Energy Management In Telecom Industry Engineering Essay

Published: 2020-07-20 15:00:07
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Telecom industry in India has undergone a revolution in the recent old ages. The state is graded 3rd worldwide in footings of holding the largest telecommunication web, after China and USA. With the ongoing investings into substructure deployment, the state is projected to go the 2nd largest telecom market globally in following few old ages.
Harmonizing to our new analytical survey on the sector ‘Indian Telecom Analysis ( 2008-2012 ) ‘ , nomadic telephone, in peculiar, continues to fuel growing of the Indian telecom sector, with nomadic endorsers projected to turn at a CAGR of about 15 % between 2009-10 and 2013-14. Other sections of the industry such as Internet and broadband are besides anticipated to witness immense growing rates in footings of both subscriber add-on and web substructure deployment over the forecasted period.
Teledensity in India has improved in the recent old ages and reached 26.2 in the financial twelvemonth 2007-08, owing to bettering web substructure. The launch of progress telecom services like 3G and IPTV will besides drive the growing in Indian telecom endorser base over the forecasted period. Furthermore, nomadic French telephone market besides expected to register a robust growing in close hereafter.
The Telecom Giants are expected to demo a down bend with every passing one-fourth. The new recommendation by TRAI ( Telecom Regulatory Authority of India ) badly causes menaces to the Telecom giants. The strong recommendation to supply net telephone would cut down the ARPU ( Average Revenue Per User ) significantly. The Telecom companies have no other option but to go on to cut down their naming rates and fall back on VAS ( Value Added Services ) .
Merely Low ARPU ( Average Revenue Per User ) users left
All the major metropoliss in India have already been covered, these metropoliss would be hold the high ARPU users. The pick endorsers have already been added and from now on as the companies continue to come on inward into the rural countries, the ARPU per user would fall significantly. Since now the metropoliss have been covered the lone manner to spread out the user base is by come ining the rural countries. Every new endorser from the rural country would cut down the current ARPU for the telecom service suppliers. The companies have no other alternate so to bank on VAS ( Value Added Services ) to keep their ARPU.
High End Users
We expect the highest ARPU users to switch to net telephone foremost. These would be the users with the needed French telephone and technological cognize how to switch to net telephone. This would hit the Telecom Operators severly as these would be endorsers bring forthing the highest gross. Net Telephony would be able to supply the same services as the telecom giants but at a fraction of the cost. Since the Telecom giants have already spent the Capital to put up the substructure, they would non be willing to supply net telephone over dark to avoid a drastic autumn in gross. The Telecom giants have already started switching their focal point on VAS to prolong their ARPU.
2G – 3G – 4G
As we progress from 2G to 3G the ability to reassign and have informations along with voice improves dramatically. We are acquiring better connectivity to the Internet with every new French telephone and a displacement in engineering. Since the VoIP companies can supply the same services as the telecom operator without necessitating immense substructure, it posses as a immense potency menace to the bing Giants.
In India, Telecom Operator ‘s ARPU ( Average Revenue Per User ) is coming down twelvemonth over twelvemonth. Owing to which rationalisation of operating costs of webs, has emerged as top precedence for the Telecom Operators. Operators are good cognizant that their following stage of rollouts will go on in semi-urban and rural countries, where grid power handiness state of affairs will non be favourable. For the tubes and urban countries, pull offing Telecom Network Infrastructure is making batch of force per unit area on the bottom-line of the Operators.
For case, the increasing land / rooftop rents for cell sites. Besides guaranting regular and uninterrupted power supply, regular care and security of the tower, are disputing undertakings. Besides, there is a batch of bitterness constructing up among consumers and civic groups, because of the pollution the cell sites cause. Those solutions that require less power and generate less pollution are necessary to gain people ‘s good will.
After understanding and analysing this state of affairs, Energy Management is taken up as an of import enterprise at GTL Infra, as most of future axial rotation out is in rural India.
Efficiencies through Energy Management enterprises at GTL Infra will non merely better Operational net incomes but will besides do sites more attractive for Wireless Telecom Operator.
TELECOM INFRASTRUCTURE
A telecom substructure consists of Passive substructure and Active substructure.
