自控大型双呼吸测热室的研制

Tne New Automated Open and Shut Large Respiration Chambers

新型自控大型开闭式呼吸测热室经自行设计研制已获成功。每个室的容积约18200立升.室壁由1—1.6cm厚的塑料板深度焊接而成一整体,并有10cm厚的绝热层,采用充气门封技术,气密性好,容易加工和维修,造价低廉。用容积补偿装置保持内外气压相等。呼吸室的机械系统,运转,气体采样及分析,数据处理、运算及结果的打印均由1台微机自动控制。全部采用国产材料和仪器。经燃烧模拟呼吸试验表明CO_2和O_2的R^2均达到0.999。经香猪的绝食代谢和阉牛维持饲养水平代谢产热试验表明测定性能很稳定。

The new automated open and shut large respiration double chambers have been designed and constructed by our own with a high standard. The volum of each chamber is about 18200 liters. Its inner walls were made by thick plastic plate with heat insulator, which is easy welding and low cost. A new design of air compensator can maintain the equilibrium pressure between the atmosphere and chamber. Chambers op- eration, data acquisition, calculation and printout are fully automated by a Beijing TP805 computer. Calibration with methanol combustion indicates that r2 = 0.999 for both Co2 and O2.