Energy Conservation And Waste Heat Recovery Pdf

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energy conservation and waste heat recovery pdf

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Waste heat recovery and denitrification of flue gases from gas-fired boilers

Mayhew, Ronald E.. With rising fuel costs, energy conservation has taken on added significance. Installation of waste heat recovery units WHRU's on gas turbines is one method used in the past to reduce gas plant fuel consumption. More recently, waste heat recovery on multiple reciprocating compressor engines also has been identified as having energy conservation potential. This paper reviews the development and implementation of a WHRU potential.

WHRU's for these engines should be differentiated from high-speed engines and gas turbines in that low-speed engines produce low-frequency, high-amplitude pulsating exhaust. The design of a WHRU system must take this potentially pulsating exhaust. The design of a WHRU system must take this potentially destructive pulsation into account. At Katy, the pulsation forces were measured at high-amplitude frequencies and then used to design a pulsation filter and structural stiffness into the various components of the WHRU to minimize vibration and improve system reliability.

The Katy gas plant operated by Exxon Co. Both process to recover ethane, propane, and butanes-plus products. Both compressed and high-pressure field gases are dehydrated and then processed before they enter the sales pipelines Fig.

The heat-transfer medium used in the process plant is a heavy aromatic heating oil. The WHRU provides supplemental heat from the exhaust of six 3,hp [kW] provides supplemental heat from the exhaust of six 3,hp [kW] integral compressors. Much of the development work for the WHRU and subsequent modifications involved equipment that experienced cyclic loading, which included vibration caused by resonance or insufficient wall thicknesses.

Cyclic loading is merely a dynamic force causing deflection at some frequency. Resonance is the condition or phenomenon of a vibrating system that responds to a harmonic force with maximum amplitude and occurs when the frequency of the harmonic force is the same as the natural frequency of the vibrating object.

This loading can be induced acoustically or mechanically. In the WHRU, mechanical resonance could result from the transmission of engine vibration, while acoustical resonance may result from exhaust pulsation forces. The solutions to these problems were 1 to add mass and structural support to the vibrating components of the system and 2 to install a pulsation filter upstream of the heater to reduce the pulsation amplitudes. System Process and Mechanical Design. The heat-transfer fluid used in the process plant reboilers is a heating oil or hot oil with a specific gravity of 0.

They recover waste heat from two 20,hp [ The oil enters the The exhaust is directed from each engine towards its respective in. Each diverter valve automatically switches its respective exhaust flow to a muffler the fail-safe position during startup and when an engine shuts down. The diverter valve operates like two butterfly valves within a tee that are connected by a common linkage.

It consists of two disks supported by shafts, which are operated together by a pneumatic spring return actuator. Diverter valves do not provide complete shutoff, so another valve is required to ensure isolation from the WHRU during engine maintenance.

Knife gate valves were installed between each diverter valve and the exhaust duct header to prevent this exhaust backflow. The knife gate valves are opened and closed by manually operated air motors.

The exhaust duct header varies in diameter from 30 to 60 in [76 to cm]. From the header a transition tee connected the ducts to the waste heater. The original rectangular tee in the duct to the heater was removed later when a pulsation filter was installed. In addition to the existing bellows-type expansion joints at each engine exhaust, expansion joints of a different design were installed in the duct header between each engine and in the main duct upstream of the heater.

Sign In or Register. Advanced Search. Sign In. Skip Nav Destination Article Navigation. Close mobile search navigation Article navigation. Volume 36, Issue Previous Article Next Article. Article Navigation. September 01 Mayhew Ronald E.

This Site. Google Scholar. J Pet Technol 36 09 : — Article history Published Online:. Mayhew, Ronald E. Society of Petroleum Engineers. You can access this article if you purchase or spend a download. View full article. Sign in Don't already have an account? Personal Account. You could not be signed in. Please check your username and password and try again. Sign In Reset password.

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Items in Shodhganga are protected by copyright, with all rights reserved, unless otherwise indicated. Shodhganga Mirror Site. Show full item record. Performance study of air conditioner waste heat recovery system. Srinivasan, P S S. Air conditioner Air conditioner waste Energy conservation Heat recovery system Mechanical engineering Waste heat recovery process.

MENG, Yang et al. Energy efficiency performance enhancement of industrial conventional wood drying kiln by adding forced ventilation and waste heat recovery system: A comparative study. Maderas, Cienc. ISSN X. Conventional kilns dominate the wood drying industry.

Skip to Main Content. A not-for-profit organization, IEEE is the world's largest technical professional organization dedicated to advancing technology for the benefit of humanity. Use of this web site signifies your agreement to the terms and conditions. Recovery status and prospect of low-grade waste energy in China Abstract: Energy shortage has seriously hindered the economic development in many countries. The energy conservation and waste heat recovery are paid more attention recently, especially in developing countries, where the energy utilization efficiency is often neglected for accelerating development before energy price is rapidly rising up. In China, the metallurgy industry, cement industry, ceramic industry, glass industry produces a lot of low-grade waste energy which is specially defined as waste gas of low temperature, molten slag of high temperature and the fuel of low LHV low heating value in this paper.

Mayhew, Ronald E.. With rising fuel costs, energy conservation has taken on added significance. Installation of waste heat recovery units WHRU's on gas turbines is one method used in the past to reduce gas plant fuel consumption. More recently, waste heat recovery on multiple reciprocating compressor engines also has been identified as having energy conservation potential. This paper reviews the development and implementation of a WHRU potential.

A waste heat recovery and denitrification system was developed for improving energy conservation and emissions control especially for control of PM2. The system uses enhanced heat and mass transfer techniques in a packed heat exchange tower with self-rotation and zero-pressure spraying, low temperature NO oxidation by ozone, and neutralization with an alkali solution. This is a preview of subscription content, access via your institution.

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marianaslibrary.org (Bureau of energy Efficiency,. Govt. of India). ❖ Waste Heat Recovery: Technology and.


4 Comments

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  2. Sophie P. 20.01.2021 at 04:37

    Waste heat is heat which is generated in a process but then dumped to the environment even though it could still be reused for some useful and economic purpose.

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