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Title: Design and integration of refrigeration and power systems
Author: Zheng, Xuesong
Awarding Body: University of Manchester
Current Institution: University of Manchester
Date of Award: 2009
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In low temperature processes, such as natural gas liquefaction, refrigeration and power systems are highly interacted with each other through mechanical power consumption and supply. Shaft power consumption of a refrigeration process has a significant impact on equipment selection for a power system. Such influences are eventually passed on and dramatically affect the overall fuel consumption of the power system, which represents a large proportion of operation cost in low temperature processes. This research has been devoted to exploit the interactions between refrigeration and power systems, and develop systematic design methodologies for both refrigeration and power systems. For refrigeration system synthesis, novel refrigeration processes have been proposed to balance the performance between shaft power consumption and process structural complexity. For each refrigeration process, a generic algorithm has been applied to identify the best operating conditions. Although the global optimality can not be guaranteed due to the highly non-linear nature of this problem, greater confidence in solution optimality can be achieved with the adoption of a stochastic optimisation method. With new design variables introduced in these novel refrigeration processes, more flexible condition selection for refrigeration evaporation can be achieved. Thus, more opportunities for cycle efficiency improvement can be exploited.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available