The paper describes the working principle and the application characteristics for both constant and variable air volume valves.Based on the project cases of a laboratory,and then the different functional requirements of the laboratory are taken into consideration.Accordingly,the constant and variable air volume valves are employed to adjust the air supply and exhaust volumes of the laboratory in real time,and the indoor static pressure is controlled independently through the differential air volume in the laboratory room.In the case of ensuring the safe operation of laboratory,the reasonable application of both constant and variable air volume valves can reduce the energy consumption of ventilation and air conditioning system,and therefore the operating cost of the system can be reduced.The research results of the paper provide theoretical basis and technical guidance for optimizing the design of ventilation and air conditioning system of laboratory.
Constant air volumeVariable air volumeLaboratoryVentilation and air conditioning system
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