green schools 2 - rcxrc.emsd.gov.hk

Green Schools 2.0for Retro-commiss ioning

Introduction of smart

technologies to facilitate RCx

AGENDA

Technology Developmenta. Control T ransformation

b.Data Storage Transformation

c. RCx Technology Development

d. Future Faci l i ty Management (FM)

e. Benef i t of Future Faci l i ty Management (FM) System

Smart Technologies on Campus / Institution Buildingsa. Repai r & Adjust ing/ F ine-Tuning

b. Modif icat ion/ Part ia l Retrof i t

Smart HVAC & Lighting System for Rooms cum Occupant Activity Detection Systema. St rategies

b. Operat ion Mode

c. Season Control St rategy

d. Chi l ler Opt imisat ion as per reserved rooms schedule

e. Advantages of Smart HVAC & L ight ing System for Rooms

Conclusion

1

2

3

4

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P r o f e s s i o n a l T a l k

Technology Development

ABOUT US

3

Technology Development - Control Transformation

1) Local Control

(On/Off)2) Mimic

Panel4) A.I.

3) BMS/

CCMS

Local Control (On/Off) Mimic Panel BMS/CCMS A.I. Platform



1) Nil 2) Log sheet 4) Cloud Data3) Data Capture

& Storage

By Manual Data Log

Data Capture & Computer

Storage

Cloud Data [Source: https://inno.emsd.gov.hk/en/it-wish-list/index_id_238.html

https://inno.emsd.gov.hk/tc/it-solutions/index_id_52.html]5

Technology Development - Data Storage Transformation

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Control Transformation

Data Storage Transformation

Future Facility Management

(FM)



RCx Technology Development

FORESEE…



Future Facility Management (FM)

Predict the trend for further

corrective and preventive action

Monitoring and analysing the

performance of the system

through visualisation from BMS

Extract equipment information/data

through cloud by scanning QR code

Receive pop-up Fault Signal through

Email or mobile devices

Use mobile phone/ tablet for report the

status of equipment/ control the

equipment



Benefit of Future Facility Management (FM) System

Performance Visualisation

Comprehensive Workflow

Management PlatformStreamline Reporting & Monitoring Process

(Immediate knowing the status)

Off-site Analytic & Diagnosis

User-friendly Interface

Source: https://www.emsd.gov.hk/filemanager/en/content_1148/HVAC_Fault_Reporting_EN.mp4

6D BIM

6D BIM

Campus interactive learning (A.I.)

ABOUT US

9

Smart Technologies on Campus / Institution Buildings

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Smart HVAC System & Lighting System

Occupant activity detection system

(OADC)

Wireless door lock and ID card-key

system

Tablets and mobile apps devices

Attendance tracking system

(counterchecking system)

Auto supply and demand forecasting

and adjustment control system

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Auto/Manual supply and demand

forecasting and adjustment control

Detection/Control Devices

Occupant activity detection system (Auto)

Wireless door lock and ID card-key system (Auto)

Tablets and mobile apps devices (Manual)

Response Devices

VSD for AHU/FCU

T CHW control for floor branches

Auto-reset set-point strategy

for vacant rooms

Auto-standby / auto-partial shut down

strategy for vacant rooms

Inter-operable and detection

between HVAV, lighting and

small power appliances

With photo / daylight sensor for

perimeter zone lighting control

Hz

T

TSPACE SP CO2SPv

v

HVAC ELE

Perimeter

Interior

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Tablets and mobile

apps

Wireless door lock and ID

card-key system

Facilities booking system

Campus map

RFID/QR Code

• Library books

• Portable instrumentation

• NB / tablets

•……

Detection/Control Devices

Campus Information Database

Facial recognition

Central Processing System

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Repair & Adjusting/ Fine-Tuning

Auto supply and demand forecasting

and adjustment control

Auto-reset set-point strategy

Auto-standby / auto-partial shut down strategy

For Vacant

Rooms

For Cool

Season

For Non-Peak

Period

(Weekend,

Sem-break)

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Modification/ Partial Retrofit

Indoor AC unit with VSD FCU and ON/OFF adjustable control

valve

Photo / daylight sensor

window

doorFAUs

corridorCHWS and CHWR floor branch pipe

T

Thermal & audio sensor

Wireless door lock and ID card-key system

T chilled water modulating control unit

Perimeter zone

interior zone

Photo / daylight sensor

corridor

Smart & Dimmable lighting

system control by Tablets/Apps

Smart lighting system control

by Tablets/Apps

Photo / daylight sensor with lighting

dimmer control function for

perimeter zone lighting control

Wireless door lock and ID

card-key systemT CHW control for floor

branches

VSD for AHU/FCU

Occupant activity

detection system

Tablets and mobile apps

devices

Inter-operable and detection

between HVAC, lighting and


Smart HVAC & Lighting System for Rooms cum Occupant Activity Detection System

ABOUT US

15

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Strategies

1. Auto-reset set-point strategy

for Vacant rooms

2. Auto-standby / auto-partial

shut down strategy

For Vacant

Rooms

3. Inter-operable and detection

between HVAC, lighting and


Occupied

Rooms

For Vacant

RoomsOccupied

Rooms

For Vacant

RoomsOccupied

Rooms

4. Chiller Optimisation as per reserved rooms schedule

A B

C

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Operation Mode

Occupant Activity Detection System

Mode of Operation

Name of Sensor “Occupancy” Mode “Standby” Mode “Sleep” Mode

Motion Sensor

Any two sensors receive signal “H”

