Basic physical science and technology needed for Ocean Cities
Thermodynamic heat pump cycles or refrigeration cycles are the conceptual and mathematical models for heat pumps and refrigerators . A heat pump is a machine or device that moves heat from one location (the 'source') at a lower temperature to another location (the 'sink' or 'heat sink') at a higher temperature using mechanical work or a high-temperature heat source. [ 1 ] Thus a heat pump may be thought of a "heater" if the objective is to warm the heat sink (as when warming the inside of a home on a cold day), or a "refrigerator" if the objective is to cool the heat source (as in the normal operation of a freezer). In either case, the operating principles are identical. [ 2 ] Heat is moved from a cold place to a warm place. [ edit ] Thermodynamic cycles Heat pump and refrigeration cycle
Alpha type Stirling engine. There are two cylinders. The expansion cylinder (red) is maintained at a high temperature while the compression cylinder (blue) is cooled. The passage between the two cylinders contains the regenerator. Beta Type Stirling Engine. There is only one cylinder, hot at one end and cold at the other.
A natural block of (water) ice Ice is water frozen into a solid state. It can appear transparent or opaque bluish-white color , depending on the presence of impurities or air inclusions. The addition of other materials such as soil may further alter its appearance. Ice appears naturally in forms of snowflakes , hail , icicles , ice spikes and candles , glaciers , pack ice , frost , and polar ice caps . It is an important component of the global climate and plays an important role in the water cycle . Ice
This article is about the " adiabatic " Stirling cycle . For the "idealized" Stirling cycle , see the Stirling engine article. The Stirling cycle is a thermodynamic cycle that describes the general class of Stirling devices. This includes the original Stirling engine that was invented, developed and patented in 1816 by Reverend Dr. Robert Stirling with help from his brother, an engineer. [ 1 ] Stirling cycle