Ref-Wiki.com -

Technical information The refrigeration cycle Temperature and Heat

Temperature and Heat

Production of excess heat in the system will cause problems. As a rule substances expands when heated. This is the principle of thermal expansion. The linear sizes increase, but not volume. Removing the heat of a substance leads to the contract of linear dimensions and volume. This is the principle of the liquid in the glass thermometer.

Temperature is a measure of heat or cold on a certain scale. Each substance has a temperature.

The molecules are in constant motion. They move faster, higher temperatures and more slowly at lower temperatures. In theory, the molecules stop moving at the lowest temperature possible. This temperature is called absolute zero. It is about 460F (273C).

The amount of heat in the matter is directly related to the amount of molecular motion. No heat will occur only at absolute zero. At higher temperatures, the molecular movement. The number of molecular motion corresponds to the amount of heat.

Adding heat causes a temperature rise.

Heat causes a decrease in temperature. This is true, except for the cases when the issue goes through a change of state.

The heat is often confused with the temperature. Temperature measurement of thermal intensity. This is not a direct measurement of heat capacity. The enthalpy does not depend on temperature. Heat content depends on the type of material, the volume of the material, and the amount of heat that was put into or taken out of the material. For example, one Cup of coffee in 200С”F (93.3C) contains less heat than 1 gallon of coffee in 200С”F (93.3C). Bowl 200С”F (93.3C)may also contain less heat than a gallon at lower temperatures 180С”F (82.2C).

Thanks ->

Absorbent refrigerant combination Approach temperature Carbon steel pipe fitting Contact freezing Evaporating temperature Finned tube evaporator Forced draft cooling tower Gas furnace operation High side of a refrigeration system Oil separator in refrigeration cycle Setting epr valve Shell and coil evaporator Slow freezing and fast freezing
Copyright @ 2009 - 2022, "www.ref-wiki.com"