Anwesh Blogs

Have you ever felt your phone charger get warm or heard your car make noise? That’s energy being lost  even though the machine is working. Let’s see where that energy goes and how engineers try to save it.

1. Friction

Friction is a force that opposes the relative motion or tendency of motion between two surfaces in contact. It is a force that reduces the efficiency of a moving body.

• Example: Car engines lose energy because their parts slide against each other..

2. Heat Loss

Heat loss is the transfer of thermal energy from a warmer area to a colder one. Machines often get hot because some energy escapes as heat.

• Example: Laptops and chargers warm up during use.

3. Sound and Vibration

Noise and shaking are signs of lost energy.

• Example: A noisy washing machine uses extra energy.

How Engineers Fight Energy Loss

Thankfully, engineers always find ways to make machines more efficient. Here’s what they do:

1. Reduce Friction

·        Use special oils or lubricants.

·        Design smoother parts that slide easily.

·        Use ball bearings to reduce rubbing.

2. Control Heat Loss

·        Add insulation to keep heat where it’s needed.

·        Use cooling systems (like fans or radiators) wisely.

·        Reuse waste heat, like in hybrid car engines.

3.  Limit Noise and Vibration

·        Add dampers or rubber mounts to absorb vibration.

·        Shape parts to reduce noise.

·        Use quieter motors or materials.

Why It Matters

Less energy loss means lower bills, better machine performance, less harm to the planet

Conclusion

All machines lose some energy, but smart design helps reduce waste. Every bit saved helps us and the environment.