Simulation of 200 ton chiller and response to heat loads in naval applications
Markuson, Luke Richard
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Permalink
https://hdl.handle.net/2142/127511
Description
Title
Simulation of 200 ton chiller and response to heat loads in naval applications
Author(s)
Markuson, Luke Richard
Issue Date
2024-12-11
Director of Research (if dissertation) or Advisor (if thesis)
Miljkovic, Nenad
Department of Study
Mechanical Sci & Engineering
Discipline
Mechanical Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
System-level
Modeling
Heat
Heat Transfer
200 Ton
Chiller
Simscape
Matlab
Thermal
Level
Naval
Navy
System
Thermal Management
Duty Cycle
Language
eng
Abstract
The advancement of electrification in naval vessels has caused the requirements of electrical capacity and transmittance to sharply increase. The addition of new electronic devices has required the cooling capacity of new vessels to increase. As liquid chillers and its subsequent piping infrastructure are large, heavy, and expensive, it is a priority for naval designers to optimize this machinery. System level modeling allows for the designer to determine what heat loads each chiller will be responsible for. For complex cooling loops with multiple independent heat loads, the amount of machinery that is required to be cooled at any one time is incredibly variable. With a notional four-zone cooling system for a naval vessel, it is possible to split up the thermal loads of a ship into separate manageable loops. This allows for effective thermal management of all necessary equipment. Analysis shows that the York 200 ton chiller, a common chiller in marine applications, effectively meets the expectations of slow-changing thermal loads. However, it cannot rapidly increase cooling power for high powered pulse loads through normal operation. A time delay of approximately 100 seconds occurs between the time of maximum heat load and maximum condenser heat transfer rate. Combined chiller and heat load simulation has lots of opportunities to enhance the efficiency of naval vessels in the future.
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