Case Study: Energy Audit & Energy Management System for Bangunan Sultan Iskandar, Johor Bahru Green 3 Sdn Bhd (1016942-X)

GREEN 3 SDN. BHD

THE SMARTER ENERGY MANAGEMENT COMPANY

OUR MISSION

 “We strive to become a leading service provider in green technology, energy efficiency and sustainability in Malaysia and Southeast Asia”

 

Our Services

GREEN BUILDING INDEX

FACILITY AND ENERGY AUDIT

ENERGY MANAGEMENT SYSTEM

ENERGY PERFORMANCE CONTRACTING

ASHRAE in its publication said that 80% of the built environment that will be used in 2030 have already been constructed. The real question now is are we treating our buildings and or environment the rightful way?

Who we areAZIZAH KASSIM, PRINCIPAL DIRECTOR• 20 years experience, 17 years in Energy Management, Green Technology and Sustainability• Registered Electrical Energy Manager• Certified Energy Manager• Certified Energy Auditor (AEE)• Certified Professional In Measurement & Verification (CPMV)• GBI (Green Building Index) Facilitator• Certified HRDC Trainer• Conducted more than 50 building energy audits for building & industrial in Malaysia, Hong

Kong, Dubai & Australia• Trained more than 500 professional in energy management and energy efficiency

Who we are – Our key staffsAMIL HJ MD FUAT, SENIOR ENERGY ENGINEER• Amil has 14 years of combined experience in Energy Management, Project

Management, Metal Fabrication, Mechanical Erection & Material Handling. He is a certified Internal Auditor for ISO 9001:2008.

FAZLI MOHAMAD, ENERGY ENGINEER.• Fazli graduated in 2002 in BSs (Hons). In Chemical Engineering from University

Technology PETRONAS.Fazli’s responsibilities include Energy Audit & Development of Energy Management System and Implementation for Custom, Immigration and Quarantine Complex, Gerbang Perdana, Jalan Tengku Azizah, Bukit Chagar, Johor Bahru.

HAMED KHAJEH ARZANI – Energy AnalystASHWIN MENON – Electrical Engineer (Power Logging)

Our Track Records (2012 – present)• Energy Audit for 2G5&2G6 - Malaysian Entrepreneur Development Centre

(MEDC) & National Registration Department (NRD), Putrajaya• Energy Audit for 4G11 - Ministry of Women, Family & Community Development

building (KPWKM), Putrajaya• Training, Workshop & Consultation for 25 Resident Energy Managers of

International Islamic University Malaysia (IIUM), Kuala Lumpur• Energy Audit for 5G2 - Ministry of Higher Learning Education & Ministry of

Tourism (KPL & KPT) buildings, Putrajaya• Energy Audit for 4G9 - Ministry of Communication & Multimedia building (KPKK),

Putrajaya• Implementation of Energy Management System (EMS) for 4G8 - Ministry of Rural

and Regional Development (KKLW) building, Putrajaya

Our Track Records• Implementation of Energy Management System (EMS) for 4G11 - Ministry of

Women, Family & Community Development (KPWKM) building, Putrajaya• Development of Training Material in “Building Energy Audit” for Sustainable

Energy Development Authority (SEDA), Malaysia• Energy Audit & Development of Energy Management System and

Implementation for Custom, Immigration and Quarantine Complex, Gerbang Perdana, Jalan Tengku Azizah, Bukit Chagar, Johor Bahru, 2012 - Present

• Energy Audit for 4G4 - Kementerian Belia & Sukan, Putrajaya, 2014• Energy Management System (REEM Services) for Spirit Aerosystem (M) Sdn Bhd• Energy Audit for Kementerian Pengangkutan Malaysia (4G5), Kementerian

Kemajuan Luar Bandar & Wilayah, Kementerian Perumahan (4G8), Kerajaan Tempatan dan Kesejahteraan Bandar (4G10) and Kementerian Pembangunan Wanita, Keluarga & Masyarakat (4G11), 2015 - present

