CHP eQuest absorption-chiller
Has anyone successfully modeled CHP in eQuest? We have this industrial facility with absorption chiller and a gas turbine generator to produce energy and use it in process end uses, in order to take advantage of the fuel rate and being able to claim savings (since process represents almost 90% of total energy cost). But I'm having a hard time assigning the meters, 1.- How many meters should i have? 2.- cogeneration track mode should be track electric, thermal or maximum? 3.- in the electric generator tab, what meters should i assign? I've made trials with up to 5 meters (original electric and fuel, plus additional electric and fuel for the electric generator, +1 additional surplus meter for electricity "not used" and sold back to the grid, but the result changes dramatically depending on meter assignment. (been wrestling with all possible combinations) The gas turbine generator has a capacity of 1505 kw with a HIR of 2.5 Best case scenario, according to PS-C the generator runs at 90%/full capacity for almost 70% of time offsetting 60% of energy cost. (sounds logic) and meter assigments for this case is as follows: Building end-uses: EM1 (Track electric load), FM1 (natural gas) Electric Generator: Fuel meter=FM1, Electric meter=EM1 (track electric load), Surplus Meter=EM3 However, if I change meter assignments, worst case scenario, the CHP produces energy just to offset the absorption chiller consumption (chiller consumption dramatically increases) and somehow even though we decrease electricity energy cost, the fuel energy cost skyrockets and total energy cost remains balanced (actually proposed designs costs 5% more to operate, meaning no savings and meaning no EAp2. (this scenario according to PS-C the generator runs at 40-50% capacity the whole year, producing an overcost). Meter assigments for this case is as follows: Building end-uses: EM1 (Track electric load), FM1 (natural gas)
