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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 418 for “"heat exchanger"”.
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Synergistic diffuser/heat-exchanger design
… numerical evaluation of synergistic diffusing heat-exchanger design is presented. Motivation for this development is based on current diffuser and heat-exchange technologies in cogeneration plants, which require a large geometric footprint to generate steam using gas-turbine exhaust. A compact …
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Automated retrofit of heat exchanger networks
… plant, a significant amount of process heat is generated using fossil fuels, contributing to New Zealand’s overall greenhouse gas emissions. While New Zealand’s renewable energy sources present potential alternatives to fossil fuels, reducing the process heat demand of industrial …
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Spiral tube heat exchanger for liquid metal
The development of a heat transfer conversion system utilizing liquid metals has been the object of the investigations with which I have been associated on my present duty with the General Electric Company, Schenectady, New York. The major problems involved have been the design of the components of …
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Design of Shell and Tube Heat Exchanger
… a lot of factors affect the performance of the heat exchanger and the optimization obtained by the formulas depicts the cumulative effect of all the factors over the performance of the heat exchanger. It is observed that by changing the value of one variable then by keeping the rest variable as …
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PLATE HEAT EXCHANGER IMPROVEMENTS WITH SHAPE OPTIMIZATION
Plate Heat Exchangers (PHXs) are used in a wide variety of applications including, but not limited to Heating, Ventilation, Air-Conditioning, and Refrigeration (HVAC&R). PHXs are favored by the HVAC&R industry due to their compactness, flexible sizing, close approach temperature, and good heat …
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Hydrodynamic characteristics of a plate heat exchanger
… a commercially-available three-dimensional plate heat exchanger.
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Analytical Investigations in Heat Exchanger Network Synthesis
Although exact algorithms have been successful in tackling HENS problems of small size, heuristics are required for large-scale problems, and nothing is known about the quality of the solutions provided by heuristics. Analytical investigations are suggested to characterize the behavior of both …
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On the operability of heat exchanger networks
… report presents a study of the operability of heat exchanger networks (HENs).The integration of heat exchange systems such as HENs typically results in significant steady-state cost savings which is the motivation for their implementation. However, such integration may lead to problems in the …
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Transient boiler heat exchanger thermal behaviour analysis
… creep- fatigue aging. The boiler and its final heat exchangers and headers are the main components that are affected by these mechanisms. The aging of these components results in high maintenance costs, reduction of the plant reliability and availability, and contribute to increased safety risks …
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Benchmarking of a sCO2 Heat Exchanger Flow Loop
<p>Heat transfer of supercritical carbon dioxide (sCO2) was studied experimentally by commissioning a sCO2 flow loop featuring a horizontal tube-in-tube counterflow heat exchanger with a circular cross section. The main objective was to establish experimental heat transfer research capabilities for …
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Numerical modelling of geothermal borehole heat exchanger systems
… efficiency in buildings, in particular their heating, ventilation, and air conditioning (HVAC) systems, a policy objective for reducing energy consumption and CO2 emissions nationally and internationally. Ground source heat pump (GSHP) systems, due to their high coefficient of performance …
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Heat transfer analysis of a heat exchanger plate
Thesis (M.S.)--Michigan State University of Agriculture and Applied Science. Dept. of Agricultural Engineering, 1962
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Velocity distributions in a plate heat exchanger channel
… the velocity distribution in a commercial plate heat exchanger is described. Detailed velocity profiles are presented and a preliminary investigation is reported on flow behaviour through a single cell in the channel matrix. The objective of the study was to extend previous investigations of …
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Tomato Juice Film Deposition on Heat Exchanger Coils
Made available in DSpace on 2014-12-05T19:06:35Z (GMT). No. of bitstreams: 1 0010439.pdf: 5267736 bytes, checksum: 64cdf2602276ba91190bb2a6760ca940 (MD5) Previous issue date: 1954
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Effect of latent load on heat exchanger design
… increasingly more significant [14], [16]. Heat exchangers are a fundamental component of thermal systems. These systems often operate in high humidity environments where latent loads can significantly reduce performance due to condensate accumulation on fin surfaces. The current …
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Optimisation of heat exchanger network maintenance scheduling problems
… the challenges that arise from the scheduling of heat exchanger network maintenance problems which undergo fouling and run continuously over time. The original contributions of the current research consist of the development of novel optimisation methodologies for the scheduling of cleaning …
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Automated ultrasonic inspection of heat exchanger tubesheets welds
… the integrity of the welds in a specific heat exchanger presently used in industry. The First Effect Steam Chest is a shell and tube, one pass type of heat exchanger used in the production of chlorine. A caustic soda/salt mixture is pumped through the bottom channel head through the tubes …
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Advanced technologies for heat exchanger design and manufacturing
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1997.
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Software architecture for web-accessible heat exchanger experiment
… The software architecture for the MIT I-Lab Heat Exchanger experiment is designed keeping in mind all these needs and it has been modified at different times to make room for changing requirements both in part of students performing the experiment (through student assessment of the …
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