• Helpline: +91-8058868746
  • Mail us:
    Tutorial Library

Learning Point

Water Heater (Geyser)

Previous Next

What is Water Heater?

Water heating is a thermodynamic process that uses an energy source to heat water above its initial temperature. Typical domestic uses of hot water include cooking, cleaning, bathing, and space heating. In industry, hot water and water heated to steam have many uses.

The most common energy sources for heating water are fossil fuels: natural gas, liquefied petroleum gas, oil or sometimes solid fuels (coal or firewood. These fuels may be consumed directly or by the use of electricity (which may derive from any of the above fuels or from nuclear or renewable sources). Alternative energy such as solar energy, heat pumps, hot water heat recycling, and sometimes geothermal power, may also be used as available, usually in combination with gas, oil or electricity.


History of Water Heater:-

In London, England, in 1868, a painter named Benjamin Waddy Maughan invented the first instantaneous domestic water heater that did not use solid fuel. Named the geyser after an Icelandic gushing hot spring, Maughan's invention made cold water at the top flow through pipes that were heated by hot gases from a burner at the bottom. Hot water then flowed into a sink or tub. The invention was somewhat dangerous because there was no fluke to remove heated gases from the bathroom. A water heater is still sometimes called a geyser in the UK.

Maughn's invention influenced the work of a Norwegian mechanical engineer named Edwin Ruud. The first automatic, storage tank-type gas water was invented around 1889 by Ruud after he immigrated to Pittsburgh, Pennsylvania (US). The Ruud Manufacturing Company, still in existence today, made much advancement in tank-type and thankless water heater design and operation.


                                                                                        school-chalao-water-heater1 image


How Gas Water Heater work?

Fundamentally, a water heater is an appliance that converts energy to heat and transfers that heat to water. It’s connected to a cold water supply pipe and has an outgoing hot water pipe—or system of pipes—that supplies heated water to faucets and appliances.

The majority of water heaters are fuelled by natural gas, though propane-fuelled and electric water heaters are not unusual. Where natural gas is available, it is a much less expensive energy source than electricity.

A gas-fuelled storage water heater heats water by means of a burner beneath the tank. Natural gas (or propane or kerosene, in some cases) is piped to a gas valve.

A thermostat that detects the temperature of water in the tank regulates fuel delivery to the burner, which is ignited by a pilot light or spark ignition. A vent collects toxic emissions from the burner and pipes them up through the tank, out the top, and normally up through the roof. Some newer, high-efficiency water heaters have fan-assisted vents that can be piped out through a wall.


                                                                   school-chalao-water-heater2 image


Safety from Water Heater:-

1. Set hot water heater temperature below 120° F.

2. Don't keep combustible material or flammable material or flammable material within 18" of the hot water heater.

3. Follow the manufacturer's guidelines for recommended maintenance schedule.

4. Test safety relief valve once a year to ensure proper operation (this device protects the heater from over-pressurizing and from exceeding 210° F.)

5. When leaving for vacation, set hot water heater temperature at its lowest setting.  This will save money and reduce the risk of any problems while you are away.

6. Keep area around hot water heater, clean and free of combustible and flammable material.

7. Flush hot water heater through drain valve at least once a year to remove sediment build-up.


                                                                     school-chalao-water-heater3 image


Very Useful (0)

Useful (0)

Not Useful (0)