Case Study: Bangunan Sultan Iskandar

BSI BUILDING

JB SENTRAL

Also known as Customs, Immigration & Quarantine Complex (CIQ), / Gerbang Perdana

Building Information• Owner/Client: Property Management Unit, Prime Minister Department (Bahagian

Pengurusan Hartanah, Jabatan Perdana Menteri)• Gross Floor Areas 232,031 square meters• 22 agencies. Jabatan Imigresen & Jabatan Kastam Diraja Malaysia are largest users • Approximately 3,000 occupants, 400+ sub-contractors• 91 Million Public Users Per annum• Approximately 50% of the total areas operating 24 hours per day, 365 days per year.• Remaining areas operating in staggered office hours 7:00 AM to 5:30 PM, Monday – Friday. • Facility Management Company: Global Facilities Management Sdn Bhd (GFM)• Energy Consultant: Green 3 Sdn Bhd (1016942-X)

Introduction• Energy consumption has been in increasing trend since building

commissioning until 2012. • Since new facility management company taken over the building management

in Dec 2012, a new energy team has been set-up and successfully implemented Energy Management programme, with no investment needed.

• Annual energy consumption in 2014 was 30.9 Million kWh, reduced by 7.2% to 28.7 Million kWh in 2015. Average bill RM 1 Million Per Month

• Energy Management Programme started with Awareness Seminar, Training and Workshops with both End Users and Facility Management team.

• Developed Energy Policy, Energy Management Committee and Action Plan. • Energy Audit Level 2 was conducted and identified few measures which was

then implemented in stages, since August 2014.

Electricity Tariff – C1 Medium Voltage Commercial

Description July 2008 - Feb 2009

March 2009 - May 2011

June 2011 - December

2013Jan 2014 - Present Unit

1) Peak Charges 0.296 0.288 0.312 0.365 RM/kWh

2) Off Peak Charges NA NA NA NA RM/kWh

3) MD Charges 24.60 23.93 25.90 31.20 RM/kW

4) Connected Load NA NA NA NA RM/kW

Note: OPTR Tariff applicable from April 2015 onwards under certain conditions (RM0.292 per kWh) for off-peak usage

Milestone Year 1 (Dec 2013 – Nov 2014)

PLANNINGLEVEL 1 ENERGY

AUDITDEC 2013

LEVEL 2 ENERGY AUDIT

JAN - JUL

2014IMPLEMENT NO

COST MEASURESAUG 2014

ENERGY AWARENESS SEMINAR FOR END

USERSOCT 2014

ENERGY POLICY & ACTION PLAN

ENERGY SATISFACTION SURVEY (ESS)

NOV 2014

Milestone Year 2 (Dec 2014 – Nov 2015)

PROGRAMME REVIEW

DEC 2014

LEVEL 2 ENERGY AUDIT (SECOND)

JAN - JULY 2015

ESTABLISH ENERGY COMMITTEE (USER)

FEB - APRIL 2015

ENDORSE ENERGY POLICY

MAY 2015

ENDORSE ENERGY

COMMITTEE & ACTION PLAN

JULY 2015

Energy Management Initiatives (Dec 2013 – Present)• 1st Detail Energy Audit Dec 2013 – Oct 2014• Operational Energy Management Initiatives

• Chiller Temperature Reset (42 – 44 Deg C) – July 2014• Chiller & AHU Auto-Scheduling – November 2014• MD Control (Manual)

• Application of OPTR Tariff to TNB 15th Oct 2014• Submission of 1st REEM Report to Energy Commission (October 2014)• 1st Energy Awareness Seminar (October 2014)• 1st Energy Management Workshops (November 2014)• Energy Management Feedback Survey (November 2014)• Energy Management Follow-Up Workshop (February 2015 (All) & April 2015 (Immigration))• Second Energy Audit (December 2014 – July 2015)• Energy Policy Endorsed (March 2015)• Submission of REEM Report to Energy Commission (May 2015)• Development of Energy Management Committee & Action Plan (July 2015)

