Efficiency of Induction Heating

A Comparative Analysis of Efficiency and Energy Consumption: Induction Heating vs. Conventional Methods

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At UltraFlex Power Technologies, inquiries about potential energy savings through induction heating, compared to other prevalent heating techniques are common. This article outlines the possible energy savings that users might experience.
Induction heating minimizes heat loss and transfers energy directly to the component being heated, leading to impressive efficiency and substantial energy savings. It is an exceptionally effective choice for industrial thermal applications.

1.) A research conducted by the Lawrence Berkeley National Laboratory, under the Department of Energy, revealed that induction cooktops transfer 84% of their power to the heated load, contrasted with only 71% for electric coils and just 40% for gas heating.

Type of Heating ElementEfficiency PercentageElectric Induction84.00%Electric Radiant71.00%Gas40.00%

Efficiency Chart Source: US Department of Energy

*The efficiency of electric radiant heating can fluctuate based on the size of the heating element compared to the size of the item being heated. If the element is larger than the item, the efficiency declines significantly.

2.) The findings from UltraFlex’s extensive testing align with these statistics. Below is our conservative approximation of the power efficiently delivered to the intended load compared to the heat disseminated to the surrounding environment through various heating methodologies.

Examples of Stated Power vs. Delivered PowerTypeInput Power (kW)EfficiencyDelivered Power (kW)Induction*2.890%2.52Electric Radiant2.055%1.1Gas3.550%1.75

* This refers to a magnetic steel load below curie.

3.) Normalizing the data above reveals the input power necessary to deliver 1.0 kW across all methods, allowing us to swiftly assess the energy savings of induction heating in comparison to electric and gas alternatives.

Required Input Power for 1.0 kW Delivered Power and Corresponding Energy SavingsTypeInput
Power (kW)EfficiencyDelivered Power
(kW)Energy Savings of Induction vs AlternativesInduction1.%1.0 Electric Radiant1.%1.039%Gas2.%1.044%

4.) In scenarios involving batch heating, the efficiency can surge even further, as energy is expended only when induction heating is employed. Unlike traditional methods requiring continuous operation of furnaces and ovens, induction heating incurs no excess energy consumption.

For further details on induction water heater, please don't hesitate to reach out.

References:
Berkeley, Lawrence. “Technical support document for residential cooking products, volume 2: Potential impact of alternative efficiency levels for residential cooking products.” n.d.

How Does It Function?

Induction heating enables the heating of metals and other conductive materials by generating an electric current within them. In induction geysers, the primary coil connects to an AC power source. This alternating current forms a magnetic field that induces voltage in a secondary coil, usually immersed in the water tank. As the current circulates through the secondary coil, thermal energy is released into the water, effectively raising its temperature. The absence of direct AC around the water enhances the safety of these geysers relative to conventional ones.

Applications

Benefits of Induction Water Heating

There are numerous advantages to heating water via induction. Some key benefits include:

• Proven higher efficiency
• Precise temperature control
• Energy conservation
• Rapid heating
• Safer than traditional water heaters
• Available in a variety of designs, occupying less space

Brands Offering Induction Geysers

Various brands provide induction geysers in India, accessible both online and offline. Some notable brands available on Amazon include Crompton, AO Smith, Lifelong, Venus, Racold, Bajaj, and Anchor by Panasonic Astra. Prices range from Rs 6,000 to Rs 15,000 depending on specifications, and they typically have storage capacities from 3 to 6 liters. Havells has introduced the Magnatron water heater, claiming to be India’s first heater utilizing 'Element Free' induction heat transfer technology.

Induction geysers represent a new wave of technology employing magnetic induction for water heating, enabling a larger surface area of water in the tank to be heated more effectively compared to traditional geysers. This advanced technology facilitates quicker heating, eventually lowering overall electricity consumption, as induction geysers can cut down on the required electricity by up to 33%. While they do not match the electricity cost reductions offered by solar heaters, they remain a cost-effective and energy-smart alternative. Induction geysers are typically made up of two components: the generator unit and the storage tank. The size of the induction unit dictates its suitability, with smaller models ideal for kitchen and single shower use, and larger versions catering to bigger family needs. Moreover, induction geysers are optimal for holiday homes, as they can be activated upon arrival, providing hot water with minimal waiting time thanks to their rapid heating capabilities. A variety of brands are available, with price ranges ensuring options cater to different consumer needs.

For additional insights regarding the Full Bridge Electromagnetic Induction Heater, please get in touch, and we will be glad to provide professional assistance.