EAS Report ICICI Videocon Towers Delhi

8/19/2019 EAS Report ICICI Videocon Towers Delhi

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CHAPTER – 3

ENERGY C ONSERVATION O PPORTUNITIES (Observations, Field Trials, Analysis and Key Result Areas)


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3.1 INTRODUCTION

The study of the utility operations, data collection, observations, field trials andanalysis for various areas at ICICI Bank, Videocon To e!, De"#i wasundertaken keeping in view the energy scene, focus areas elaborated in theprevious chapters and with a view to identify energy conservationopportunities in the sa e! The basis for this is the orientation visit,discussions with the engineering personnel and the agreed plan for datacollection " field trials! All these trials were undertaken at nor al operatingconditions! Also the data was so generated that erratic or absurd values aredeleted and only data for nor al operating conditions were taken for analysis!#aving potential is calculated on present electricity rates!

As highlighted in $hapter % &, electricity is the ain pri ary energy forcontributing to the total energy bill! 'ence, the focus of the study was on thissector! The study was therefore, devoted to analysis of operations and a or e uip ent*s consu ing electricity!

$o ercial pre ises have the potential to consu e substantial a ount of energy and other resources! +nefficient utilisation practices can lead to e cesswaste! The goal of an energy audit is to identify these wasteful practices andsuggest ways to i prove! The role of an energy auditor is to showparticipating offices the link between actions taken in the office and their effect on the environ ent!

3.$ ENERGY CONSERVATION A%ARENESS

Awareness of the agnitude of energy wastage*s needs to instilled in the indsof not only the top and iddle anage ent level but it is of e tre ei portance to instil the sa e in the inds of the operating people who areactually consu ing a or part of the total energy! #o e of the ethods toachieve these ob ectives are-

− $oin appropriate slogans and display the sa e at i portant places and near strategic e uip ents!

− $onduct regular weekly eetings and brief the operating staff about the loss or gain on account of the energy uses in that period!

− Open a sche e for obtaining suggestions for conserving energy!− .isplay regularly the usage of energy!

3.3 E&ECTRICA& ENERGY

3.3.1 T!an'(o!)e!* Ca+aci - U i"i'a ion

The /ideocon tower occupied by +$+$+ is owned and leased by 01s /ideocon+nd! 2td! 01s /ideocon aintains the air conditioning and A'3 syste s and


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bills electricity consu ption charges and aintainance charges! Thetransfor er at /ideocon tower is under /+2*s ownership " supervision! Also,since few other offices have also been leased part of the pre ises and sharethe power de and, a detailed study of transfor er loading and de andregistered could not be conducted!

3.3.$ /a0i) ) De)and Con !o"

• 2oad anage ent basically ai s at i proving the syste load factor and or opti ising a i u de and! The average actual load factor for +$+$+0ahala i was 4&5! 2oad factor is a easure of utilisation of available

contract de and! The load factor is e pectedly low since the office hours arearound 6& 7 68 hours in a day only with few fi ed loads running throughoutthe day!

Thus,

2oad factor 9

..)(..3024 F P xdemand contract or recorded D M xdays xhrsmonth per kwh

−−

• The peak de and is easured by taking half hour averages! +n a onth (:&;hrs), there would be 644; easure ents! The highest easure ent will bechosen as the peak de and! The total energy consu ption deter ines theaverage load!

• The a i u de and depends on the si ultaneous running of variousachines of the plant at peak period!

• The present a i u de and varies fro 6;;; to 64


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progra ed to switch%off non essential but substantial loads, when apredeter ined de and is likely to be e ceeded! #i ple syste s giveaudible1visual alar s, sophisticated syste s provide a wide variety of controloptions! +n general, the syste s can provide the following facilities-

a! Accurate prediction of the de andb! raphical display of present load and available argin to peak loadc! /isual and audible alar sd! Auto atic shedding of loads in a pre%deter ined se uencee! Auto atic restoration of loads (at e tra cost)f! Recording and etering facility (at e tra cost)

•

The peak de and occurs during peak occupancy when all ter inals areoccupied and with higher a bient te perature leading to operation of all A$plants!

