架构调整

brayton_cycle/properties.py

@@ -0,0 +1,65 @@
+# -*- coding: utf-8 -*-
+"""REFPROP-backed CO2 property helpers."""
+
+import ctREFPROP.ctREFPROP as ct
+
+
+class CO2PropertyCalculator():              
+    """二氧化碳物性计算"""
+    def __init__(self, refprop_path = None):
+        """初始化库"""
+        self.rp = ct.REFPROPFunctionLibrary(refprop_path)
+        # 设置流体文件
+        self.rp.SETUPdll(1, 'CO2.FLD', 'HMX.BNC', 'DEF')
+        # 设置单位
+        self.rp.SETUPdll(2, 'SI', 'SI', 'DEF')
+        self.z = [1.0]
+        self.mw = self.rp.WMOLdll(self.z)
+    def calculate_properties(self, T=None, P=None, h=None, s=None):
+        """计算二氧化碳物性"""
+        if T is not None and P is not None:
+            # 已知Tp
+            result = self.rp.TPFLSHdll(T, P, self.z)
+            properties = {
+                'T': T,             
+                'P': P,             
+                'h': result.h,      
+                's': result.s,      
+                }
+        elif P is not None and h is not None:
+            # 已知Ph
+            result = self.rp.PHFLSHdll(P, h, self.z)
+            properties = {
+                'T': result.T,     
+                'P': P,             
+                'h': h,      
+                's': result.s,      
+                }
+        elif T is not None and h is not None:
+            # 已知Th
+            result = self.rp.THFLSHdll(T, h, self.z)
+            properties = {
+                'T': T,     
+                'P': result.P,             
+                'h': h,      
+                's': result.s,      
+                }
+        elif P is not None and s is not None:
+            # 已知Ps
+            result = self.rp.PSFLSHdll(P, s, self.z)
+            properties = {
+                'T': result.T,     
+                'P': P,             
+                'h': result.h,      
+                's': s,      
+                }
+        else:
+            raise ValueError("提供的参数不足")
+        if result.ierr > 0:
+            raise ValueError(f"REFPROP计算错误:{result.ierr}")
+        
+        # 补充提取的物性，这里由于后续还要使用，不进行参数变换
+        properties['D'] = result.D
+        properties['cp'] = result.Cp   
+        properties['cv'] = result.Cv,     
+        return properties