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TECHNICAL NOTES
Component Selection & Structure
Compressors, heat exchangers, expansion devices, oil separators and piping.
Component Selection & Structure
Component Selection & Structure
Component Selection & Structure
Component Selection & Structure
Compressor Pressure Ratio Boundaries at -60℃: Dividing Criteria Between Scroll and Semi-Hermetic Reciprocating
Starting from pressure ratio, discharge temperature, motor cooling and part-load behaviour, this page gives the dividing criteria between scroll and semi-hermetic reciprocating compressors for -60℃ auto-cascade units, together with an acceptance criterion for each step, for item-by-item checking during selection.
低温工况的油路：油分离、回油与油稀释的控制边界
拆解低温工况下冷冻油在系统中的迁移路径，给出油分离器效率、回气流速与油稀释度的控制边界，以及缺油、积油与起泡三类油故障的判据。
回热器与分凝器：换热面积、流阻与分离效率的取舍
拆解回热器与分凝器在自复叠循环中的不同任务，给出换热面积、流阻与分离效率三者的取舍判据，以及内部夹点与油污裕度的校核方法。
低噪声低振动：源识别、隔振与管路应力控制
把噪声与振动拆成空气声与结构声两条路径处理，给出源识别方法、隔振频率比判据与管路支架补偿要求，以及验收测量与长期监测的判据。