• Appro i ate cost of installing a de and control eter is Rs! ;!:< lakh! Bith aregistered de and of 6:>: K/A for =une &;;: and the units consu ed asC,:;,;;; the average power consu ption is 6D4: kwh (:; TR! The specific power consu ption for package unit is about 6!&&kwh1TR based co pressor loading!

The chilling plant co prises of three co pressors having separate circuits with atotal of 6; air cooled condenser fans! Gach circuit has a co pressor of >;, >;" 48 TR each " a condenser coil! The air cooled condensers are regularlycleaned every onth!

b) Observations & analysis


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The chilled water te perature aintained at supply end is CH$ with return frovarious A'3*s at 66 7 6&H$! The share of ain A$ plant to overall electricityconsu ption is about 4


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4! First floor A'3 & 6< &!D 64 :!< :!<

Total 6&; D& 8;

e) #nergy $aving potential in c%ille water C%' (') pumps

The chilled water package syste consists of three units out of which onlyone unit of &;8 TR operates continuously throughout! 'owever, the au iliarye uip ents like chilled water pu ps operate D in nos! Rated capacity of eachpu p is about 66: J1hr! Fro actual power easure ents, head

easure ent and pu p curve the chilled water flow is very near to ratedcapacity! The delta T across the chiller is D to D!& H$ (with outlet as C andreturn as 6&H$)! Bith this data about &6; J1hr chilled water flow is sufficientto eet1generate &;8 TR refrigeration load!

'owever, the actual distribution syste and no! of A'3*s installed around thebuilding floors ay re uire slightly additional chilled water flow rates!

The building is presently operating three nos! chilled water pu ps in parallelto a co on header and supplying $h! B! to the &;8 TR package unit!

Following encon potential exists in Ch. W. pumping system;

i! Operate only two $h! B! pu ps when one &;8 TRpackage unit is operating! #econd pu p should be switched O? onlywhen second chiller is started! Operating centrifugal pu ps in paralleldoes not necessarily add up the rated flows of each pu p! The thirdpu p erely increases flow by 6; 7 &;5, however, at the sa e ti econsu ing full rated power! #aving potential is about 6:!< kwh for onepu p switched off for 6& hours in a day e uivalent to R'. "ak#' +.a. !

ii! Also, the second chiller unit is not on full load! Thus, thechilled water circulation pu p can be installed with a variable speeddrive (/F.) to regulate $h! B! flow through the syste ( aintaining

ini u flow to evaporator)! $ost of installing a /F. " pressuretransducer ( T) switch is about Rs! & lakhs! The T will give feedbackto the third pu p to auto atically start and stop based on syste linepressure! The third pu p can also be interlocked to the operation of thesecond chiller unit!

iii! Alternatively, one single large pu p of capacity &6;J1hr can be installed for one chiller to further ini ise pu ping

power! Gsti ated power consu ed for &6; J1hr flow at DD!8 headwith a new energy efficient pu p set is &: Kw as co pared to D< kw


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being consu ed presently in two pu ps! #aving potential in installing anew single larger capacity pu p is R'. 3 "ak#' +.a. $ost of installingthe pu p is about Rs! 6 7 6!< lakhs giving a si ple payback period of 4

7 8 onths!

3.3.3.$ /ini)i'in2 Re(!i2e!a ion and Ai!6condi ionin2 Re7 i!e)en '

A significant portion of the air conditioning load is due to the heat trans ittedthrough the walls and heat stored in the walls! This results in the roo inner

wall surface being at te peratures higher than that of the hu an body! Thisresults in disco fort as the hu an body is unable to radiate heat to the wallshence heat transfer (body cooling) is possible only by convection (air

ove ent) " perspiration! $ooling of the building structure (walls " roofs)itself can lead to dra atic reduction in wall te perature!

