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1)  substitution of refrigerant
制冷工质替代
2)  alternatives [英][ɔ:l'tə:nətiv]  [美][ɔl'tɝnətɪv]
替代工质
1.
Based on sustainable development,CO_2 emerges as one of the most likely alternatives to the synthetic fluids in heat pump water heaters.
基于可持续发展观,CO_2成为热泵热水器系统最有潜力的替代工质之一。
2.
This paper discusses a simple method which is able to provide the COP and the capacity of a theoretical refrigerating cycle using alternatives as working fluids, by means of some new relative factors such as the reduced difference of the cycle temperature, the reduced suction temperature and subcooling temperature.
计算理论制冷系数与容积制冷量的简单关系式吴之春,马一太,吕灿仁,杨昭(天津大学热能研究所天津300072)关键词:关系式,热力循环性能,替代工质ASIMPLEPREDICTIONMETHEDWITHAPPLICATIONTOTHECOPANDTHEC。
3)  alternative refrigerant
替代工质
1.
Experimental study on performance of air source heat pumps with alternative refrigerants;
采用替代工质的空气源热泵性能试验研究
2.
In this paper, experimental studies are carried out on the suitability of alternative refrigerants of R32/R134a and R407C with polyester type lubricants of different models.
本文对替代工质 R3 2 /R13 4a和 R40 7C与不同型号的酯类 POE油的配合性进行了试验研究 。
3.
The refrigerator performance tests have been carried out using refrigerant CFC12 and its alternative refrigerant HFC152a/HCFC22.
对制冷剂为CFC1 2及其替代工质HFC1 5 2a/HCFC2 2时的冰箱性能进行了实验研究。
4)  refrigerant replacement
替代工质
1.
Based on the steady state distributed parameters model of the condensers which was put forward in the previous related reference the heat transfer and flow characteristics of four different two-rows condensers which used the refrigerant replacement(R407C,R410A,R134A)of R22 were studied.
结果表明:采用R22的3种替代工质时,冷凝器性能的变化规律基本一样,4种流路布置中,在随着管内冷媒流量的变化和随着冷凝器迎风面风速的变化两种工况下,逆流换热效果最好,其次是错流,顺流最差;在与R22为工质的冷凝器性能比较中,采用3种替代工质的冷凝器换热量及进出口压降的变化趋势基本一样;在3种替代工质中,R410A性能较好,换热量最大、压降最低,但其冷凝压力比R22高出60%左右,R134A压降较大,这两种都不是理想替代物,而R407C与R22在换热量及压降方面最为接近,是其理想的替代工质。
5)  alternative [英][ɔ:l'tɜ:nətɪv]  [美][ɔl'tɝnətɪv]
替代工质
1.
In order to solve the problem existing when using themain refrigerant alternative (R134a) to substitute R12 in a refrigerator,this paper presents a solution of using R134a with R600a as a newrefrigerant R134a/ R600a.
为了解决R12的主流替代工质R134a作为冰箱制冷剂时存在的问题,提出给R134a系统加入R600a组成混合工质R134a/R600a的方案,提供物性和热力性能比较结果,证明R134a/R600a作为冰箱制冷剂比R134a和R600a更具有优势,并提出了采用新型制冷剂的冰箱压缩机的改进方案。
2.
On the research of alternative refrigerants, because of their advantageous thermal characters and unparalleled prepondrance of environmental protection, kinds of HCs substance have taken more and more scholars attention.
在绿色环保替代工质的研究方面 ,由于其优越的热物性和无可比拟的环保优势 ,各类HCs类制冷工质正引起越来越多学者的注意。
3.
In order to study the alternatives in these heat pumps, thermodynamic properties and performance for alternative R32/134a were analyzed.
为了研究这种热泵的工质替代问题 ,就目前具有成功实验结果的水 -水热泵的替代工质之一 :R32 / 134a进行热力学及循环性能模拟分析 ,结果发现R32 / 134a当浓度为 (30 / 70 )时作为常规水 -水热泵工质具有较大优势。
6)  refrigerant replacement
工质替代
1.
Such latest researches as the profile of scroll compressor, scroll mechanism, thermodynamic analysis and refrigerant replacement were summarized.
阐述了涡旋压缩机发展历程以及在涡旋型线、平衡机构、热力学分析、工质替代、加工制造等方面的最新研究状况 ,并指出了在今后一段时间内涡旋压缩机的研究方
补充资料:制冷能力和制冷能力
分子式:
CAS号:

性质:又称制冷能力和制冷能力。表示冷冻机所能产生的冷效应。也就是在一定条件下冷冻机中冷冻剂从被冷冻的物体中取出热量的能力。一般以每小时吸取热量的焦耳数来表示。冷冻机的冷冻能力随着冷冻剂的蒸发温度、冷凝温度及其冷凝后的过冷温度而不同。对于相同的温度条件和一定的冷冻剂,冷冻能力又与所用冷冻机的大小、转速、容积效率和其他因素有关。为了统一标准,便于比较,冷冻工程上规定按照蒸发温度为-10℃、冷凝温度为+25℃、过冷温度为+15℃来计算的,称做正常冷冻能力。按照蒸发温度为-15℃、冷凝温度为+30℃、过冷温度为+25℃来计算的,称做标准冷冻能力。在工业生产上也有用冷冻吨为计算单位的。1冷冻吨等于在24h内能将h 0℃的水冻结成1t冰的能力,即334 400kJ/24h(80 000K cal/24h)或13 920kJ/h(3 330kcal/h)或232kJ/min(55.5kcal/min)。

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