bread and butter english

7/27/2019 Bread and Butter English

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If refrigeration is your bread and butter

Adva nced hea t trans fer technolog y for co mmercia l refrige ra tion


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Advanced components

The world leader in heat exchangetechnology, Alfa Laval offers the widest

range of air and liquid heat exchangers

on the market today. O ur advanced unit

coolers, liquid coolers, condensers and

evaporators are specifically designed to

ensure peak C .O .P. for your refrigera-

tion system.

Air heat exchangers, plate heat ex-

changers, shell & tube heat exchangers,

whatever your refrigeration needs,

Alfa Lavals wide range of componentsensures that your systems provide safe,

efficient operation, day-after-day, year-

in, year-out.

Get peak performance

Designing or building a system? Let

Alfa Laval supply the heat exchangers.

While all our products provide optimum

performance, the interplay between

them can also be optimized, ensuring

they work in harmony with each other.

This not only offers considerable

technical advantages, it also means

lower investment and operating costs.

O ur equipment has been developed to

handle most primary and secondaryrefrigerants, with sharp focus on the

new and natural refrigerants. Due to

increasingly stringent environmental

legislation in certain countries, these

are becoming compulsory in super-

market chains in many parts of the

world.

Which primary and secondary refrig-

erants should you choose for your

system? Is the cooling media corro-

sive? Is it liable to cause fouling? Noproblem. O ur know-how will help you

design a system that provides optimum

performance and lowest operating

costs, with minimum service

requirements.

One supplier

means peace of mind

C all on just one supplier to help you

reconfigure or expand your refrigeration

system and improve the efficiency

even further. O ne supplier means less

administration and fewer man-hours.

Take advantage of our extensive

knowledge bank. It is continuously

updated with the latest developments

in the various food refrigerationapplications.

Quality first

Alfa Laval Plate Heat Exchangers are

performance tested in local refrigerant

laboratories and at external institutes.

O ur Air H eat Exchangers are tested

according to Eurovent.

P late heat exchanger designs comply

with local and global refrigeration

standards and pressure vesseldirectives.

M anufacturing is certified according

to national and international quality

systems, such as ISO 9001, A SM E,

SQ L, UD T and others.

Wherever you are, were there

Alfa Laval is represented in 130

countries and our products in

many more. O ur advanced refrigera-

tion equipment is backed up by

flexible production and an efficient

global service and spare parts

organization.

P H O T O : H K A N B E N G T S S O N


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Its 9:30 on a sunny O ctober morning

in Helsinki and the new store already

has quite a few customers. O wners offood retail outlets and restaurants push

large shopping carts between rows of

well-packed shelves and chilled and

frozen food cases.

Converted printing works

The sign over the entrance says

K espro, the trading name for Keskos

cash-and-carry stores. O ccupying a

building that was previously a large

printing works, the store has a total

floor space of 9,900 m2.

The refrigeration system, installed

by Suomen K ylmtekniikka (Finnish

Refrigeration Technics), is a direct

expansion system with four parallel

compressor power packs. The

refrigerant used is R404a and the

system has a charge of 1,480 kg.

Roof-mounted condensers

M ounted on the roof of the store (see

photo above) are four Alfa Laval Air

C ooled Condensers, two 288 kW andtwo 200 kW units. The low temper-

ature side of the system provides

freezing down to 19C for a 548 m2

cold storage room, with a ceiling height

of 4.5 m. This is achieved with four

Alfa Laval 18 kW Industrial AirM ax

Evaporators with electric defrost in the

coil and drip tray, plus fan ring heaters.

The low temperature circuit also serves

45 m of frozen food cases in the

main store.

Cubic Unit Coolers

The high temperature side provides a

temperature of +6C for various chilled

rooms, with a total floor space of

approximately 1,100 m2 and a ceiling

height of 4.5 m.

This circuit also chills an incoming

goods terminal with a floor space of

about 1,000 m2 and a ceiling height of

3.5 m. Twenty-two 12 kW Alfa Laval

C ubic Unit Coolers are installed in

various locations (see lower photo, left).

The high temperature side also serves

27 m of chilled food cases in the store.

