Day 6 - Geothermal Plant

Throttling Process 1-2: h2

h2 = h1 = hf + x2 hfg

Throttling Process 1-2: h3

h3 = hg2

Mass flow rate of steam and ground water

mgw = ms / x

Turbine Work

Wt = ms (h3 - h4)

Process 3-4: s4

s4 = s3 = sf + x3 sfg

Process 3-4: h4

h4 = hf + x4 hfg

Turbine Efficiency

e_t = BP / Wt

Heat Rejected in Condenser

Qr = ms (h4 - h5)

Generator Efficiency

e_gen = GO / BP

Condenser cooling water requirement

mw cp (t2 - t1) = ms (h4 - h5)

Overall Plant Efficiency

e_over = GO / mg h1

Number of Wells

#well = mgw / mass of discharge per well

Problem 16: Find mass flow rate of well water given Tsep, Psep, Pcon, e_turb, BP

mgw = ms / x

Problem 16: Find ms given Tsep, Psep, Pcon, e_turb, BP

Wt = ms (h3 - h4)

Problem 16: Find Wt given Tsep, Psep, Pcon, e_turb, BP

e_turb = BP / Wt

Problem 16: Find h3 given Tsep, Psep, Pcon, e_turb, BP

h3 = hg2

Problem 16: Find h4 given Tsep, Psep, Pcon, e_turb, BP

h4 = hf + x4 hfg

Problem 16: Find x4 given Tsep, Psep, Pcon, e_turb, BP

s4 = s3 = sf + x4 sfg

Problem 16: Find x2 given Tsep, Psep, Pcon, e_turb, BP

h_Tsep = hf_Psep + x2 hfg_Psep