Texas Education Agency
Texas Gateway: Applications of Thermodynamics: Heat Pumps and Refrigerators
By the end of this section, you will be able to describe the use of heat engines in heat pumps and refrigerators, demonstrate how a heat pump works to warm an interior space, explain the differences between heat pumps and refrigerators,...
![State Energy Conservation Office: Grounded Coupled Heat Pumps [Pdf] Handout](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "State Energy Conservation Office: Grounded Coupled Heat Pumps [Pdf] Handout")
State Energy Conservation Office-Texas
State Energy Conservation Office: Grounded Coupled Heat Pumps [Pdf]
Explains how a heat pump system works, and how a ground-coupled system improves its efficiency and saves money.
Georgia State University
Georgia State University: Hyper Physics: Heat Pump
Heat flow from a hot region to a cold region is described and explained. Applications of this phenomenon (specifically heat pumps and refrigerators) are discussed. Excellent graphics.
MadSci Network
Msn: How Does an Air Conditioner or Refrigerator Work?
From the Mad Scientist Network. Using a question and answer format, this page explains the answer to the question "How does An air conditioner or refrigerator work?" The scientific principles which underly their operation and the process...
University of Sydney (Australia)
Thermal Physics Module: Refrigerators and Heat Pumps [Pdf]
Refrigerators and heat pumps are described. Their operation is explained and the variables which improve their efficiency is discussed.
Other
Applied Thermodynamics: Heat Engines
Forward and reverse heat engines are discussed and explained at this site from Applied Thermodynamics. Diagrams are provided. Efficiency equations are given and discussed.
Other
Applied Thermodynamics: Steam Turbine
A steam turbine is defined at Applied Thermodynamics. The individual steps of a steam turbine engine are illustrated and explained.
Other
Applied Thermodynamics: Diesel Cycle
The P-V diagram for a diesel cycle is provided and discussed at this site from Applied Thermodynamics. The steps of the thermodynamic cycle are labeled (and defined elsewhere). An equation for thermal efficiency is given.