Digital split type energy recovery fresh air/exhaust unit

Release date: 2024-12-19 09:24:00 Reading volume: 2276 Author: Keruite

Safety requirements for digital split type energy recovery fresh air/exhaust fan unitsHospitals are

Safety requirements for digital split type energy recovery fresh air/exhaust fan units

Hospitals are densely populated places carrying pathogens and viruses, and are regarded as gathering centers for pathogenic microorganisms. Not only patients, but also healthcare workers may carry bacteria and viruses. Hospitals need air safety measures to reduce the occurrence of cross infection

Air quality requirements

Patients are a vulnerable group with poor tolerance and adaptability, and indoor environment has a significant impact on their rehabilitation, even becoming a decisive factor. Hospitals need good indoor air quality to improve the medical environment and enable patients to recover as soon as possible.

Energy consumption demand

Hospitals are major energy consumers, and the energy consumption of ventilation and air conditioning systems accounts for over 60% of the total building energy consumption. A set of efficient and energy-saving air conditioning system solutions can not only meet ventilation needs, but also effectively reduce air conditioning energy consumption.

Intelligent demand for digital split type energy recovery fresh air/exhaust fan units

Intelligence is an inevitable trend in the development of hospital buildings. Such as centralized control and management of equipment, real-time monitoring and measurement of energy consumption, automated operation and on-demand supply of ventilation systems. Intelligence has become an important manifestation of the medical environment and hospital level, and is also an important component of green buildings

Liquid circulation energy recovery system

Install water air heat exchangers on the exhaust and fresh air systems of the system, respectively, to transfer heat to the fresh air or exhaust through liquid circulation, thereby preheating or pre cooling the fresh air. This type of sensible heat recovery is called liquid circulation heat recovery.

The circulating liquid is usually water. In cold regions, in order to lower the freezing point of water and prevent pipe cracking, a certain proportion of ethylene glycol is usually added to the water, hence it is also called ethylene glycol heat recovery.

Ethylene glycol, abbreviated as EG, is a colorless, odorless, sweet tasting liquid that is toxic to animals. The lethal dose for humans is approximately 1.6g/kg. Ethylene glycol is miscible with water and is used as a solvent, freeze solution, and raw material for synthesizing polyester. The common frozen liquid in daily life is an aqueous solution of ethylene glycol.

In most existing buildings, there are significant air safety hazards and energy waste in ventilation. In northern buildings, traditional air conditioning fresh air or total heat/sensible heat exchangers are generally used for ventilation. The former has typical air safety issues and energy waste, while the latter saves some energy consumption but increases maintenance costs and air safety hazards. Therefore, ventilation in buildings has become one of the main energy sources, and how to solve indoor air quality problems while ensuring air safety and energy efficiency has become a bottleneck in the development of building ventilation.

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