A 0u bai based co pany, speciali@ing in innovations in refrigeration and air conditioning, has e tended this concept further and atte pted cooling theroof and the floor by burying a grid of water filled pipes (fig! D!6), under vacuu , in the roof and floor! Bater evaporates at &


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0adya radesh for ware house cooling! This can help eli inate or reduce theneed for air conditioning!

+t is possible to install a natural cooling syste consisting of a tube bundle sealedunder vaccu with a working fluid inside to dissipate solar heat gain receivedon top of building back to the at osphere and ini ise heat load!

The working fluid filled under vacuu will evaporate at a very low a bientte perature and prevent solar heat fro passing through to the building wall!The evaporated fluid will need to be condensed in a s all water bath with acooling fan and return the fluid back to the pipe! The syste has noe uip ent and oving parts apart fro a s all cooling fan! The working fluid

evaporates and rises to the top of the cooling bath and returns back bygravity! The pipe grid acts as barrier reef to the solar heat load and ini iseheat gain by the building structure! This syste can very effectively eli inateor significantly reduce energy consu ption re uire ents of air conditioningplants!

The detailed description of the syste is available in the for of a presentation!2arger picture is attached in appendi !

'owever, since the building is on lease any encon easure re uiring additions "odifications in building will need to be put up with appropriate authorities!

3.3.3.3 I)+!o4e Ai! Di' !i8 ion And Ci!c "a ion In Ai! Condi ioned Roo)'

+n so e air conditioning syste s, lower te peratures are set to distribute air over a larger area and or satisfy individual lower cooling co fort levels! Atfew places the supply air grill te perature was easured at 6


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Table

Iuilding insulation has not received uch attention in +ndia! Air%conditioned

office buildings should be provided with insulated walls (hollow bricks withinsulation, double walls with insulation filling, etc!) to reduce the heat ingress!roviding roof under%deck insulation is a co on practice!

It is reported that at the Biological Sciences Building at Indian Institute of Technology, anpur, roof and wall insulation has reduced the cooling load !y "#$. The windows to wall ratio is only %$ and dou!le glass insulated glasswindows ha&e reduced the cooling load !y another '$.

( se&en storied modern, air conditioned office !uilding in )um!ai with a!out %*,*** ft " has a heat load of + - T in summer. The window to wall ratio isa!out #*$. ( simulation re&ealed that !loc/ing -*$ of the windows with

laminated rigid insulation !oards can reduce the air conditioning load !y +#$. 0ro&iding gypsum !oard panels along the walls with a one inch air gapcan reduce the air conditioning load !y an additional 1$.

3.3.3.> A4oid #e U'e o( Ai! Coo"ed Conden'e!'

To take advantage of the wet bulb te perature, avoid the useof air%cooled condensers for large cooling loads! Air cooled condensers aybe per itted only for s all cooling loads or in conditions of e tre e scarcityof water or lack of space for cooling tower! 3se the lowest te peraturecondenser water available that the chiller can handle!


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In the same )um!ai !uilding the air conditioning systemcomprised of -2 nos. air cooled pac/age air conditioners with an a&erageC30 of ".%. eplacement of air cooled condensers !y water cooler condensers could reduce the specific energy consumption !y a!out 1*$.

Air cooled condensers, being li ited by the dry bulbte perature of air, generally result in higher refrigerant condensingte perature and pressure, co pared to water cooled condensers, leadingto higher co pression ratios and higher power consu ption (about &;5 or higher) in co pressors!

For an e isting installation like +$+$+ it is possible to i prove 1lower refrigerant condensing te perature and pressure by either replacingwith a water cooled condenser with a cooling tower or install an evaporativecooler in front of the air cooled condenser!

