Daikin heat recovery ventilation

Types of Daikin Heat Recovery Ventilation

Daikin heat recovery ventilation refers to the process of extracting fresh air from the outside while simultaneously removing stale air from the inside of a building. It incorporates a device that recovers the heat energy from the exhaust air and transfers it to the incoming fresh air, pre-heating or pre-cooling it in the process.

Daikin offers a variety of heat recovery ventilation systems to ensure good indoor air quality. Here are some of them:

• HRV/ERV central ducted system:

  The HRV/ERV central ducted system is a whole-house mechanical ventilation system that uses the Daikin central heat recovery ventilator. It is fixed at the ceiling or on the wall and consists of one air transfer unit (central) and two (or more) ducts. Its working principle is to transfer heat from the exhaust air to fresh air through the HRV/ERV unit using one central unit and multiple ducts. Moreover, the system can be integrated with the building’s central heating and cooling system.

• HRV/ERV central non-ducted system:

  Similar to the above system, the central non-ducted system is a whole-house mechanical ventilation system that uses the Daikin central heat recovery ventilator. However, it employs a central unit without ducts. The whole non-ducted system transfers heat from the exhaust air to fresh air through the HRV/ERV unit while using only one central unit without the need for ducts. This design may simplify installation in some applications. Then, the loss of heat can be minimized, and good indoor air quality can be provided throughout the home.

• HRV/ERV decentralized system:

  An alternative to the central HRV/ERV systems, the decentralized mechanism utilizes individual ventilators in a room or local areas instead of one central unit. This configuration may be more affordable for smaller or localized applications. The decentralized method gives flexible installation options, enabling localized ventilation control where required. Each individual ventilator recovers heat from outgoing air and uses it to warm incoming fresh air on a room-by-room basis.

• Daikin MHRV:

  The Daikin MHRV is a mechanical heat recovery ventilation unit. It is independently ventilated. It has a compact and contemporary design, which is suitable for both new and refurbishment projects. Additionally, the MHRV provides constant airflow in two selectable modes—normal and quiet. Moreover, it allows the exchange of stale indoor air with fresh outdoor air, ensuring a healthy living environment, and recovers heat from the exhaust air.

• Daikin HRV Ventis:

  The Daikin HRV Ventis is a specifically constructed ventilation solution combining heat recovery and controlled ventilation. It is an HRV unit designed to circulate air throughout a home while recovering heat from the outgoing stale air. The unit supports individual room ventilation and central unit options. Also, it has a fully integrated ventilation, heat recovery, and filtration system. The system assures constant air renewal throughout the home and contributes to improving indoor air quality.

Specifications and maintenance of Daikin heat recovery ventilations

Specifications

The specification of Daikin heat recovery ventilation systems varies with models.

• Airflow rates: The amount of airflow, which is the volume of air, is conveyed in different units. The units can be used to measure the amount of air that the ventilations process. It may be in cubic meters per hour (m3/h) or liters per second (l/s).
• Total heat exchange: The total heat exchange rate describes how the Daikin heat recovery ventilation systems transfers heat from one airstream to another without mixing the two streams. Common units of this specification are kW (kilowatts) or kW-% (kW with percentage).
• Pressure/Power: It includes static pressure and power consumption. The pressure rating of the Daikin heat recovery ventilation is usually in Pascal (Pa) and refers to the static pressure of the unit at the rated airflow. On the other hand, power refers to the power consumption of the ventilation system, which is in watt (W) or kilowatt (KW).
• Dimensions/Weight: Daikin heat recovery ventilations dimensions and weight are usually expressed in length by width by height (LxWxH) in millimeters (mm). And the weight is in kilograms (kg). In some units, it can be up to 100 kg.
• Air filters: Daikin heat recovery ventilation system's air filtration function is to purify indoor air. It helps remove dust, pollen, and other particles to improve air quality. The specifications of the air filters include the filter type, such as primary filters, HEPA filters, etc., and the filter class, for example, MERV (Minimum Efficiency Reporting Value).
• Application: Daikin heat recovery ventilations are used in many applications. Specifications of some models indicate that commercial units are used in commercial applications, and residential ones are used in residential rooms.

Maintenance

For optimal performance, the Daikin heat recovery ventilation systems need regular maintenance and care. With proper maintenance, users can protect the function and efficiency of the device.

• Regular cleaning: Regular cleaning is essential. It can ensure that the unit does not accumulate dirt or dust. Users should clean air filters regularly according to the manufacturer's instructions. Using appropriate cleaning methods and cleaners is very important.
• Check and replace parts: During the unit's operation, various parts may be worn or damaged. Therefore, checking the state of each part and promptly replacing it as needed is important. Users should inspect air filters, fans, heat exchangers, control systems, etc. They should also replace or repair them as needed.
• Prevent humidity and mold: Moisture and mold can harm the unit's performance and indoor air quality. Therefore, users need to take measures to prevent humidity and mold. It is necessary to ensure the proper ventilation and drying of the unit's environment.
• Pay attention to noise and vibration: Users should pay attention to the noise and vibration of the unit during use. If abnormal situations arise, they should deal with them timely and appropriately.

