Design and Rate Air Cooled Heat Exchangers

Course Id:  EHX1021   |   Duration:  1.00 day(s)   |   CEUs Awarded:  0.7   |   Level:  Introductory


Course Objective

Learn the general design considerations of Air Cooled Exchangers. Examine process side, air side, fan selection and physical properties, and investigate thermal design principles, counter current exchangers and extended surfaces. Explore process-side events and responses, including single and two phase heat transfer, boiling, condensing and fouling.

Course Overview

  • Learn the general design considerations of Air Cooled Exchangers.
  • Examine process side, air side, fan selection and physical properties, and investigate thermal design principles, counter current exchangers and extended surfaces.
  • Explore process-side events and responses, including single and two phase heat transfer, boiling, condensing and fouling.

Benefits

  • Optimize the investment in Aspen Air Cooled Exchanger software for design and simulation of water coolers and condensers
  • Efficiently use Aspen Air Cooled Exchanger to evaluate:
  • Single-phase exchangers
  • Condensers
  • Air coolers of different configurations

Audience

  • Designers and operators of air cooled heat exchangers in process and power industries
  • Engineers involved in the specification of air-cooled heat exchangers for the full range of process applications including condensers, gas and liquid coolers
  • Anyone required to assess technical proposals for air cooled heat exchanger equipment
  • Engineers involved in the design, specification, or operation of process or power heat recovery equipment, including heat recovery steam generators will find the material appropriate.
  • New engineers wishing to gain experience in heat transfer and heat exchanger design
  • Existing Aspen ACOL™ and Aspen Aerotran™ users wishing to migrate to Aspen Air Cooled Exchanger

Approach

  • Instruction on basic heat transfer and heat exchanger design topics
  • Discussion about the general approach and the key elements for successful simulations
  • Use of Aspen Air Cooled Exchanger in design and simulation exercises covering typical examples in condensing
  • Application of Aspen Air Cooled Exchanger exercises for thermal design, rating, and simulation of tubular exchangers
  • Detailed course notes

Class Schedule

Class Agenda

EHX1021: Design and Rate Air Cooled Heat Exchangers

Introduction

  • Introductions and course contents
  • Workshop session descriptions
  • Course objectives

Thermal Design Overview
  • Discuss and review the scope of calculations performed by Aspen Air Cooled Exchanger
  • Recognize the calculation methodology behind Air Cooled Exchanger
  • Overall heat transfer coefficient
  • Log Mean Temperature Difference (LMTD)
  • LMTD correction factor
  • Crossflow calculation

Tubular Crossflow Exchangers
  • Discuss the characteristics and applicability of tubular crossflow exchangers – most notably air cooled heat exchangers
  • Air versus water cooling
  • Air cooled heat exchangers
  • Heat recovery devices
  • Air conditioning coils
  • Other types

Capabilities of Aspen Air Cooled Exchanger
  • Recognize the features and functional capability of the Aspen Air Cooled Exchanger application
  • Program design
  • Capabilities
  • Calculation modes
  • Properties
  • Features

Workshop Hands-On Aspen Air Cooled Exchanger Examples
  • Workshop 1: Check a Water Cooler – Determine if there is sufficient area available to cool a process fluid to the required temperature for a forced-draught air-cooled heat exchanger.
  • Workshop 2: Simulate a Condenser – Determine the tube side outlet temperature for a forced-draught air-cooled heat exchanger that is operating at a specified altitude.
  • Workshop 3: Simulate an A frame Condenser – Determine the tube side outlet temperature for an A frame condenser given process, geometry and physical properties data
  • Workshop 4: Simulate a Refrigeration Unit – Determine the airside outlet temperature for humid air flowing in a duct.
  • Workshop 5: Water Cooler Using a Fan Curve – Enter a fan curve to determine the operating condition of the exchanger. Vary the fan speed and find the new operating point for the exchanger.
  • Workshop 6: Design a Water Cooler – Design a single-phase heat exchanger using the Aspen Air Cooled Exchanger program for a range of outside stream exit temperatures, minimizing the capital operating costs.
  • Additional exercises (depending on time)

Demonstrations
  • Basic Aspen Air Cooled Exchanger operation
  • Linking to Aspen HYSYS simulator for exchanger design within the simulator environment
  • Basic Aspen Air Cooled Exchanger operation
  • Linking to Aspen HYSYS simulator for exchanger design within the simulator environment

Aspen Technology, Inc. awards Continuing Education Units (CEUs) for training classes conducted by our organization. One CEU is granted for every 10 hours of class participation.