Passive substructure:
Tower
Shelter
Foundation/Civil work
Outdoor/Indoor electrical
Power supply/ Diesel Generator ( DG ) set
Optical cables/Ducts
The cost of Passive Infrastructure constituents forms 65-70 % of the cost incurred on puting up a Cell Site and its sharing helps Operators to cut cell sites capex cost by 25-40 % and opex by around 30-35 % .
Active substructure:
Electronic equipment
Antennas
TRAI has recommended sharing of active substructure constituents like aerials, feeder overseas telegrams, nodes, wireless entree web, transmittal systems and backhaul, with the exclusion of spectrum.
Rooftop tower
Land base station
ENERGY Consumption:
The chief power consuming devices are placed in shelter. ( Refer Fig.3 )
They are:
1. Air Conditioner ( A.C )
2. Base Transceiver Station ( BTS )
3. Lighting
The per centum power ingestion of these devices is as follows:
These devices are energized through:
Electric Board ( EB )
Diesel Generator ( DG ) and
Battery
Electric Board:
Electric Board is a province ain board that provides the electric supply. The supply is provided at a fixed cost, for e.g. province electric board of Maharashtra provides the supply at Rs. 6.5 per unit.
Diesel Generator:
Diesel Generator set is provided, as a backup power beginning to provide to the power demands of the Telecom equipment, air-conditioning unit etc. , in instance of brinies failure. The generator set provided is of suited evaluation as per the burden demands. The cost per unit for DG is Rs.13.
Battery:
Batteries used for float applications are usually 2V/24 cells – 48 V. These batteries are formed by linking 24 cells or cell faculties each of 2 V of the rated capacity in series as per TEC latest GR.
The batteries are charged at the same time with the aid of DG or Electric Board when either of them is used as a supply unit for the site. Therefore the cost per unit for battery is considered to be negligible. The battery can be used for upper limit of 4 hour since it takes 15 hour to be to the full charged.
ENERGY MANAGEMENT AT GTL
Energy direction areas-demand
Ambient Cooling
Air con Saver
Line Conditioner
DC energy Monitoring
PIU
Cyclic operation of ACs & A ; air con optimisation
Excess Rectifiers Removal
Barricading cool air escapes
Energy direction areas- supply
DG Downsizing
Use Of TOD Meters for EB metering
Energy Saver
Reducing contract demand & A ; therefore fixed demand charges
Energy direction areas- procedure
Daily centralised Diesel make fulling Monitoring
Energy Conscious O & A ; M
Proper preparation of O & A ; M Technicians
Better Housekeeping
Barricading escapes /Pilferages
EB measures tracking
Energy direction areas- new engineerings
New Energy Efficient merchandises including Shelters
Web Cam Monitoring
AC every bit good as DC Energy Monitoring remotely through NOC
Energy direction areas- renewable
Solar Wind Hybrid supply
Wind Farm
Bio-Diesel usage
Energy direction techniques
Consumption is compared with benchmarks & A ; high consuming sites are scrutinized in deepness.
Depending upon entire DC current demand & A ; battery AH capacity DG on-off agenda & A ; no of rectifiers required is worked out
Air con temperatures are controlled & A ; proper optimisation is obtained
Any care jobs are reported to O & A ; M for action
Procedure betterments & A ; new engineerings recommended to client
Any suspected abnormalities are instantly reported to O & A ; M every bit good as client representative.
Customer is recommended about Renewable energy beginnings possibility
EM hearers on a regular basis visit the sites to supervise energy public presentation
Evaluation of recommendations execution
Energy ingestion supervising on month on month footing
Concentration on bad acting sites
Product installing & A ; EM site visits monitoring
Undertaking HIGHLIGHTS:
The undertaking is divided into two parts:
Energy Management Solution for efficient free chilling system
Energy Management Solution for free chilling standalone merchandises
Part 1:
ENERGY MANAGEMENT
Solution FOR EFFICIENT FREE COOLING SYSTEMS
Efficient free chilling systems
Existing air conditioning system
The bulk of chilling and warming installings are based on re-circulated air systems, where air at variable ambient and return temperatures enters via canals and fans to one or more air managing units.