Waste heat generated by the system is

recovered via four Alfa Laval Brazed

Heat Exchangers, BHEs, connected to

the compressor packages and recy-

cled to heat incoming air to the store.

Energy efficient system

How energy efficient is

the system? Ilkka Viita is

M arketing M anager of

Finnish R efrigeration

Technics, the company

that designed and installed the system.

T he Kespro plant has an Adap-Kool

electronic management and monitoring

system. Intelligent controllers contin-

uously adapt the refrigeration system to

actual operating conditions, reducing

energy consumption to a minimum.

Adap-K ool also allows remote

monitoring and control by our refrigera-

tion technicians.

Correct power levels

Ilkka Viita mentions other energy saving

features. We designed the systemwith parallel compressor packages.

These ensure correct power levels at

all times and avoid energy wastage.

Alfa Lava l he at exc ha ng ers

fo r Kespro , He ls ink i

Earlier this year Finlands largest supermarket chain,K esko, opened a new K espro cash-and-carry store on

the northern edge of Helsinki. K ey components of the

refrigeration system, Alfa Laval heat exchangers were

chosen for their reliability and for the added value

provided by Alfa Laval.

P H O T O S : C A T H A R I N A B I E S R T


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T he roof-mounted Alfa Laval Conden-

sers have stepless control of the fan

speeds. This means constant conden-

sing pressure, lower fan noise levels

when full pressure is not required, and

considerable energy savings. Since the

units are fitted with inverters, all cables

and switches must comply with EM C

norms.

Why Alfa Laval?

Although Alfa Laval is a major supplier

of plate heat exchangers and unit

coolers on the industrial refrigeration

side, the company is not equally

well-known in the field of commercial

refrigeration. So why did Finnish

Refrigeration Technics choose

Alfa Laval to supply heat exchangers

for the K espro project?

K esko is our biggest customer, says

Ilkka Viita. In an important project like

this we must have reliable components

and a supplier that we can trust. O ur

reputation is at stake. Alfa Laval is an

international company with a reputation

for quality. Their heat exchangers live

up to the promises made in the sales

literature in terms of capacity and

performance.

Local presence

Ilkka Viita admits that, although priceis important in a fiercely competitive

market, added value is also a

significant factor. With Alfa Laval we

get the technical support we need.

This is the first large-scale project we

have undertaken using their products

and we soon realized the value of their

local presence in Finland. We get

assistance fast and we get it in our

own language.

Part of the Lombardini retail group, Gross Market operates

a chain of large cash-and-carry stores located throughout

Italy. Each store is equipped with refrigeration plant from

Arneg and incorporates heat exchangers from Alfa Laval.

Anselmo A nselmi, M anager of the new Gross

M arket store in P iacenza, explains that the first

outlet in the chain opened in 1964 in Dalmine,

near M ilan. Today Gross M arket has 19 stores

with a total sales area of 100,000 m 2 and more

than 1,000 employees. At our Piacenza site we have about 50

employees and a floor area of 6,000 m2.

Lik e the other 18 Gross M arket retail sites, the refrigeration plant at

the Piacenza store was installed by Arneg SpA, a large Italianrefrigeration group with subsidiaries worldwide. Arneg is a key

customer for Alfa Laval Italy, purchasing large volumes of heat

exchangers annually.

Nine Alfa Laval heat exchangers

G ross M arket at P iacenza is equipped with a direct expansion

refrigeration system using R 404a as the primary refrigerant and

incorporating nine Alfa Laval heat exchangers as evaporators and

condensers.

Three Alfa Laval AC C S A xial Condensers, with a total output of

730 kW, are installed in a corner of the truck parking area outside

the store.

Four Alfa Laval C ubic and Top U nit C oolers are installed for various

duties in the high temperature circuit. These include 50 m3 of

storage for cheese at +4C , 45 m3 for meat at 0C , 50 m3 for fruit

and vegetables at +4C , and 45 m3 for fish at +1C . O n the low

temperature side, two Alfa Laval C ubic Unit C oolers, provide

freezing down to 25C in a 200 m3 cold storage room.

Proven reliability

O ur Alfa Laval heat exchangers are

performing well here in P iacenza, says

G ross M arket M anager, AnselmoAnselmi. The fact that Arneg chose

these units for all our G ross M arket

stores shows that they are efficient and

reliable.

