A Novel Energy Saving and Power Production System Performance Analysis in Marine Power Plant Using Waste Heat

2009 ◽  
Author(s):  
Yalcin Durmusoglu ◽  
Tanzer Satir ◽  
Cengiz Deniz ◽  
Alper Kilic
Keyword(s):  
Power Plant ◽  
Performance Analysis ◽  
Energy Saving ◽  
Production System ◽  
System Performance ◽  
Waste Heat ◽  
Power Production

scholarly journals Performance analysis of microcontroller based electronic load controller

2018 ◽  
Vol 13 (1) ◽  
pp. 20-35
Author(s):  
Amir Raj Giri ◽  
Bikesh Shrestha ◽  
Rakesh Sinha
Keyword(s):  
Power Plant ◽  
Performance Analysis ◽  
System Performance ◽  
Power Source ◽  
Total Power ◽  
Induction Generator ◽  
Hydro Power ◽  
Unique Method ◽  
And Performance ◽  
Electronic Load

The paper ‘Performance Analysis of Microcontroller based Electronic Load Controller’ is an approach for design, fabrication and performance analysis of microcontroller based ELC for 300 Watt Pico hydro controller. Electronic Load Controller (ELC) is an approach for regulating total power in the system with Pico-hydro power plant. The paper presents a unique method to maintain the system performance by regulating the generated power. The system voltage and current is measured by microcontroller to calculate the consumer power. Based upon the consumer power the dump power is varied accordingly. The performance analysis of ELC unit was done with power source from Nepal Electricity Authority (NEA) grid line as well as with separately excited induction generator under various loading conditions. The different resistive, capacitive and inductive loads were taken into consideration and the performance of the system based on voltage, current and power profiles were obtained.Kathmandu University Journal of Science, Engineering and TechnologyVol. 13, No. 1, 2017, 20-35

scholarly journals Performance Analysis of a Combined Cycle Power Plant with Simultaneous Cooling of Inlet Air Streams to the Compressor and Condenser

2018 ◽  
Vol 4 (1) ◽  
pp. 2-25
Author(s):  
Ifeanyi Henry Njoku ◽  
Chika Oko ◽  
Joseph Ofodu
Keyword(s):  
Power Plant ◽  
Performance Analysis ◽  
Waste Heat ◽  
Combined Cycle ◽  
Integrated System ◽  
Refrigeration Cycle ◽  
Exergy Destruction ◽  
Combined Cycle Power Plant ◽  
Absorption Refrigerator ◽  
Air Streams

Abstract: This paper presents the thermodynamic performance analysis of an existing combined cycle power plant to be retrofitted with a waste heat driven aqua lithium bromide absorption refrigerator for cooling the inlet air streams to the compressor and air-cooled steam condenser. The power plant is located in the hot and humid tropical region of Nigeria, latitude 4°45′N and longitude 7°00′E. This was achieved by performing energy and exergy analysis of the integrated system. Using the operating data of the existing combined cycle power plant, the results of the analysis showed that by cooling the inlet air streams to 15oC at the compressors, and to 29oC at the air-cooled steam condenser, the net power output, thermal and exergy efficiencies of the combined cycle plant increased by 7.7%, 8.1% and 7.5% respectively while the plant total exergy destruction rate and specific fuel consumption dropped by 10.8% and 7.0% respectively. The stack flue gas exit temperature reduced from 126oC to 84oC in the absorption refrigerator, thus reducing the environmental thermal pollution. The COP and exergy efficiency of the refrigeration cycle was 0.60 and 27.0%, respectively. Results also show that the highest rate of exergy destruction in the combined cycle power plant occurred in the combustion chamber while the highest rate of exergy destruction in the absorption refrigeration cycle occurred in the evaporator followed by the absorber.

