摘要
在一些规范、标准和参考书中所引用的管道绝热层经济厚度计算公式,其原始推导均未把绝热层本身费用和防潮保护层费用分开列项,致使最终列出的公式造成较大的误差;作者提出了经济厚度计算公式的修改意见,和分析了(98T902)国家标准图推荐的保冷厚度的不经济、不合理之处,供讨论。
In the formula for calculating the economic thickness of ducts insulation quoted in some codes, standards and references, the cost for the insulation itself and for the damp barrieris not itemized in the original derivation, resulting in the remarkable deviation in the final formula. In this paper, the author has put forward some correction comments for discussion on the economic thickness calculating formula and analyzed the non - economic and non - practical cold insulation thickness recommended in the national standard chart (98T920).
出处
《洁净与空调技术》
2001年第1期12-15,共4页
Contamination Control & Air-Conditioning Technology
