the thermal efficiency of feedwater heater operating at 2mpa

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the thermal efficiency of feedwater heater operating at 2mpa

Industrial boilers can provide heating support for the processes of edible oil production such as drying/cooling, hot air baking, crushing/peeling, steaming and frying, etc. The long-time and stable operation of boiler can directly affect the edible oil products. Therefore, edible oil plants prefer to selecting high-quality, energy-saving and eco-friendly boilers in order to improve the production quality and efficiency and lower the boiler operating costs.

The boiler is a kind of special equipment and its export to the international market and competitiveness in the world lie in its conformity marks from international authoritative certification bodies. ZOZEN has extended its sales network from the entire Asia to Africa, Oceania, Eastern Europe, America and other regions over the years. ZOZEN also has obtained important international certifications such as ASME, PED, DOSH, IBR, and has been qualified for independent import and export of industrial boilers. Its various series of boiler products have been sold to more than 100 countries and regions around the world.

    • solved: consider a regenerative vapor power cycle with two

      Solved: Consider A Regenerative Vapor Power Cycle With Two

      Consider a regenerative vapor power cycle with two feedwater heaters, a closed one and an open one, as shown in Figure P8.60. Steam enters the first turbine stage at 12 MPa, 4808C, and expands to 2 MPa. Some steam is extracted at 2 MPa and fed to the closed feedwater heater.

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    • problem 1. a power plant operates with a regenerat

      Problem 1. A Power Plant Operates With A Regenerat

      Problem 1. A power plant operates with a regenerative power cycle with two feedwater heaters, one open, one closed. Steam enters the first-stage turbine at 8.0 MPa and 480°C, and expands to 2 MPa. Some steam is extracted at 2MPa and fed to the closed feedwater heater.

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    • solved: consider a regenerative vapor power cycle with two

      Solved: Consider A Regenerative Vapor Power Cycle With Two

      Some steam is extracted at 2MPa and fed to the closed feedwater heater. The remainder expands through the second-stage turbine to 0.3MPa, where an additional amount is extracted and fed into the open feedwater heater operating at 0.3MPa. The steam expanding through the third-stage turbine exits at the condenser pressure of 6kPa.

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    • engineering thermodynamics: problems and solutions, chapter-9

      Engineering Thermodynamics: Problems and Solutions, Chapter-9

      9-1-21 [reheat-2MPa] where some of the steam is extracted and diverted to the open feedwater heater operating at 700 kPa. The remaining steam expands through the second turbine stage to the condenser at a pressure of 7 kPa. the temperature at the inlet of the closed feedwater heater, (b) the thermal efficiency of the cycle and (c) the

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    • power plant cycles with multiple direct contact heaters

      Power Plant Cycles with Multiple Direct Contact Heaters

      Apr 01, 2020· Power plant efficiency can be maximized by replacing closed (tube surface-type) feedwater heaters (CFWHs) with direct contact heaters (DCHs).

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    • thermal efficiency and cost analysis of solar water heater

      Thermal efficiency and cost analysis of solar water heater

      Dec 17, 2018· Numerical analysis and some software have been used to study and design the thermal efficiency solar water heaters using U-type evacuated tube solar collector and the results showed that this solar collector should provide 40.5% of the total consumed energy in the year (Li et al., 2015).

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    • feedwater heater - an overview | sciencedirect topics

      Feedwater Heater - an overview | ScienceDirect Topics

      One common practice today is to utilize a feedwater heater arrangement with recirculation as shown in Fig. 5.8.Condensate is delivered to the feedwater heater at the same temperature as in the arrangement in the previous example shown on Fig. 5.7.It is mixed with a portion of the feedwater heater outlet water that is recirculated back to the inlet until the mix reaches an acceptable (140°F

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    • assignment 8 vapor power cycles - sfu.ca

      Assignment 8 Vapor Power Cycles - SFU.ca

      heater. Feedwater leaves the closed heater at 205C and 8.0 MPa, and condensate exits at 2 MPa. The condensate is trapped into the open feedwater heater. Steam extracted from the second turbine at 0.3 MPa. The stream exiting the open feedwater is saturated liquid at 0.3 MPa. The net power output of the cycle is 100 MW. There is no stray heat

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    • boiler and condenser pressures - rankine cycle

      Boiler and Condenser Pressures - Rankine Cycle

      Significant increases in the thermal efficiency of steam turbine power plants can be achieved through reducing the amount of fuel that must be added in the boiler. This can be done by transferring heat (partially expanded steam) from certain sections of the steam turbine, which is normally well above the ambient temperature, to the feedwater.