Electricity Generation From Fuel Cell Waste Heat Using an Organic Rankine Cycle

2014 ◽  
Author(s):  
Lucien Bronicki ◽  
Carl N. Nett ◽  
Josh Nordquist
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Power Plant ◽  
Waste Heat ◽  
Local Heating ◽  
Organic Rankine Cycle ◽  
Power Production ◽  
Combined Cycle ◽  
Commercial Application ◽  
Fuel Cell Stack

Fuel cells produce exhaust waste heat that can be harnessed to either meet local heating needs or produce additional electricity via an appropriately chosen bottoming cycle. Power production can often be more economically attractive than heating due to the much higher value of electricity than heat on an equivalent energy basis, especially given fuel cell incentives and subsidies that are based on the net electrical output of the (combined cycle) fuel cell power plant. In this paper we review the application of the Organic Rankin Cycle (ORC) for power production from fuel cell waste heat, with emphasis on the resulting improvements in overall power plant power output, efficiency, economics (e.g., cents/kWh maintenance costs), and emissions levels (e.g., lb/MWh emissions). We also highlight a much less obvious advantage of ORC bottoming of fuel cells; namely, its ability to partially compensate for fuel cell stack degradation over time, and corresponding potential to extend the time required between fuel cell stack overhauls. We will also review the relative difficulty of several well established commercial applications of the ORC for power production from waste heat — such as power production from gas turbine exhaust, etc. — in comparison to fuel cell applications. We conclude that not only is the ORC ideal for fuel cell bottoming, but also that fuel cells are a nearly ideal commercial application area for the ORC. In closing, we summarize a recently completed project believed to be the world’s first commercial application of ORC technology to a fuel cell power plant. This project was completed in less than a year after its initiation, and utilizes a single ORC in conjunction with five fuel cells, all located within a fuel cell park that produces nearly 15 MW of electricity.

scholarly journals Economic Analysis of Heat Pump Recovery System for Circulating Water Waste Heat in Power Plant

2021 ◽  
Vol 256 ◽  
pp. 02011
Author(s):  
Ze Wang ◽  
Honghong Shen ◽  
Qunyin Gu ◽  
Daoyuan Wen ◽  
Gang Liu ◽  
...  
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Heat Pump ◽  
Waste Heat ◽  
Heat Pumps ◽  
Water Saving ◽  
Absorption Heat Pump ◽  
Circulating Water ◽  
Cold Source ◽  
Heat Pump Unit

The use of heat pump technology to recover the waste heat of circulating water from the power plant instead of steam extraction for heating can not only improve the thermal efficiency of the unit and reduce the loss of cold source, but also has great advantages in energy saving. This paper uses absorption and compression heat pumps to recover the waste heat of circulating water in the power plant to study its energy-saving benefits. Under the same heating load, the economics of the two heat pumps are calculated and analyzed. The results show that the energy-saving benefits of absorption heat pump units are far greater than compression units. But in terms of water saving, the water saving capacity of the compression heat pump unit is higher than that of the absorption heat pump.

Annual performance analysis of small scale industrial waste heat assisted solar tower power plant and application of nanofluid

2021 ◽  
Author(s):  
Elias M. Salilih ◽  
Nidal H. Abu-Hamdeh ◽  
Radi A. Alsulami ◽  
Muhyaddin J.H. Rawa ◽  
Abdulmalik A. Aljinaidi ◽  
...  
Keyword(s):  
Power Plant ◽  
Performance Analysis ◽  
Industrial Waste ◽  
Waste Heat ◽  
Small Scale ◽  
Industrial Waste Heat

Application of Double-Used Absorption Heat Pump in Power Plants

2012 ◽  
Vol 542-543 ◽  
pp. 70-73 ◽  
Author(s):  
Xin Hui Cao ◽  
Guang Zhang ◽  
Xi Lun Wang ◽  
Yu Ning Zhang
Keyword(s):  
Power Plant ◽  
Energy Saving ◽  
Heat Pump ◽  
Power Plants ◽  
Waste Heat ◽  
Water Saving ◽  
Energy Utilization ◽  
Absorption Heat Pump ◽  
Quantitative Calculation ◽  
Steam Extraction

Absorption heat pump (AHP) heating in power plants in winter is an effective way to recover waste heat and make full use of energy. In this paper, quantitative calculation is taken to analyze the energy saving and economy efficiency of AHP heating in a power plant. The rate of energy utilization ηtp, the coal and water saving amount and the increased income of AHP heating are calculated. Results show AHP heating in power plants is superior to steam extraction heating both in energy saving and economy.

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