What is Thermal Wheel or Heat Recovery Wheel? | FAHU | ERU | Animation |

A thermal wheel, also known as a rotary heat exchanger, is a device used for energy recovery in heating, ventilation, and air conditioning (HVAC) systems. Its primary purpose is to transfer heat between two air streams in buildings, typically between the outgoing exhaust air and the incoming fresh air. The goal is to improve energy efficiency by pre-conditioning the incoming air with the thermal energy from the outgoing air.
Here's a detailed explanation of how a thermal wheel works:
Structure:
The thermal wheel consists of a large circular wheel made of a lightweight material with good thermal conductivity, such as aluminum or a composite material.
The wheel is divided into segments, and each segment contains a matrix or surface material that can absorb and release heat efficiently.
Operation:
The thermal wheel is positioned in the HVAC system's air handling unit, between the exhaust and supply air streams.
As the wheel rotates, it alternately passes through the warm exhaust air stream and the cooler incoming fresh air stream.
Heat Transfer Process:
When the wheel enters the warm exhaust air stream, the matrix or surface material absorbs thermal energy from the outgoing air.
As the wheel continues to rotate, it moves into the incoming fresh air stream. The absorbed heat is then transferred to the cooler incoming air, pre-heating or pre-cooling it depending on the season.
The process is reversible, making thermal wheels suitable for both heating and cooling applications.
Rotation Mechanism:
The rotation of the thermal wheel is typically driven by a motor. The speed of rotation can be controlled based on the temperature requirements and the desired level of energy recovery.
Sealing:
To prevent cross-contamination between the exhaust and fresh air streams, the thermal wheel system is equipped with seals. These seals ensure that the air streams do not mix directly, maintaining the indoor air quality.
Applications:
Thermal wheels are commonly used in commercial buildings, industrial facilities, and other large structures where HVAC systems play a crucial role in maintaining comfort and indoor air quality.
They are particularly effective in climates with significant temperature differences between seasons.
Benefits:
Energy Efficiency: By recovering thermal energy from the exhaust air, thermal wheels reduce the overall energy consumption of HVAC systems.
Cost Savings: The recovered energy can lead to significant cost savings in heating and cooling operations.
Environmental Impact: Improved energy efficiency translates to a reduced environmental footprint, making thermal wheels a sustainable HVAC solution.
While thermal wheels are effective, it's important to note that they may not be suitable for all environments. Factors such as air quality, maintenance requirements, and system design considerations should be taken into account when deciding on the use of thermal wheels in a particular HVAC system.
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[@zeinamukbel932]

Amazing explanation!

[@faisal-hw5cm]

Great explained sir👍👍👍👍

[@zebralearnings]

Thank You 😊👍

[@mohammedshahnawaz8879]

Video was amazing.Could you please make a video on decoupler and Energy Transfer Station.Thank you

[@zebralearnings]

Yeah sure.

[@mohammadviquar6357]

Thank you so much for this valuable information in a very simple way to understand ❤

[@mohamedanas2909]

great ,thank you

[@mujeeb7100]

Specifically in pharma company and Operation theaters we exhaust return because it may contain dome infection. But tge exhaust air temp is 24 or some we have 21c too. The chillness of the exhaust air is used to reduce some temp of fresh air . The same nowadays we doing we a cooling coils. Tq

[@muhammadawais9926]

❤

[@zebralearnings]

❤️

[@mostafaabdullah8225]

Great video👏👏 Please could you tell me what is the well height in the wheel heat recovery? and what is the optimum height that increase the heat recovery efficiency?

[@annarealubit9256]

How is PM or cleaning done for these ERV wheels?

[@BUTLERENGLISH]

Hello sir,can you make a video on Heat Exchangers plates, which is in ETS Room.

[@zebralearnings]

Yeah, sure, that's an important topic.

[@BUTLERENGLISH]

@@zebralearnings Thank you

[@UmarulFarook-qx5ty]

What if the out side temp is below 20 and our required set point is 25? Consider Exhaust air is 22. ? How FAHU supply can maintain the warm?

[@zebralearnings]

There will be a heater in the duct. It'll provide warm air.

[@mohammedasrafr530]

What is that motor called