Thermodynamic performance comparison and experimental study of mixed refrigerant R134a/R1234yf (R513A) and R134a

doi:10.16085/j.issn.1000-6613.2018-1185

Abstract

Abstract:

R513A (R134a/R1234yf, 56/44% weight) is a new kind of environment friendly alternative blend refrigerant based on R1234yf and R134a with low GWP, which is non-flammable. The new refrigerant R513A was selected as a substitute for R134a in a domestic refrigerator, and the experiment was carried out according to standard BS EN ISO 15502-2005. The performance of R513A and R134a in refrigerators was studied through three kinds of aspects, namely, pull down time, energy consumption, and freezing capacity. The experimental results showed that the cooling time of R513A under the optimal charge was 21% lower than that of R134a. In the 24h test, the 24h energy consumption of R513A is 3.5% lower than that of R134a, and the percentage running time ratio of R513A is lower than that of R134a. During the freezing test, the time taken for the M-packages to reach the same temperature, under the same condition, R513A saved 43.2min compared to that of R134a. In addition, the exhaust temperature of R513A was lower than that of R134a, and the other parameters were close to R134a. From the experimental results, it can be concluded that R513A can directly replace R134a without any changes to the original refrigerator system.

Key words: R134a, R513A, thermodynamic properties, alternative performance

摘要：

R513A是由R134a/R1234yf（质量分数比为56∶44）组成的新型环保制冷剂，其全球变暖潜能（GWP）值低，不可燃。选择混合制冷剂R513A作为研究对象，在原R134a家用电冰箱中进行制冷剂的替代实验研究。实验依据标准BS EN ISO 15502—2005中规定的工况进行，主要从降温时间、耗电量和冷冻能力三方面对R513A在电冰箱中的性能进行评估并与R134a进行对比。实验结果表明：最佳充注量下，R513A降温时间相比R134a降低21%；24h耗电量实验中相比R134a，R513A系统耗电量降低了3.5%，系统稳定运行时R513A的启停率小于R134a；冷冻能力实验中，同一工况下M包达到相同设定温度，R513A比R134a用时少约42.3min。此外在系统稳定运行时，R513A的系统排气温度低于R134a，其他参数和R134a很接近。通过对比实验可知，在未对原冰箱系统进行任何改动的情况下，R513A可以作为R134a的替代制冷剂直接充注到系统中使用。

关键词: R134a, R513A, 热力学性质, 替代性能

CLC Number:

Meng YANG,Hua ZHANG,Yanbin QIN,Zhaofeng MENG. Thermodynamic performance comparison and experimental study of mixed refrigerant R134a/R1234yf (R513A) and R134a[J]. Chemical Industry and Engineering Progress, 2019, 38(03): 1182-1189.

杨梦,张华,秦延斌,孟照峰. 混合制冷剂R134a/R1234yf(R513A)与R134a热力学性能对比及实验[J]. 化工进展, 2019, 38(03): 1182-1189.

