工程热力学实验数据处理结果

1、.一、气体定压比热测定实验空气在流量计出口处的干球温度 、湿球温度，当地大气压kpa ,得空气含湿量13.76g/kg算得水蒸气的容积成分；流量计出口处的表压cm；水蒸气分压pa，干空气分压pa干空气流量（质量流量）为：, (kg/s)；水蒸气流量为：, (kg/s)数据记录建议设定温度（）加热功率(w)空气流量s/10l干球温度（）湿球温度（）流量计进口温度（）出口温度（）风机出口压差(cmh2o)304.5327.0020.0019.3019.0030.001.406019.4027.0020.0019.3019.0060.001.409035.5327.0020.0019.3019.00

2、90.001.4012053.0527.0020.0019.3019.00120.001.4013360.6427.0020.0019.3019.00133.001.40数据处理和曲线绘制 1、数据处理建议设定温度（）含湿量(g/kg)干空气水蒸气容积成分干空气流量(kg/s)水蒸气流量(kg/s)水蒸气吸收热量(j/s)干空气定压比热(j/kg/)3013.762.16%4.35e-45.99e-60.12921.66013.762.16%4.35e-45.99e-60.451062.59013.762.16%4.35e-45.99e-60.791124.812013.762.16%4.35

3、e-45.99e-61.121182.0精品.13313.762.16%4.35e-45.99e-61.271197.2二、二氧化碳临界状态观测及p-v-t关系测定室温21 ,大气压 0.1011 mpa , 25, 7.8mpa下co2柱高度ho = 0.048_m ,质面比常数k = 38.71 kg/m2表2-1 co2等温实验原始记录 t=25.0t=31.1（临界）t=40.0p(mpa)hv=h/k现象p(mpa)hv=h/k现象p(mpa)hv=h/k现象4.4132.40.008274.4134.00.008784.5534.70.008694.9027.60.007135.3

4、925.50.006594.9031.60.008165.3923.50.006075.8821.80.005635.3927.80.007185.8819.60.005066.3718.40.004755.8824.20.006256.3715.70.004066.8615.10.003906.3721.30.00550精品.6.5014.30.00369开始液化7.2012.30.003186.8618.60.004816.535.20.00135全部液化7.2511.80.00305接近临界点7.3516.00.004136.865.10.001327.3510.00.002587.5514.90.003857.354.90.001277.407.90.002047.7014.20.003677.844.80.001247.845.50.001427.8413.60.003518.004.80.001248.005.30.001378.0012.70.00328进行等温线实验所需时间 分钟分钟分钟403025精品.精品.图2-4表2-2 临界比容vcm3/kg标准值实验值vc=