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)
Share Image
Let Others Know
Facebook
Twitter
Reddit
LinkedIn
Email
WhatsApp
Copied!