Homework answers / question archive / ESP4401 Optimization of Energy Systems  Energy consumption breakdown of an industrial plant is given below: Measured data for existing chiller systems: Measured data for existing boiler systems: Other data: · Electric power demand for others (Example: Compressed air systems, Exhaust fans, Industrial processes, Office equipment, Lighting etc

ESP4401 Optimization of Energy Systems  Energy consumption breakdown of an industrial plant is given below: Measured data for existing chiller systems: Measured data for existing boiler systems: Other data: · Electric power demand for others (Example: Compressed air systems, Exhaust fans, Industrial processes, Office equipment, Lighting etc

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ESP4401 Optimization of Energy Systems 

Energy consumption breakdown of an industrial plant is given below:
Measured data for existing chiller systems:
Measured data for existing boiler systems:
Other data:
· Electric power demand for others (Example: Compressed air systems,
Exhaust fans, Industrial processes, Office equipment, Lighting etc.) = 3000
kW (Excluding chiller systems)
· Tariff of natural gas = 1.9 S$/kg
· Peak time (7am to 11pm) electricity tariff = 0.28 $/kWh
· Off Peak time (11pam to 7am) electricity tariff = 0.18 $/kWh
· Electricity demand charge = 8 $/kW per month
· Plant operating hour = 8760 hrs/year
· You need to propose CHP systems for potential energy and cost savings
· Type of CHP plant: Natural gas fired reciprocating engine
· Assume, net electricity generation efficiency of CHP plant = 41.1%
· Assume, air-to-fuel ratio for the gas engine = 31:1
· You need to propose new absorption chiller to utilize the available excess
heat energy of the exhaust gas, if any. Assume proposed absorption chiller
COP = 0.9
· Implementation cost for CHP plant = $2000/kW capacity
· Implementation cost for absorption chiller system = $1800/RT capacity
· Make necessary realistic assumptions, if any
You need to prepare three Excel spread sheets showing energy saving, cost
saving and payback period for:
a) Option-1: CHP plant that matches electricity demand of the industry.
b) Option-2: CHP plant that matches heat energy demand of the industry.
c) Option-3: Another practically feasible CHP sizing option that you would like to
propose.
d) Analyse advantages and disadvantages of Option-1, 2 and 3. Any innovative
features of your proposed system(s)? As an Energy Engineer, which of the
above options you will recommend? Justify your selection.
Note:
1) Two members in each group
2) Example of File Name: Assignment_Group members’ name
3) Excel spread sheets should be properly formatted: (a) Easy to follow the
calculation, (b) Proper sequencing of calculation steps, (c) Write unit of
each calculated parameters / variables.