Case Study · Leisure Hotel · AHU Manufacturing
Warner Leisure Hotel
Gunton Hall
AHU Manufacturing
Warner Hotel Group are famous for their resort hotels located across the UK. Each is located in a beautiful setting and includes full leisure facilities for guests, usually with a full size indoor swimming pool. To maintain a pool hall at the correct temperature and humidity requires an air-handling unit (AHU) specifically designed for the size of pool and its surroundings. The existing AHU at Gunton Hall had come to the end of its useful life and needed replacing, so we were approached to investigate the existing set-up and then design, manufacture, and install a new air handling unit complete with fitted controls.
Project Overview
In reviewing the existing AHU against our design criteria, it was felt that the air volumes needed to be increased, particularly to cope with the fully glazed structure of the pool hall itself and reduce condensation on the glazing. So the new AHU was designed to provide additional air to meet this need.
What We Did
Design & AHU Specification
The new AHU incorporated a high-efficiency plate heat exchanger to recover the maximum energy possible from the exhausted air and remove moisture at all times of the year. To save additional energy during low occupancy periods, the unit includes both temperature and humidity sensors and also a recirculation damper so that air can be returned directly when the humidity is low, thus enhancing energy saving potential.
Tailor-Made AHU Construction
Because of the limited space requirements available in the existing plantroom, the new AHU had to be tailor-made so as to fit, particularly as it was larger than the original. The unit also had to be manufactured to be highly resistant against corrosion and so was manufactured from plastic coated galvanised steel panels, all double-skinned and insulated within a 50mm aluminium frame.
Flatpack Build, Ductwork & Controls
Because of the reduced access into the plantroom, the unit had to be provided in flatpack form. The new unit panels were moved into the plantroom where our engineers then re-built it. The connections onto the existing ductwork had to be modified and new lagging fitted. The LPHW heating pipework had to be re-routed and re-connected with a new 3-port control valve. The unit was fitted and pre-wired with an on-board Trend control panel, commissioned, and air volumes measured and set to the increased volume.
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