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7/28/2019 KTP Hospital Green Technologies
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CNA Group Ltd
23 Mar 2009
KHOO TECK PUAT HOSPITAL
Creating A Green HealthcareFacility
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Unique Green IAQ
Enhancement Technologies
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Complete Sterilization of Hospital Indoor Air First
Hospital in Singapore
Concealed Ceiling Fan Coil
Units are Difficult to Clean
All ducted FCU units are fitted withUVC emitters and radiometerswhich are tracked by IHEMS.
Continuously Running AHUs with
Compact Fins are Difficult to Clean
Large Spacing
Between Coil Fins
Small Spacing
Between Coil Fins
All AHUs are fittedwith UVC emitters
and radiometerswhich are tracked byIHEMS.
All Exhaust Air from Operating Theatres are
Treated with Double Layer of UVC Emitters
UVC-irradiated
sterilized New Air
from OT exhaust isreused to cool thecourtyards toprovide free cooling.
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HVAC System - Habitat for Mould and Microbial Growth
Cooling Coil Completely Blocked
With Fungal Cocktail. Air
Hardly Able To Pass Through.
Concoction ofdirt, bioaerosoland moisture on cooling coil
provide nutrient for mouldand bacteria to grow
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Harnessing the Power of Nature UV Light from the Sun
The suns UVC rays act as a natural outdoor air
purification system, inhibiting the growth of bacteria,viruses, fungi and moulds.
Germicidal UV light from UVC emitters destroys mouldsand microbial growth on wet cooling coils.
Bring crucial improvement to cooling coil heat transfer
efficiency and energy savings.
Improve IAQ and enhance healing and workplaceproductivity.
Eliminate coil washing save water and manpower,
extend coil life.
UVCEmittersInstalledAtAnAHU LethalMagneticWaveforms
EnhancedHealingEnvironment
NaturalSunlight
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Titanium Dioxide Photocatalyst Treatment of
Cooling Coils 1st Application in Singapore
Titanium dioxide when activated byUV lights becomes a powerfuloxidizing agent which:
Converts harmful VOCs (e.g.
formaldehyde) into harmlesssubstances.
Removes odours (e.g. ammoniafrom toilets, musty smell frommoulds).
Kills bacteria, viruses and mould.
Titanium Dioxide Coating on Cooling Coil
Unique Titanium Dioxide (PMI)photocatalytic treatment for thecooling coils to remove harmfulbioaerosol and odours to create afresh, clean and healthy hospital
environment.
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Energy Enhancement
Strategies
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Innovative Control Strategies
Interactive Multi-System Control
Weather-Responsive Strategies Rain Sensing , Daylight Sensing
Demand-Controlled Ventilation CO and CO Sensing
Night Cycle
Night Purge
Occupancy Sensing
Daylight Harvesting
Load Shedding
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Interactive Multi-System Control (IMSC)
FacilityBookingSystem MeetingRoom IHEMS
IMSC involves the use of high-level computer interfaces and business
rules between the various IT systems of the hospital to enhance operationalefficiency and eliminate energy wastage.
One such use of IMSC entails integrating the Facility Booking System withthe IHEMS so that the air-conditioning and lighting systems for all the facilities
(meeting rooms, training rooms, conference rooms and auditorium) will only beturned on during the booked period of the facilities.
In the event that the duration of usage of the rooms is cut short, occupancysensors installed in these rooms will turn off the lights and air-conditioning toprevent energy wastage.
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Weather Responsive Strategy Rain Sensing
A special weather programme will be incorporated into the IHEMS so that on a raining day therain sensor and the weather programme will work hand-in-hand to increase the temperature
setpoint of the indoor spaces to conserve energy and to enhance occupant comfort.
The raising of1C of temperature during raining days will help save between 7% to 8% of the air-conditioning energy.
The IHEMS will also send a signal to the irrigation system to cut off water supply to prevent the
irrigation system from discharging water to the vegetation when it is raining.
IHEMS
Rain Sensor PLC Controller
Adjust Space Temp Higher to
Improve Comfort and Save Energy
Cut off Water Supply to the Irrigation
System When it is Raining
Rain
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Weather Responsive Strategy Photocells and
Daylight Harvesting
KTPH exploits its full daylight harvesting potential by installing photocells invarious parts of the hospital to keep the street, landscape and other exteriorlighting off as long as possible.
The photocells work better than time clocks or time schedules due to the varianceof daylight caused by weather or cloud cover. Photocells save energy bystretching the off time of the exterior lighting.
PLC Controller
IHEMS
Photocell
Landscape and Exterior
Lighting
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Integrated CO and Night Purge System
CO sensors will used to control theamount of fresh air into the hospitalspaces based on the measured COlevel (Maintain at 900 to 1,000 ppm).
This system will be integrated to theNight Purge System to improve IAQas the same OA dampers and exhaustair fans will be used.
PLC Controller
Outside
CO Sensor
OA Damper ActuatorStale Air from Hospital is
Expelled
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Night Cycle
KTPH operates round-the-clock and to keep its energy consumption low,the hospital will operate on an economy mode at night by raising thenight temperature setpoint by 1C from 11 pm to 6 am during which
time the hospital is expected to be lightly occupied.
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Ventilation Control of Car Park Fans
At KTPH the IBMS will deploy smart controls using carbon monoxide (CO)sensors to shorten the operating hours of the car park ventilation fans.
