Aislamiento de espumas handbook

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  • Publicado : 23 de febrero de 2011
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Frequently Asked Questions
1. How Does Insulation Help Control Condensation?
2. What are Firestops?
3. How and Why is Insulation Used to Control Sound?
4. What Are the Insulation Selection Criteria for High Temperature Systems?
5. How Do You Choose the Right Insulation for the Job?
6. What Kind of Things Should You Consider When Insulating Cold Process Systems?
7. What is the DifferenceBetween HSPP and CHSPP?
8. What is an Insulation Energy Appraisal?
9. Where Can I Get Information on Specification Requirements?
10. How Do You Determine Which is the Right Protective Covering and Finish?
11. What is Meant by K-Factor, R-Value and C-Factor?
12. What is the Difference Between Mean Temperature and Ambient Temperature?
13. How do I find Material Safety Data Sheets (MSDS)?
14. Ihave a question about insulation in my home...
15. I have a question about a specific insulation product (non-residential).
1. How Does Insulation Help Control Condensation?
When piping and equipment operate at temperatures lower than the ambient air, moisture in the air will condense, or freeze, on or within the insulation surface - or on the cold pipe surface. Unless the system is protectedby sufficient thickness and by adequate vapor retarders, the insulation can become wet, causing corrosion, and causing it to become ineffective.
Specifying sufficient insulation thickness with an effective vapor retarder system is the most effective means of providing a system for controlling condensation on the membrane surface and within the insulation system on cold piping, ducts, chillersand roof drains. Sufficient insulation thickness is needed to keep the surface temperature of the membrane above the highest possible design dewpoint temperature of the ambient air so condensation does not form on the surface.
The effective vapor retarder system is needed to restrict moisture migration into the system through the facing, joints, seams, penetrations, hangers, and supports. Bycontrolling condensation, the system designer may control the potential for:
• Degrading system service life and performance.
• Mold growth and the potential for health problems resulting from water condensate.
• Corrosion of pipes, valves and fittings caused by water collected and contained within insulation system.
2. What are Firestops?
Firestops are products specifically designedto stop smoke, toxic fumes, super-heated gases, and fire from migrating from one room to another, or from one floor to another. Firestops are used to restore the entire structure, via each individually penetrated partition, to its original fire-rated integrity.
Firestops are available in a range of products to accommodate the multitude of different types of penetrating items passing through thedifferent size openings.
All firestopping should be done in strict accordance with local building codes and National Fire Protection Association (NFPA) guidelines. Material should be installed according to manufacturers specifications by qualified craftsmen.
3. How and Why is Insulation Used to Control Sound?
Sound attenuation, or the limiting of sound propagation from one area toanother, requires the application of special and standard insulation materials to encase or enclose the noise generating source, forming a sound barrier between the source and the surrounding area.
The purposes of applying sound attenuation materials are to:
1. Reduce obnoxious noise levels emitting from machines, equipment, pipe lines or enclosures.
2. Reduce general noise level in plant areas.3. Provide for better work conditions.
4. Comply with noise level standards of OSHA and EPA.
4. What Are the Insulation Selection Criteria for High Temperature Systems?
Examples of super hot systems include high pressure steam lines, process lines, exhaust systems, or any systems that operate at temperatures from 601°F to 1500°F. Reducing heat loss and protecting personnel is the...