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Why you calculate enthapy?
Generally enthalpy is analgous to the energy of a material at a particular temperature and pressure. It is calculated to determine the energy a material holds, or more often, enthalpy differences are calculated to determine how much energy is required to bring a material from one temperature and pressure to another temperature and pressure.
What is the relationship between enthalpy and temperature?
Enthalpy is the amount of energy in a system and when this changes (when a reaction happens), the energy is either released (exothermic) or absorbed (endothermic) and this energy is usually released or absorbed as heat. Therefore when the enthalpy decreases, heat is released from the system making it exothermic. In contrast, when the enthalpy increases, heat is absorbed making it endothermic.
What is the physical significance of enthalpy?
it is the total energy required to create any system by displacing its volume and pressure.
Is the heat content of a system at a constant pressure?
Yes it is possible, for example when water freezes there is a point when the temperature remains constant however energy is released as the water condenses.
Pressure and enthalpy graph of freon22?
See links below. See also Perry And Green's Chemical Engineering Handbook Page Chapter 2, page 2-273.
How do you read pressure chart of ocean?
you read it.
What characteristics of a substance is NOT affected by enthalpy and entropy?
Pressure is not affected by enthalpy and entropy.pressure
Is there a chart showing blood pressure and pulse determinators?
can some one help me read a chart in my A&P lab manual
What determines the temperature at which a refrigerant vaporizes?
pressure / temperature / volume /enthalpy
Define enthalpy and how it is measured?
Enthalpy is a particular amount of heat that is produced or released at a given pressure. There are specific equations that must be used to calculate enthalpy.
Why you use mollier chart in mechanical engeeniring?
the Mollier chart gives the values of a property say enthalpy by defining any other two properties i.e. dryness fraction,pressure like this any two fixed values can provide the other values.
The heat content of a system at constant pressure?
Enthalpy
How can you use a relative humidity?
A psychometric chart is a graph of the thermodynamic parameters of moist air at a constant pressure, often equated to an elevation relative to sea level. The chart is normally set at dry bulb temperature, wet bulb, dew point, relative humidity, humidity ratio, specific enthalpy. Read on a horizontal vs diagonal intersection.
Do kids have low blood pressure?
Please see the related link below, for an easy to read chart.
When the portion of a pressure enthalpy diagram is beneath the saturation curve then?
The refrigerant is at constant pressure
What special name is given to a heat change at constant pressure?
Enthalpy
What happens when the portion of a pressure-enthalpy diagram is beneath the saturation curve?
compression
