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The fan-powered variable air volume terminal, also classified as a throttling-type terminal, integrates a fan into the basic single-duct configuration. Based on the distinct arrangement between the fan and the primary air damper, it is categorized into series-type (FPS) and parallel-type (FPP). Series-type The fan and the primary air damper are arranged in series, where the AHU-treated primary air passes through both the primary air damper and the fan. The fan operates contin

The Royal Service Variable Air Volume (VAV) diffuser is an independent temperature control unit that offers advantages such as low pressure drop, optimized airflow distribution, and diverse configurations. It provides an effective solution to uneven heating and cooling issues encountered in HVAC projects. Case Study 1 Project：Office Room Renovation Project Description： The original office space was converted into conference rooms in this retrofit project, utilizing the existi

In the variable air volume air conditioning system, the single duct variable air volume terminal device (VAV-BOX) is one of the most common variable air volume terminal devices. Its main function is to automatically adjust the supply air volume according to the temperature requirements of the room, so that the indoor temperature is kept within the set range to ensure a constant and comfortable space environment. How does it achieve precise air supply? What are its specific st