Sensible Heat Formula

Sensible Heat Formula

Sensible Heat Formula is for students to calculate sensible heat emitted into the atmosphere. This formula called Sensible Heat Formula will help students find out the value of emission of a specific type of heat called sensible heat.

What is sensible heat?

Sensible heat is a type of energy that is either received or released into the atmosphere. Sensible heat is only concerned with changes in the temperature of gases or materials, not with phase shifts. The transition between the solid, liquid, and gas phases has an impact on latent heat. The air flow in an electric furnace is calculated using the Sensible Heat Formula.

Sensible Heat Formula

The Sensible Heat Formula can be written as Qsensible= 1.10 x cfm x (to – ti).

Here, the symbols represent

Qsensible = Heat gain from outside in Btu/h

1.10 = product of heat capacity of air 0.018 Btu/oF

Cfm = rate of flow of air entering from outside

to= Temperature outside in oF

ti = Temperature inside in oF

Sensible Heat Examples

Some examples of the Sensible Heat Formula can be found as follows, but the students must first understand the SI unit of the Sensible Heat Formula. When air is heated or cooled, the sensible heat involved (also known as the heating or cooling capacity) can be computed in SI units as

hs = cp ρ q dt


hs = sensible heat (kW)

cp = specific heat of air (1.006 kJ/kg oC)

ρ = density of air (1.202 kg/m3)

q = air volume flow (m3/s)

dt = temperature difference (oC)

Whereas in Imperial units as

hs = 1.08 q dt


hs = sensible heat (Btu/hr)

q = air volume flow (cfm, cubic feet per minute)

dt = temperature difference (oF)

Sensible Heat vs. Latent Heat

The primary distinction between sensible and latent heat is that sensible heat will either cause an increase in temperature or a reduction in temperature. The temperature change in latent heat will be continuous and unchanging.

Solved Example

If students want to solve more practical problems on Sensible Heat Formula are available on Extramarks. The resources made available to students through the Extramarks website and app can help them learn more about selenium acid. Students get access to resources such as NCERT solutions in the student’s chosen language, study materials for various classes and courses, mock exams, doubt-clearing sessions, subject- and language-based solutions, and tools for exam preparation. Remind your students to come or chat with Extramarks staff members about the services and any questions they may have. Students could visit Extramarks to learn more about the sources and empower themselves with knowledge.

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FAQs (Frequently Asked Questions)

1. What is a sensible heat process?

Thermal energy that can be seen and felt is known as sensible heat. This kind of heat is known to increase a substance’s temperature without altering its phase.

The amount of thermal energy required to raise a substance’s temperature without triggering a phase transition is known as sensible heat. It is possible to see and feel this kind of heat. Allowing a hot cup of coffee to cool (releasing heat into the environment), preparing a hot bath by heating up a pot of water, and the warmth from the fireplace warm the space are all examples of releasing heat into the environment.