Arneg chooses Alfa Laval

for 19 G ross M arket stores

Kesko

Kesko conducts retailing activities in

close chain co-operation with the

K-retailers throughout Finland. Energy

savings, waste management and other

environmental aspects are particularly

important when upgrading existing

stores or building new o nes.

Finnish Refrigeration Technics

Finnish Refrigeration Technics is part

of the Huurre Group, one of the most

forward-looking names in the field of

refrigeration in Europe, with offices

throughout Finland and in Sweden.

Left: A Cubic Unit Cooler installed in the high

temperature circuit at Gross Market, Piacenza.

Below: Three ACCS Axial Condensers are located

in the truck parking area.

P H O T O S : F O T O Y A N O


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Lets meet the challenge

togetherC hanging to environmentally friendly refrigerantsis a challenge we must meet for the planet, andto stay ahead in a fiercely competitive market. An

experienced refrigeration partner, Alfa Laval helpsyou build systems with minimum TEWI and low

total energy consumption systems that provide

peak C .O .P. with lowest possible life-cycle costs.


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A well-known supplier of heat transfer

solutions for industrial refrigeration,

Alfa Lavals well-proven technologyand know-how is solving problems

daily for builders of supermarket

refrigeration systems and their

customers.

O nce the systems are installed,

Alfa Laval has the global service and

spares network to help keep them up

and running.

New refrigerants,

higher energy efficiency

EU regulations stipulate that HC FCs

must be completely phased out in the

coming years. Similar regulations,

sometimes even more stringent, are

being adopted in many other coun-

tries. T herefore the selection of refriger-ant and the volume needed for your

system are crucial factors that will

directly influence total C O 2 emissions.

Some years ago, the concept TEWI,

Total Equivalent Warming Impact, was

introduced for refrigeration and similar

systems as a method of comparing

environmental impact. TEWI compares

the amount of CO 2 and C O 2 equi-

valents generated by chillers, heat

pumps and other equipment.

In addition to the selection of refrig-

erant and, hence, the environmental

impact, increasing demands are being

placed on energy management. Its up

to you as the owner/user of the retailrefrigeration system to do everything

possible to minimize total energy

consumption.

A combination of factors

Selecting efficient heat transfer

components means less refrigerant

charge. The selection of a good

refrigerant means less environmental

impact and higher efficiency, i.e. the

selected refrigerant has low G DP

value and favourable heat transfer

properties. T he designed system will

provide optimum utilization of available

energy sources.

O T O : C A T H A R I N A B I E S R T


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Alfa Laval has the solutions

Alfa Lavals broad range of air and

liquid heat exchangers has been

developed and tested to cope with

natural refrigerants such as ammonia,

C O 2, propane and other hydrocarbons.

Whether they are installed as evap-

orators, condensers, subcoolers,

desuperheaters or for other duties,Alfa Laval heat exchangers offer you

the highest levels of reliability, safety,

energy efficiency and performance.

O ur high quality components enable

you to design and build a compact

refrigeration system with a low charge

volume and minimum environmental

impact.

We also have the know-how

O ur components are backed up by

Alfa Lavals advanced heat exchange

technology and an extensive knowl-

edge bank relating to refrigeration

applications, acquired during the

past 15 years.

Reduction of

life-cycle costs

O ur aim is to help you achieve lowest

life-cycle costs. O ur compact, efficient

heat exchanger solutions ensure that

the investments you make to achieve

a truly energy efficient solution will berecovered in a relatively short period.

Alfa Laval heat exchangers offer pro-

longed service life. Your maintenance

costs and energy consumption will

decrease noticeably during their

calculated life-time.

The compact designs of Alfa Laval

heat exchangers mean less refrigerant.

This, in turn, means lower costs for

appropriate safety measures. It also

reduces the risk of environmental

impact that could place extra financial

burdens on your operation.

Indirect systems

with low life-cycle costs

Indirect systems have now proved

their worth in retail applications.

Demand is steadily increasing for

indirect systems in the form of factory

tested refrigeration modules, offering

fast, simple installation and regulation.

