ASTM C1696-16
工业用绝热系统的标准指南
Standard Guide for Industrial Thermal Insulation Systems
- 标准号
- ASTM C1696-16
- 发布
- 2016年
- 发布单位
- 美国材料与试验协会
- 替代标准
- ASTM C1696-20
- 当前最新
- ASTM C1696-20
- 引用标准
- ASTM A167 ASTM A240/A240M ASTM A653/A653M ASTM A792/A792M ASTM B209 ASTM C1029 ASTM C1055 ASTM C1104/C1104M ASTM C1126 ASTM C1139 ASTM C1289 ASTM C1393 ASTM C1427 ASTM C1511 ASTM C1559 ASTM C1617 ASTM C165 ASTM C167 ASTM C168 ASTM C177 ASTM C1775 ASTM C195 ASTM C203 ASTM C209 ASTM C240 ASTM C272/C272M ASTM C302 ASTM C303 ASTM C335/C335M ASTM C351 ASTM C356 ASTM C411 ASTM C446 ASTM C447 ASTM C449 ASTM C450 ASTM C518 ASTM C533 ASTM C534/C534M ASTM C547 ASTM C552 ASTM C553 ASTM C578 ASTM C591 ASTM C592 ASTM C610 ASTM C612 ASTM C665 ASTM C680 ASTM C692 ASTM C795 ASTM C871 ASTM D1621 ASTM D1622/D1622M ASTM D2126 ASTM D2842 ASTM D3574 ASTM E136 ASTM E176 ASTM E2652 ASTM E659 ASTM E84 ASTM E96/E96M
- 适用范围
4.1 When choosing a thermal insulation product or combination of products, physical, chemical and mechanical properties and the significance of those properties should be considered. ASTM test methods are usually performed under laboratory conditions and may not accurately represent field conditions depending on process temperature, environment, and operating conditions. Performance results obtained using ASTM test methods can be used to determine compliance of materials to specifications but do not necessarily predict installed performance. Values stated in the ASTM material standards are those that apply to the majority of materials and not to any specific product; other tested values may exist for specific material applications.
4.2 Design of thermal insulation systems requires the understanding of process requirements, temperature control, heat loss criteria, control of thermal shock, and mechanical forces on insulation generated by thermal gradients and wind environmental conditions. Sometimes, the mechanical design of piping and equipment needs to be modified to support insulation adequately and provide for insulation weatherproofing. Process requirements may dictate the control of critical temperature to prevent freezing, maintain viscosity, or minimize internal corrosion. When handling heat transfer fluids such as ethylene oxide or hot oils, the selection of insulation materials and the insulation system design becomes critical. whereby If these fluids are absorb in insulation materials, the fluid flash point could be below the fluid operating temperature. Specified heat gain or heat loss and acceptable surface temperatures could also dictate thermal design of insulation systems. Environmental corrosivity, high wind, and extreme ambient temperatures affect the selection of weatherproofing and methods of its securement. A combination of these factors plays a significant role in the selection of insulation materials and application methods to provide long-lasting trouble-free service.
4.3 Application methods are generally defined by the purchaser's specifications. However, some specialty insulation systems, such as prefabricated insulation panels for ductwork, precipitators, and tanks, will also have supplemental installation requirements specified by the insulation system manufacturer. defined by the specification of the manufacturer.
4.4 In any application of thermal insulation, the insulation requires protection of some type, be it protection from the elements such as rain, snow, sleet, wind, ultraviolet solar radiation, protection from external forces that can cause mechanical damage, vapor passage, fire, chemical attack, or any combination of these. This protection can be provided in by metal, plastic, coated or laminated composites or both, mastic coatings, or a combination of the above depending upon the application, service, and economic requirements. Considering the enormous overall cost of a new facility, and comparing the initial cost of the insulated portion as a small percentage of that overall cost with the substantially increased operating cost as a result of inefficient insulation protection, it is common sense to provide only the best insulation system available and the best protection for that long-term investment consistent with the appropriate design and economic requirements. Usually a new facility is very expensive and the initial cost of the insulation portion is a small percentage of that overall cost. However, increased operating costs can result from inefficient protection.