1) Moderate and high temperature heat pump working fluid
新型中高温热泵工质
3) new refrigerant of medium-high temperature heat pump water heater
中高温热泵热水器新工质
4) medium-high temperature heat pump
中高温热泵
1.
Summarizes the research works and achievements in four fields, including alternative of HFC-134a in automobile air conditioning, alternative of CFC in centrifugal chillers in service, alternative of HCFC-22 and development of refrigerants in medium-high temperature heat pumps.
总结了汽车空调HFC-134a替代、在用离心式冷水机组CFC替代、HCFC-22的替代和中高温热泵工质开发四个领域内的研究工作及研究成果。
2.
The properties of medium-high temperature heat pump fluids were calculated with CSD equation,and the operational capability of different fluids was analyzed.
利用CSD方程对中高温热泵工质进行了理论计算,分析了不同工质的循环性能。
5) moderate and high temperature heat pump
中高温热泵
1.
Research on cycle working fluids for moderate and high temperature heat pump systems;
中高温热泵系统循环工质的研究
2.
Optimal design is done for water to water moderate and high temperature heat pump system from the viewpoint of saving energy and materials.
本文以节能节材为目的,对水-水中高温热泵系统进行了优化设计,以经济参数F为目标函数对系统进行经济性评价。
3.
A new non-azeotropic mixture has been proposed as the working fluid for moderate and high temperature heat pump applications at the condensing temperature range of 90 ℃-110℃ based on theoretical analysis and experimental investigations.
提出了一种适用于90-110℃冷凝温度范围的HFC类中高温热泵非共沸混合工质,其理论循环性能优于CFC114,实测COP为纯工质HFC245fa的97。
6) moderate and high temperature heat pumps
中高温热泵
1.
Four kinds of phenomena in moderate and high temperature heat pumps are found, which those are clear difference between theory and experiments, for example, the COP may be reduced with condensation temperature drop or working frequency of compressor decreasing.
在对中高温热泵进行了大量的试验研究之后,发现了四种有别于理论分析结果的试验现象,如冷凝温度下降,COP也下降;压缩机转数降低,COP降低等。
2.
To utilize the industrial waste heat,the green refrigerants of moderate and high temperature heat pumps were researched on its cyclic properties in theory and by experiments.
针对工业生产中存在大量可资利用的余热资源,以能够利用余热资源的中高温热泵系统为研究对象,对绿色非共沸混合工质及其循环特性展开了理论和实验分析。
补充资料：新型高温热锻模材料TH66合金
一 综述
TH66合金以镍为基体，同时添加强化元素铝，钛和难熔金属铌发展而成的时效硬化型合金。该合金具有良好的综合性能，晶粒均匀细小，屈服强度高，在高温工作环境中组织稳定。适合于在温度为750-800℃的工作环境中长期使用。
二 合金的成分及性能指标
1 合金成分如下表
C Cr Al Ti Nb Ni
0.05 21 1.0 2.8 1.5 基
2 物理及化学性能
2.1热导率
θ/℃ 100 200 300 400 500 600 700 800
12.1 14.2 16.7 18.8 21.4 23.7 26.2 29.1
2.2线膨胀系数
θ/℃ 20-100 20-200 20-300 20-400 20-500 20-600 20-700 20-800 20-900
11.6 12.3 12.4 13.3 13.8 14.4 15.1 15.7 16.5
2.3密度 8.21g/cm3
2.4抗氧化性能
在空气介质中试验后的氧化速率见表
2.5力学性能
室温硬度为HBS262-363 但在高温下硬度值几乎不变。
2.6 合金在750度时不同应力下持久时间2.7热疲劳性能
三 结论
从该合金的成分以及各种性能指标来看，该合金非常适合在800以下的工作环境中长期使用。是在750-800环境中使用的工模具钢的良好替代钢种。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条