Heat Exchange Institute (HEI) : Complete Set of Standards

Standards for Closed Feedwater Heaters : 8th Edition, 2009
 The eighth edition of these standards has been developed by the Closed Feedwater Heater Section of the Heat Exchange Institute, Inc. The technical information in these standards combines present industry standards, typical Purchaser requirements, and Manufacturer’s experience. In addition, the standards outline the important design criteria for closed feedwater heaters. These standards provide practical information on nomenclature, dimensions, testing, and performance. Use of the standards will ensure a minimum of misunderstanding between Manufacturer and Purchaser, and will assist in the proper selection of equipment best suited to the requirements of the application. Some of the new material incorporated into the eighth edition of these standards include new information on drains and vents for heaters. A new schematic piping arrangement for feedwater heaters has been added as well. Variables and values in Paragraph 3.14.3, Sample Problem for Determining Resultant Force and Moment, have been revised. A revised Fig. No. 11a & 11b, Standard Tolerances for Nozzle and Support Locations, has been included. Information on high pressure, full access channels has been added as Paragraph 8.1.2, accompanied by a new drawing.

In preparation of this standard, consideration has been given to the work of other organizations, such as the American Society of Mechanical Engineers, the American Society of Testing Materials, the former Feedwater Heater Manufacturers Association, the Tubular Exchanger Manufacturers Association, and others. Credit is hereby given to all those whose standards may have been helpful in this work.

Performance Standards for Liquid Ring Vacuum Pumps: 3rd Edition, 2005
 The Third Edition of the Performance Standard for Liquid Ring Vacuum Pumps presents industry standards and factory test methods. Definitions and nomenclature for liquid ring vacuum pumps are included along with design specifications, operating variables, correction factors, and figures that describe single and/or two-stage flat port plates, conical ports, and test set-ups for vacuum pump performance. Like all HEI standards, there is an appendix for conversion of English to SI units.

Standards and Typical Specifications for Tray Type Deaerators: 8th Edition, 2008
The Eighth Edition of Standards and Typical Specifications for Tray Type Deaerators contains practical information on the design, construction, and operation of tray type deaerators. It is intended to serve as a guide for individuals who design, specify, purchase, and use tray type deaerators. A useful troubleshooting guide is included as well as informative appendices to provide commonly used information such as head capacities, tank capacities, properties of saturated steam, friction and velocity charts, and pipe data. An important section deals with construction standards, code requirements, design and engineering of valves and nozzles, storage tank sizing, and accessory selection.

Standards for Direct Contact Barometric and Low Level Condensers: 8th Edition, 2010
Provides practical information on nomenclature, definitions, dimensions, construction, and testing of this equipment. A section on condenser performance includes topics on design, types of duty, loading, types of service, and air-vapor relationships. An engineering section deals with inlet and outlet sizing, piping, and pressure drop. The installation portion of the standard covers head and lift requirements, heights, auxiliary hardware arrangements, and relief valve sizing.

Standards for Steam Surface Condensers : 10th Edition, 2006
The Tenth Edition of the “Standards for Steam Surface Condensers” represents another step in the Heat Exchange Institute’s continuing program to provide Standards that reflect the latest technological advancement in the field of condensing equipment.
The Tenth Edition of “Standards for Steam Surface Condensers” has incorporated all information from the 9th Edition of Steam Surface Condensers as well as the Addendum to the 9th Edition. Also included in the 10th Edition is a new Table 3, which provides tube material and gauge correction factors. A sample thermal calculation has been added as Section 4.2.6. Table 6, entitled Materials for Condenser Tubes, has been updated and revised. Section 6.5.1.8 has been added to give users an example of sizing venting equipment as stated in Table 9. Section 7.0, Atmospheric Relief Devices, has been completely rewritten and updated. Information on clad tubesheets and condenser support systems has been incorporated into Section 8.0 of the standard. Section 9.0 has been expanded to include information on dimensional tolerances, shipping and site storage, field installation, erection superintendent duties, and post erection walk down. Appendix A has been completely revised from the previous edition. Appendix D has been updated, providing information on the procedure for calculating allowable nozzle external forces and moments in cylindrical vessels. Two new appendices, Appendix G and Appendix H, have been added to the 10th Edition. Appendix G is a troubleshooting guide that has been added to assist operators of steam surface condensers, and Appendix H is a newly developed HEI surface condenser data sheet.

Standards for Steam Jet Vacuum Systems: 6th Edition, 2007
 The Fifth Edition of Standards for Steam Jet Vacuum Systems builds on the Fourth Edition’s integration and update of three previous HEI documents: Standards for Jet Ejectors, Standards for Field Testing, and Construction Standards for Steam Jet Ejector Components. In addition to describing equipment types, the document covers nomenclature, operating principles, terminology and design specifications (including suction, discharge and utility conditions). The standard contains not only performance requirements, but also construction standards such as materials, welding, quality assurance, shipping, structural design, hydrostatic testing and tolerances. A section on troubleshooting and additional information on operational characteristics have been added to assist users in understanding the equipment.

Standards for Power Plant Heat Exchangers : 4th Edition, 2004

Combines present industry standards, typical purchaser requirements, and manufacturers’ experience in outlining the important design criteria for power plant heat exchangers. Topics pertinent to power plant heat exchanger include materials of construction, tube-to-tubesheet welds, temperature efficiency curves, and typical shell requirements. This edition incorporates revised or expanded sections on fouling and cleanliness factor, baffles and support plates, and expansion joints. Information has been added on tube side pressure loss, cathodic protection, and SI unit tolerances. Also, new: SI and MKH specification sheets, a table of thermal conductivity, and a heat exchanger troubleshooting guide.

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