4-year electricity consumption records

30. 9 Million kWh in 2014

28.7 Million kWh in 2015

7.2% Savings (without

investment)

Cumulative Savings

Cumulative Savings Since Energy Management Initiatives started in July 2014 is 2.4 Million kWh (as at Nov 2015)

Energy Program Started in July 2014

Base-year

Aug 2013 – July 2014

Tariff Management (Off Peak Tariff Rider)

OPTR charges only RM0.292 instead of

RM0.365

Average savings RM70,000 per month since May 2015

Off Peak Tariff Rider – OPTR for C1 Commercial• Effective April 2015, BSI is entitled to CI OPTR after TNB approved the application• OPTR = RM0.292 per kWh instead of RM0.365 per kWh for off-peak consumption

under the following condition:-

The building’s measured Load Factor is higher than the Average Load Factor over six (6) months prior to the application (Condition 1).

No outstanding amount not more than the total deposit/bank guarantee paid. Otherwise this outstanding amount must be settled before applying (Condition 2).

Note: 1) Load Factor = Average Demand/Maximum Demand2) Off-Peak = 10:00 PM to 8:00 am following day

Energy Audit : Building Energy Accounting

Major End-Use

Annual Energy

Consumption (kWh)

%

Air- Conditioning System 10,766,434 38.3%Mechanical Ventilation 6,847,298 24.3%

Lighting 5,503,142 19.6%

Small Power 482,573 12.4%

Mechanical Pumps 1,039,844 3.7%Lift, Escalator & Travellator 493,283 1.8%

TOTAL 28,132,575 100.0%

Energy Audit : Detail Energy Accounting

Energy Audit : Building Load Profile

Baseload ~2,700 kWMaximum Demand ~ 4,400

kW

Energy Audit : Daily Load Profile

Maximum Demand Occuring consistently between 7-8 AM daily

Demand difference approximately 300 to 400 kW only

Energy Audit: Maximum Demand – When, How, How Much?

Energy Audit : Illumination

AreaUnderli

t GoodOverli

tOffices 21.9% 22.3% 55.8%Rest rooms, Waiting areas 11.1% 2.8% 86.1%Lobbies,walk ways, corridor 5.2% 11.7% 83.1%Pantry 3.5% 3.5% 93.1%

Storage Room 0.0% 0.0%100.0

%Toilets 9.1% 40.0% 50.9%

Reference: MS1525:2014

Energy Audit : Indoor Environmental Survey – Indoor Temperature & Relative Humidity

Category

Temperature &

Relative Humidity

Within Range 92.5%

Below Range (Too Cold) 6.5%

Above Range (Too Hot) 1.0%

TOTAL 100.0%

Reference: MS 1525:2014 Reference: Standard 55-2013 by ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning

Engineers)

Comfort Zone

Energy Audit: Indoor CO2 concentrationRemarks Range % of areas

surveyed

Overventilated Below 500 ppm 0.0%

Healthy Ventilation 501 to 799 ppm 13.4%

Meet Energy Efficient Ventilation

Requirement & Healthy

800 to 999 ppm 72.8%

Un-healthy Above 1000 ppm 13.7%

TOTAL   100.0%Note: ppm = parts per million

Energy Management SystemScore Energy Policy Organization Motivation Information System Marketing Investment

4 Energy Policy, action plan and regular review, have commitment of top management as part of an environmental strategy

Energy management has been fully integrated into management structure. Clear delegation of responsibility for energy consumption

Formal and informal channels of communication regularly exploited by energy manager and energy staff at all levels

Comprehensive system sets targets, monitors consumption, identified faults, quantities savings and provides budget tracking.

Marketing the value of energy efficiency and the performance of energy management both within and outside the organization.

