Shanghai Thenow Purification Technology Co.,Ltd.
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Difference Between Energy Recovery Ventilation And Fresh Air Ventilation System

Is there any difference between energy recovery ventilation and fresh air ventilation system? Energy recovery ventilation, also known as total heat exchange fresh air blower, is a kind of fresh air blower. The biggest difference between energy recovery ventilation and fresh air ventilation system is the core of total heat exchange inside. It can realize energy recovery and save energy.

Fresh air ventilation system: fresh air ventilation system polluted indoor air through vents and fans to the outdoors. It forms negative pressure in the indoor. Fresh air enters the indoor through the intake, so that indoor personnel can breathe high-quality fresh air. Energy recovery ventilator: energy recovery ventilator is also called full heat recovery new fan, usually refers to a kind of full heat exchange core containing fresh air, exhaust air ventilation equipment.

The working principle of the new fresh air ventilation system is: When the product is in operation, when the indoor exhaust air and fresh air flow through the heat exchanger core body in a positive crossing way respectively, due to the temperature difference and steam pressure difference between the two sides of the air flow partition, the phenomenon of heat and mass transfer occurs when the two air flows over the partition, resulting in the whole heat exchange process.

The fresh air ventilation system function is mainly used in winter and summer.

For example, in winter, the indoor air conditioning or floor heating, the temperature is relatively high, about 10 degrees, but the outdoor is a cold wind, about minus a few degrees.

The temperature difference between indoor and outdoor is 20 degrees. If the outdoor cold wind is introduced into the indoor, it will certainly affect the indoor temperature to a certain extent. When the total heat exchange fresh air fan runs in summer, the fresh air obtains the cooling capacity from the exhaust air of the air conditioner, which reduces the temperature, and is dried by the air conditioner, which reduces the moisture content of the fresh air. When running in winter, fresh air gets heat from the air-conditioning room exhaust, and the temperature rises. At the same time, it is humidified by the air-conditioning room exhaust. In this way, through the whole heat transfer process of the heat exchange core, fresh air can be recovered from the exhaust air of the air conditioner.

Because of heat recovery, heat exchange fresh air blowers operate economically, consume very little electricity, and feel comfortable, creating a sound-proof, clean and comfortable healthy living space for people. The heat recovery efficiency of the total heat exchange fresh air blower is over 65%. With the fast net total heat exchange fresh air blower, there is no need to worry about the energy consumption of air conditioning and heating.