Sample calculation

 

Load = 0

 

Evaporator

 

Q_4-1 = m_r (h1- h₄)

  m_r = 0.07441,                         h₁= 317.4,       h₄ = 132.6

Q_{4-1 =} 0.07441(317.4 – 132.6)

        = 13.7

 

Condenser

 

Q_2-3 = m_r (h₂- h₃)

    m_r = 0.07441,                       h₂ = 334.8,      h₃ = 132.6

Q_2-3 = 0.07441 (334.8 – 132.6)

       = 15.05  

 

Compressor

 

W_1-2 = P =    m_r (h₁- h₂₎            

         m_r = 0.07441,                  h₁= 317.4,    h₃ = 132.6      

W_1-2 = P =  0.07441(317.4- 132.6)        

              = 1.29             

 

COP_ref  =  

            =   317.4-132.6

                  334.8-317.4   

            =    10.62