E4a" a ion o( coo"in2 e((ec o( e0i' in2 '-' e)

$O 9 $ooling effect in KBower input to co pr in KB


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Therefore , $O 9 air flow kg1hr (Tin 7 Tout) ;!&4>8; co pr! power

9 :,DC,46;>8; &&& kw

9 D!>:

Therefore, specific ower$onsu ption for present syste 9 &&& 1 6>6

9 6!&& kB1TR

#pecific power consu ption withGvaporative type condenser 9 ;!> kB1TR

Thus, for a 6>; TR duty, powerconsu ption in water cooled

A$ plant is 9 ;!>; kB1TR 6>; TR9 644 kB

Therefore, savings potential inevaporative cooled A$ syste /s aircooled A$ syste per e istingchiller unit 9 (&&& 7 644) kB

9 :> kB

Average running hours 9 68 hrs 1 day " D;; days a year

2ess blower " water pu p power 9 &; Kw

Total savings potential 9 (:> 7 &;) 68 D;; Q :1kwh

9 Rs! 68!< lakhs p!a!

Gven after accounting for cooling water pu ping andadditional blower fan power consu ption, this saving potential is significant!

Appro i ate cost of installing an evaporative cooler in front of one air cooled condenser would be about Rs! 6; lakhs! Appro i ate savingspotential is about R'. 1:. "ak#' giving a si ple payback period of >

onths! Iased on the success of one installation the other package unit canalso be installed with si ilar evaporative type cooler!

E4a+o!a i4e P!e6coo"e!' (o! Ai!6coo"ed Conden'e!'

The perfor ance of air%cooled condensers is li ited by thedry bulb te perature! The perfor ance of these condensers can bei proved, in dry weather conditions, by providing hu idified air near wet


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bulb te perature! This pre%cooler consists of a fill aterial with tricklingwater through which the air is drawn! .epending on the design, the fanpower ay increase or a booster fan ay be re uired to overco e theadditional resistance to air flow! The potential for energy saving in drysu er onths is about D;5 to 4;5!

3.3.3.1? Red cin2 Ven i"a ion Hea &oad

/entilation is re uired for ensuring healthy conditions to the occupantsof air conditioned roo s! 0ost designs provide ventilation of about 6< cf per

person in nons oking area! +n +ndia, the issue of +ndoor Air Muality (+AM) isusually ignored ventilation ports are generally kept closed and fresh air isusually available only through door openings!

+ndoor Air Muality is a serious issue in the developed countries and, infuture, buildings in +ndia ay also have to adhere to nor s! 'owever, withventilation, the heat load increases as the heat content of fresh air isgenerally higher in su er! Air to air heat e changers can help reduce thisheat load by pre%cooling the inco ing air with out%going e haust air!

Air%to%Air 'eat G changers for re%cooling /entilation Air!

P"a e Hea E0c#an2e!' ! These heat e changers use a series of thin Alu iniu sheets to transfer heat between two air strea s! #ufficientturbulence is created between the plates to i prove heat transfer!

3.3.3.11 / " i – e)+e!a !e coo"in2 '-' e) i # ac a" "oca"i'ed +oin o( 'e ai! di' !i8 ion '-' e) !

At +$+$+, enith house the fresh air ducts are located behind various A'3*s!#tale air is designed to be e hausted through door openings! +t is possible to


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i prove the ventilation syste and instil freshness in the air conditionedfloors by installing s all air conditioned supply grills directly in front of sittingpersonnel! This will reduce the actual a ount of air%conditioned air to besupplied throughout the floor! oint wise supply on top of cubicles will givelocalised air%conditioned supply and co fort to the personnel! Ielow picturegives an actual installation in a 0u bai office! Although, it will be difficult toreplace e isting ceiling grills and ducting syste s this localised air distributionsyste can be incorporated in new building designs!


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3.9 I"" )ina ion &oad

The total illu ination load in the building is around >< Kw e uivalentto 85 of total consu ption! A lu survey was undertaken at different locationsin the building! Total connected lighting load is 6:; KB! The operating staff has already targeted lighting consu ption by alternate switching O?1OFF of one FT2 in a fitting of two FT2*s! Also, in service corridors alternate fitting arekept SO?*!

