8/3/2019 Air Conditioning System Brochure

1/2

Formore informationon the recommended use of pumps inmodern

air-conditioning systems,please consult the Grundfos CBS System

Guide.This also provides recommendations forthe optimumdesign

of heating,pressure boosting and wastewaterpumping systems.

All Grundfos product documentationand selectiontools, including

WinCAPS and WebCAPS are freelyavailable.WinCAPS includes details

of the viscosityand densityof virtuallyevery anti-freeze mediumused forcirculationsystems.

Forfurther informationabout Grundfos pumps forair-conditioning

systems,please consult www.grundfos.com/cbs.

Electronicspeedcontrol

Grundfospumps withelectronic speedcontrolmeanthat

pumpoperationsalwaysmatchsystemloads.This ensures

maximumefficiencyand aminimumof energyconsumption.

Operatingprofilescan beadjusted tomeetboth seasonaland

climaticchanges,aswellasbeingabletocopewithanyfuture

changesin needs.Speed-controlledpumpscanbe controlled

byvariationsin pressure,temperature,flow, differentialpres-

sureorany otherspecificmeasurableparameter.This provides

tremendousopportunitiesfor usingthese pumpsto optimise

thewaythat othercomponentsin theair-conditioningsystem

work.Grundfos pumpsthusnot onlyimprove overalleffi-

ciency,but alsoprovideenergy savingsofas muchas2050%.

If solutions withmore thanone pump are required,this is

provided by external Grundfos control panels.

Know-howaddsup

Fullaccess toGrundfostec hnicaldata,know-how andexperi-enceprovidescomprehensivesupportrightfromthe initial

p l an n in g s t a g e. T h is i s t h ew a y t o g et t h ev er y b es t a i r -

conditioning results, which meet and exceed customer

requirementsand expectations.

It paysto installGrundfos

ItpaystoinstallGrundfospumpsandcontrolsystemsinair-

conditioningsystemsofeverykind.Grundfospumpsfeature

thequality,performanceand reliabilitythatare essential

ifair-conditioningsystems areto liveup tospecifications.Grundfospumpscover thecomplete rangeofcapacities, from

1m 3/ h u p t o 4 0 0 0 m3/hor more,and withbothin-lineand

end-suctiondesigns.

Complete range

There are Grundfos pumps tomeetevery need:

in-line and end-suctiondesigns

dry-runneror wet-runner(rotor canned)

from 1m3/hup to4000m3/h(ormore)

special shaftseals foruse inlowtemperatures

Speed-controlled solutions forvirtually any system

specially coated pump houses.

Total control

Grundfos electronicspeed control and othercon-

trol systems meanthat pumps forair-conditioning

systems provide complete control,onthe basis of:

constantcurve

constantdifferential pressure

proportional differential pressure (calculated)

proportional differential pressure (measured)

temperature control.

www.grundfos.com 965352751205

Beingresponsible is ourfoundationThinkingahead makes itpossible

Innovationis the essence

8/3/2019 Air Conditioning System Brochure

2/2

magnaaliquamerat volutpat

Ut wisi enimad minimveniam,quis n ostrud exerci tationullamcor-

persuscipit lobortis nisl ut aliquip exeacommodo consequat.Duis autemvel eumiriure dolorin hendrerit invulputate velit esse

molestie

consequat,vel illumdolore

eufeugiat nullafacilisis at vero eros et accumsanet iusto odio dig-

nissimqui blandit praesent luptatumzzril delenit augue duis dolorete feugait nullafacilisi.Loremipsumdolorsit amet

consectetueradipiscing elit,sed

diamnonummy nibh euismod tincidunt ut laoreet dolore magna

aliquamerat volutpat.

Cooling tower Heat recovery Fan c

Chiller Primarypump

Primarypumps

Secondarypumps

Coolingtower

Coolingsurfaces

Coolingceilings

Fancoils

Heatrecovery

Pressureholding

UPSUPSD

TPE/TPEDSeries 2000

TPE/TPEDSeries 1000

TPTPD

NBNK

NBENKE

HS

Grundfos pumps ensure full control

CR

Primary pumps

Toensure the mostenergy-efficientoperation of the chiller,th ere is

a need fora constantflowthroughthe evaporator.Usinga speed-

controlled pump forthis purpose,in stead of a fixed-speed pump with

a throttle valve,is one way of keeping the Life Cycle Cost(LCC) of an

air-conditioningsystem toa minimum.The speed-controlled pump is

setata constantspeed,atthe correctduty point.

If several chillers are operatingin parallel,the use of speed-controlled

pumps canalso ensure constantflowatall times.

Secondary pumps

The mainpumps supply chilled water,the need forwhich varies round

the clock and throughoutthe year.Toensure low LCC,it is essential

that these pumps adjust themselves to match these fluctuations,

thus eliminatingday-to-day and seasonal variations.

One way of doingthis is to use two-way valves instead of three-way

units and to install speed-controlled pumps. The differentneeds

associated witheach particularsystem define the optimum number

of pumps thatcanbe operated inparallel as mainpumps.

Cooling tower

Whenthe heatproduced in the condenserexceeds whatis needed to

preheatthe hotwaterin the heatrecovery process,this excess energy

is pumped tothe coolingtower. The aim is tokeep the waterfed to

the condenserat a constanttemperature of 27C.

The performance of the coolingtower varies according to outside

conditions sopumping requirements vary accordingly.The most

energy-efficientpump fora cooling toweris therefore a speed-

controlled unitcontrolled by temperature.

Buffertank

One of the challenges of designingmodern air-conditioningsystems

is tocombine the constantflow onthe primary side withthe need for

variability onthe secondary side.This challenge can be overcome

witha built-in buffertank betweenthe primary and secondary sides,

makingit possible tohave a constantflowon the primary side along

witha variable flowon the secondary side.This buffertank also

controls whenthe chiller starts and stops, and the size of the tank

determines the intervals betweenstartingand stopping.