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LEW CS/CL 042
Инструкция по эксплуатации Страница: 11

Galletti LEW CS/CL 042 Инструкция по эксплуатации онлайн [11/56] 466139

Galletti LEW HS/HL 244 Инструкция по эксплуатации онлайн [11/56] 466618

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RG66006951‐Rev.01

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TableII–ListandgraphicalrepresentationofthelayoutofthecomponentsinfourEfficiencyPacks:

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

EfficiencyPackONE:EfficiencyPackONE:

EfficiencyPackTWO:EfficiencyPackTWO:

EfficiencyPackTHREE:EfficiencyPackTHREE:

EfficiencyPackFOUR:EfficiencyPackFOUR:EfficiencyPackFOUR:

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Solutionswithmorethanonecircuitprovidetheutmostreliabilitythankstoredundancy,whilethosewithmorethan

onecompressoronacircuitprovidepartialloadswithidealefficiency,alsothankstoincreasedheatexchangesurfaces.

1.3.1 Compressors

OnlytopinternationalbrandScrollcompressorsareusedonLEWunits.Scrollcompressors,uptoapoweroutputof182

kWfo

rsinglecircuit,arethebestsolutionintermsofreliabilityandefficiency.Theyalsoprovidethelowestamountof

sound emissions. Process optimisation, along with a carefully selected intrinsic volumetric compression ratio (RVI),

clearly improves the isentropic compression performance and reduces energy losses. The use of a scroll compressor

allows low vis

cosity oils to be used. This, in comparison to higher viscosity oils, reduces thermal resistance at the

evaporator. It also increases the evaporation temperature by more than 1.5°C (EER increases by more than 5.5%)

comparedtoothersolutions.

Compressor motors are protec

ted against overheating, overloads and high delivery gas temperatures. They are

mounted on rubberanti‐vibration mounts, complete with oil charge and inserted ina soundproof compartmentwith

sound‐absorbing material. Also complete with automatic oil heater to prevent the oil from being diluted by the

refrigerantwhenthecompressorstops.

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NOTE: Scroll compressors, like all air‐tight compressors, are classified as pressurised containers. The low pressure

section,referredtobythePSonthedataplate,complieswithPEDCE97/23.

1.3.2 Heat exchangers

Only brazed plate heat exchangers are used, made of austenitic stainless steel AISI 316, with AISI 316L connections.

These feat

urea reduced carbon content that favours brazing operations. Thebrazedplate heat exchangerrepresents

the state‐of‐the‐art in terms of thermal exchange efficiency and allows a strong reduction of the refrigerant load

comparedtostandardsolutions.Thehighlevelofturbulencegeneratedbyinternalplatecorrugation,alongwithplate

smoothness,makesit difficult for dirttoaccumulateorfor limescale to buildupon the con

densercircuit. These heat

exchangers also make it possible to use R410A fluid which, thanks to the high‐level thermal conductivity of its liquid

phaseandtoitsazeotropicbehaviour,enhancesthermalexc

hangeduringevaporation.Theperformancesareimproved

overothermethane‐derivativefluidsoftheHFCgroup.

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Galletti LEW CS/CL 042 Инструкция по эксплуатации онлайн [11/56] 466139

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