Figures/Tables 17

References 25

1	Chemical Production Division Canada . Consultation document: proposed regulatory measures on hydrofluorocarbons[EB/OL]. 2015.http∶//www.ec.gc.ca/ozone/default.asp?lang=En&n=77A94123-1.
2	The European Parliament and the Council of the European Union . Regulation (EU) No 517/2014 of the European parliament and the council of 16 April 2014 on fluorinated greenhouse gases and repealing regulation (EC) No 842/2006 text with EEA relevance[J]. Official J. Eur. Union, 2014, 57(L 150): 195-230.
3	陈敬良, 史琳, 李红旗, 等 . 由制冷剂替代谈起[J]. 制冷与空调, 2017,17(9):1-5.
	CHEN J L , SHI L , LI H Q , et al . Reflection on refrigerant substitution[J]. Refrigeration and Air-Conditioning, 2017, 17(9): 1-5.
4	MCLINDEN M O , BROWN J S , BRIGNOLI R , 等 . 低GWP值制冷剂的有限选择[J]. 暖通空调, 2017, 47(8): 41-50.
	MCLINDEN M O , BROWN J S , BRIGNOLI R , et al . Limited option for low-global-warming-potential refrigerants[J]. Journal of HV&AC, 2017, 47(8): 41-50.
5	GRAZIOSI F , ARDUINI J , FURLANI F , et al . European emissions of the powerful greenhouse gases hydrofluorocarbons inferred from atmospheric measurements and their comparison with annual national reports to UNFCCC[J]. Atmospheric Environment, 2017, 158: 85-97.
6	Proposal for a council decision on the conclusion of the agreement to amend the montreal protocol on substances that deplete the ozone layer adopted in Kigali . Brussels, Belgium European Commission[Z]. 2017.
7	MOTA-BABILONI A , NAVARRO-ESBRI J , BARRAGAN-CERVERA A , et al . Analysis based on EU regulation No 517/2014 of new HFC/HFO mixtures as alternatives of high GWP refrigerants in refrigeration and HVAC systems[J]. International Journal of Refrigeration, 2015, 52: 21-31.
8	张朝晖, 陈敬良, 高钰, 等 . 制冷空调行业制冷剂替代进程解析[J].制冷与空调, 2015, 15(1): 1-8.
	ZHANG Z H , CHEN J L , GAO Yet al . Process of refrigerant substitution in R&AC industry[J]. Refrigeration and Air-Conditioning, 2015, 15(1): 1-8.
9	WANG X D , AMRANE K . AHRI low global warming potential alternative refrigerants evaluation program (low-GWP AREP)-summary of phase I testing results[J]. Journal of the Taiwan Institute of Chemical Engineers, 2014, 45(3): 996-1000.
10	NAVARRO-ESBRI J , MENDOZA-MIRANDA J M , MOTA-BABILONI A , et al . Experimental analysis of R1234yf as a drop-in replacement for R134a in a vapor compression system[J]. International Journal of Refrigeration, 2013, 36(3): 870-880.
11	MOTA-BABILONI A , NAVARRO-ESBRI J , BARRAGAN A , et al . Drop-in energy performance evaluation of R1234yf and R1234ze(E) in a vapor compression system as R134a replacements[J]. Applied Thermal Engineering, 2014, 71(1): 259-265.
12	SANCHEZ D , CABELLO R , LLOPIS R , et al . Energy performance evaluation of R1234yf, R1234ze(E), R600a, R290 and R152a as low-GWP R134a alternatives[J]. International Journal of Refrigeration, 2016, 74: 269-282.
13	BELMAN-FLORES J M , RODRIGUEZ-MUNOZ A P , PEREZ-REGUERA C G , et al . Experimental study of R1234yf as a drop-in replacement for R134a in a domestic refrigerator[J]. International Journal of Refrigeration, 2017, 81: 1-11.
14	VAGHELA J K . Comparative evaluation of an automobile air-conditioning system using R134a and its alternative refrigerants [J]. Energy Procedia, 2017, 109: 153-160.
15	DAVIRAN S , KASAEIAN A , GOLZARI S , et al . A comparative study on the performance of HFO-1234yf and HFC-134a as an alternative in automotive air conditioning systems[J]. Applied Thermal Engineering, 2017, 110: 1091-1100.
16	DEVECIOĜLU A G , ORUC V . Characteristics of some new generation refrigerants with low GWP[J]. Energy Procedia, 2015, 75: 1452-1457.
17	MAKHNATCH P , MOTA-BABILONI A , KHODABANDEH R , et al . Experimental study of R450A drop-in performance in an R134a small capacity refrigeration unit[J]. International Journal of Refrigeration, 2017, 84: 26-35.
18	孟照峰,张华,秦延斌,等 . R1234yf/R134a混合物在汽车空调中替代R134a 的实验研究[J]. 化工学报, 2018, 69(2): 2396-2403.
	MENG Z F , ZHANG H , QIN Y B , et al . Experimental study on R1234yf/R134a mixture as alternative to R134a in automobile air conditioner[J]. CIESC Journal, 2018, 69(2): 2396-2403.
19	MENDOZA-MIRANDA J M , MOTA-BABILONI A , NAVARRO-ESBRI J . Evaluation of R448A and R450A as low-GWP alternatives for R404A and R134a using a micro-fin tube evaporator model[J]. Applied Thermal Engineering, 2016, 98: 330-339.
20	SHAPIRO D . Drop-in testing of next-generation R134a alternates in a commercial bottle cooler/freezer[C]// International Refrigeration and Air Conditioning Conference at Purdue, Purdue . 2012.
21	MOTA-BABILONI A , MAKHNATCH P , KHODABANDEH R , et al . Experimental assessment of R134a and its lower GWP alternative R513A[J]. International Journal of Refrigeration, 2017, 74: 682-688.
22	RIGHETTI G , ZILIO C , LONGO G A . Comparative performance analysis of the low GWP refrigerants HFO1234yf, HFO1234ze(E) and HC600a inside a roll-bond evaporator[J]. International Journal of Refrigeration, 2015, 54: 1-9.
23	APREA C , GRECO A , MAIORINO A . An experimental investigation on the substitution of HFC134a with HFO1234yf in a domestic refrigerator[J]. Applied Thermal Engineering, 2016, 106: 959-967.
24	APREA C , GRECO A , MAIORINO A . An experimental investigation of the energetic performances of HFO1234yf and its binary mixtures with HFC134a in a household refrigerator[J]. International Journal of Refrigeration, 2017, 76: 109-117.
25	霍二光, 戴源德, 耿平,等 . R1234ze与R152a混合制冷剂替代R22的可行性[J]. 化工学报, 2015, 66(12): 4725-4729.
	HUO E G , DAI Y D , GENG P , et al . Feasibility of using R1234ze and R152a mixture as alternative for R22[J]. CIESC Journal, 2015, 66(12): 4725-4729.

