Patent ID: 9146547
Filing Date: 2015-09-29
Classification: G05B

Abstract:
1. A computer implemented method to improve energy efficiency of a farm with livestock wastes with a microgrid, comprising: generating a comprehensive cooling, heating, and power (CCHP) microgrid model with biogas produced from livestock waste; performing on a computer a multi-objective optimization to improve system efficiency of energy utilization and reduce environmental problems caused by animal wastes; displaying results of the multi-objective optimization for review; and modeling a thermal storage tank for cooling as: where Q t out is the heat release in kWh, Q t in is the heat storage in kWh, C is the specific heat coefficient of storage medium in kWh/kg-K, ρ is the density of storage medium in kg/m 3 , V is the capacity of storage tank in m 3 , T is the average temperature in the tank in K, Δt is the hourly time duration, ε is the coefficient of waste heat from storage tank, and ΔT is the temperature range in the tank: wherein produced biogas used to fire a gas boiler for the heating and can be used for firing an absorption chiller for the cooling; wherein the above steps are carried out by a computer having a processor and memory.