The lu levels observed at various locations are ade uate for

operational purpose and no further i prove ents are reco ended!

3. Pe!'ona" Co)+ e!'

The other a or electricity consu ing appliances at +$+$+ arepersonal co puter ter inals and au iliaries like printers, etc! +t has beenobserved that during non%occupancy, the onitors have ongoing screensaver progra e running! This not only consu es onitor power but also$ 3 power! Although, few of the onitors are of the lower energy consu ing

odel types, the sa e should be progra ed to go to sleep ode in theshortest acceptable ti e li it!


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Also, after logging off and during weekly off*s the ter inals are leftrunning (in sleep ode) thus adding to the dead load of cooling the building!+t is reco ended to advise all operating stations to switch off their $*swhenever they have logged off and no progra e testing is under process!Ter inals with long hours of co putation work should be tagged as don notdisturb so as to avoid being switched off by service staff!

.uring survey, conducted after working hours, on an average 6; 7 66$*s were found operating in sleep ode in each @one in each floor! The

point that any of the $*s were also switched off i plies that the energyconservation potential can be achieved!

3.: %a e! U'e


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chiller package and generating hot water fro waste heat recovery! The hotwater can then be separately distributed to all the use points! A s allcirculation pu p (6 kw) will be re uired for aintaining flow through the heat%e changer! Alternatively, a ther o siphon natural water circulation systecan also be designed since the water de and is not very high!

#aving potential is about R'. 1 "ak# +.a. with cost of heat e changer at Rs!&!; lakhs giving a si ple payback period of & years!

Appendi 7 gives the sche atic diagra of an air conditioning plant wasteheat recovery potential for hot water generation!


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3.= C#eck"i'

:! oor suction conditions for fans can lead to significantly reduced air flow!>! Fouling of heat e changers ay be due to carry over of lubricating oil into

heat e changers or scaling of heat transfer surfaces due to poor water treat ent or other product related fouling! The precise cause will have tobe identified by further study!

C! The $O ay also drop due drop in efficiency of the co pressor! The

drop ay be in volu etric efficiency or ther odyna ic efficiency of theco pressor! This re uires additional infor ation on actual positivedisplace ent in the co pressor and theoretical calculations using 0ollier charts! /olu etric efficiency ay drop due to wear " tear of pistons "cylinders linings or alfunctioning of suction " discharge valves! Thether odyna ic efficiency ay drop due to poor co pressor cooling,especially intercoolers in ulti%stage achines!


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For /apour Absorption 0achines

6! $o pare the $O with that e pected for si ilar end%use te peratures!&! 2ower generator te peratures indicate operation at reduced capacity!D! +n the case of absorption achines, the $O will generally be close to

e pected valves! 'owever, the ability of the achine to deliver ratedcapacity will be co pro ised if there are any syste deficiencies! Reducedcapacity ay lead to increase in nu ber of operating achines and alsowasted au iliary energy consu ption in pu ps, cooling towers, etc!

4! +nade uate cooling in cooling towers leads to reduced capacity of absorptionchilling packages!

C#eck"i'


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• rovide +nsulation on #un%Facing Roofs and Balls• rovide Gvaporative Roof $ooling• Iuilding #tructure $ooling• 3se .oors, Air $urtains, /$ #trip $urtains• 3se 'igh #peed .oors for $old #torage

U'in2


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• 0aintain co pressor seals to avoid refrigerant leaks!

P )+'


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• 3se two%speed or variable speed drives for cooling tower fan control if the fansare few! #tage the cooling tower fans with on%off control if there are any!

• Turn off unnecessary cooling tower fans when loads are reduced!• $over hot water basins (to ini ise algae growth that contributes to fouling)• Ialance flow to cooling tower hot water basins• eriodically clean plugged cooling tower distribution no@@les• +nstall new no@@les to obtain a ore unifor water pattern• Replace splash bars with self%e tinguishing /$ cellular fil fill!• On old counter%flow cooling towers, replace old spray type no@@les with new

s uare spray AI# practically non%clogging no@@les• Replace slat type drift eli inators with low pressure drop, self e tinguishing, /$

cellular units! Follow anufacturer*s reco ended clearances around coolingtowers and relocate or odify structures that interfere with the air intake or e haust!