装置	类型	精度	量程
热电偶	T形	±0.1℃	–50～100℃
压力传感器	TM NS-I1	±0.05% FS	0～2MPa
功率计	YOKOGAWA WT230	±0.1%	3000W

装置	类型	精度	量程
热电偶	T形	±0.1℃	–50～100℃
压力传感器	TM NS-I1	±0.05% FS	0～2MPa
功率计	YOKOGAWA WT230	±0.1%	3000W

项目	R134a	R1234yf	R513A
组分	纯	纯	R134a/R1234yf 44/56^①
安全等级	A1	A1	A1
摩尔质量/g·mol^-1	102.03	114.04	108.43
GWP	1430	A1	570^[13]
标准沸点/℃	–26.07	<1.00	–28.30
临界温度/℃	101.06	–29.45	97.70
临界压力/MPa	4.06	94.70	3.70
临界密度/kg·m^-3	511.90	3.38	490.90
温度滑移^②/℃	0	475.600	0.015
潜热^③/kJ·kg^-1	198.60	0	171.27
液体密度^③/kg·m^-3	1294.8	163.3	1226.5
气体密度^③/kg·m^-3	14.4	1176.3	16.1
液相热导率^③/mW·m^-3·℃^-1	92.0	17.6	79.9
气相热导率^③/mW·m^-3·℃^-1	11.5	71.5	11.7
液相黏度^③/μPa·s	266.5	11.6	232.2
气相黏度^③/μPa·s	10.7	208.3	10.5

项目	R134a	R1234yf	R513A
组分	纯	纯	R134a/R1234yf 44/56^①
安全等级	A1	A1	A1
摩尔质量/g·mol^-1	102.03	114.04	108.43
GWP	1430	A1	570^[13]
标准沸点/℃	–26.07	<1.00	–28.30
临界温度/℃	101.06	–29.45	97.70
临界压力/MPa	4.06	94.70	3.70
临界密度/kg·m^-3	511.90	3.38	490.90
温度滑移^②/℃	0	475.600	0.015
潜热^③/kJ·kg^-1	198.60	0	171.27
液体密度^③/kg·m^-3	1294.8	163.3	1226.5
气体密度^③/kg·m^-3	14.4	1176.3	16.1
液相热导率^③/mW·m^-3·℃^-1	92.0	17.6	79.9
气相热导率^③/mW·m^-3·℃^-1	11.5	71.5	11.7
液相黏度^③/μPa·s	266.5	11.6	232.2
气相黏度^③/μPa·s	10.7	208.3	10.5

制冷剂	充注量/g	E _d/W·h	t _run/min	t _off/min	R
R134a	85	1351.5	20.3	10.7	0.65
R513A	80	1265.3	16	13	0.55