A small volume radon progeny aerosol control device and its performance

饱和室温度 Temperature of saturation room / ℃	饱和室流量计 Flow rate of saturation room / L·min^-1	筛网旁路流量计 Flow rate of screen bypass / L·min^-1	TSI 3475输出口 Output of TSI 3475		稀释室稳定时 Stable in dilution tank
饱和室温度 Temperature of saturation room / ℃	饱和室流量计 Flow rate of saturation room / L·min^-1	筛网旁路流量计 Flow rate of screen bypass / L·min^-1	浓度 Concentration / cm^-3	相对标准偏差 RSD / %	浓度 Concentration / cm^-3	相对标准偏差 RSD / %
125	2.5	6	$1.4 \times 10^{6}$	5.7	$1.4 \times 10^{5}$	6.2
125	2.5	7	$5.8 \times 10^{5}$	5.9	$4.3 \times 10^{4}$	3.5
120	2.5	7.3	$3.1 \times 10^{4}$	4.1	$4.0 \times 10^{3}$	4.7

Table 2. Theoretical and experimental results of radon concentration in control tank

View table

View in Article

Table 2. Theoretical and experimental results of radon concentration in control tank

氡浓度状况

Radon concentration status

氡浓度理论值

Theoretical radon

concentration / Bq·m^-3

氡浓度实验平均值

Experimental average

radon concentration / Bq·m^-3

相对偏差

Relative deviation / %

低氡浓度C_Rn1 Low radon concentration C_Rn1

2 180

2 098±126

3.7

高氡浓度C_Rn2 High radon concentration C_Rn2

21 795

21 113±1 524

3.1

Table 3. Experimental results of C_Rn1 and C_ae1

View table

View in Article

Table 3. Experimental results of C_Rn1 and C_ae1

循环流率 Circulation flow rate / L·min^-1	稳定后计时Time / min	氡活度浓度 Radon concentration / Bq·m^-3	气溶胶浓度 Aerosol concentration / cm^-3	平衡当量氡浓度 EEC / Bq·m^-3	平衡因子 Equilibrium factor	未结合态份额Unattached fraction / %
0	60	2 084±127	1 267	587±52	0.28	36.4±1.6
	120	2 066±127	1 298	578±51
	180	2 148±128	1 313	601±56
	240	2 099±127	1 297	588±52
20	60	2 136±134	377	341±28	0.16	46.8±2.7
	120	2 111±128	375	337±26
	180	2 087±131	387	334±26
	240	2 056±132	384	329±24

Table 4. Experimental results of C_Rn1 and C_ae2

View table

View in Article

Table 4. Experimental results of C_Rn1 and C_ae2

循环流率 Circulation flow rate / L·min^-1	稳定后计时 Timing after stabilization / min	氡活度浓度 Radon concentration / Bq·m^-3	气溶胶浓度 Aerosol concentration / cm^-3	平衡当量氡浓度EEC / Bq·m^-3	平衡因子 Equilibrium factor	未结合态份额 Unattached fraction / %
0	60	2 050±132	30 960	1 189±112	0.58	1.4±0.01
	120	2 133±131	30 960	1 237±116
	180	2 061±129	30 883	1 215±114
	240	2 036±126	30 858	1 160±112
20	60	2 089±129	11 823	459±42	0.22	4.3±0.01
	120	2 121±131	11 798	466±47
	180	2 107±125	11 846	463±47
	240	2 042±132	1 1847	451±41
40	60	2 137±126	6 082	384±37	0.18	9.7±0.4
	120	2 031±134	6 146	365±33
	180	2 076±129	6 123	377±34
	240	2 041±129	6 142	367±33

Table 5. Experimental results of C_Rn2 and C_ae1

View table

View in Article

Table 5. Experimental results of C_Rn2 and C_ae1

循环流率 Circulation flow rate / L·min^-1	稳定后计时 Time / min	氡活度浓度 Radon concentration/ Bq·m^-3	气溶胶浓度 Aerosol concentration / cm^-3	平衡当量氡浓度 EEC / Bq·m^-3	平衡因子 Equilibrium factor	未结合态份额Unattached fraction / %
0	60	21 364±1 428	1 333	8 331±542	0.39	38.2±1.6
	120	20 834±1 452	1 236	8 125±527
	180	20 685±1 644	1 398	8 067±513
	240	20 875±1 554	1 220	8 145±529
20	60	20 798±1 585	376	4 991±342	0.24	49.2±2.1
	120	21 254±1 393	395	5 103±366
	180	21 591±1 440	384	5 186±374
	240	21 479±1 443	388	5 155±373
40	60	20 561±1 638	97	2 467±231	0.12	62.7±2.5
	120	20 692±1 545	90	2 483±236
	180	21 553±1 437	96	2 586±242
	240	20 601±1 540	91	2 472±234

Table 6. Experimental results of C_Rn2 and C_ae2

View table

View in Article

Table 6. Experimental results of C_Rn2 and C_ae2

循环流率 Circulation flow rate / L∙min^-1	稳定后计时Time / min	氡活度浓度 Radon concentration / Bq·m^-3	气溶胶浓度 Aerosol concentration/ cm^-3	平衡当量氡活度浓度EEC / Bq·m^-3	平衡因子 Equilibrium factor	未结合态份额Unattached fraction / %
0	60	20 652±1 643	29 904	9 297±637	0.45	1.9±0.1
	120	21 440±1 732	28 847	9 644±686
	180	20 999±1 710	29 433	9 450±655
	240	20 948±1 657	30 942	9 431±681
20	60	21 574±1 539	10 672	6 687±491	0.31	5.4±0.2
	120	20 855±1 638	10 221	6 472±476
	180	21 367±1 425	9 976	6 613±488
	240	21 531±1 636	10 078	6 649±491
40	60	20 648±1 457	5 905	4 749±328	0.23	7.8±0.2
	120	20 612±1 541	5 821	4 741±323
	180	20 587±1 539	5 816	4 735±317
	240	20 687±1 444	6 006	4 759±329

Tools

Get Citation

Copy Citation Text

Tianyu DENG, Jian SHAN, Xiangming CAI, Haoxuan LI, Hongliang LI, Xuwei ZENG. A small volume radon progeny aerosol control device and its performance[J]. NUCLEAR TECHNIQUES, 2024, 47(10): 100401

Download Citation

EndNote(RIS)BibTex Plain Text

Set citation alerts for article

Save article for my favorites