Positive discrimination in favour of green schemes with detailed investment appraisal of all new build and refurbishment opportunities

3 Formal energy policy, but no active commitment from top management

Energy manager accountable to energy committee representing all users, chaired by a member of the managing board

Energy committee used as main channel together with direct contact with major users

M&T reports for individual premises based on sub metering, but saving not reported effectively to users

Programme of staff awareness and regular publicity campaigns

Some payback criteria employed as for all other investment

2 Unadopted energy policy set by energy manager or senior department manager

Energy manager in post reporting to ad-hoc committee, but line management and authority are unclear

Contact with major users through ad-hoc committee chaired by senior department manager

Monitoring and targeting reports based on supply meter data. Energy unit has ad-hoc involvement in budget setting

some ad-hoc staff awareness training

investment using short term payback criteria only

1 An unwritten set of guidelines

Energy management is the part-time responsibility of someone with only limited authority or influence

Informal contacts between engineer and a few users

Cost reporting based on invoice data. Engineer complies reports for internal use within technical department

Informal contacts used to promote energy efficiency

Only some low cost measures taken

0 No explicit policy No energy management or any formal delegation of responsibility for energy consumption

No contact with users No Information system. No accounting for energy consumption

No promotion of energy efficiency

No allocation of investment in increasing energy efficiency in premises

Energy Management Matrix (AEMAS standard)

Energy Policy

Energy Management Team (FM)

Energy Management Committee (Building Level)

• Proposed Organisation Chart• To identify representative• To formally appoint & assign

Roles & Responsibilites

BPHPemilik Bangunan

JKRAgensi

Pelaksana

Pengurus Fasiliti (GFM)

Pengurus Tenaga

Jabatan Kastam DiRaja

MalaysiaPengguna Bangunan

Jabatan Imigresen MalaysiaPengguna Bangunan

RU 1Pengguna Bangunan

RU 2 dan seterusnya

Pengguna Bangunan

Green 3 Sdn BhdPerunding

Tenaga

Summary of Energy Conservation Measures (ECMs)Item Categor

y Focus area ESM Status

1 A Tariff Management Tariff Management: Apply for "Off Peak Tariff Rider" to enjoy 20% cost savings during off peak period.

Implemented in March 2015. Cost Savings enjoyed by end

June 2015 totalling to approximately RM140,000

2 A Tariff Management Apply for Neon & Floodlight G1 Tariff Instead of C1 Tariff for the Compound, Fencing and Building Façade Lighting Usage Not yet implemented

3 B Lighting De-lamp over-lit areas at corridors, toilet, lift lobies, lobbies, waiting areas and other non-essential areas. In-progress

4 C LightingRetrofit 18-W & 36-W Standard Fluorescent Lamp (TLD), 18-W & 26-W Compact Fluorescent Lamps (PLC), 50-W Halogen and 400-W Metal Halide High Bay Lamps with equivalent LED type.

In-progress

5 C Chiller Plant Upgrade

Retrofit Chiller Plant and Cooling Towers with High Efficiency Variable Speed Chillers Under further study

6 C Maximum Demand Control

Install Maximum Demand Control System to reduce Maximum Demand Under further study

7 B AHU Control Reduce AHU Operation Hour At Night To propose8 B ACSU Timer to turn off ACSU periodically To propose9 B Lighting Use of Occupancy Sensors to Turn Off Lighting To propose10 C Motors Replace Motors with Premium Efficiency Motor To investigate further11 B RU Small Power &

Lighting Reduce Baseload To propose

Category of ECM & Summary • Category A - Tariff or Contract Management • Category B - No or Low Cost Measures (Best Practices)• Category C - Medium to High Cost Measures

Description Unit TotalBaseline Electrical Energy kWh 30,944,215

Potential kWh reduction kWh 5,591,033Resultant Energy kWh 25,353,182Gross Floor Areas m2 232,031Existing BEI kWh/m2/year 134Resultant BEI kWh/m2/year 109

Potential Savings ~

18.4%

Summary of ECMs - SavingsItem Description

Demand Savings

(kW)

Energy Savings

(kWh/year)

Demand Cost

Savings (RM/year)

Energy Cost

Savings (kWh/year)

Total Energy

Cost Savings

(RM/year)

% of energy savings

1 Tariff Savings:- Apply for "Off Peak Tariff Rider" Done Done Done Done Done Done

2 Tariff Savings - Apply for Neon & Floodlight G1 Tariff NA NA NA NA 38,387 0.3%

3 De-lamp over-lit areas 167 899,202 62,688 328,209 390,897 2.9%

4

Retrofit 18-W & 36-W Standard Fluorescent Lamp (TLD), 18-W & 26-W Compact Fluorescent Lamps (PLC), 50-W Halogen and 400-W Metal Halide High Bay Lamps with equivalent LED type.