The air is so filtered and cooled/heated ( when necessary ) , by infrigidation compressors and boilers and eventually returned.
Irrespective of what is go oning to the temperature outside of the shelter, the chilling system will ever run in this mode and the compressors will run whenever there is a chilling demand to keep the set point of 22A°c. Increasing or diminishing the shop operating temperature by 1A°c will ensue in a 4 % addition in energy ingestion and costs.
The solution to interrupting this rhythm is merely to increase the sum of fresh air being brought into the shelter, therefore using a procedure known as free chilling.
The free chilling solution
Free Cooling offers immensely improved air quality. It is triggered when the external ambient air is at a lower temperature than the internal temp, pulling ‘fresh air ‘ into the learned country through the airing system. This consequences in important energy nest eggs, reduced energy measures and lower care.
What is free chilling?
It provides a agency of keeping or cut downing the internal temperature without the demand to run the compressor portion of the chilling system.
Free chilling can happen when the temperature of the external ambient air is less than that of the indoor air and this ice chest external air is transferred into the shelter, either straight or indirectly.
When the outside air temperature is higher than the room temperature in summer, the air blending system will modulate to the minimal outside air place to maintain the burden on the air conditioner to a minimal whilst guaranting sufficient fresh air is still introduced into to the shelter to run into the demands.
Direct benefits
aˆ? Reduction in compressor running hours
aˆ? Reduction in energy use and so running costs
aˆ? Improved air quality for a big portion of the twelvemonth by the debut of greater measures of fresh air.
Indirect benefits
aˆ? Reduced life rhythm costs by cut downing compressor tally hours
aˆ? Increased life rhythm of compressor
Since air conditioners are responsible for 60 % of the energy ingestion, GTL is looking at assorted free chilling systems and preciseness air conditioners to cut down the energy ingestion.
A decrease of 15-20 % in 500 energy ingestion can be achieved by deploying free chilling systems at the bing shelters.
My undertaking trades with the choice of the seller with the best free chilling system in footings of specifications and commercial viability for telecom towers. The four companies considered are:
Telepacs by Bluestar
Liebert EFC by Emerson
Uniflair
Eaton Williamss
BLUESTAR
Blue Star ‘s Precision Air conditioners ( by and large know as PACs or CRACs ) are ideal chilling solutions wheresoever uninterrupted, day-and-night, precise control of temperature, humidness and filtered air is desired. Modular in design, Blue Star ‘s PCPAs are manufactured utilizing state-of-the-art techniques from an ISO 9001 works at Dadra, under proficient coaction with Eaton Williams of the UK.
Highly energy-efficient and designed for 24×7 operations, utilizing an open-architecture control protocol, these air conditioners offer really low cost of ownership and subsequent up step.
Features
High Energy Efficiency
Rapid Dehumidification
Ease of Care
Low cost of ownership
Designed for 24×7 twelvemonth unit of ammunition operation
Option for tropicalised capacitor
Hot gas reheat
Standard up-flow and down-flow theoretical accounts available
Chilled H2O version available
Telepac shelter – characteristics
Scope: 2.5, 3, 3.5 and 4 TR
Option of mounting as Unitary or Split system
Cooling capacity rated at 46° C ambient
Energy efficient Scroll compressor ( high EER )
Powder coated GI sheet cabinets for longer life
Microprocessor based accountant to fit any alone demand
High reasonable burden factor
Inbuilt mistake lumberman for failure analysis
Customized designs can be supplied to specific demands
Telecom shelter – characteristics
Double wall building cabinet shelter
Inbuilt redundancy
Ideal for VOIP, CDMA, GSM and WLAN applications.
EATON WILLIAMS
Ctxi air managing units- characteristics
CTXi units are designed as extremely dependable air managing systems for telecommunications equipment suites and other similar applications.
They remove heat additions utilizing available outside air and a stopping point coupled, direct enlargement infrigidation system.
The supply fan draw air from either inside the cabin, ( infrigidation chilling ) , or fresh air from outside the cabin, ( free chilling ) . It passes through the filter and evaporator spiral and is discharged from the underside of the unit and into the room at floor degree.