The core of the indirect system is anevaporator with a refrigerant cooling a

secondary coolant. This allows the total

area of the evaporator to be utilized for

keeping a constant brine temperature

close to the product temperature.

Easy, constant regulation of the evap-

oration temperature contributes to less

frequent, easy defrosting and a stable

climate. This reduces both energy and

service costs.

The bottom line is lower life-cycle costs

and better long-term economy for your

entire installation.

P H O T O S : C A T H A R I N A B I E S R T


9/16

High heat recovery potential

An interesting argument for indirect

systems is their energy/heat recovery

potential. It is possible to recover

nearly all the heat removed by a re-

frigeration system. This potential is

exploited regularly in countries with

cold climates.

The excess heat can be used to heata water circuit, or the water circulating

to the air heat exchanger can pass

another desuperheater before the

condenser. The recovered heat can

be used for floor heating and space

heating in the supermarket.

Alfa Laval can advise on the dimen-

sioning of the system and supply

advanced heat exchangers to ensure

its reliability and efficiency.

Air-cooled

condenser with

a desuperheaterfor heat recovery.

Indirect chilling

by flooded

evaporation.

Floating conden-

sation with free

cooling as an

option.

Indirect system with heat

recovery from a combined

desuperheater and condenser.

9


10/16

ASDAs new chilled distribution centrenear Bedford includes a cold store and

three chill stores. The 25C cold store

is served by three low pressure receiver

packages (LPR ), utilizing direct environ-

mentally friendly ammonia as the refrig-

erant. Each package comprises two

coolers, one compressor and one

evaporative condenser.

The three chill stores (0C, +2C, +12C ),

with a total floor area of 22,000 m2, are

served by a secondary glycol system.

The chilled glycol is supplied from three

systems with a total capacity of 2,793

kW. Alfa Laval M 20 semi-welded plate

heat exchangers (P HEs) are installed as

ammonia-to-glycol evaporators. The

entire system is designed for optimum

energy efficiency and recovered heat is

used for space heating and defrosting

the coolers.

Lower refrigerant charge

Dermot Cotter, is Design M anager,

South, for Star Refrigeration, thecompany which designed and installed

the system: Each chiller packageutilizes a low pressure receiver and

plate heat exchanger. The LP R concept

reduces the charge by as much as

50% compared to a conventional

flooded system. Although each chiller

has a capacity of 931 kW, the total

ammonia charge for the three units is

only 780 kg.

A clear competitive advantage for Star

is TELSTA R , S tars own control system

which controls all functions of the

Bedford refrigeration plant.

T ELS TAR allows plant operators to

replay key events in the plant opera-

tion, says Dermot C otter. T he system

is a valuable fault-finding tool.

PHEs more efficient

Dermot C otter emphasizes the benefits

of plate heat exchangers compared with

shell & tube technology. P HEs offer

narrower temperature differences across

the heat transfer surfaces. T hereforethey are more efficient and smaller

compressors using less energy can beused. PHEs also take up far less space.

Why did Star choose Alfa Laval to

supply the heat exchangers?

Alfa Laval helped Star develop the

concept of combining plate heat

exchangers with low pressure receiv-

ers, says Dermot C otter. M ost

important of all, we need reliable

products delivered on time, that will

perform according to the manufact-

urers design criteria and we know

we can rely on Alfa Laval.

Future-proof

ASDA comments: The refrigeration

system at Bedford fulfils ASDAs

requirements for a plant which is not

only safe and efficient in operation, but

also future-proof for the long term well-

being of our distribution network.

PH Es fo r fu tu re - p ro o f

refr igerat ion system

UK -based ASDA recently opened a new chilled

distribution centre at Bedford. Designed and

installed by Star R efrigeration Ltd., the facilitys

refrigeration system utilizes ammonia as the

primary refrigerant. The charge is kept to a mini-

mum by low pressure receivers in combination

with Alfa Laval plate heat exchangers.Dermot Cotter, Design Manager, South,

Star Refrigeration

The Star Refrigera-

tion low pressure

receiver package

incorporates

Alfa Laval M20

semi-welded

plate heat

exchangers, and

utilizes ammonia

as the refrigerant.

