Case Study · Leisure Hotel · Ventilation Troubleshooting
Forest of Arden
Swimming Pool
Ventilation Troubleshooting
The project involved the validation and surveying of the Air-Handling Unit (AHU) serving the swimming pool hall. The AHU, installed three years ago, was responsible for supplying and extracting air to maintain a temperature of approximately 31°C. However, the client reported that the maximum temperature achieved since the installation of the AHU was only around 24°C.
Project Overview
The investigation covered various aspects of the installation, including air volumes, temperatures, ductwork layout, and the air distribution system. The case study highlighted the issues affecting the swimming pool hall's air temperature and proposed a range of measures to address them.
Issues & Improvements
Thermal Imaging & Performance Assessment
The AHU, installed three years prior, was unable to achieve the required pool hall temperature of 31°C, reaching only 24°C. BVS conducted a full validation survey covering air volumes, temperatures, ductwork layout, and the air distribution system using thermal imaging to identify heat loss and airflow deficiencies.
Fan, Baffle & Access Modifications
The fan was relocated on its bulkhead away from the heating coil to improve airflow. A baffle was installed after the heating coil to distribute air more evenly. The supply fan access door was swapped with the service door to improve maintenance access, and a mesh guard was fitted on the silencer inlet to prevent vermin ingress.
Ductwork Leak Repairs
The existing galvanised ductwork, around 30 years old, showed significant leaks resulting in pressure drops and air loss. High-level slot diffusers used for air distribution were also found to be inadequate, with velocities measuring around 1m/s, insufficient for effectively moving warm air downwards.
Control Panel & Diffuser Upgrades
The keypad on the existing control panel was replaced to enable higher air volume operation. The linear slot diffusers were modified to improve velocity and directional airflow. By improving AHU performance, rectifying ductwork leaks, and enhancing air distribution, the desired pool hall temperature was achieved.
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