Refrigerating systems investment cost

Compressed gas at 450 psig is dried and chilled. A double demetha-nizing stripping system (8,9) operating at medium pressure and reboiled by cracked gas minimizes the refrigeration required (heat integration) as well as the investment cost for separating methane (top) and C2+ cut (bottoms). A dual column concept—absorber (10) concept—is applied between the secondary demethanizer overheads and the chilled cracked... 

Low investment costs because there is no need of having a mechanical refrigerating system. 

Refrigerant costs are important when considering the investment in filling and maintaining a full charge in a particular system. 

High energy and economic efficiency due fo reduced investment, maintenance and power costs, high throughput, and cost efficiency. Environmenfal friendliness due fo fhe use of environmentally friendly secondary coolants (syrup-type solutions or ice slurries) and primary refrigerant in a small isolated system. The use of product-friendly refrigerant... 

The capital cost of the network is the summation of installed costs for all individual heat transfer equipment, including heat exchangers, furnaces, steam heaters, water coolers, and air cooler and refrigeration, and other related costs, including foundation, piping, instrumentation, control, and so on. Thus, it is a total investment ( ) required to build the entire heat transfer system. 

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