414 2,435,094 154,968 888,809 1,043,777 7.9%

5 Retrofit Chiller Plant and Cooling Towers with High Efficiency Variable Speed Chillers 146 1,923,349 54,802 702,022 756,825 6.2%

6 MD Control 300 50,000 112,320 18,250 130,570 0.2%

7 Turn off AHU operating 24 hours for 3 hours per day from 7 PM to 7 AM the next morning 203,815 74,392 74,392 0.7%

8 Use timer to turn-off Air Cooled Split Units at areas operating 24 hours 79,574 29,044 29,044 0.3%

    1,028 5,591,033 384,779 2,040,727 2,463,893 18.4%

Summary of ECMs – Investment & PaybackItem Description Investmen

t

Payback Period (year)

Estimated

Lifespan (year)

Rate of return (% per year)

1 Tariff Savings:- Apply for "Off Peak Tariff Rider" Completed Completed

2 Tariff Savings - Apply for Neon & Floodlight G1 Tariff 5000 0.13

3 De-lamp over-lit areas -

4 Retrofit standard lamps with LED Lamp 2,382,410 2.3 5.0 23.8%

5 Retrofit Chiller Plant and Cooling Towers with High Efficiency Variable Speed Chillers 7,300,000 9.6 30.0 7.0%

6 Maximum Demand Control 200,000 1.5 7.0 51.0%

7 Turn off AHU operating 24 hours for 3 hours per day

8 Use timer to turn-off Air Cooled Split Units at areas operating 24 hours 13,500 0.5 5.0 195.1%

    9,900,910 4.0

MonthCooling Capacity (kWrh)

Total Electricity Consumption

(kWeh) – Chiller, Pump & Cooling Tower

Coefficient of Performance

(COP)

December 2014 1,623,611 724,768 2.24January 2015 1,456 659 607,268 2.40February 2015 Data error* Data error* Data error*March 2015April 2015 1,685,914 685,012 2.46Total 4,766,184 2,017,048 2.36

Chiller Plant Analysis

MonthCooling Capacity (kWrh)

Total Electricity Consumption

(kWeh) – Chiller, Pump & Cooling Tower

Coefficient of Performance

(COP)

December 2014 1,623,611 490,506 3.31January 2015 1,456,660 403,164 3.61February 2015

Data error* Data error* Data error*March 2015April 2015 1,684,017 467,687 3.60Total 4,764,289 1,361,357 3.50

Chiller Analysis

Comparison with Standards• MS 1525:2014, Table 23, “Water Chilling Packages, electrically driven: Chiller energy

performance rating”. The table provides for a new Centirfugal Chiller more than 600 RT, where the recommended efficiencies are as below:-

• COP = 5.96 minimum for chiller tested at 100% load, using the “Malaysian Test Conditions” method.

• COP = 5.58 minimum for chiller tested using the “MPLV Standard Condition” method.• COP = 6.17 minimum for chiller tested at 100% load using the “Std AHRI Test

Conditions” method.• COP = 6.51 minimum for chiller tested using the “IPLV at AHRI Standard Conditions”

method.• Conclusion: Chiller COP declined between 35 – 45%(Note: RT = Refrigerant Tonne)

