Unit.py

# Python import


# User Import
# -----------------------------------------------------------
# Job             : Unit Conversion
#         
# Editor        : aymhenry@gmail.com
# -
class Unit:
    # Factor used to change other unit.
    # Example DIST_Unit1_Unit2, factor to change from unit1 to unuit 2 : unit1 = DIST_Unit1_Unit2 * Unit2
    # DIST : Distance
    # TEMP : Temperature  F1(T) = (T - 32.0)/1.8                 !F to C
    # ENRG : Energy
    # COND : Conductivity (BTU/HR-FT-F)
    
    DIST_INCH_CM = 2.54
    DIST_INCH_MM = 25.4
    DIST_FEET_INCH = 12
    
    TEMP_F_COF1 = 32.0
    TEMP_F_COF2 = 1.8
    
    # 1 watt = 3.41442595 Btu (th)/hour
    POWR_W_BTUH = 3.41442595    # 3.413
    
    VOLU_FT_LITER = 28.317 
    
    # 1 watt/m K = 0.048174 Btu(th) /hr.inch Deg-F
    COND_WattM_BtuThHrInchF = 0.048174 
    
    # 1 cm watt/square meter/K = 0.06938111789 Btu (th) inch/hour/square foot/DEG_F
    COND_WATTCM_BTU_INCH = 0.069380
    
    # 1 Btu (th) foot/hour/square foot/DEG_F = 1.729577206 watt/meter/K    Conductivity
    # 1 watt/meter/K = 1/1.729577206 Btu (th) foot/hour/square foot/DEG_F
    COND_WATTM_BTU_FOOT = 1/1.729577206    # 1/1.7307

    # -----------------------------------------------
    @staticmethod    
    def WattM_BtuThHInchF(Watt):
        return Watt * Unit.COND_WattM_BtuThHrInchF

    @staticmethod    
    def BtuThHInchF_WattM(BtuH):
        return BtuH / Unit.COND_WattM_BtuThHrInchF    
    
    # -----------------------------------------------
    @staticmethod    
    def Watt_BtuH(Watt):
        return Watt * Unit.POWR_W_BTUH

    @staticmethod    
    def BtuH_Watt(BtuH):
        return BtuH / Unit.POWR_W_BTUH    
    
    # -----------------------------------------------
    @staticmethod    
    def f_c(temp_F):
        return (temp_F - Unit.TEMP_F_COF1) / Unit.TEMP_F_COF2

    @staticmethod    
    def c_f(temp_C):
        return Unit.TEMP_F_COF2 * temp_C + Unit.TEMP_F_COF1    
    # -----------------------------------------------

    @staticmethod
    def ft3_liter(ft3):
        return ft3 * Unit.VOLU_FT_LITER
    
    @staticmethod    
    def liter_ft3(liter):
        return liter / Unit.VOLU_FT_LITER
    # -----------------------------------------------
    
    # .......Distrance
    @staticmethod
    def feet_mm(dist_feet):
        return dist_feet * Unit.DIST_INCH_MM * Unit.DIST_FEET_INCH
        
    @staticmethod
    def mm_feet(dist_mm):
        return dist_mm / Unit.DIST_INCH_MM / Unit.DIST_FEET_INCH

    # -----------------------------------------------    
    @staticmethod
    def inch_mm(dist_inch):
        return dist_inch * Unit.DIST_INCH_MM
        
    @staticmethod
    def mm_inch(dist_mm):
        return dist_mm / Unit.DIST_INCH_MM

    # -----------------------------------------------
    @staticmethod
    def inch_feet(dist_inch):
        return dist_inch / Unit.DIST_FEET_INCH
        
    @staticmethod
    def feet_inch(dist_feet):
        return dist_feet * Unit.DIST_FEET_INCH

    # -----------------------------------------------
    @staticmethod
    def inch_cm(dist_inch):
        return dist_inch * Unit.DIST_INCH_CM
        
    @staticmethod
    def cm_inch(dist_cm):
        return dist_cm / Unit.DIST_INCH_CM
    # -----------------------------------------------

    @staticmethod
    def cm_feet(dist_cm):
        return dist_cm / Unit.DIST_INCH_CM / Unit.DIST_FEET_INCH