ASDA superstores

ASDA, Britain s largest chain of foo d

and clothing superstores, was formed

in 1965. Today the company has 245

stores and 19 depots across the UK.

With a w orkforce of 109,000, ASDA

works wit h more than 2,800 suppliers.

To date, Alfa Laval has supplied unit

coolers for six ASDA supermarkets in

various parts of the UK.

Star Refrigeration

Headquartered in Glasgow, Star

Refrigeration Ltd . is a leader in the UK

industrial refrigeration market with 250

employees in 12 locations. Star builds

packaged chillers using either ammo-

nia or HFCs and supplies completesystems to cold stores, food factories

and a wide variety of process cooling

applications.

PHOTOS:

CARIN

SIM

ON

PHOTO:

CARIN

SIM

ON


11/16

11

Located in a central position in the hist-

oric town of Lund, IC A Focus has a

total floor area of 2,400 m2 with a sales

area of 1,600 m2.

New indirect system installed

The stores original direct expansion

refrigeration system required a charge

of 524 kg of R12 and R502 type

refrigerants. Six years ago, subsidized

by a grant from the Swedish NationalEnvironment Protection Board, the

system was converted to a two-stage

indirect refrigeration system using

ammonia and CO 2.

Fredrik Larsson,

Assistant Store

M anager at IC A

Focus, says the

system performs well.

He remembers the

conversion period in

1995: The project

took about three

months and we were

open the whole time. The food cases

were converted one at a time, and

there were only two days when we

couldnt sell frozen food.

Ammonia means zero ODP

In the primary system, ammonia is

utilized as the refrigerant, with

polypropylene glycol as brine on the

high temperature side. The ammonia

circuit has a charge of 34 kg.

Ammonia has zero O zone Depletion

Potential (O DP ). Due to its short atmos-

pheric lifetime (714 days), it does not

contribute to G lobal Warming Potential

GDP.

CO2 on low temperature side

The secondary refrigerant is CO 2,

serving the low temperature circuit.

The refrigerant charge is 130 kg. In

addition to being environmentally

friendly, C O 2 is less expensive since it

has lower temperatures, higher capa-

city, and thus requires less piping.

Located on top of the two-storey

IC A Focus building, the refrigerating

machinery room houses two York

Sabroe ammonia chillers with dual

compressors. Each chiller incorporates

an Alfa Laval NB76-FS nickel-brazed

plate heat exchanger. A third ammonia

chiller is integrated with the pump unit.

60 plants with Alfa Laval PHEs

In recent years Alfa Laval has worked

closely with system builders devel-

oping the components needed to

handle natural cooling media. Today

Alfa Laval supplies condensers,

evaporators and coolers for CO 2,

propane and ammonia. The focus is

on highest C .O .P. with lowest opera-

ting costs.

Lennart Rolfsman of York, the com-

pany which supplied the chillers for

IC A Focus, Lund, explains that his

company has installed 60 commercial

refrigeration plants of this type, and all

have Alfa Laval plate heat exchangers.

Welcome to the future

In the near future on the freezing

side there will be direct evaporation

only, with no CO 2 pumping.

This development makes a consider-

able, additional contribution to improv-

ing the economy of the system.

In 1995 a supermarket in Swedens IC A chain,

was one of the first to install an environmentally

friendly refrigeration system using natural

refrigerants. Alfa Laval supplied plate heat

exchangers for the chillers.

The n atura l p ath to fo o d re frig e ra t io n

The refrigerating machinery room houses two York Sabroe ammonia chillers

with dual compressors. Each chiller incorporates an Alfa Laval NB76-FS nickel-

brazed plate heat exchanger.

P H O T O S : H K A N B E N G T S S O N


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12

S &T

Evaporator

B HE

Evaporator

B HE

Combined

P HE

Condenser

Axial

Condenser

Liquid

Cooler

P HE

Evaporator

Liquid Cooler

Condenser

B HE

Condenser

Unit C ooler

Evaporator

Direct system freezing and chilling by

cascade arrangement.

Direct system.

H O T O S : H K A N B E N G T S S O N


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Cascade

arrangement

with CO2pumped flow,

freezing.

CO2 DX freezing, indirect chilling.