ASHRAE’s Chiller Performance Indicatior

Description Unit Average

Existing Chiller's Average Efficiency kW/ton

1.01 New High Efficiency Chiller's Average Efficiency kW/ton 0.65

Average Cooling Energy kWrh

1,588,096

Expected Use of Chiller's Energy kWh 293,507

Existing Chiller's Monthly Energy kWh 453,786

Monthly Chiller's Energy Savings kWh 160,279

Annual Energy Savings kWh

1,923,349.13

Average Blended Energy Cost RM

0.425

Annual Cost Savings RM 816,542

Total Investment RM

7,300,000

Simple Payback Period Year

8.94 Chiller Expected Life Year 30Return On Investment (ROI) Per Year 8%

Maximum DemandLoad Profile for BSI in 2014 – Demand Occurs at 8 AM, 4,500 kW

Maximum Demand ControlLoad Profile in 2005

Demand Shifted to 7:15AM (Outside MD period) ; Reduced by 200 kW through manual operation only

MD Control Strategy• Strategies to control MD:-

Stage 1: Identify Critical Loads that contribute to MD (during MD hour) – done

Stage 2: Deploy manual control strategy – we are still at this stage!

Stage 3: Evaluate result and implement continuous improvement actions

Stage 4: Implement Automatic Control System

MD Control Strategy

• Stage 1 - Identify Critical Loads that contribute to MD (during MD hour)

MD occurs between at 8-9 AM

Critical Loads during this periods are Ventilation Fans, Chillers & AHUs

Ventilation Fans operation is triggered by CO (Carbon Monoxide level)

Most AHU will start on 7:00 and stop at 5:30 PM. 18 out of 36 AHU operates 24 hours per day

Second Chiller is also operating during MD period

MD Control Strategy

• Stage 1 - Identify Critical Loads that contribute to MD (during MD hour) Only 24 out of 347 Ventilation Fans are monitored by BMS

Ventilation FansInstalled Demand

(kW)

Percentage

1. EXHAUST AIR FAN 1905 Car & Motorcycle

Section 1282 43% Bus & Coach Section 313 10% Others 309 10%1. FRESH AIR FAN 1019 Car & Motorcycle

Section 447 15% Bus & Coach Section 119 4% AHU & FCU / MAIR 89 3% Make-Up Air 75 2% Others 289 10%1. SMOKE SPILL FAN No data 0%1. PRESSURIZATION FAN 78 3%

3003

MD Control Strategy• Stage 2: Deploy manual control strategy

Avoid simultaneous operation of grouped loads such as Air Handling Units and Ventilation Fans –assign staggered ON time to each AHU and Fans or Pumps which are controlled by BMS, to avoid peak demand during the 8-9 AM period.

Turn-off AHUs operating continuosly from the previous night for 1 hour, i.e. from 8-9 AM. The indoor temperature and relative humidity in a long, pre-cooled rooms are able to drift temporarily, without affecting the indoor comfort.

Issue a Guideline Note to encourage end-users to avoid turning on unnecessary electrical appliances between 7 – 8 AM.

MD Control Strategy• Stage 3: Evaluate result and implement continuous improvement actions

Use Digital Power Meters at critical loads and map the relevant reading together to understand t

• Stage 4: Implement Automatic Control SystemFeedback from Digital Power Meter is used to continuously feed demand data

information to Control System that will intelligently implement the Control Strategies. (continuous improvement required)

Maximum Demand pattern can change if you keep controlling manually

Identify the culprit again! (Jan 2016)

Turn Off AHU operating 24 hours 3 hours at night

L 2-1 (24 hours) L 2-2 (11 hours)

Obeservation 1: Return Air Temperature is almost consistent throughout the day

Turn Off AHU operating 24 hours 3 hours at night

L 2-3 when AHU turned off ½ hourObeservation 2: Indoor Air Temperature is able to drift for some time after AHU is turned off

Turn Off AHU operating 24 hours 3 hours at night

• There is opportunity to turn off the AHU for minimum half hour at night, without affecting the indoor temperature.

• Develop schedule to turn them off half an hour for every 2 hour cycle from 7 PM to 7 AM the next day.

