ENHANCED COMPACT, AND ULTRA-COMPACT HEAT EXCHANGERS: FROM MICROSCALE PHENOMENA TO INDUSTRIAL APPLIC

Venue: Heredia

Location: Heredia, Costa Rica

Event Date/Time: Sep 13, 2009 End Date/Time: Sep 18, 2009
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Description

Conference Theme
The conference focuses on promoting the engineering development and application of enhanced, compact, and ultra-compact heat exchanger technology, on the basis of a clear understanding of the underlying mesoscale and microscale physics of heat transfer and fluid flow phenomena. Thus, the conference theme spans a wide spectrum of topics from the investigation of microscale science to industrial applications of this important class of heat exchange equipment which can provide cost effective solutions to complex contemporary heat transfer challenges in a way that serves the energy and sustainability needs of society.

Conference Objectives

To provide a forum for discussion of novel applications of enhanced, compact, and ultra-compact heat exchangers for automotive, process (e.g., refining, chemical), electronics cooling, fuel cells, power conversion, air-conditioning and refrigeration, aerospace, and other industrial applications.
To provide a forum for dissemination of the latest advances in microscale heat transfer leading to better understanding and modeling of enhanced and compact heat exchangers
To identify present applications of advanced heat exchanger technology in traditional and emerging industrial applications, evaluating the benefits and drawbacks; and to identify further areas where such advanced technology could be used.
To identify barriers, both real and perceived, to wider applications of advanced heat exchanger technology, and to identify areas where further research is needed.
To identify actions which can be taken by the various parties and disciplines to overcome these barriers and to provide communication channels between academic and industrial segments of the technical community.

Background
There is renewed interest in application of high performance Compact Heat Exchangers (CHE) due to high energy costs, concern for environmental protection, and social impetus for sustainable development. On the other hand, emerging technologies, such as fuel cells, microturbines, etc. have spurred significant interest in better understanding microscale phenomena and their application to develop newer types of CHEs for cost, space and energy savings. In general, CHEs with gas flows are characterized by high heat transfer area per unit volume (above 700 m2/m3; hydraulic diameter Dh £ 6 mm) and per unit mass, usually achieved by construction techniques that result in a large number of small channels. Channel sizes are now advancing to mini and microchannels, with significant improvement in heat transfer surface area density (meso heat exchangers ³ 3000 m2/m3 and Dh £ 1 mm; micro heat exchangers ³ 15,000 m2/m3 and Dh £ 100 m m). Liquid-phase change heat exchangers are considered compact for having heat transfer surface area density greater than 400 m2/m3. The resistance to application of these technologies is based on concerns about fouling and cleanability, ruggedness, safety (especially in high temperature and pressure applications), and cost. However, continuing advances at both fundamental and equipment-development levels and a growing database of successful plant experiences have demonstrated that significant capital and operating cost savings can be achieved by the reasoned applications of CHEs, microscale and enhanced heat exchangers.

This is the seventh conference in the series: the previous ones were held in Snowbird, Utah; Banff, Canada; Davos, Switzerland; Crete, Greece; Whistler, Canada; and Potsdam, Germany. They were sponsored by Engineering Conferences International. Each of these conferences was attended by 70 to 90 specialists with 30 to 50% of the participants from industry. The conference programs included invited lectures, tutorial lectures/short course, panel discussions, and contributed technical papers. These conferences were highly successful and unique, bringing together an effective mix of technical specialists from industry, universities and government organizations worldwide for technically focused discussions.

Building on the highly successful earlier conferences, this conference will continue to focus on compact heat exchangers, with an expanded scope to include mesoscale and microscale heat exchangers with applications in automotive, process (e.g., refining, chemical), electronics cooling, fuel cells, power, air-conditioning and refrigeration, aerospace, and other industrial applications. Some of these areas demand further miniaturization of current compact heat exchangers. Most require significant reductions in cost. The organizers of this Conference intend to bring together a select group of users (present and potential), manufacturers, designers, contractors, consultants and researchers to share their knowledge, experience, and ideas to support the theme of the conference.