Brine Ta nkOil SeparatorRefrigerant

Separator

Receiver Compressor Pump Expansion

Va lve

Float

Va lve

Air CoilRegulator

Va lve

Refrigerant

Superheater


14/16

All you ne ed fo r o p tim um he a t trans fe r

Brazed PlateHeat Exchangers

Semi-WeldedHeat Exchangers

All WeldedHeat Exchangers Shell & Tube Condensers

Capacities: 1 500 kW Capacit ies: 35 10,500 kW Capacit ies : 175 2,700 kW Capacit ies : 8 900 kW

Shell & Tube C ondensers are avail-

able in five series covering a wide

range of applications in water-cooled

systems. First-class materials areused in a design that ensures accu-

rate refrigerant distribution. Finned

copper tubes. Available in marine

version with C u-Ni tubes and stain-

less steel condensers. C omplying

with all important world pressure

vessel codes. Desuperheater

versions are available and a specific

series for the glide refrigerant R407C .

A complete range of horizontal and

vertical liquid receivers supports the

condenser applications.

Benefits:

O ptimized heat exchange

Robust and reliable

Easy inspection and cleaning

Suitable for all HC FC/HFC s

Applications:

INDIRECT SYSTEMS

Water-glycol cooled condensers

DX evaporators, single and double

circuits

Flooded evaporators

INDIRECT AND DIRECT SYSTEMS

C ascade - evaporator/condensers

C ondensate coolersDesuperheater for heat recovery

O il coolers

Applications:

INDIRECT SYSTEMS

Water-glycol cooled condensers

Flooded evaporators

DX evaporators


Desuperheater for heat recovery

Water-cooled oil coolers

Applications:

INDIRECT SYSTEMS

Water-glycol condensers

Flooded evaporators

DX evaporators


Cascade - evaporator/condensers

Desuperheaters

Applications:

INDIRECT SYSTEMS

Water-cooled condensers

Desuperheaters

Chilling and heat pump function

C opper Brazed Plate Heat Ex-

changers (BHEs) are available in

10 models, equipped with stainless

steel plates, and copper brazed forhigh thermal efficiency and strength.

Designed for refrigeration and A C

duties in retail outlets, B HEs handle

HCFC, H FC, HC and CO 2 refriger-

ants. As dry expansion evaporators

they feature integrated flow equali-

zation for maximum cooling perfor-

mance. T hree models are equipped

with double refrigerant circuits. Four

nickel-brazed models are available

for ammonia duties up to 200 kW.

Temperature range: 100C to 200C ;

pressures in excess of 40 bar.

Benefits: Extremely compact, low weight,

easy to install

Low refrigerant charge

Even flow distribution, with

stable superheat capability

Safe oil return, even with

low loads

Safe capacity control due to

double refrigerant circuits

Floating condensation

temperature with flooded

evaporation

Can be optimized with airliquid coolers in indirect

cooling systems.

The Semi-Welded Heat Exchanger

(SWP HE) is available in six models.

The refrigerant flows in laser-welded,

sealed plate channels, and the brinein gasketed channels. The flexible

modular design enables it to cope with

fatigue stresses and ice formation. T he

SWPHE is adapted for most refriger-

ants on the welded side and is partic-

ularly suitable for ammonia duties.

Standard plate materials are stainless

steels and titanium. Temperature

range: 45C to 130C ; pressures up

to 25 bar. T hermal efficiency is high

with a free plate arrangement allowing

adaptation for most duties.

Benefits:

Low charge, low weight

Easy to modify heat transfer area

for altered capacities, refrigerants

Easy inspection and cleaning of

the liquid side

R eliable with long service life for

heavy duties

P late materials for corrosive fluids,

cooling water and brines

C ondenser/desuperheater or

condenser/oil cooler combined in

a single unit

Floating condensation with flooded

evaporation

C an be optimized with air liquid

coolers in indirect cooling systems.

AlfaRex is an all laser-welded, com-

pact plate heat exchanger adapted to

handle all refrigerants in the temper-

ature range 60C to 200C ; pres-sures up to 45 bar. Specifically

constructed, welded and tested for

fatigue with predictable life-times,

AlfaRex units are suitable for use as

CO 2/ammonia cascade coolers and

CO 2 evaporators for freezing appli-

cations. They can also be used as

heat regenerators for ammonia

condensing at 40 bar/heating water

to approx. 75C . P lates in stainless

steel, titanium and other materials

allow for the use of corrosive brines

and cooling media. Designed for

flooded flow evaporation and dry

expansion systems.

