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制冷压缩机选型计算器：功率、COP与排量
本工具可估算NH₃、CO₂跨临界、HFO混合制冷剂及丙烷系统的压缩机轴功率、COP与理论排气量，帮助您在询价前先了解设备量级。
Standard engineering assumptions
Estimates Only: This calculator is provided for general informational purposes only. Results are approximate and may contain errors, omissions, or outdated information. They do not constitute legal, financial, engineering, tax, technical, or professional advice. Users are solely responsible for independently verifying all calculations, specifications, prices, regulations, and requirements with qualified professionals before making any decisions. By using this calculator, you acknowledge that the website owners, operators, and affiliates accept no responsibility or liability for any loss, damage, or decisions resulting from its use.
压缩机选型以蒸发器制冷量（kW）和运行COP为起点：轴功率 ≈ 制冷量 ÷ COP。冷藏工况（约−5°C蒸发）典型COP为3.5–5.0，冷冻工况（约−35°C）为1.4–2.2。氨（NH₃）通常在大型制冷站效率最高，CO₂（R-744）适合低充注量和复叠制冷系统。
电机功率（kW）= 制冷量（kW）÷ COP ÷ 电机效率 · 排气量（m³/h）= 质量流量 × 吸气比容
经 ColdMatch 制冷工程师审核
- 1根据您的负荷计算结果，输入所需制冷量（kW）。
- 2选择制冷剂（NH₃、CO₂、R-448A/449A、丙烷）和蒸发温度。
- 3根据当地气候设定冷凝温度。
- 4对比轴功率、COP和排气量结果，然后按此参数索取匹配的压缩机机组方案。
What this calculator estimates — and what can change it
- Calculated heat load (kW)
- Target room temperature
- Ambient / external temperature
- Refrigeration technology (NH₃, CO₂, HFC/HFO)
- Redundancy / standby capacity
压缩机选型
- Refrigeration technology (NH₃, CO₂, HFC/HFO)
- Ambient / external temperature
- Redundancy / standby capacity
- Pull-down time
Limitations
This is a preliminary planning estimate based on the assumptions you entered, not a refrigeration-engineering design, a certified load calculation or a quotation. Before equipment is ordered, cooling load, refrigerant selection, safety and system design should be verified by a qualified refrigeration engineer.
Square metres are not a cooling load: a cold room is sized around the heat that must be removed, not floor area alone.
Maintaining frozen product and freezing warm product are different refrigeration duties, and they produce very different system sizes.
Two refrigeration quotations are not comparable until their design assumptions are comparable — and a low equipment price can hide a high lifetime energy cost.
Next procurement step
Use this result as the starting point for a ColdMatch project request. Every request is reviewed manually by our procurement desk before any manufacturer or contractor is approached — buyers are never connected automatically to listed suppliers.
Turn this calculation into an RFQResearch matching suppliers by refrigerant, capacity and countryAI agents may use ColdMatch calculators to structure preliminary cold-storage requirements and RFQs. Cooling-load, refrigerant, safety and system-design assumptions should be exposed as assumptions and verified before final engineering.
常见问题
制冷压缩机怎么选型？
根据蒸发温度（Te）、冷凝温度（Tc）、制冷剂特性与所需制冷量综合计算，得出轴功率与理论排气量。
不同工况下COP大致是多少？
冷藏工况（约−5°C蒸发）COP约为3.5–5.0，冷冻工况（约−35°C蒸发）约为1.4–2.2，具体因制冷剂和系统效率而异。
螺杆式还是活塞/涡旋式压缩机更合适？
轴功率低于约50 kW多采用活塞式或涡旋式；50–500 kW区间通常采用螺杆式；超过500 kW则多为螺杆式或离心式集中制冷站。
氨（NH₃）和CO₂制冷剂该如何选择？
氨（NH₃）在大型制冷站中通常效率最高，但对充注量和安全防护有更高要求；CO₂（R-744）更适合低充注量系统和复叠制冷方案，具体选择需结合场地法规和运维能力综合评估。
如何把压缩机选型结果转化为采购询价？
记录轴功率、COP与排气量结果，连同制冷剂类型、蒸发/冷凝温度一并整理为询价简介，提交ColdMatch。ColdMatch会先人工审核该简介，再决定是否引荐匹配的独立压缩机供应商，过程中不代表任何供应商作出报价承诺。
Unsure about a term? See the cold chain glossary (CAPEX, OPEX, blast freezing).
联系 ColdMatch 采购顾问
我们会将您的计算结果发送给 ColdMatch 采购专员，专员会先人工审核项目，再决定是否展开供应商匹配。无需承诺任何合作。
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