The unit is self-contained, consisting a supply air fan, damper, capacitor fan, compressor, capacitor spiral, evaporator spiral, filters, microprocessor accountant and all infrigidation circuit constituents.
The control system is via a Mod Bus System or other proprietary protocol.
A trickle tray is provided to roll up any condensate forming on the evaporator spiral. The waste pipes are trapped internally in the unit and are led to the underside where it is discharged.
Free chilling manner
During free chilling manner, the outside air enters the unit through the Louvre. From here, the air passes through a pre-filter, chief filter, evaporator before being discharged from the underside of the unit into the room at floor degree of the cabin, from where it is distributed into the room infinite to be cooled. The air returns through the forepart of the unit and is discharged through the capacitor spiral into the exterior.
Electric warmers are fitted in order to increase the air temperature during free chilling manner at low ambient temperatures.
Refrigeration chilling manner
In infrigidation chilling manner, the damper is closed and re-circulates the cabin air through the chief air filter and the evaporator where heat is removed from the air, before it is distributed into the room infinite to be cooled. Air from the exterior is drawn through the Louvre and capacitor, where the heat addition is removed and discharged back into the exterior.
Emergency chilling
In the event of a brinies, ( 230Vac ) power failure, the Unit will go on to run in an exigency free chilling supply manner, utilizing 48Vdc battery supply.
free chilling unit mechanism
UNIFLAIR
XMF series
Features
Monoblock conditioning units to be installed inside the air conditioned room.
These units are ideal when the capacitor can non be fitted outside or where edifice work can non be carried out.
The centrifugal air capacitor is built into the unit ‘s construction, and the units are supplied ready for installing, wholly assembled and filled with refrigerant in the mill, where they are wholly calibrated and the electric and chilling systems are tested.
Installation is really simple and connexion to the exterior can be done utilizing stiff or flexible pipes which can be fitted to the window.
Free chilling mechanism
Emerson
Liebert EFC
EFC is the newest packaged, direct enlargement air conditioner scope, with constitutional air-cooled capacitor for out-of-door installing.
Indoor air supply is down flow designed to optimise air distribution with telecommunication equipment and cut down racks ‘ nucleus temperature.
Low out-of-door noise makes it particularly suited for urban installing within telecommunication webs. All safety devices are included and pre – set.
Displacement Model EFC units include free chilling as standard device and offer other optional characteristics such as Electric Heating. 40V DC Emergency Cooling, Clogged Filter dismay, fast plug connections, power supply, dismaies, remote show, etc.
Applications
Outdoor equipment suites
Microwave/Satellite Earth Stations
Paging suites
Samarium centres
Network direction centres
Small equipment suites
Mobile base Stationss and control centres
Features
aˆ?A Emergency CoolingA
aˆ?A Cost Effective CoolingA
aˆ?A Uniform Air DistributionA
aˆ?A Fresh Air Free CoolingA
aˆ?A Efficient DC Plug FanA
aˆ?A Faster Start-upA
aˆ?A Low NoiseA
aˆ?A Continuous OperationA
aˆ?A Vandal-proofA
aˆ?A Invest As you – GrowA
COMPARISON 1
BLUESTAR EMERSON
general information India United States
proficient informations
Description
Unit of measurements
TELEPAC
LIEBERT EFC
Nominal chilling capacity
TR
3
1.5
NO. of refrigerating circuits
none
2
N.A
Airflow/ Circuit
CMC
1100
N.A
Power supply
V/PH/FZ
415/3/50
230+/-10 % /3/50
overall dimensions ( WxDxH )
millimeter
665x611x1065
1132x603x1867
Weight
kilogram
150
Compressor
a. Measure
NO./ckt
1
1
b.Type
reciprocating
copeland coil
c. refrigerant gas
R-22/R407c
R22
d. theoretical account no.
