This document provides an overview of thermal energy systems analysis. It discusses key concepts like conservation laws and balances that engineers must understand to analyze or design thermal energy systems. Examples of thermal energy systems include heating/cooling systems and power/refrigeration cycles. The document also outlines software tools commonly used for analysis, like REFPROP and Engineering Equation Solver. It defines types of energy and the laws of energy, and notes that simulation allows testing design modifications to achieve more energy-efficient results.

1. ENERGY SYSTEM
ANALYSIS
LEC. 01

2. They are thermal because they often
involve the transfer of heat.
typically use working fluids to transport
energy
Thermal Energy Systems Design and
Analysis

3. • A heating and cooling system for a
commercial or residential building
• A network of pipes and pumps used to
transport a fluid to and from various processes
within an industrial facility
• A vapor power cycle used to deliver electrical
power
• A vapor compression refrigeration cycle used
for cooling or heating
examples of thermal energy systems

4. For the engineer to analyze or design thermal
energy systems,
it is important to understand the
fundamental concepts expressed in terms of
various conservation laws and balances.

5.  Before Computers:
the solution of the mathematical model was
done by constructing many graphs
representing the equations and looking for
intersection points.
 Modern equation-solving software makes
this task quite easy

6.  The National Institute of Standards and
Technology (NIST) maintains the most
current fluid property calculation software
known as REFPROP.
 Engineering Equation Solver
 Matlab
Software

7. Units and Unit Systems

8. static forms of energy – can be stored
 gravitational potential energy
 kinetic energy
 internal energy
dynamic forms of energy –not stored but
transferred
 Work
 Heat
Concept and laws of energy
types of mechanical energy

9.  Quantity
 Quality - its capacity to produce a change
fundamental aspect of energy
The more disordered an energy (heat, internal
energy) is, the lower its quality is, which means, its
capacity to produce useful effects is low, while
ordered energies (electrical, all forms of mechanical
energy) have the highest quality and are convertible
into other forms of energy.

10. in any transformation of energy that is
considered, in any process that takes
place in a unit or an installation,
although the energy is conserved, the
quality of that energy decreases.

11. Energy sources. Fossil and
renewable energies

12. Simulation overview

13. Simulation allows users to understand the
interrelation between design and
performance parameters, to identify
potential problem areas, and so implement
and test appropriate design modifications.
The design to result is more energy conscious
with better levels and quality attained
throughout.