What is an Electric Water Heater ?

What is an Electric Water Heater ?

Electric Water Heater Definition

An electric water heater is defined as a device that uses electricity to heat water for domestic or commercial purposes.

Types of Electric Water Heaters

• Normal plate heaters

• Immersion heaters

• Geyser heaters

Normal Plate Heater Working Principle

A normal plate heater uses two nickel plates to heat water through electric current, ideal for small amounts of water.

• Advantages of normal plate heaters

• They are easy to use and portable.

• They are cheap and widely available

• They can heat water quickly.

Disadvantages of normal plate heaters

• They can be hazardous, causing electric shocks or fires if not used correctly.

• They can only heat a small amount of water at a time.

• They can damage the containers or surfaces that they touch.

Immersion Heater Working Principle

An immersion heater has a copper heating element immersed in water, making it efficient for heating large quantities of water.

Advantages of immersion heaters

• They can heat large amounts of water in containers or tanks.

• They can be used for different purposes, such as bathing, washing, cooking, etc.

• They have a thermostat switch that automatically turns off the heater when the desired temperature is reached.

Disadvantages of immersion heaters

• They are more expensive and less durable than normal plate heaters.

• They can cause electric shocks or burns if not handled carefully.

• They can corrode or leak over time due to hard water or poor-quality materials.

Geyser Heater Working Principle

A geyser heater (or storage water heater) has a tank and heating elements that automatically control the water temperature.

Advantages of geyser heaters

• They can provide hot water continuously and instantly without waiting for heating.

• They can be installed on walls or floors according to convenience and space availability.

• They have an insulated body that prevents heat loss and saves energy.

Disadvantages of geyser heaters

• They are more costly and complex than normal plate heaters or immersion heaters.

• They require regular maintenance and cleaning to prevent scaling or rusting.

• They can pose a risk of scalding or bursting if not used properly.