    @staticmethod
    def feet_cm(dist_feet):
        return dist_feet * Unit.DIST_INCH_CM * Unit.DIST_FEET_INCH
    
    # .......Cond
    # 1 watt/meter/K = 6.938111789 Btu(th) inch/hour/square foot/DEG_F
    # 1 cm watt/square meter/K = 0.06938111789 Btu(th) inch/hour/square foot/DEG_F
    
    # -----------------------------------------------
    @staticmethod    
    def CmWattM2K_BtuInchHrF2F(cond_watt):
        # input : cm watt/square meter/K or(CM.W/m2-DEG_C)
        # output: Btu(th) inch/hour/square foot/DEG_F or(BTU-INCH/HR-FT2-DEG F)

        return cond_watt * Unit.COND_WATTCM_BTU_INCH
        
    @staticmethod
    def BtuInchHrF2F_CmWattM2K(cond_btu):
        # input : Btu(th) inch/hour/square foot/DEG_F or(BTU-INCH/HR-FT2-DEG F)
        # output: cm watt/square meter/K or or(CM.W/m2-DEG_C) or or(CM.W/m2-K)

        return cond_btu / Unit.COND_WATTCM_BTU_INCH
    # -----------------------------------------------
    
    @staticmethod
    def CmWattM2K_BtuHrFtF(cond_watt):
        # input : cm watt/square meter/K or(CM.W/m2-DEG_C) CmWattF2K
        # output:(BTU/HR-FT-DEG F)   BtuHrFtF
        
        # Btu(th) inch/hour/square foot/DEG_F /12 = Btu(th) /hour/ foot/DEG_F/12 or
        # conductivity to resistivity example:  resistivity = 1/ watt_btuInch(cond_watt)
        #                     resistivity unit = hr foot DEG_F/ Btu(th).
        # Unit.COND_WATTCM_BTU_INCH / Unit.DIST_FEET_INCH  =  0.069380 / 12

        return cond_watt * Unit.COND_WATTCM_BTU_INCH / Unit.DIST_FEET_INCH 

    @staticmethod
    def BtuHrFtF_CmWattM2K(cond_btu):
        # input: Btu(th) inch/hour/square foot/DEG_F /12 = Btu(th) /hour/ foot/DEG_F/12 or(BTU/HR-FT-DEG F)/12
        # output : cm watt/square meter/K or(CM.W/m2-DEG_C)
        #
        # Unit.DIST_FEET_INCH / Unit.COND_WATTCM_BTU_INCH  = 12/0.069380

        return cond_btu * Unit.DIST_FEET_INCH / Unit.COND_WATTCM_BTU_INCH 
    # -----------------------------------------------

    @staticmethod
    def WattMK_BtuHrFtF(cond_watt):
        # input : watt/meter/K or(W/m-DEG_C) WattMK
        # output: Btu(th) /hour/foot/DEG_F or(BTU/HR-FT-DEG F) BtuHrFtF
        return cond_watt * Unit.COND_WATTM_BTU_FOOT
    
    @staticmethod
    def BtuHrFtF_WattMK(cond_btu):
        # input: Btu(th) /hour/foot/DEG_F or(BTU/HR-FT-DEG F)
        # output : watt/meter/K or(W/m-DEG_C)

        return cond_btu / Unit.COND_WATTM_BTU_FOOT
    # -----------------------------------------------

    @staticmethod
    def WattMK_BtuHrInchF(cond_watt):
        # input : watt/meter/K or(W/m-DEG_C) WattMK
        # output: Btu(th) /hour/foot/DEG_F or(BTU/HR-IN-DEG F) BtuHrInchF
        # Unit.COND_WATTM_BTU_FOOT/Unit.DIST_FEET_INCH = 0.04818133185627408

        return cond_watt * Unit.COND_WATTM_BTU_FOOT/Unit.DIST_FEET_INCH

    @staticmethod
    def BtuHrInchF_WattMK(cond_btu):
        # input: Btu(th) /hour/foot/DEG_F or(BTU/HR-IN-DEG F)
        # output : watt/meter/K or(W/m-DEG_C)
        # Unit.DIST_FEET_INCH  / Unit.COND_WATTM_BTU_FOOT = 20.75492

        return cond_btu * Unit.DIST_FEET_INCH / Unit.COND_WATTM_BTU_FOOT
    # -----------------------------------------------