Scenarios

• Residential buildings:

  In homes and apartments, Daikin heat recovery ventilation units are used to ventilate the entire building while ensuring appropriate temperature levels within the residence at all times and minimizing energy loss. Detachable filtration devices installed in Daikin heat recovery ventilation units can purify the air indoors, eliminating the need for consumers to open windows to let fresh air into the room, minimizing home invasion and guaranteeing family members' safety.

• Office buildings:

  Both corporate offices and government facilities need to use Daikin heat recovery ventilation systems to ensure that people working in office buildings can stay focused on work throughout the entire day, maximizing work efficiency. This is especially important during large-scale meetings, as the ventilation units can ensure adequate oxygen supply within a short period of time while expelling indoor foul air.

• Minimize condensation on windows and mold growth:

  Because Daikin heat recovery ventilation units can expel excess indoor moisture, they are often used in humid climates to reduce condensation on windows, maintaining excellent indoor visibility. Additionally, less moisture in the room slows down the reproduction speed of bacteria and fungi, lowering the risk of indoor pollution.

• Industrial manufacturing:

  In environments with high levels of dust and particulate matter, efficient and constant Daikin heat recovery ventilation units are used to ensure that the optimal clean working atmosphere can be maintained inside the factory workshop. This is particularly important for factories engaged in delicate product assembly and precision instrument manufacturing. Moreover, the transfer of process heat and moisture that the ventilation units do can reduce the load on air conditioning and heating systems, thereby enhancing the entire energy efficiency of the factory.

• Schools and universities:

  To ensure that students can learn in a healthy and comfortable environment, Daikin heat recovery ventilation systems can be installed in classrooms, laboratories and libraries. Meanwhile, the continuous replacement of indoor air by ventilation systems can prevent the spread of airborne diseases and increase the overall safety of the school.

• Commercial buildings:

  In shopping malls, restaurants, hotels and other public places, Daikin heat recovery ventilation systems help to keep the ventilation inside the building constant and to mitigate unpleasant odors and the crowding of people. At the same time, the system's low noise operation ensures that consumers will have an excellent entertainment and leisure experience no matter where they go to spend their time.

How to choose Daikin heat recovery ventilation

• Daikin heat recovery ventilation system size:

  A business buyer should consider the airflow performance of the Daikin ventilation system when determining its size. Confirm how much fresh air the units can bring per hour and whether this amount can adequately ventilate and replace the indoor air of the entire commercial building. Also, buyer needs to evaluate the building's insulation and heat transfer surface area to ensure that heat exchange can efficiently recover indoor energy.

• Daikin heat recovery ventilation system control options:

  A business buyer can choose more and more advanced control methods. Some units are equipped with CO2 sensors, which adjust the air volume automatically according to changes in room occupancy. Others have internet connectivity that allows remote operations and monitoring through mobile applications or web platforms, providing more convenience for whole commercial building management.

• Installation requirement:

  A business buyer needs to consider the installation requirements of Daikin heat recovery ventilators to ensure that the selected models can be properly and effectively installed in the commercial space. Check that there is enough installation space to accommodate the ventilator and its connecting ducts. Additionally, the buyer needs to determine whether the installation will require external support structures, such as mounting brackets or suspension systems, to ensure that the ventilator can be stably and reliably fixed in position.

• Maintenance of Daikin heat recovery ventiltors:

  Another essential factor is selecting a commercial Daikin HV ventiltor for business buyers. Routine maintenance and cleaning ensure the continuous and efficient operation of the ventilation system. Daikin heat recovery ventilators feature easily accessible air filters and user-friendly filter replacement to assist users in promptly and conveniently changing the filters. Also, some Daikin heat recovery ventilators are equipped with self-cleaning condensate trays, which can automatically remove the accumulated water and contaminants inside them, thereby reducing the risk of bacterial growth and clogs.

FAQ

Q1: What is the function of a heat recovery ventilator?

A1: A heat recovery ventilator's main function is to exchange the indoor and outdoor air of a building while transferring the heat from one airstream to the other.

Q2: What is the difference between HRV and ERV?

A2: The primary difference between HRV and ERV units is how they handle moisture. An HRV unit will transfer heat but will not transfer humidity. On the other hand, an ERV will transfer both heat and humidity. This feature makes HRVs more suitable for regions with high indoor humidity and ERVs preferable in drier climates.

Q3: What is the Daikin heat recovery ventilation system?

A3: Daikin offers a lineup of HVAC units equipped with an HRV function. This means that even if the system has to bring in more outdoor air to dilute indoor contaminates, it can still achieve high energy efficiency.