The fans will only come on at CO level of15 ppm and above.
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Occupancy Sensing
Occupancy sensors will be installed in rooms which are sporadically occupied(meeting rooms, training rooms, gyms, etc) to automatically turn off lightswhen the rooms are vacated.
Ultrasonic Infrared
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Low-Energy Green Operating Theatres
Traditional method
Continual state of readiness
15-20 air changes / hour
High energy cost
New method adopted at KTPH
Heat recovery via heat pipe technology
Variable air volume fan control
Lower air changes / hourand highertemperature during non-usage
Full / Economy operation
HEPA and UVC air sterilizers
Unique double-UV irradiated newexhaust air for free cooling ofcourtyard first in Singapore.
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Innovative VAV Control Strategy First in Singapore
Fan Pressure Optimization for VAV Systems
As cooling loads change, VAV terminals modulate to vary airflowsupplied to the zones.
This causes the pressure inside the supply ductwork to change. In manysystems, a pressure sensor is located approximately two-thirds of the
distance along the main supply duct.
The AHU varies the capacity of the supply fan to maintain the staticpressure in this location at a constant set point.
With this approach, however, the system usually generates more static
pressure at part load than necessary.
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Fan Pressure Optimization for VAV Systems at KTPH
When communicating controllers are used on VAV boxes, it is possible tooptimize this static-pressure control function to minimize duct pressureand save fan energy.
Each VAV-unit controller knows the current position of its air-modulationdamper. The IHEMS continually polls these individual controllers, looking forthe VAV terminal with the damper that is open the widest.
The supply fan's set point then is reset to providejust enough pressureso that at least one damperis nearly wide open. This results in the supplyfan generating only enough static pressure to push the required quantity of
air through this "critical" VAV-terminal unit.
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Fan Pressure Optimization for VAV Systems at KTPH
Reduced supply-fan energy use. At part-load conditions, the supply fan is able tooperate at a lower static pressure and consume less energy.
Lower sound levels.The supply fan does not generate as much static pressure
and typically generates less noise. In addition, with lower pressures in the supplyduct, the dampers in the VAV boxes open wider, resulting in less regeneratednoise.
Reduced risk of fan surge. With the fan operating at a lower pressure whendelivering reduced airflow, the fan operating point is kept farther away from thesurge region.
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Fuel Cells Green Back-up Power Solution for IHEMS
Cabinet Housing for
Hydrogen Cylinders
Fuel Cell
Fuel cells are cost-effective, reliable and emit no pollutants. Unlikebattery-backed UPS, fuel cells are environmental friendly no toxicbattery waste polluting the environment. As fuel cells are powered byhydrogen, back-up power duration can be stretched indefinitely witha continuous supply of hydrogen, a distinct advantage over batteries.
Green Back-up Power
for Integrated Hospital
Energy Management
System
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State-of-the-Art Converged
Network, IT and InfocomTechnologies
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Creation of A Hassle-Free Hospital
PlannedOutpatient
Patient
Admission
PatientCall
SentinelEvents
PatientTracking &Resource
Optimisation
Medication
&Discharge
Patient-Centric Workflow
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Creation of A Hassle-Free Hospital
Admissions
OutpatientFacility
InpatientFacility
ClinicalServices
(Radiology, etc.)
DataCenter
EmergencyFacility
ConnectedHealth Environment
Converged
Network
Surgery
Pharmacy
Energy Efficiency
Patient Convenience
Process Integration
Resource MaximisationHi-touch
Flexibility
First Hospital in Singapore to Adopt the Converged Network Platform
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End-Point Devices for A Hassle-Free Hospital
Infocomm Devices
Building Systems Clinical Systems
Laptops/PCs IP Phone
(As a point-of-care device) Wireless IP Phone Nokia Dual-mode Video Conferencing
SmartBed Patient Monitoring Devices Kiosks
Digital Signage
Video Surveillance Kiosks Carpark Door Access/Alarms Lighting Air-con Elevators
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Smart IT Applications
ServiceCenter
BroadbandUnified
Communications
WiFi
IPSurveillance
IPSecurity
RadioNetwork
AccessServices
SelfhelpKiosks
DigitalSignage
MealOrder&
Delivery
IntegratedFacility&
EnergyManagement
AudioVisualSystems
forSurgical
Training
SmartPowerMeters
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Point of Care IP Telephony
We have engineered and extended an IP phones
functionality to include selecting food menu,adjusting air-conditioning or lighting settings,receiving signals from biomedical monitoringdevices or even extracting a patients clinicalinformation.
This opens up opportunities for KTPH to servepatients better, faster, at lower costs andhigher levels of convenience.
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Facilities Management
Web-based Building
Management
HVAC Control
Temperature
Monitoring & Fire
Alarm Systems
Sustainability /
Energy Management
Automated Event
Management &
Escalation
Metering & Billing
Intelligent Lighting
Control
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Benefits of Converged Integrated KTPH
CAPEX Reduction
One backbone, cabling
Optimization of resources
OPEX Reduction
Enhanced energy performance
Maintenance optimization
Interoperability, Scalability and Expandability Reduce cost of changes
Improved Business Performance
Facilitate transformation ofdata to informationto knowledge to wisdomto action toimprovement
Optimum comfort and healthy environment
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