Heat using the First Law of thermodynamics Calculator

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Engineering	Chemical Engineering ↺
Chemical-Engineering	Thermodynamics ↺
Thermodynamics	Laws of thermodynamics, their applications and other basic concepts ↺

✖The change in internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state. ⓘ Change in internal energy [ΔU]			+10% -10%
✖Work is done when a force that is applied to an object moves that object.ⓘ Work [W]			+10% -10%

✖Heat is the form of energy that is transferred between systems or objects with different temperatures (flowing from the high-temperature system to the low-temperature system). Also referred to as heat energy or thermal energy. Heat is typically measured in Btu, calories or joules.ⓘ Heat using the First Law of thermodynamics [Q]

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Shivam Sinha

National Institute Of Technology (NIT), Surathkal

Shivam Sinha has created this Calculator and 100+ more calculators!

Prashant Singh

K J Somaiya College of Engineering (K J Somaiya), Mumbai

Prashant Singh has verified this Calculator and 10+ more calculators!

< 11 Other formulas that you can solve using the same Inputs

Theoretical Coefficient of Performance of a refrigerator

Theoretical Coefficient of Performance=Heat Extracted from Refrigerator/Work GO

Energy Performance Ratio of Heat Pump

Theoretical Coefficient of Performance=Heat Delivered to Body/Work GO

Cooled Compressor Efficiency

Cooled Compressor Efficiency=Kinetic Energy/Work GO

Thermal Efficiency of Heat Engine

thermal efficiency of heat engine=Work /Heat GO

Mean Effective Pressure

mean effective pressure=Work /Displacement GO

Compressor Efficiency

Compressor efficiency=Kinetic Energy/Work GO

Turbine Efficiency

turbine efficiency=Work /Kinetic Energy GO

Real Refrigerator

Real Refrigerator=heat lower /Work GO

Real Heat Engine

real heat engine=Work /Heat GO

Real Heat Pump

real heat pump=Heat/Work GO

performance of heat pump

heat pump=Heat/Work GO

< 9 Other formulas that calculate the same Output

Radial Heat flowing through a cylinder

Heat=(Thermal Conductivity*2*pi*(outer radius-inner radius)*Temperature Difference*length of cylinder)/((ln(outer radius/inner radius))*(outer radius-inner radius)) GO

Heat Transfer in a Heat Exchanger using cold fluid properties

Heat=Mass of Cold Fluid*Specific Heat Capacity of Cold Fluid*(Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid) GO

Heat Transfer in a Heat Exchanger using hot fluid properties

Heat=Mass of hot fluid*Specific Heat Capacity of Hot Fluid*(Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid) GO

Radiative Heat Transfer

Heat=[Stefan-BoltZ]*Body Surface Area*Geometric View Factor*(Temperature of surface 1^4-Temperature of surface 2^4) GO

Heat Transfer in an Isobaric Process

Heat=Number of Moles*Molar Specific Heat Capacity at Constant Pressure*Temperature Difference GO

Heat Transfer in an Isochoric Process

Heat=Number of Moles*Molar Specific Heat Capacity at Constant Volume*Temperature Difference GO

Heat Transfer in a Heat Exchanger using overall heat transfer coefficient

Heat=Overall Heat Transfer Coefficient*Area*(Outside Temperature-Inside Temperature) GO

Heat transferred in isothermal process (using pressure)

Heat=[R]*Temperature of Gas*ln(Initial Pressure of System/Final Pressure of System) GO

Heat transferred in isothermal process (using volume)

Heat=[R]*Temperature of Gas*ln(Final Volume of System/Initial Volume of System) GO

Heat using the First Law of thermodynamics Formula

Heat=Change in internal energy-Work
Q=ΔU-W

More formulas

Internal energy using the First Law of thermodynamics GO

Work using the First Law of thermodynamics GO

Turbine efficiency when actual and isentropic change in enthalpy is given GO

Thermodynamic efficiency when work is required GO

Ideal work when thermodynamic efficiency is given and the condition is work is required GO

Thermodynamic efficiency when work is produced GO

Ideal work when thermodynamic efficiency is given and the condition is work is produced GO

Actual work when thermodynamic efficiency is given and the condition is work is produced GO

Actual work when thermodynamic efficiency is given and the condition is work is required GO

Lost work when ideal and actual work are given GO

Ideal work when lost and actual work are given GO

Actual work when ideal and lost work are given GO

Rate of Lost work when rates of ideal and actual work are given GO

Rate of Ideal work when rates of lost and actual work are given GO

Rate of Actual work when rates of ideal and lost work are given GO

What is the sign convention for heat and work?