Scope of the Conference

To disseminate and discuss basic and applied research, engineering and technology developments in compact and ultra-compact heat exchangers for conventional and emerging technologies. These CHEs could also include various types of enhanced heat transfer (EHT) concepts and devices that result in significant reduction of heat exchanger size compared to traditional technology. The scope of the conference will include fundamental research, thermal and mechanical design and development, manufacturing technology, and field experience. Papers are solicited for a variety of CHEs describing advanced technology, basic phenomena at traditional and microscale, single-phase and phase change heat transfer, analysis and numerical modeling, flow and temperature visualization, experimental and computational methods, heat transfer enhancement in single-phase and multiphase flows, design methods and operating problems, and mechanical design aspects. Papers dealing with case studies and applications are also encouraged in areas such as electronics cooling, automotive, air-conditioning and refrigeration, aerospace, process integration. .
The uncertainty arising from fouling is a major barrier/concern for wider use of CHEs in industrial applications. Papers are solicited on fouling characteristics, mitigation methods and design approaches with fouling to clearly show the advances made in the recent past for potential applications of CHEs.
Cost has become an extremely important consideration for CHEs. Many innovative and simplified methods of manufacturing have emerged in the last decade. Papers are invited to present the latest advances in manufacturing technology developments and associated intricacies.
Alternative materials for construction, such as polymers, ceramics, composites, and carbonaceous and metallic foams have emerged as promising for CHEs. Papers are invited to present advances in the use of such materials, to explore their potential or report their application.
There are many barriers and concerns related to durability, reliability and safety in the use of CHEs in industrial applications. Papers are solicited dealing with these topics–including case studies–directed at surmounting these barriers.
Papers in related areas other than those listed above are also welcome.
Tentative Technical Sessions

Single-Phase

Recent Developments in Heat Exchanger Fundamental Studies
Single-Phase Heat Transfer Enhancement – Shell-and-Tube, Plate-Fin, Tube-Fin, Primary Surface and Other Advanced Heat Exchangers
Measurement Techniques for Heat Exchangers
Heat Exchanger Design Data
Micro Heat Exchanger Studies and Applications
Fouling Studies, Remedial/Minimization Techniques and design approaches
High Temperature Heat Exchangers
Single-Phase Heat Exchanger Development and Applications
Industrial Approach to Cost Effective HX Designs for Low Volume Production, and High Durability and Reliability.
Phase-Change: Condensation, Boiling and Vaporization

Condensation Fundamental Studies
Enhancement Studies in Condensation
Condensation Heat Exchanger Applications
Boiling and Vaporization Fundamental Studies
Boiling and Vaporization Heat Exchanger Developments
Boiling and Vaporization Heat Exchanger Applications
Enhancement Studies in Boiling and vaporization
Measurements and Experimental Techniques
Boiling and Condensation in Microchannels
Fouling Studies, Remedial/Minimization Techniques and Design Approaches: Condensation, Boiling and vaporization
Industrial Approach to Cost Effective HX Designs for Low Volume Production, and High Durability and Reliability.

Conference Format
The conference will be held for 4-1/2 days. Sessions will be scheduled in the mornings, late afternoons, and/or evenings, with breaks in the formal program to allow small group interactions. There will be Keynote lectures, technical presentations, panel discussions and informal sessions. There may be a Poster session for personal interactions. There will be no parallel sessions. There will be an Open Forum session to include presentations that do not go into the conference proceedings. Attendance at the conference will be limited to about 80 to 100 participants to encourage maximum interaction among the participants. All participants will stay at the conference site. Conference registration fee will include complete room and board, coffee/tea breaks daily, conference proceedings and other related conference material. The format employed by Engineering Conferences International allows maximum interaction, discussion and networking among the conference participants.

Everyone participating in the conference will be expected to make contributions throughout the conference. These contributions may be oral or written, formal or informal, with the goal that every participant contributes positively to the discussions and the success of the conference.

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