ZR22-K3-PFJ
e. power
Evaporator subdivision
a. NO. of spirals
NO./ckt
1
N.A
B. Tube stuff & A ; OD
Cu tubing
N.A
c. Weight ( gross )
Kg
123
N.A
D. Type
five and tubing type
e. Face country
Sq.ft
3.61
distilling unit
a. NO.of spirals
NO./ckt
1
B. Type
Cu tubing
Spartan/Crompton
c. Weight ( gross )
Kg
164
Fan subdivision
a. Type
centrifugal stopper fan
B. Type of discharge
Downflow
c. No. of impellers
1
d. Total capacity
CFM
900
e. Power consumed 48V District of Columbia
KW
0.1
Filters
a. Type
HDPE Washable type
B. No of filters
1
c. Efficiency
80 % , 20 micrometer
stuff
epoxy coated, steel
COMPARISON 2
EATON WILLIAMS UNIFLAIR
CTXi-7
XMA-XMF-0401
Description
Unit of measurements
Nominal chilling capacity
TR
7kw ( 1.99 tr )
10.8 kilowatt ( 3.07tr )
Airflow/ Circuit
CMC
3700 m3/h
power supply
230/1/50
overall dimensions ( WxDxH )
millimeter
650x2100x620
1200x450x1920
Weight
Kg
270
Compressor
a. Measure
NO./ckt
b.Type
hermatic coil
c. refrigerant gas
R407c
d. power
3kw
Evaporator subdivision
a. NO. of spirals
NO./ckt
1
2
distilling unit
a. NO.of spirals
NO./ckt
1
Fan subdivision
a. No. of impellers
2
Filters
a. Efficiency
EU2
Part 2:
Energy Management Solution FOR STANDALONE FREE COOLING UNIT
STANDALONE FREE COOLING UNITS The 2nd portion of my undertaking trades with fixing a comparative survey about standalone free chilling units which facilitate free chilling, cut down energy ingestion and can be integrated with the bing air conditioner in the shelter.
These are standalone merchandises which provide free chilling and therefore supply important nest eggs on the energy measures.
The assorted sellers are:
Global towers
Zapp elektroniks
Dantherm
Pragati electrocom
Stulz
Acme
Global Tower
GLOCOOL
Free chilling solution for telecom sites
Efficient, energy economy and protects environment.
Free from Freon gas
Designed for easy installing in bing shelters
Working
Hot air gets displaced through an air mercantile establishment unit and the cool air outside is sucked in through the air recess unit filters.
Has its ain intelligent microprocessor based accountant unit with 4 figures LED show n map buttons.
It continuously monitors the temp inside the shelter n vitamin D ambient temp outside the shelter.
Starts runing when the outside ambient temp falls below vitamin D set point, say
24-25 deg C
The air conditioners are switched off and the outside air is sucked in n hot air is sucked out.
Controller maps
Proctors the failure of the AC by feeling really high temp inside N goes into exigency chilling manner n prevents stumbling of the BTS
Besides monitors the comparative humidness ( RH ) inside the shelter n switches off the unit if it exceeds beyond 85 % RH, therefore avoiding possibility of condensation inside the shelter, on high humidness yearss in the coastal countries.
Besides has a characteristic to detain generator get downing as per the prevailing battery province of charge status n room temp set bound thereby lending to extra nest eggs in the operating cost.
ZAPP ELEKTRONIKS
Free air coolingA means utilizing ambient air to chill. The system is hence far more economical in usage than active cooling.A Free air coolingA is controlled airing and you will typically salvage up to 80 % energy ingestion for nomadic base Stationss in your telecom web for chilling by exchanging to free air chilling.
WHY FREE-AIR-COOLING?
Regardless of the inside temperature precedence it is in most instances sufficiently cold outside for FreeAirCooling to be the right option for chilling nomadic base Stationss. Mobile base Stationss which use air-condition as the lone chilling are provided with expensive service trips and besides high electricity measures.
Benefits
reduced energy cost
lower C emanation
creates good planetary environment
good environment for care forces
smart filter solution provides longer service intervals and lower energy costs
Tax return on investing ( ROI )
Installation cost ( Capex )
Care cost ( Opex )
Runing cost ( Opex )
PRAGATI ELECTROCOM
Free Cooling System
Free chilling is an economic method of utilizing low outside air temperature to chill the inside air of an equipment room. This helps in salvaging energy by cut downing running clip of Air conditioner fitted in the equipment room. The solution can be deployed for the telecom shelters with or without holding proviso for air conditioners.