Heat Q and work W always refer to the system, and the choice of sign for numerical values of these quantities depends on which direction of energy transfer with respect to the system is regarded as positive. We adopt the convention that makes the numerical values of both quantities positive for transfer into the system from the surroundings.

How to Calculate Heat using the First Law of thermodynamics?

Heat using the First Law of thermodynamics calculator uses Heat=Change in internal energy-Work to calculate the Heat, The Heat using the First Law of thermodynamics formula is defined as the difference between internal energy and work into the system. In thermodynamics, heat is energy in transfer to or from a thermodynamic system, by mechanisms other than thermodynamic work or transfer of matter. Like thermodynamic work, heat transfer is a process involving more than one system, not a property of any one system. Heat and is denoted by Q symbol.

How to calculate Heat using the First Law of thermodynamics using this online calculator? To use this online calculator for Heat using the First Law of thermodynamics, enter Change in internal energy (ΔU) and Work (W) and hit the calculate button. Here is how the Heat using the First Law of thermodynamics calculation can be explained with given input values -> -300 = (0)-300.

FAQ

What is Heat using the First Law of thermodynamics?

The Heat using the First Law of thermodynamics formula is defined as the difference between internal energy and work into the system. In thermodynamics, heat is energy in transfer to or from a thermodynamic system, by mechanisms other than thermodynamic work or transfer of matter. Like thermodynamic work, heat transfer is a process involving more than one system, not a property of any one system and is represented as Q=ΔU-W or Heat=Change in internal energy-Work . The change in internal energy of a thermodynamic system is the energy contained within it. It is the energy necessary to create or prepare the system in any given internal state. and Work is done when a force that is applied to an object moves that object.

How to calculate Heat using the First Law of thermodynamics?

The Heat using the First Law of thermodynamics formula is defined as the difference between internal energy and work into the system. In thermodynamics, heat is energy in transfer to or from a thermodynamic system, by mechanisms other than thermodynamic work or transfer of matter. Like thermodynamic work, heat transfer is a process involving more than one system, not a property of any one system is calculated using Heat=Change in internal energy-Work . To calculate Heat using the First Law of thermodynamics, you need Change in internal energy (ΔU) and Work (W). With our tool, you need to enter the respective value for Change in internal energy and Work and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Heat?

In this formula, Heat uses Change in internal energy and Work . We can use 9 other way(s) to calculate the same, which is/are as follows -

Heat=Overall Heat Transfer Coefficient*Area*(Outside Temperature-Inside Temperature)
Heat=Mass of Cold Fluid*Specific Heat Capacity of Cold Fluid*(Inlet Temperature of Cold Fluid-Outlet Temperature of Cold Fluid)
Heat=Mass of hot fluid*Specific Heat Capacity of Hot Fluid*(Inlet Temperature of Hot Fluid-Outlet Temperature of Hot Fluid)
Heat=Number of Moles*Molar Specific Heat Capacity at Constant Volume*Temperature Difference
Heat=Number of Moles*Molar Specific Heat Capacity at Constant Pressure*Temperature Difference
Heat=[R]*Temperature of Gas*ln(Initial Pressure of System/Final Pressure of System)
Heat=[R]*Temperature of Gas*ln(Final Volume of System/Initial Volume of System)
Heat=(Thermal Conductivity*2*pi*(outer radius-inner radius)*Temperature Difference*length of cylinder)/((ln(outer radius/inner radius))*(outer radius-inner radius))
Heat=[Stefan-BoltZ]*Body Surface Area*Geometric View Factor*(Temperature of surface 1^4-Temperature of surface 2^4)

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