Based on the experimental investigation on the PVTx behavior, the thermodynamic properties of HFC125/HFC152a were calculated with a modified form of CSD eqaution of state and mixing rules. It was shown that the ozone ...Based on the experimental investigation on the PVTx behavior, the thermodynamic properties of HFC125/HFC152a were calculated with a modified form of CSD eqaution of state and mixing rules. It was shown that the ozone safty binary mixture is a near-azeotropic ideal solution.展开更多
根据ASTME681-04及ANSI/ASHRAE Standard 34-2007标准,建立了一套全自动可燃性气体爆炸极限实验系统.该系统实际配气比例与设定比例的误差不超过±0.1%,配气比例的不确定度小于0.5%.对几种常见制冷剂的爆炸极限进行了测试,验证了系...根据ASTME681-04及ANSI/ASHRAE Standard 34-2007标准,建立了一套全自动可燃性气体爆炸极限实验系统.该系统实际配气比例与设定比例的误差不超过±0.1%,配气比例的不确定度小于0.5%.对几种常见制冷剂的爆炸极限进行了测试,验证了系统的准确性.对二甲醚/HFC125混合气体的爆炸极限进行了实验研究,结果表明,加入HFC125后二甲醚的可燃性范围减小,当HFC125与二甲醚的体积比为4.6时达到临界抑爆点,但HFC125含量较低时对二甲醚的阻燃作用不明显.该测试结果为将二甲醚作为一种环保型制冷剂进行推广应用提供了安全参考.展开更多
The specific heat capacities of HFC152a/HFC32(92%/8% wt) mixture in liquid phase used in the refrigerator as an alternative for CFC12 are determined and 32 values of heat capacity are reported in this paper.The puriti...The specific heat capacities of HFC152a/HFC32(92%/8% wt) mixture in liquid phase used in the refrigerator as an alternative for CFC12 are determined and 32 values of heat capacity are reported in this paper.The purities of HFC152a and HFC32 are all 99.95%.The flow apparatus for measuring heat capacities of liquid phase compounds and their mixtures under the pressure up to 12 MPa,and at temperatures from 26OK to 47OK was built by the authors.展开更多
文摘Based on the experimental investigation on the PVTx behavior, the thermodynamic properties of HFC125/HFC152a were calculated with a modified form of CSD eqaution of state and mixing rules. It was shown that the ozone safty binary mixture is a near-azeotropic ideal solution.
文摘根据ASTME681-04及ANSI/ASHRAE Standard 34-2007标准,建立了一套全自动可燃性气体爆炸极限实验系统.该系统实际配气比例与设定比例的误差不超过±0.1%,配气比例的不确定度小于0.5%.对几种常见制冷剂的爆炸极限进行了测试,验证了系统的准确性.对二甲醚/HFC125混合气体的爆炸极限进行了实验研究,结果表明,加入HFC125后二甲醚的可燃性范围减小,当HFC125与二甲醚的体积比为4.6时达到临界抑爆点,但HFC125含量较低时对二甲醚的阻燃作用不明显.该测试结果为将二甲醚作为一种环保型制冷剂进行推广应用提供了安全参考.
文摘The specific heat capacities of HFC152a/HFC32(92%/8% wt) mixture in liquid phase used in the refrigerator as an alternative for CFC12 are determined and 32 values of heat capacity are reported in this paper.The purities of HFC152a and HFC32 are all 99.95%.The flow apparatus for measuring heat capacities of liquid phase compounds and their mixtures under the pressure up to 12 MPa,and at temperatures from 26OK to 47OK was built by the authors.
