6 research outputs found
Energy intensity and environmental impact metrics of the back-end separation of ethylene plant by thermodynamic analysis
Application of an optimum design of cooling water system by regeneration concept and Pinch Technology for water and energy conservation
In this study, using a combination of Pinch Technology and Mathematical Programming, a new technique is presented in order to grass-root design for a cooling water system to achieve minimum total annual cost. The presented technique is further improved by using patterns from the concept of regeneration recycling in water systems: in a sense that cooling water is regenerated locally by an air cooler. Moreover, in the proposed method, optimum design of cooling tower has been achieved through a mathematical model. Related coding in MATLAB version 7.3 was used for the illustrative example to get optimal values in the proposed cooling water design method computations. The result of the recently introduced design methodology was compared with the conventional and Kim and Smith design methods. The outcomes indicate that by using this new design method, more water and energy can be saved and a lower level of total annual cost can be reached. © 2009 Asian Network for Scientific Information
Comparison of Stochastic Methods with Respect to Performance and Reliability of Low Temp Gas Separation Processes
New Method for Designing an Optimum Distributed Cooling System for Effluent Thermal Treatment
Temperature restrictions on aqueous effluents dictate that streams with
a temperature higher than the permitted level needed to pass through
cooling systems to reduce the effluent temperature before discharge. In
this study, by considering the grouping design rules based on pinch
technology, an optimum design for a distributed effluent cooling
system, has been developed. A counter-flow wet cooling tower, with a
mechanical air draft, is also assumed as an effluent thermal treatment
facility in predicting the exit water and air conditions of the tower
in the system. In this new design method, an optimum inlet flow rate to
cooling tower has been achieved by exploring the feasible region. Also,
the evaporation loss effect, flexible design variables, and physical
properties have been incorporated in targeting the optimal conditions
for the cooling tower. A case study is presented to illustrate the
design methodology and the optimization model of cooling systems
Multiobjective optimization of cold-end separation process in an ethylene plant
10.1021/ie4027764Industrial and Engineering Chemistry Research524817229-17240IECR