File Name: types of heat exchangers and their applications .zip
- Design and Operation of Heat Exchangers
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- Understanding Heat Exchangers
Heat Exchanger Design Discuss the critical aspects of heat exchanger design. With expertise in Hi-Pressure, Hi-Temperature and corrosive applications. Figure 1 shows a typical liquid cooling loop, consisting of a cold plate CP , pump, and heat exchanger HX connected by hoses or tubing. This Second Edition of the well-received work on design, construction, and operation of heat exchangers. Exchanger Design ch ch ch ch The shell and tube exchanger is the most commonly used type of heat-transfer equipment used in the chemical industries.
Design and Operation of Heat Exchangers
Dunn, W. Heat exchangers and cooling towers in compressor plants generally are used to cool engine and compressor jacket water, lubricating oil, and gas. Cooling systems are classified as: 1, open circulation systems, which include: a, raw-water systems, b, recirculating systems employing either open ponds, spray ponds, spray towers, atmospheric or mechanical-draft towers; or, 2, closed circulation systems, in which the substance to be cooled is passed through heat-exchanger equipment and there cooled by water, air, or other medium Atmospheric deck towers are the most acceptable for compressor plants, having high efficiency, flexibility, high capacity, and economy.
Mechanical-draft towers have higher first costs, but are compact, efficient, and independent of natural air movement. The heat exchangers for closed systems are of three types: 1, pipe coils; 2, open, or atmospheric cooling sections; and, 3, closed, or shell-and-tube exchangers. Of these the open-type is most generally used in compressor plants, depending on good water distribution and air movement. The paper is accompanied by characteristic flow diagrams for open and closed jacket-water systems, and by graphs giving the approximate cost per compressor horsepower of open and closed systems for different rates of water circulation.
Other graphs give pumping horsepower requirements of open and closed systems for different rates of water circulation.
The normal application of heat exchangers and cooling towers in a compressor plant covers engine and compressor jacket water, lubricating oil, and gas cooling.
Jacket-water cooling, in particular, has been subject to a wide divergence of opinion as to what constitutes good operating practice. Each operator used to set up his own standards, which has resulted in widely varying practices. However, in recent years, these practices have become more uniform; and today, for the same type of engines, only minor differences occur throughout the country as regards the amount of water circulated and the temperature range permitted.
The fundamental problem is the same for any two similar engines, regardless of location; and specifications setting forth operating conditions to be met should be considered carefully before any cooling equipment is purchased. There are two distinct parts to setting up cooling requirements:. Determination by the operator of the exact engine operating conditions desired. Good practice limits temperature variations within a close range, which should be determined from the engine manufacturer's recommendation, the experience of others, and the operator's own experience.
Gas-cooling requirements vary from plant to plant, but can be determined accurately by the specific job to be done. Selection of equipment to meet the operating conditions previously determined upon. This often requires some ingenuity. Local conditions of water supply, available space, atmospheric cooling factors, and other variables affect materially the type, size, and arrangement of equipment. Equipment can, and should, be selected to meet the operating condition specified. Conversely, engine operating conditions should not be changed out of the good practice range to suit the cooling equipment.
This latter procedure invites expensive maintenance which almost certainly will offset any gain in first cost or convenience realized by improper application of equipment in the cooling system. Sign In or Register. Advanced Search. Sign In. Skip Nav Destination Proceeding Navigation. Close mobile search navigation. All Days. Previous Paper Next Paper. Article Navigation. Dunn ; W. This Site. Google Scholar. Hugh R.
Lambert Hugh R. Paper Number: API Published: January 01 American Petroleum Institute. You can access this article if you purchase or spend a download.
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There are various types of heat exchangers used in process piping. Shell and tube heat exchanger is the most widely used heat exchanger. Shell and Tube Heat exchangers can be used for wide temperature and pressure range. As the name specified, it consists of a shell and a number of tubes. Shell is the housing of the exchanger and tubes are mounted inside the cylindrical shell. The working of a shell and tube heat exchanger is fairly simple.
A shell and tube heat exchanger is a class of heat exchanger designs. As its name implies, this type of heat exchanger consists of a shell a large pressure vessel with a bundle of tubes inside it. One fluid runs through the tubes, and another fluid flows over the tubes through the shell to transfer heat between the two fluids. The set of tubes is called a tube bundle, and may be composed of several types of tubes: plain, longitudinally finned, etc. Two fluids, of different starting temperatures, flow through the heat exchanger. One flows through the tubes the tube side and the other flows outside the tubes but inside the shell the shell side. Heat is transferred from one fluid to the other through the tube walls, either from tube side to shell side or vice versa.
Understanding Heat Exchangers
Design and Operation of heat Exchangers and Their Networks presents a comprehensive and detailed analysis on the thermal design methods for the most common types of heat exchangers, with a focus on their networks, simulation procedures for their operations, and measurement of their thermal performances. The book addresses the fundamental theories and principles of heat transfer performance of heat exchangers and their applications and then applies them to the use of modern computing technology. Topics discussed include cell methods for condensers and evaporators, dispersion models for heat exchangers, experimental methods for the evaluation of heat exchanger performance, and thermal calculation algorithms for multi-stream heat exchangers and heat exchanger networks. Researchers and engineers in thermal engineering, refrigeration engineering, energy engineering, process engineering, and environment engineering. Researchers and engineers who work on software development for process simulation and process control.
Romina Ronquillo. Heat exchangers are devices designed to transfer heat between two or more fluids—i. Depending on the type of heat exchanger employed, the heat transferring process can be gas-to-gas , liquid-to-gas , or liquid-to-liquid and occur through a solid separator, which prevents mixing of the fluids, or direct fluid contact.
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Когда он проволок ее по ковру, с ее ног соскочили туфли. Затем он одним движением швырнул ее на пол возле своего терминала. Сьюзан упала на спину, юбка ее задралась.