Receive signal “L” Receive signal “0”

Thermal SensorEither Thermal Sensor or CO2

Sensor receives signal “L”

Receive signal “0”

CO2 Sensor Receive signal “L”

Audio Sensor Receive signal “L” Receive signal “L”

1. Determine the mode of operation

2. Countercheck the appointment schedule with the operation mode

Reserved

Occupancy Standby Sleep

Vacant Reserved

Occupancy Standby

Shut-down

Off

20:00 8:008:00

Appointment schedule

Operation Mode

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Season Control Strategy

Operation Parameter Occupancy Standby Sleep Off

* Space temperature setpoint 24-26°C 26-27°C 27°C Floating

Lighting Normal On Light Level as 50% of

rated by 5 mins.

/Normal Off

Normal Off Normal Off

PC Computer /Projector Normal On

/ Manual Off

Normal Off/ Manual On Normal Off Normal Off

Air-conditioners & fan Normal On Low Low>26 / Normal Off Normal Off

**Fresh air fan Max.>800ppm / Min. Min. Normal Off Normal Off

*** Chilled Water Control valve Normal On>24°C /

Min.

Min.

/ Normal Close<25°C

Min.>26°C

/Normal Close

Normal Close

* For Dry-Bulb Temperature >24°C

** For the subscript, it describes the condition of the environment (i.e. Max>800ppm means turn to maximum level if the CO2 level is >800ppm).

*** For the subscript, it describes the condition of the environment (i.e. Normal On>24°C means normal on if the temperature is >24°C).

Summer mode for different operation mode

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Season Control Strategy

Operation Parameter Occupancy Standby Sleep Off

* Space temperature setpoint 20-21°C Floating Floating Floating

Lighting Normal On Light Level as 50% of

rated by 5 mins. /Normal

Off

Normal Off Normal Off

PC Computer /Projector Normal On

/ Manual Off

Normal Off/ Manual On Normal Off Normal Off

Air-conditioners & fan Normal On Normal Off Normal Off Normal Off

**Fresh air fan Max.>800ppm / Min. Min. Normal Off Normal Off

*** Chilled Water Control valve Normal On>24°C /

Min. >21°C

Normal Close Normal Close Normal Close

* For Dry-Bulb Temperature <22°C

** For the subscript, it describes the condition of the environment (i.e. Max>800ppm means turn to maximum level if the CO2 level is >800ppm).

*** For the subscript, it describes the condition of the environment (i.e. Normal On>24°C means normal on if the temperature is >24°C).

Winter mode for different operation mode

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Chiller Optimisation as per reserved rooms schedule

TDB

Co

olin

g lo

ad

/sq

m

22C

Chiller plant A

COPA

3 chillers2 chillers

Chiller plant B

COPB

2 chillers

1. Determine the cooling load

by the reserved rooms schedule

2. Determine the optimal efficiency

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Advantages of Smart HVAC & Lighting System for Rooms

Connectivity, Mobility,

Availability & AccountabilityPhysical

Security

Energy Efficiency

ABOUT US

22

Conclusion

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Conclusion

Technology Development

•Control Transformation

•Data Storage Transformation

• Future Facility Management (FM)

• Benefit of Future Facility Management (FM)

Smart Technologies on

Campus / Institution Buildings

•Detection/Control Devices

• Response Devices

• Repair & Adjusting/ Fine-Tuning

•Modification/ Partial Retrofit

Smart HVAC & lighting system for rooms cum

occupant activity detection system

• Strategies

•Operation Mode

• Season Control Strategy

•Chiller Optimisation as per reserved rooms schedule

•Advantages of smart HVAC & lightingsystem for rooms

Green Schools 2.0 for Retro-commissioning

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REGISTER NOW FOR FREE

In you are interested, please refer to our website for

details and registration:

http://greenschools2.hkgbc.org.hk/

Engagement Meeting (Pre-recorded video)

Induction Talks (Pre-recorded video)

Professional Talks

Workshop cum Seminars

Green Schools 2.0fo r Ret ro-commiss ion ing

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EMSD RCxResources Centre

HKGBC RCxTraining and Registration Scheme

Enquiry: 3994 8818

Energy Saving Charter & 4T Charter Schemes

http://greenschools2.hkgbc.org.hk/

Utilities Funding Scheme- RCx

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Electricity

Supplier

Funding

Name

HKECLP

Eco-Building Fund Smart Power Building Fund

Energy Efficiency

Projects

•Subsidised amount is depended on the types and scale of projects and

determined based on expenditure, saving and duration of projects but

subject to a cap

•Disbursed on a reimbursement basis

•Provide subsidies for energy-saving improvement works of:-

Retrofitting

RCx

Smart building technologies

Subsidy

Brief

15 Dec, 2020 (Tue)

Your feedback is

important to us!

27https://forms.gle/ZoFUiXZNMMLMvFc69

green schools 2 - rcxrc.emsd.gov.hk

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