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A geyser, or water heater, is a heat transfer technique that uses an energy source to raise the temperature of water above its beginning temperature.
Cooking, cleaning, bathing, and space heating are all common uses of hot water in the home. Hot water and steam have numerous applications in industry.
Water is heated in vessels called as water heaters, kettles, cauldrons, pots, or coppers in the home. These metal pots, which heat a batch of water, do not provide a constant supply of heated water at a predetermined temperature.
Natural hot springs are the most common source of hot water. The temperature changes with the rate of consumption, getting cooler as the rate rises.
Water heaters, hot water heaters, hot water tanks, boilers, heat exchangers, geysers (Southern Africa only), and calorifiers are all appliances that deliver a constant supply of hot water.
These names vary by area, as well as whether they heat potable or non-potable water, whether they are used in the home or in industry, and their energy source. Household hot water refers to potable water heated for purposes other than space heating in domestic installations (DHW).
For heating water, fossil fuels (natural gas, liquefied petroleum gas, oil) or solid fuels are often employed. These can be consumed directly or used to generate power, which then heats water.
Electricity for heating water can originate from a variety of sources, including nuclear power and renewable energy. Alternative energy sources such as solar energy, heat pumps, hot water heat recycling, and geothermal heating can all be used to heat water, and are frequently used in conjunction with fossil-fuel or electricity-powered backup systems.
Types Of Water Heaters/Geyser
Hot water for space heating can be heated in a boiler using fossil fuels, while potable water can be heated separately. This is a frequent technique in the United States, particularly when warm-air space heating is used.
Storage water heaters (tank-type)
The tank type, often known as storage water heaters, is used in most North American and Southern Asian homes and businesses.
These are made up of a cylindrical jar or container that keeps water hot and ready to use at all times. 75–400 L (20–100 US gallons) are typical sizes for domestic use. Electricity, natural gas, propane, heating oil, sunlight, and other energy sources may be used.
Natural gas heaters are the most popular in the United States and most European countries since the gas is commonly piped across cities and towns and is now the most cost-effective. Natural gas water heaters in the United States are typically 150–190 L (40–50 US gal) with a burner rated at 10.0–11.7 kilowatts (34,000–40,000 BTU/h) for families with no special needs.
When larger flow rates are necessary for a short period of time, this is a common configuration.
Water is heated in a pressure vessel that can resist hydrostatic pressures similar to those found in the mains supply. A pressure reduction valve is occasionally used to keep the pressure in the vessel at a safe level.
These vessels are known as hot water tanks in North America, and they can include an electrical resistance heater, a heat pump, or a gas or oil burner that heats water directly.
Point-of-use (POU) vs centralized hot water
Between point-of-use and centralized water heaters, a locational design decision must be made. Traditional centralized water heaters are still a viable alternative for small buildings.
Multiple POU water heaters may be a preferable solution for larger buildings with intermittent or infrequent hot water demand, as they can reduce long waits for hot water from a remote heater.
The choice of a tanked vs. tankless water heater, or the energy source for the heat, is only partially independent of the location of the water heater(s).
Tankless water heaters are becoming more popular. They are also known as instantaneous, continuous flow, inline, flash, on-demand, or instant-on water heaters.
These high-capacity water heaters heat water as it passes through them, and they don’t keep any water inside save what’s in the heat exchanger coil. Because of their high thermal conductivity and ease of construction, copper heat exchangers are favored in these units.
Tankless heaters can be installed at multiple points-of-use (POU) throughout a home, far from a central water heater, or bigger centralized models can still be used to meet all of a home’s hot water needs.
The major advantages of tankless water heaters are a copious continuous flow of hot water (as opposed to a limited flow of constantly heated hot water from conventional tank water heaters) and, in some cases, potential energy savings.
The biggest downside is their substantially higher initial expenses; according to a study conducted in Minnesota, tankless water heaters have a 20- to 40-year payback period. On-demand natural gas will cost 30% more than a less efficient natural gas heated hot water tank during its lifetime.
Geyser Prices In South Africa
Below are prices of geysers in South Africa.
|Lpg 20 L Gas Geyser water Heater With Solid Flue||
|Solar Geysers – Pitch Roof – 150L 2 Panels||R13 330.00|
|Gas Geysers – Various Options – Size: 20 Litre||R5 449.99|
|Solar Crest 125ML Low-pressure Solar Geyser||R6 999.00|
|Solar Geysers – Pitch Roof – 200L 2 Panels||R14 670.00|
|Instant Hot Water Geyser||R2 995.00|
|150L Solar Geyser – Low Pressure Acdc Sabs Solar Geyser||R7 949.01|
|Kwikot 150 L Superline Geyser DSG-150-5||R3 799.00|
|Solarwize 12V Retro Fit Solar Geyser Kit 200 Liter||R12 699.00|
|Solar Geysers – Pitch Roof – 100L Non-elect||R9 600.00|
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