There are two turbines, so their isentropic values are different. We can use the isentropic
value for point 1 to be the same as 2s in order to determine the actual enthalpy at point 2. we
can as well
MEC 526 Modern Power Cycles
Instructor: Dr. Juldeh Sesay
Office: 226 Heavy Engineering
Contact: Telephone: (631)632-8493
Email: [email protected]
Office Hours: Wednesdays 02-04 pm or by app
Air Pollution
Overview
o
o
Atmosphere as a Resource
Types and Sources of Air Pollution
o
o
Major Classes of Air Pollutants
Sources of Outdoor Air Pollutants
Urban Air Pollution
Effects of Air Pollutio
Georgios Xydis
Senior Researcher (project funded)
Inst. for Research &Technology,
Thessaly
Centre for Research &Technology
Open University of Cyprus, Adjunct
Tutor
Biography
George (Georgios) Xydis wo
MEC 526
EXAM 1 REVIEW
Water is the working fluid in an ideal regenerative Rankine cycle with one open
O
2
feedwater heater. Steam enters the turbine at 1400 lbf/in and 1000 F and
2
expands it to 120 l
LECTURE 1
Traditional Power Generation Cycles
make up about 80% of all power
produces in USA and world.
Alternate and sustainable power
sources (solar, wind, geothermal, fuel
cell) growing but vast
9.42 An ideal air-standard Brayton cycle produces 10 MW of power. Operating data at principal
states in the cycle are given in the table below. The states are numbered as in Fig. 9.9. Sketch
the n dia
Lecture 10
Combined Cycles and
Cogeneration Continued
OTTO, DIESEL AND DUAL CYCLES
Learning Outcomes
Conduct air-standard analyses of internal
combustion engines based on the Otto, Diesel,
and dual cy
Lecture 8
Brayton Cycle (Gas Turbines)
Continued
Regeneration Example 2-5
Calculate the cycle net output and thermal
efficiency for a regenerative Brayton Cycle with
the following operating conditions
Lecture 9
Combined Cycles and
Cogeneration
Cogeneration Systems
Are integrated systems that simultaneously yield
two valuable products, electricity and steam (or hot
water) from a single fuel input.
T
1. Consider a solar-pond power plant that operates
on a simple ideal Rankine cycle with refrigerant134a as the working fluid. The refrigerant enters the
turbine as a saturated vapor at 1.4 Mpa and lea
Homework 4
1. Consider a steam power plant that operates on a regenerative rankine cycle and
has a net power output of 150 MW. Steam enters the turbine at 10 Mpa and 500C
and the condenser at 10 kPa.
1. A simple ideal Brayton cycle operates with air with minimum and maximum
temperature of 27 O C and 727 O C. It is desired so that the maximum cycle pressure is
2000 kPa and the minimum cycle pressur
MEC 526
Modern Power Cycles
Homework Assignment
Combined Cycle
Due 10/29/15
Stony Brook University
Department of Mechanical Engineering
The combined-cycle power plant shown below uses a gas
turbine as
1. A non-ideal air-standard regenerative Brayton cycle produces 10MW of power. The effects of irreversibilities
in the adiabatic expansion and compression process are to be considered. The regenerator
1. Consider a steam power plant that operates on
the ideal reheat Rankine cycle. The plant maintains
the inlet of the high-pressure turbine at 600 psia
and 600 , the inlet of the low-pressure turbine
LECTURE 1
Mollier Diagram
The Mollier diagram provides
the properties of saturated and
superheated steam at various
temperatures and pressures.
Steam is often super heated
to increase enthalpy (energy
1. Consider a solar-pond power plant that operates
on a simple ideal Rankine cycle with refrigerant134a as the working fluid. The refrigerant enters the
turbine as a saturated vapor at 1.4 Mpa and lea
1. Consider a steam power plant that operates on the ideal reheat Rankine cycle. The
plant maintains the inlet of the high-pressure turbine at 600 psia and 600 O F , the inlet
of the low-pressure turb
1. Consider a steam power plant that operates on the ideal reheat Rankine cycle. The
plant maintains the inlet of the high-pressure turbine at 600 psia and 600 O F , the inlet
of the low-pressure turb
Name:
Homework 1
1. Find the enthalpy, entropy and % moisture for each of
the state point below using Mollier Diagram: Please mark
each point on the diagram and enter values after each
question. Hand
Homework 4
1. Consider a steam power plant that operates on a regenerative rankine cycle and
has a net power output of 150 MW. Steam enters the turbine at 10 Mpa and 500C
and the condenser at 10 kPa.
Midterm 1 (100%)
MEC 526: Modern Power Cycles
Name: _ ID#: _
1. The figure below is a steam power plant with one open and three closed feedwater heaters.
Plot the below steam cycle on a T-S diagram an
Lecture 3
Ideal Rankin Cycle with Reheat
and Regeneration
Ideal Rankin Cycle with Reheat
Last section, Increasing the boiler pressure:
1. increases the thermal efficiency of the Rankine cycle,
2. also
MEC 526
Modern Power Cycles
Homework Assignment
Combined Cycle
Due 11/16/17
Stony Brook University
Department of Mechanical Engineering
The combined-cycle power plant shown below uses a gas
turbine as
1. Ideal Rankin cycle with one feedwater heater with drain cascaded backwards
to condenser similar to lecture example.
Steam @ 1250 psia and 850F
s2 = s 3
s1 = s2
Steam @ 300 psia
Saturated liquid @ 1
Lecture 4
Ideal Rankine Cycle with Reheat
and Regeneration Continued
Lecture 4
Ideal Rankine Cycle with Reheat
and Regeneration Continued
Terminal Temperature Difference
TTD= Tsat Ty
TTD usually range
Lecture 10
Combined Cycles and
Cogeneration Continued
OTTO, DIESEL AND DUAL CYCLES
Learning Outcomes
Conduct air-standard analyses of internal
combustion engines based on the Otto, Diesel,
and dual cy
Name:
Homework 1
1.
Find the enthalpy, entropy and % moisture for each of the
state point below using Mollier Diagram: Please mark
each point on the diagram and enter values after each
question. Hand
INTRODUCTION
Traditional Power Generation Cycles
make up about 80% of all power
produces in USA and world.
Alternate and sustainable power
sources (solar, wind, geothermal, fuel
cell) growing but va