• Opti ise cooling tower fan blade angle on a seasonal and 1 or load basis!• $orrect e cessive and 1 or uneven fan blade tip clearance and poor fan balance• 3se a velocity pressure recovery fan ring• $onsider on%line water treat ent• Restrict flows through large loads to design values• #hut off loads that are not in service• Take blow down water fro return water header • Opti ise blowdown flow rate• #end blowdown water to other uses or to the cheapest sewer to reduce effluent

treat ent load• +nstall interlocks to prevent fan operation when there is no water flow!

T#e!)a" S o!a2e• $onsider Ther al #torage (eg! ice banks) for energy cost saving, where electric

supply utilities are having Time of 4se tariff with high peak ti e rates and low off peak rates


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3.> %ATER

3.>.1 Po en ia" (o! %a e! @ Ene!2- Con' )+ ion

1. Ene!2- E((icienc- /ea' !e'

• The paragraphs below highlight the various energy efficiency easuresthat the engineering staff can undertake in their day to day operating practise!

Although, at ti es all these easures ay not be i ple entable at the guestfacilities, but surely, they can be i ple ented at the co on service facilitieslike restaurant, wash roo s, service canteen, gardens, etc!

$. In #e Ba #!oo)

a. S#o e!'

• Gnergy%efficient shower heads conserve energy without changing water pressure! 2ow%flow shower heads use up to 8; percent less water thanstandard fi tures! Flow restrictors, on the other hand, reduce water use fro6C to 66 litres per inute and can save up to 6< percent on hot water bill!

• $onsider a low%flow shower head with a shut%off button! The advantage of the shut%off button is that it allows you to be very water efficient 7 you caninterrupt the flow while you lather up or sha poo and then resu e at thesa e flow rate and te perature!

• +n the bathroo , a flow rate of two litres per inute should significantlyreduce water consu ption but also let you en oy your shower!

8. Toi"e '

• +nstalling a water%saver flush kit in the toilets will save water! One can alsoreplace large%volu e toilets with units that use only si litres per flush 7 you llreduce water usage by :; percent or ore!

• For the e isting toilets, install a water%saving device inside the tank at theback of the toilet! The ost co on water retention device available is thetoilet da ! Bhen installed properly, it will save about five litres per flush!

• A plastic bag or bottle filled with water and suspended inside the toilettank is an e cellent water displace ent device that s easy to find and install!

• 0onitor the perfor ance of the devices periodically! +f you discover that itbeco es necessary to double flush the toilet, so ething needs to bead usted or replaced! Re e ber- double flushing defeats the purpose of water conservation efforts and is costing oney!


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• Replacing an 6>%litre%per%flush toilet with an ultra%low%volu e (32/) si %litre flush odel represents a 88 percent savings in water flushed and will cutindoor water use by about D; percent! The 32/ toilet not only uses lesswater, it produces less wastewater and reduces load n the sewage treat entplant!

3. In #e i c#en

• Rinsing dishes under the tap also wastes a lot of water! Rinse the dishesin a large bowl of water, or partially fill one side of a double sink! 'ere sanother approach- slowly pour a bowl of water over dishes after putting the

in the drainer!

• +f you wash your dishes by hand, you use ore water and energy than if you use an auto atic dishwasher!

• Fi leaking faucets as soon as possible! A hot water faucet that leaks onedrip per second will waste C;;; litres per year! That s enough water for 68;full cycles on an auto atic dishwasher!

9. O doo! %a e! Con' )+ ion

• 0ore than


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• ulching to reduce evaporative losses around shrubs and trees• a proper irrigation syste with planned aintenance

. %a e! Hea e!'

