Transportation modelling Tri-County Utilities, Inc., supplies natural gas to customers in a three-county area. The company purchases natural gas from two companies: Southern Gas and Northwest Gas. Demand forecasts for the coming winter season are Hamilton County, 400 units; Butler County, 200 units; and Clermont County, 300 units. Contracts to provide the following quantities have been written: Southern Gas, 500 units; and Northwest Gas, 400 units. Distribution costs for the counties vary, depending upon the location of the suppliers. The distribution costs per unit (in thousands of dollars) are as follows: From To Hamilton Butler Clermont Southern Gas 10 20 15 Northwest Gas 12 15 18 Develop a network representation of this problem. Develop a linear programming model that can be used to determine the plan that will minimize total distribution costs. Describe the distribution plan and show the total distribution cost. (First determine initial transportation cost then use LCM).
Transportation modelling
Tri-County Utilities, Inc., supplies natural gas to customers in a three-county area. The company purchases natural gas from two companies: Southern Gas and Northwest Gas. Demand
From |
To |
||
Hamilton |
Butler |
Clermont |
|
Southern Gas |
10 |
20 |
15 |
Northwest Gas |
12 |
15 |
18 |
- Develop a network representation of this problem.
- Develop a linear programming model that can be used to determine the plan that will minimize total distribution costs.
- Describe the distribution plan and show the total distribution cost. (First determine initial transportation cost then use LCM).
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- Recent residential and industrial growth in Butler County has the potential for increasing demand by as much as 100 units. Which supplier should Tri-County contract with to supply the additional capacity?
Amount Cost Southern - Hamilton fill in the blank 38 $fill in the blank 39 Southern - Butler fill in the blank 40 fill in the blank 41 Southern - Clermont fill in the blank 42 fill in the blank 43 Northwest - Hamilton fill in the blank 44 fill in the blank 45 Northwest - Butler fill in the blank 46 fill in the blank 47 Northwest - Clermont fill in the blank 48 fill in the blank 49 Total Cost $fill in the blank 50
From the new solution we see that Tri-County should contract with