制冷剂

In this paper, the main purpose is to study different refrigerants and different refrigeration systems at lower evaporating temperature in ideal cycle .

本文主要研究不同制冷剂及不同的制冷循环在较低蒸发温度下对制冷性能的影响。

With headquarters established in Canada, GreenKel is a large-scale multi-national group company manufactur in g and sell in g fluor in e-free coolant

总部设在加拿大的格林柯尔集团是生产和销售无氟新型制冷剂的大型跨国集团公司。

Currently,made up of 8 companies and 3 R %26amp; D institutes, Dongyue group has formed powerful industry fundaments and R %26amp; D platform and created hi-tech industrial chain and product group from fluorspar mining to AHF the base material of fluorchemical industry, from chloride methane to environment friendly protection refrigerants, and to fluoropolymer and post-treated products, up to top tech product HFP, VDF, TFE,PFSA and ion membrane etc.

集团拥有8个企业和三个科研机构，形成了强大的产业基础和研发平台，建成了从氟矿石开采到氟化工基础材料无水氟化氢，从甲烷氯化物到绿色环保制冷剂，再到含氟高分子材料及其深加工，以至到尖端技术六氟丙烯、偏氟乙烯、全氟乙烯、全氟离子交换树脂及离子膜等组成的高新技术产业链和产业群。

It wasn't long before Freon was being installed in fridges throughout the world.

不久后，全世界都把氟利昂作为冰箱的制冷剂，并被广泛使用。

Freon will not be used as refrigerant in the future.

未来的制冷剂将不会使用氟利昂。

Methods to accomplish this have been demonstrated using compressed air, as well as refrigerants like Freon.

完成压缩空气的论证，以及用像氟利昂这种的制冷剂。

Finally, the system through the use of green refrigeration for quality, a decrease of freon coolant use, and reduce the damage to the ozone layer, reflect ecological and environmental protection.

最后，系统通过使用绿色环保制冷工质，减少了氟利昂制冷剂的使用，减少对大气臭氧层的破坏，体现生态和环保的理念。

Substituting propane for common Freon refrigerants has a good future for protecting environment and saving energy.

摘 要 使用R290替代现有的氟利昂制冷剂，对保护环境、节约能源有着很好的应用前景。

An ideal defrost model was presented based on the fundamental conservation equations and experimental results.

在热气除霜实验研究的基础上，从基本守衡定律出发，提出了风冷热泵热气除霜过程的动态特性模型，重点模拟了这一过程中霜层侧的传热传质和制冷剂侧压力变化情况。

Based on thermodynamics,the relationship between the ideal-gas heat capacity at constant pressure and the speed of sound in the gaseous phase was analyzed.

在本套实验系统上测得了一批高精度的新环保制冷剂的气相声速数据，并可进一步确定其理想气体比定压热容。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。