G a ine all the water heaters at the various guest roo s and residentialfacilities 7 if its surface is hot or even war , so e of the energy used to heatthe water is being wasted!

#hopping for a new water heaterU 2ook for a high%efficiency unit! #o e newodels heat water only when you need it rather than storing hot water in a

tank!

Bhen the anage ent is planning to buy a new water heater for the guestroo s, here s a tip that could save the up to Rs!


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6! Bater the lawn only when it needs it! #tep on the grass! +f it springs back,when you lift your foot, it doesn t need water! #o set your sprinklers for oredays in between watering! #aves D;;; % :! 3se a broo instead of a hose to clean driveways and sidewalks! #aves


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• Keeping the above in view, it is i perative that the Gngineering.epart ent operates these e uip ents at peak efficiency! Gngineering.epart ent can help conserve energy in the following ways-

6! Iy acting as an advisor to various depart ents to help the achieve their respective Gnergy 0anage ent goals!

&! Iy ensuring efficient and econo ic operation of all e uip ents!D! They ust aintain history card of each achine so that in%efficient and

unecono ical achines can be identified and eli inated to save the wastefuluses of energy! This will also help in deciding the preventive aintenanceschedule of each achine!

; HVAC S-' e)' – P"an Roo)

6! Turn off '/A$ achinery in all unoccupied spaces!&! Gli inate or reduce duct air leakage!D! Bhile operating chillers ensure following -%

% As far as possible keep leaving chilled water te perature on the higher side!% Reduce entering condenser water te perature% 0aintain proper refrigerant charge!% Gli inate refrigerant and charge!% 0aintain proper flow rate of condenser water % Operate chillers in proper se uence!

% Operate condenser and cooler pu ps in proper se uence!

4! 2ower hot water te perature for heating when outside te perature rises!

pu ps are shut down!8! 3se proper water treat ent to prevent fouling or sealing of condensers,

cooling towers and piping!:! Repair all hot, chilled and condenser water lines, valves and pu ps! A

considerable uantity of water is lost through leaky pu p glands which canbe saved easily!

>! Repair or replace da aged hot or chilled water line insulation!C! $heck cooling water tower bleed off periodically!

6;! $heck efficiency of chiller against anufacturer*s specifications by checkingwater te perature and pressure drop in and out of chillers and condensersand otor a perage on co pressor!

66! $ondenser tubes should be kept clean!6&! #top all refrigerant leaks!6D! $heck daily purge operation on chiller for signs of air leaks64! Re ove algae growth fro cooling towers!6! $heck all ther ostat for correct functioning!


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= Hea in2

6! $heck and back wash water filtration plant for higher efficiency and reductionin water syste scaling!

&! $heck water analysis periodically!D! Repair at once all leaks, dripping faucets and shower heads!4! $heck toiler flush valves for any water leaks!

8! $heck and ad ust swi ing pool ake up water (not to e ceed 6;5)!:! #hut down pool filtration plant when pool is not in use!>! Reduce lawn and shrubbery watering to absolute ini u !

C! $heck water regulating valves on water coolers, refrigerant units and iceachines!

> B i"din2 and G!o nd'

6! #eal all e terior windows, doors cracks and openings to reduce outdoor airleaks!

&! Reduce gap under the doors of air conditioned spaces to ini u !D! $heck grounds for leaking pipes underground!

4! $heck and repair all door closers!

8! Keep all Scontacts* clean!:! $heck 2ighting levels in all Gngineering spaces to see if they can be reduced!>! Replace all incandescent fi tures with fluorescent and energy efficient la ps

like 2%C or #2%&< etc!

C! Keep all light shades clean! 3se shades that allow ore light to pass or reflect!

6;! .o not switch on lights unless necessary!66! Arrange schedules for turning or reducing lights in guest corridors, lobby

area, function spaces, restaurants, bars, shops, kitchens etc!6&! 0ake a house inspection of all depart ents to see that energy conservation

is being observed!

Documents

EAS Report ICICI Videocon Towers Delhi