• Proposed turn off time is 7:00 – 7:30 PM, 9:00 – 9:30 PM, 11:00-11:30 AM, 1:00 – 1:30 AM, 3:00 – 3:30 AM and 5:00 – 5:30 AM.

• Therefore a total of 3 hours per day could be reduced. • By implementing this strategy, energy reduction potential is 203,815 kWh with

annual cost savings of RM74,392 per annum.

Total Savings Achieved for BSI

Energy Savings ~ 7% per annumTariff Management ~ 7% per annum

Total Savings (with no investment) ~ 14% per annum

Energy Audit

Energy Audit Process

Energy Audit MethodologyDesktop Data Collection & Analysis

Desktop Data

Monthly utility bills – electricity,

chilled water, water

Building & Room

Layout Plan

Building architectural

elevation drawing

Design Manuals & Drawings (As-built) Operation

Manuals & Drawings

Asset List (CMMS)

Condition Assessment

Report

56

MethodologyField Data Collection (Site Survey & Measurement)

• To audit energy consuming equipment - type, power, how many, loading, how they are used, etc

Equipment Survey

• To understand how buildings / equipment are operated, start-stop, variable speed, timers, sensors, scheduling,etc

Operation Survey

• Measurement of lighting brightness, air-conditioning performance (temperature, RH, flow), building energy input profile, etc

Energy Measurement

•To obtain end-users feedback on their practices when operating equipment, comfort level, etc

Interviews with End Users

57

Methodology Field Data Collection / Measurement: Energy Input Profiling

BTU Energy Meter

- Measure chilled water energy input

Power Logger

- Measure electrical power input

58

Portable Energy Audit Equipment

Lux-meter -Measure

lighting brightness

-To measure (snapshot) the

indoor & outdoor light

level (lux)

Thermo -hygrometer

- Measure ambient air temperature & relative humidity

CO2 sensor

- Measure indoor CO2 concentration-To measure

(snapshot) the CO / CO2 level for indoor

air quality

Portable Multi Power Meter with Memory /

Data Logger* (based on BMS data)

-To measure & monitor (log) A, V, W, power

factor, frequency, THD (single & 3-phase

59

Clamp-On Power Meter (Snapshot)

-To measure (snapshot) A, V, W,

power factor, frequency, THD

(single & 3-phase)

BTU Clamp-On Meter with Flow & Temperature

Sensors-To measure chilled water cooling load

(flow-rate sensors and temperature

loggers; immersion type)

Anemometer-To measure

(snapshot) air-conditioning

ventilation rate (CFM)

60

Energy Saving Measures Tariff / Rate

ManagementUtilization

Management (Conservation)

Energy Efficiency Technologies

•Peak Reduction Control•Switch to lower fuel / utility cost

•Shift consumption from Peak to Off Peak period (Thermal Storage)

•Avoiding Power Factor Penalty•Turn off when not in use•Load scheduling•Set-point optimization•Optimal Start-Stop•Routine Maintenance•Building envelope improvement•High Efficient ACMV•High Efficient Lighting•High Efficient Pumps / Motors•Building Management System

0-5% Cost Reduction

1-10% Cost Reduction

5-25% Cost

Reduction

61

Energy Saving Measures

Categorization of ESMs according to financial return attractiveness, level of savings or ease of implementation

62

Preparation for Site Survey:- What energy auditors should know?

• Safety / Protocol in the building / Work Permit ?• Planning for measurement; prioritizing areas, work

load/area segregation, equipment usage.• Access & escort to offices, utilities rooms & common

areas for survey & measurement exercise – during office hours & after office hours?

• Interviews / end-users’ feedbacks on Energy Management System & Indoor Environmental Condition

• Is intermittent interruptions to office operation acceptable (due to room survey work)? And if not, please indicate which areas.

63

Green 3 Sdn Bhd310, Level 3, Block B, Kelana Jaya, Jalan SS 7/26B, 47301 Petaling Jaya

Tel: 03-7887 6088Email: Azizah.kassim@gmail.com / Azizah.kassim@green-3.com.my

Thank You