Benefits:

Low charge, low weight

Extremely small footprint

Wide operating range for most

demanding duties

High reliability, long life

14


15/16

15

Unit Coolers

Capacities: 0.5 140 kW

Air-Cooled Condensers Liquid CoolersShell & Tube Evaporators

Capacit ies : 9 820 kW Capacit ies: 15 2,500 kWCapacities: 18 1,500 kW

Designed for AC and refrigeration

duties, A ir-C ooled Condensers are

fitted with copper tubes, aluminium

fins and axial or centrifugal fans. Withcompact designs, optimized module

fans and high fan efficiency, these

condensers are suitable for common

refrigerants such as HCFC and HFC .

Design temperature from 30C to

60C . Test pressure: 30 bar. Available

in different materials as customized

products.

Benefits:

High cooling efficiency

Low refrigerant charge

Low power consumption

Low noise level

Wide range of options (cabling, fan

speed control, coil coating, etc.)

Performance certified by Eurovent

Suitable for AC and refrigeration

duties, Liquid Coolers are fitted with

copper tubes and aluminium fins.

Available in both suction and blowingversions. Compact designs, optim i-

zed module fans and high fan effici-

ency. Frames are designed for heavy

applications. Suitable for cooling of

water, water glycol mixtures and

brine. Design temperature from

30C to 80C . Available in different

materials as customized products.

Benefits:


Low noise level

Wide range of options (cabling, fan

speed control, coil coating, etc.) O ptimization with liquid cooled

PHE condensers and S& Ts

he U tube design of the Shell& Tube

vaporator prevents mechanical

ension and allows the tube bundle to

e removed for inspection and clean-ng. T he units are equipped with

pecial finned copper tubes. Dryplus-2

vaporators are available in standard

ersions to 10C and low temper-

ture versions with variable baffle posi-

ons for optimal brine flow. Stainless

teel versions available. Compliance

with all important world pressure

essel codes.

Benefits:

O ptimized heat exchange

Up to four refrigerant circuits in one

heat exchanger

Life-cycle tested

Easy inspection and cleaning

Suitable for all HC FC / HFC

refrigerants

Fully compatible with heat pump

applications

Unit Coolers are fitted with copper

tubes, aluminium fins, and centrifugal

or axial fans. Designed for cold rooms

with fresh or frozen goods with roomtemperatures from +20C to 35C.

Suitable for direct cooling with refrig-

erants such as HCFC , H FC , and

ammonia; indirect cooling with brine.

Available with single or double air flux.

Design temperature from 40C to

60C . Test pressure: 30 bar.

Benefits:

High cooling efficiency

O ptimal defrost systems


Low noise levels

Wide range of options (cabling, coil

coating, etc.)

Available in different materials as

customized products

Performance certified by Eurovent

C an be optimized with PHE and

S&T evaporators

Applications:

NDIRECT SYSTEMS

FC DX evaporators for chilling

nd freezing.

hillers and heat pumps

Applications:

INDIRECT SYSTEMS

Air cooling by brines

DIRECT SYSTEMS

Air cooling by HFC DX

Air cooling by ammonia DX

Air cooling by flooded ammonia

Applications:

DIRECT SYSTEM S

Air-cooled condensing

Applications:

INDIRECT SYSTEMS

Air-cooled water-glycol cooling


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Alfa Laval in brief

Alfa Laval is a leading global provider

of specialized products and engineering

solutions.

O ur equipment, systems and services

are dedicated to assisting customers

in optimizing the performance of theirprocesses. T ime and time again. We

help them heat, cool, separate and

transport products such as oil, water,

chemicals, beverages, foodstuff, starch

and pharmaceuticals.

O ur worldwide organization works closely

with customers in almost 100 countries

to help them stay ahead.

How to contact Alfa LavalC ontact details for all countries are

continually updated on our website.

P lease visit www.alfalaval.com to

access the information.IB

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