Dairy plant - optimal utility systems

What is this?

A multidimensional explorer of optimisation results for different types of dairy plants USDA.

Data inputs (a) nat. gas price ($/kWh)
(b) electricity price ($/kWh)
(c) CO2 taxes ($/t)
(d) annuity factor (-) tau = 0.08, maintenance [0.03,0.07]
(e) operating time (h)
(f) el. grid CO2 eq emissions (kg CO2 / kWh)
(g) CO2 nat. gas (kg/kWh)

Data outputs (h) total annualised costs (% reference)
(i) total CO2 emissions (% reference)
(j) net electricity (% reference)
(k) net nat. gas (% reference)
(l) capital expenses (% of tac)
(m) payback time (y)
(n) exergy efficiency (%)
(o) cooling water consumption (% ref)
(p) electricity refrigeration cycle (% ref)
(q) minimum approach temperature difference (K)
(r) electricity prod. by co-geneneration engine (kW)
(s) electricity cons. by mechanical vapor recompression (kW)
(t) electricity cons. by heat pump (kW)
(u) heat pump stages (#)
(v) fluid [1-NH3, 2-H2S,3-R290,4-R1270,5-R161,6-R407C,7-R404A,8-R410A,9-R507A,10-R41,11-cascade of fluids]
(w) sucooling heat load (kW)
(x) gas-cooling heat load (kW)
(y) investment discount (% investment)
(z) exergy discount (k$/%)