The document discusses the effectiveness of parallel flow heat exchangers. It begins by explaining that heat exchangers are devices used to transfer energy between fluid streams, and are commonly used to control temperatures for processes, condense vapors, evaporate liquids, recover heat, reject low-grade heat, and drive power cycles. It then defines effectiveness as the actual heat transfer divided by the maximum possible heat transfer. The main topic of the document is analyzing the effectiveness of parallel flow heat exchangers.

1. Theory Of Machines(2151909)
Active Learning Assignment
Topics: Effectiveness Of Parallel Flow Heat
Exchanger
Guided By: Prof. Nikita Gupta
Branch : Mechanical Engineering
Div: 5C-2
Name: Saahil R. Kshatriya
Enrolment Number: 150120119164

2. What are heat exchangers for?
 Heat exchangers are practical devices used to transfer energy
from one fluid to another
 To get fluid streams to the right temperature for the next
process
– reactions often require feeds at high temp.
 To condense vapours
 To evaporate liquids
 To recover heat to use elsewhere
 To reject low-grade heat
 To drive a power cycle

3. Effectiveness
E = actual heat transfer /maximum possible heat
transfer
Effectiveness For parallel flow Heat Exchanger