Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

The Carnot Cycle01:30

The Carnot Cycle

2.8K
Converting work to heat is an irreversible process, and the purpose of a heat engine is to reverse the effect partially. Heat engines aim to increase the efficiency of the reversal, that is, maximize the work retrieved from heat. If the efficiency of a heat engine were 100%, it would imply reversing the process completely without introducing any other effect. Thus, it would violate the second law of thermodynamics.
What could be the theoretical limit to the efficiency of a heat engine? The...
2.8K
The Carnot Cycle and the Second Law of Thermodynamics01:20

The Carnot Cycle and the Second Law of Thermodynamics

2.5K
The Carnot engine works between two heat reservoirs of fixed temperatures. The Carnot cycle begs the following question: Is it possible to devise a heat engine that is more efficient than a Carnot engine between two fixed temperatures? The answer lies in designing a Carnot refrigerator.
Since the individual steps in a Carnot cycle can be reversed, the entire cycle is, thus, reversible. If a Carnot cycle is reversed, it becomes a Carnot refrigerator. It extracts heat Qc from a cold reservoir at...
2.5K
Efficiency of The Carnot Cycle01:16

Efficiency of The Carnot Cycle

2.5K
The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
2.5K
Heat Engines01:10

Heat Engines

2.7K
A heat engine is a device used to extract heat from a source and then convert it into mechanical work used for various applications. For example, a steam engine on an old-style train can produce the work needed for driving the train.
Whenever we consider heat engines (and associated devices such as refrigerators and heat pumps), we do not use the standard sign convention for heat and work. For convenience, we assume that the symbols Qh, Qc, and W represent only the amounts of heat transferred...
2.7K
Refrigerators and Heat Pumps01:07

Refrigerators and Heat Pumps

2.2K
Refrigerators or heat pumps are heat engines operating in a reverse direction. For a refrigerator, the focus is on removing heat from a specific area, whereas, for a heat pump, the focus is on dumping heat into one particular area. A refrigerator (or heat pump) absorbs heat Qc from the cold reservoir at Kelvin temperature Tc and discards heat Qh to the hot reservoir at Kelvin temperature Th, while work W is done on the engine’s working substance.
A household refrigerator removes heat from...
2.2K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Safety Profile of Submandibular Gland Reduction and Parotid-Tail Minimal Shaving in Deep Neck Lifting: A 341-Patient East Asian Series.

Aesthetic surgery journal. Open forum·2026
Same author

Mortality of Nonoperatively Managed Geriatric Pelvic Ring Fractures.

Cureus·2026
Same author

Effectiveness of Intraosseous Morphine for Pain Control in Total Knee Arthroplasty: A Double-Blinded, Randomized Trial.

The Journal of bone and joint surgery. American volume·2026
Same author

Geometry-Programmable Heat Routing via Shear-Aligned BNNT/Epoxy Composites: From Passive Spreading to Directed Guiding.

Small methods·2026
Same author

Provision of Video Education Instead of an In-person Visit for Pediatric Buckle Fractures: A Randomized Controlled Trial.

Journal of pediatric orthopedics·2026
Same author

Successful Medical Management of Severe Macroglossia Associated With Lingual Abscess in a Dog.

Journal of the American Animal Hospital Association·2026

Related Experiment Video

Updated: Jun 10, 2025

Fast Pyrolysis of Biomass Residues in a Twin-screw Mixing Reactor
07:30

Fast Pyrolysis of Biomass Residues in a Twin-screw Mixing Reactor

Published on: September 9, 2016

27.6K

Improving waste-incineration energy recovery efficiency using a reverse calculation algorithm to estimate waste

Minseob Lim1, Youngjae Lee1, Yongwoon Lee1

  • 1Low-Carbon Emission Control R&D Department, Research Institute of Sustainable Development Technology, Korea Institute of Industrial Technology, Cheonan-si, Chungcheongnam-do, Republic of Korea.

Waste Management (New York, N.Y.)
|October 20, 2024
PubMed
Summary

Predicting waste heating value and composition is challenging. This study developed a novel reverse calculation method and simulation model to optimize waste incinerator operation and improve energy recovery efficiency by 10%.

Keywords:
Energy recovery efficiencyHeating valueIncineration heat energyWaste compositionWaste incinerator

More Related Videos

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
06:34

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner

Published on: October 25, 2017

7.9K
Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization
09:46

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Published on: May 19, 2019

8.1K

Related Experiment Videos

Last Updated: Jun 10, 2025

Fast Pyrolysis of Biomass Residues in a Twin-screw Mixing Reactor
07:30

Fast Pyrolysis of Biomass Residues in a Twin-screw Mixing Reactor

Published on: September 9, 2016

27.6K
Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner
06:34

Operation of a 25 KWth Calcium Looping Pilot-plant with High Oxygen Concentrations in the Calciner

Published on: October 25, 2017

7.9K
Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization
09:46

Reducing Willow Wood Fuel Emission by Low Temperature Microwave Assisted Hydrothermal Carbonization

Published on: May 19, 2019

8.1K

Area of Science:

  • Environmental Engineering
  • Chemical Engineering
  • Energy Recovery

Background:

  • Waste heating value and composition are critical for incinerator operation but highly variable, making prediction difficult.
  • Accurate prediction is essential for optimizing waste incineration processes and energy recovery.

Purpose of the Study:

  • To develop a novel method for deriving waste heating value and composition using operating data and a physics-based model.
  • To create a process simulation model for predicting waste incinerator performance.
  • To propose an optimized operating strategy for enhanced energy recovery.

Main Methods:

  • A reverse calculation algorithm utilizing operating data and a physics-based model was developed.
  • A process simulation model was employed to predict system performance.
  • Heating values and compositions were derived for a target incinerator.

Main Results:

  • The novel method successfully derived waste heating values and compositions.
  • A process simulation predicted improved energy recovery efficiency.
  • The proposed operating strategy increased energy recovery by approximately 10% compared to existing operations.

Conclusions:

  • The developed methodology enables accurate calculation of waste heating value and composition.
  • This approach facilitates the establishment of optimal waste incinerator operations.
  • The findings are applicable to various waste incineration systems, enhancing energy recovery.