The system senses shelter temperature, ambient temperature and comparative humidness. Based on the logical conditions, it provides suited end products in the signifier of 48V DC supply to ventilator fans and PFC for air conditioner operation.
When ( Tin & gt ; Temp set ) & A ; { ( Tin-Tamb ) . Temp Diff Set } & A ; ( RH, Set RH ) , 48VDC is available at Output-1 and 2 to run two fan arrays. Simultaneously, PFC status is available to maintain air-conditioners ( if deployed ) in off place.
When ( Tin-Temp Set ) & A ; { ( Tin-Tamb ) & gt ; Temp Diff Set } & A ; ( RH.Set RH ) , 48V DC is non available at Output-1 and 2 to run two fans but PFC status is available to maintain air-conditioners ( if deployed ) in on place. Air conditioners take attention of humidness control while in free chilling option ; immersion of humidness is limited by the offered system.
Features
Reduces electric tariff 25-25 %
Reduces wear and tear of air-conditioners due to really less operation
Very low power ingestion around 100-200w
It monitors shelter inside, outside temperature and outside humidness
Controller allows AC operation merely in instance outside temperature is high and humidness Is within specified bound
Free chilling increases the life of batteries and other electronic merchandises
Long service intervals
Distant monitoring through TCP/IP modem ( optional )
Inbuilt AC accountant
DANTHERM
Smartvent
The SMARTVENT Series is a new type of clime control solution, which improves the overall energy efficiency and reduces the operational cost of critical electrical and electronic equipment.
The SMARTVENT Series innovatively applies free chilling clime control to enclosures already installed with air conditioners. SMARTVENT is able to salvage power ingestion while keeping smooth operation of electronic equipment through maximal use of the difference between internal and out-of-door temperature.
BenefitsA
Energy efficient chilling solution – more than 50 % compared to AC
Positive force per unit area design prevent dust
Advanced control maps
Easy installing and automatic operation
Easy care through gap in the forepart door
Failure end product and communicating options
Humidity control
Can be combined with ( bing ) air conditioner solution
Lifetime & gt ; 10 old ages – lower limit care
Environmental friendly -RoHS compliant
Safety and burglar cogent evidence design – no external prison guards
Immune to caustic environments – IP55 and Salt fog tested
Variable warming & A ; chilling Settings
Additional optional characteristics on petition
Application
Radio base Stationss / Telecom shelters / Containers
Indoor cabinets / Outdoor cabinets
Power supply cabinets / Battery cabinets / Rectifier cabinets
Network exchanging suites / Computer suites
Server farms / Rack chilling
Smartvent 230
Free chilling mechanism
STULZ
Free-Air – Free chilling for base Stationss
Wherever shelters and exchange cabinets already have conventional comfort air conditioning, the add-on of a Free-Air chilling unit makes a immense difference to operating costs.
The system faculty takes over the control of the bing comfort A/C units and adds economical direct free chilling to the energy-intensive compressor chilling map. Whenever the ambient temperature allows, Free-Air is activated and the comfort A/C units are switched off.
Free-Air has been exhaustively tested, is simple to put in, ready for operation instantly and easy to keep.
Stulz free chilling unit-energy economy graph
Acme
FCU reduces the AC running hours on the telecom site whenever ambient temperature is lower than the shelter temperature.