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    • feedwater heater - wikipedia

      Feedwater heater - Wikipedia

      A feedwater heater is a power plant component used to pre-heat water delivered to a steam generating boiler. Preheating the feedwater reduces the irreversibilities involved in steam generation and therefore improves the thermodynamic efficiency of the system. This reduces plant operating costs and also helps to avoid thermal shock to the boiler metal when the feedwater is introduced back into

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    • international journal of chemtech research

      International Journal of ChemTech Research

      (32MPa- 40MPa) and high temperature (600°C - 800°C), medium pressure (2MPa-8Mpa), Medium temperature (300°C-600 ° C) and low pressure (5kPa-100kPa), resulting in a nominal operating conditions a thermal efficiency of 46.2%, a second law efficiency of 79% and a

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    • rebuilding aging feedwater heaters | power engineering

      Rebuilding aging feedwater heaters | Power Engineering

      Feb 10, 2010· Engineering staff at plants without built-in redundancy traditionally thought they would have to go offline to repair a feedwater heater problem. …

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    • consider a steam power plant operating based on the ideal

      Consider a steam power plant operating based on the ideal

      Some steam leaves the turbine at a pressure of 1.2MPa and enters the open feedwater heater. Find the fraction of steam extracted from the turbine. Calculate the thermal efficiency of the cycle.

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    • solved: regeneration: open feedwater heater 3. problem 8.3

      Solved: Regeneration: Open Feedwater Heater 3. Problem 8.3

      Saturated liquid exits the open feedwater heater at 120 lbf/in? The net power output of the cycle is 1 109 Btu/h. Determine for the cycle a. the mass flow rate of steam entering the first stage of the turbine, in lb/h. b. the rate of heat transfer, in Btu/h, to the working fluid passing through the steam generator. c. the thermal efficiency.

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    • feedwater heating system - heat regeneration

      Feedwater Heating System - Heat Regeneration

      The process of heat regeneration significantly increases the thermal efficiency of steam turbine by reducing the amount of fuel that must be added in the boiler. This process is known as heat regeneration and a variety of heat regenerators can be used for this purpose. Sometimes engineers use the term economiser that are heat exchangers intended to reduce energy consumption, especially in case

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    • 1. optimize power plant operations

      1. Optimize Power Plant Operations

      flexibly rather than maximizing efficiency for one specific mode of operation. All of these factors would tend to have a negative impact on a unit’s thermal efficiency. 1. Optimize Power Plant Operations Primary Air Secondary Air Coal Coal Handling Mills Ash Ash Air Heater ESP ID Fans Steam Turbine ~ LP Feedwater Heaters HP Feedwater Heaters

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    • technical support document - us epa

      Technical Support Document - US EPA

      process are 165 psia. All outlet steam is used feedwater heater - there are no closed by the process, i.e., no steam is condensed for feedwater heaters. LHV is 3% of HHV additional power output. Assume boiler for bituminous coal. efficiency of 87% burning bituminous coal. No condensate is …

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    • ame 50531: intermediate thermodynamics homework solutions

      AME 50531: Intermediate Thermodynamics Homework Solutions

      2.4 Problem 4: 12.97 Consider an ideal air-standard Stirling cycle with an idealregenerator. The minimum pressure and tmeperature in the cycle are 100 kPa, 25 C, the compression ratio is 11, and the maximum temperature in the cycle is 1000 C. Analyze each of the four processes in this cycle for work and heat transfer, and determine the overall perfomance of the engine.

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