Computational Model for High-Pressurized Heat Recovery Steam Generator Heat Transfer Study

2020 ◽  
Author(s):  
D.A. Khokhlov ◽  
M. N. Zaichenko ◽  
K. V. Sterkhov ◽  
K.A. Pleshanov
Keyword(s):  
Heat Transfer ◽  
Computational Model ◽  
Steam Generator ◽  
Heat Recovery ◽  
Heat Recovery Steam Generator ◽  
Transfer Study

Modeling and Simulation of a Heat Recovery Steam Generator Using Partially Known Design Point Data

2013 ◽  
Vol 845 ◽  
pp. 596-603
Author(s):  
Mesfin G. Zewge ◽  
T.A. Lemma ◽  
A.A. Ibrahim ◽  
D. Sujan
Keyword(s):  
Heat Transfer ◽  
Steam Generator ◽  
Performance Optimization ◽  
Heat Recovery ◽  
Conservation Equation ◽  
Feed Water ◽  
Heat Recovery Steam Generator ◽  
Transfer Coefficients ◽  
Design Point ◽  
Point Data

In a cogeneration or combined heat and power plant, a heat recovery steam generator (HRSG) helps achieve overall thermal efficiency as high as 80%. The purpose of this study is to model and simulate the HRSG given partial design point data. The pinch and approach temperatures are optimized within generally accepted range. In order to satisfy the energy conservation equation, tuning parameters are used for the overall heat transfer coefficients corresponding to the evaporator and economizer. For the off-design simulation, the values of pinch and approach temperatures are adjusted until the modeling error is within a set limit. The effect of mass flow rate on the heat transfer coefficient is accounted for & by employing empirical relations. A 12 Ton/hr natural circulation HRSG was considered as a case study. The validation test on inlet temperatures of the exhaust gas and feed water to the economizer demonstrated relative percentage errors of 0.4246% and 1.8776%, respectively. The model can be used for fault detection and diagnostic system design, performance optimization, and environmental load assessment.

Mobile Cogeneration Unit (MCU) Computational Model Adjusted With Test Cell Conditions to be Used to Predict Future Performance in Different Sites

2009 ◽  
Author(s):  
Jose Ramon Vega-Galaz ◽  
Oscar Garci´a-Bulle´ ◽  
Ken Cassel
Keyword(s):  
Computational Model ◽  
Steam Generator ◽  
Gas Turbines ◽  
Heat Recovery ◽  
Superheated Steam ◽  
Field Measurements ◽  
Test Cell ◽  
Heat Recovery Steam Generator ◽  
Future Performance ◽  
Duct Burner

The mobile cogeneration unit (MCU) consists of two gas turbines and one heat recovery steam generator mounted in a trailer with standard dimensions to supply 3 MW of electricity at ISO conditions and 14,000 to 28,000 pounds per hour of superheated steam depending on duct burner duty and steam conditions. A computational model using Thermoflex software was developed to adjust Test Cell measurements with it. The purpose of this model is to predict MCU performance in different sites of implementation. Some field measurements in Test Cell and other sites are compared with model results showing very good approach.

Investigation Tests of the P-134 Heat-Recovery Steam Generator Used as Part of the PGU-230T Combined-Cycle Power Unit

2019 ◽  
Vol 66 (5) ◽  
pp. 331-339
Author(s):  
M. N. Maidanik ◽  
A. N. Tugov ◽  
N. I. Mishustin ◽  
A. E. Zelinskii
Keyword(s):  
Power Unit ◽  
Steam Generator ◽  
Heat Recovery ◽  
Combined Cycle ◽  
Heat Recovery Steam Generator
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