Accountant characteristics
Can command upto two AC and one free chilling unit
Temperature control
Humidity detector
Structural characteristics
Wall mounted unit
Front discharge
Easy instllation, care & A ; service
Operational characteristics:
Air intake from ambient
Air circulation in the shelter
Emergency chilling
COMPARISON 1
Company
Global Tower
ZZAP ELEKTRONICS
COUNTRY-ORIGIN
India
Croatia
Merchandise
GLOCOOL
FREE AIR COOLING
Description
Input electromotive force
48 Volts DC nominal
48 V DC
[ scope 36 to 62 Vs ]
ambient temperature
minus 15 to 60
minus 25 to + 60
Detectors
shelter temp
indoor temp detector ( tu )
ambient temp detectors
out-of-door temp detector ( television )
type PT 100
Accuracy
0.5 C
1 C
End products
stray digital end products
2 relay end products
for control of shelter AC
Relay
OEN-240V AC
2 relay end products
Display
LED show
LCD show
16×2 alpha-numeric characters
settable parametric quantities
N.A
5 temp parametric quantities
1 timer for web supervising
Airflow
1920 three-dimensional meter/ hr
N.A
Mounting
wall
wall
Weight
30.40 kilogram
1.5 kilograms approx
dimensions
air input / end product unit
a. breadth
595/355 millimeter
185 millimeter
b. deepness
112/66 millimeter
213 millimeter
c. tallness
595/355 millimeter
105 millimeter
power ingestion
105 Watts
N.A
COMPARISON 2
Company
PRAGATI ELECTROCOM
DANTHERM
COUNTRY- ORIGIN
India
Denmark
Merchandise
Free Cooling SYSTEMS
SMARTVENT
Description
Input electromotive force
24/48 V DC
220/380 V AC +/- 10 %
ambient temperature
minus 25 to + 60
minus 40 t0 + 55
Detectors
temp inside shelter ( Tin )
N.A
temp outside shelter ( Tamb )
humidness outside shelter ( Tamb )
Accuracy
N.A
N.A
End products
24/48 V DC for 2 fans
N.A
PFC for aircon shift
Relay
N.A
N.A
Display
LCD show ( 16×2 )
N.A
company name, day of the month, clip, RH, Tin & A ; Tamb
settable parametric quantities
day of the month, clip, Tin set, Tdiff set, RH set
N.A
Airflow
N.A
250-3000 metre cube/hr
Mounting
wall
side/door/wall
Weight
1.5 kilograms approx
30-120 kilogram
dimensions
a. breadth
220 millimeter
320-1800 millimeter
b. deepness
50 millimeter
95-550 millimeter
c. tallness
250 millimeter
275-2000 millimeter
power ingestion
N.A
62-600 Watts
COMPARISON 3
Company
STULZ
Acme
COUNTRY- ORIGIN
Germany
India
Merchandise
FCS/FCB 350
FCS/FCB 600
FCU_230 V AC-2000 CFM
FCU_48 V DC- 1000 CFM
Description
Input electromotive force
48 V DC
48 V DC
230 V AC
38-57 V DC
Airflow
1050 metre cube/ hour
1724 metre cube/ hour
2000 CFM
1000 CFM
Mounting
outside the container
outside the container
wall
wall
Weight
50 kilogram
70 kilogram
50 kilogram
30 kilogram
dimensions
FCS/FCB
FCS/FSB
a. breadth
730/720
730/720
950 millimeter
625 millimeter
b. deepness
609/602
609/602
500 millimeter
608 millimeter
c. tallness
682/604
682/604
575 millimeter
568 millimeter
power ingestion
36 Watts
120 Watts
300 Watts
200 Watts
Recommendation
Based on the above survey, UNIFLAIR free chilling system was installed on test footing at one of the GTL sites in ladivali
Energy audits were carried out and the consequences are anticipated which included supervising the ambient and shelter temperature, the BTS and A/C burden and the yrb stages
As for the base entirely free chilling units, GLOCOOL which is a merchandise of GLOBAL TOWERS is the most commercially feasible and besides gives maximal energy nest eggs of up to 50 % when the conditions are favorable
decision
Since air conditioners are responsible for most of the energy ingestion, efficiency in chilling solutions can drastically cut down the energy measures
From the energy direction position we look at all the possible options available to cut down the energy use and do certain that the options are commercially feasible
Therefore efficient free chilling systems and free chilling units can be deployed at the assorted sites in India, where conditions are favorable, thereby cut downing the energy disbursals and besides minimising the C emanations
In the long tally free chilling systems will be a great plus.
ANNEXURE – I
ARPU: Average REVENUE PER USER
NTP: NEW TELECOM POLICY
WIMAX: WORLDWIDE INTEROPERABILITY FOR MICROWAVE ACCESS
IPTV: INTERNET PROTOCOL TELEVISION
GSM: GLOBAL SYSYTEM FOR MOBILE
CDMA: CODE DIVISION MULTIPLE ACCESS
CAPEX: Capital Outgo

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