PAL - Technical Comparative Statement Between PAL Pre Insulated and GI

7/28/2019 PAL - Technical Comparative Statement Between PAL Pre Insulated and GI

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PAL MIDDLE EAST PIR LLC Pre-Insulated Ducting TechnologyP.O. Box : 113826 , DUBAI , UAETel . : +971 4 2582640 Fax : +971 4 2582641E-mai l : in fo@pa lduc t . comWebs i t e : www.pa l -me .ne t

Listing No. 016PAL Panel Class O

TECHNICAL COMAPARATIVESTATEMENT

SN Description/Characteristics Galvanized InsulatedDuctwork

Pal Pre-insulatedsandwich Panels duct

work 1. Hygiene/Health hazard

-Fabrication Fiberglass dispersion whilstcutting, cause for asthma-

like ailments

No such dispersion as thematerial does not disintegrate

whilst cutting- Service In a warm and humid

environment, laggingadhesives used andinsulation work lead toeventual growth of fungus,bacteria, mildew (typical‘black’ spots) and kind of

messy site job

Meets the requirement of IAQ(indoor air quality), speciallyimportant in clean roomapplications such as hospitals,laboratories, food processing,etc.

2. Quality control-Manufacturing Stage Numerous vendors(at least

5 different manufacturersinvolved)

Single-point quality assessment,ISO 9002

-On-site / Storage Continuous supervisionrequired in ensuingconformity to materialspecifications, workmethod, workmanship.

Adhesives used have muchsmaller shelf life.

Minimum supervision only. Assystem is factory supplied insemi-finished condition;deviations from set proceduresand materials specificationscannot occur.

3. Dead-Weight & Handling Heavy on structure & noteasy to handle

Lightweight 15 % of conventional G.I. insulatedducts.

4. Heat transfer ‘U’ = 0.033. (with 25mm thk.Insulation).

‘U’=0.021 (21mm panels). Dueto reduced losses, energyconversation programme /environmental protection.

5. Aesthetic Awful, If installed withoutfalse ceiling

Decorative



PAL MIDDLE EAST PIR LLC Pre-Insulated Ducting TechnologyP.O. Box : 113826 , DUBAI , UAETel . : +971 4 2582640 Fax : +971 4 2582641E-mai l : in fo@pa lduc t . comWebs i t e : www.pa l -me .ne t

Listing No. 016PAL Panel Class O

SN Description/Characteristics Galvanized InsulatedDuctwork

Pal Pre-insulatedsandwich Panels duct

work 6. Permeability, Solubility Slightest damage to aluminium

foil vapour barrier is cause for condensation on duct surface

and consequential damages toceilings/ finishes. Fiberglassabsorbs water, loses thermalproperties. Damp areas are

susceptible to mildew / fungalgrowth

Closed cell content is very high;water immersion test was

conducted. Whereas aluminiumfacing laminate if damaged, can

be repaired; the chances of vapour condensation and water

drip-off are practically non-existent; thereby the risk factor for consequential damages toceilings / finishes is eliminated

7. Longevity / Ageing Galvanization begins to oxidize/ deteriorate over period of time, especially when the

installation is external, exposedto weather

Prolonged life due to use of aluminium laminate, coated with

3 gm / m2 of special anti-rustlacquer on both sides (all

panels). In addition, dedicatedpanel for highly corrosive

environment is available. Thispanel has additional polyester

film on aluminium laminate8. Productivity Low; very high fatigue,

especially in summer. Bigger work force/ deployment.Extended time-frame /

completion

High; very low fatigue. Smaller work force / deployment. Faster

completion; can easilycompensate for initial delays

9. Logistics Added transportation to site,site storage facilities / space

consuming. Extensive handling/ requirement of service lifts,

hoists; heavy scaffoldings etc.

Site fabrication and installed.Minimum storage area.

Lightweight handling equipment.Panels and accessories are

moved and fabricated into ductsat the actual work place itself

(such as various floors of amulti-storey building).10. Administrative Large workforce requiring

added accommodation,sanitation, transport, mess /dining space, government

departmental costs,naturalization, gratuity, travel

costs, added supervisory staff.Extensive procurement,

documentation.

Much smaller workforce, lesssupervision and efficient /competitive management.

Singe point procurement,efficient, material control.



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PAL - Technical Comparative Statement Between PAL Pre Insulated and GI