation, solid waste collection to
minimize dust released into the air.
The office machines are placed ventilation position
without causing accumulation of toxic gas and
regularly maintenance.
Periodically check the concentration of hazardous
substances as well as suspended dust in the building
and outside the building, such as CO2, NOx, CO...
The big noisy machines like generators, have been
isolated in a closed room, located in the soundproof
area of basement.
Pollution control (air, noise, optic and emissions, etc)
Emissions arising from electricity generation process
is collected in the exhaust system for dust
pretreatment before discharging into the
environment through the chimney on the roof.
Reduced the flow of fresh air supply fan to reduce
noise.
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20. iV. Outcomes 1. Outcomes
20
No. Applied methods
Energy saving
(kWh)/month
Cost saving
(1000 VNĐ)/month
1 Turn off 6 elevators after working hour 834 2579
2 take advantage of natural light and turn of 1/3 light (summer) 1368 4104
3
Change 80 light bulbs of 150w in garden and in front of the
building to energy efficient light bulb - 13w
2376 3,386
4 Set up turn on/off the lobby’s lights as schedule 102 306
5 Set up the fresh air supply fans at 50% performance 15,540 44,362
6
Set up the temperature for lobby’s air cons, public areas at ½
performance and stable temperature is 25ºC
3072 9216
7
Keep 2hours checking the loading of equipments as air con
temperature, wind fans, ventilation fans, lights, etc
2500
8 Check out to avoid losing water in restroom 4 times per day 700
TOTAL 67,153

21. iV. Outcomes 2. Awards
VNPT Tower
 3rd prize, Energy Efficiency Building Award 2011
 2nd prize, Energy Efficiency Building Award 2013
Agribank Tower
 2nd prize, ASEAN Energy Efficiency Building Award 201
 2nd prize, Energy Management in Industry and Building 2012
 3rd prize, Energy Efficiency Building Award 2013
Mobifone Tower
 1st prize, Energy Management in Industry and Building 2013
 Received the merit of Hanoi People Committee for energy efficiency 2011 and
2013
21

22. PROPERTY & MANAGEMENT COMPANY (PMC)
Website: www.pmcweb.vn
Tel: (+844) 3773 8686
Head Office: 21F, VNPT Tower, 57 Huynh Thuc Khang, Dong Da Dist., Ha Noi
TP.HCM: Room 505, 42 Pham Ngoc Thach, Dist. 3, TP.HCM
Đa Nang: 75 Tran Phu, Hai Chau Dist., Da Nang