CASE STUDIES
gy E
ven when it is well below zero outside the well-used gyms at South N orfolk District Council’s Wymondham Leisure Centre have to be c ooled, to keep those using the exercise stations as comfortable as possible. At the same time its meetings rooms/wellness suites need to be heated. T o meet this challenge efficiently and cost effectively, main air conditioning contractor Adcock Refrigeration & Air Conditioning opted for heat recovery VRF from Gree UK.
T he Gree GMV5 full heat recovery VRF equipment installed comprised t hree outdoor modules with a rated cooling capacity of 101kW serving three 22kW and three 14kW indoor ducted units. A 2.3kW Gree single split was also installed to serve the IT room. Each indoor unit has an individual wall mounted room controller and there is a touchscreen smart zone central controller covering the total system.
The installation was part of a major refu rbishment project aimed at enlarging and modernising the leisu re centre.
S ays Matt Allen, fitness manager: “The dry side of the centre was built in 1993, with the swimming pool added five years later.
“However, Wymondham has grown, so the centre was too small to cope with the demand, so it needed enlarging and the facilities needed to match modern expectations.”
Previously, the exercise gym had just 45 stations in one studio. This has now grown to 100 stations in three studios. T
Tw n three studios. Two are high i mpact f acil ities, while the
third is used for meeting and low impact exercises such as Pilates and yoga. All these, plus a new weights room, are now cooled and heated by Gree equipment. Says Matt Allen: “None of what we offer would work without efficient air conditioning. Participants get very hot when they exercise, so we need to provide an environment that is both cool and not stuffy.
“For the wellness classes, such as Pilates, we need to be able to heat the rooms to a comfortable temperatu re, to reduce the chance of strains in these stretch-based classes.
“So far we ha ve been extremely satisfied with the operation and the environment created and the controls are very user friendly. As with all installations, there ha ve been teething troubles, but Adcock and Gree have sorted them out very quickly.”
The installation was specified by BSD consulting engineers and main M&E contractor Sotham Engineering, which, to sa ve costs on the overall contract, asked Adcock if it could achieve sa vings without reducing performance. Says Mike Burk, Adcock’s sales and applications engineer: “We asked all the main manufacturers to quote and Gree was by far the most competitive. Its engineers were also extremely helpful du ring and after the installation and we gave a joint site demo on handover to the centre personnel.
“Because of the gymnasium, the hea viest load all year round is always going to be on cooling; even when it’s -5ºC below outside. This has meant there was a real challenge getting the balance right for heat recovery equipment, which will recover up to 75% of excess heat. Gree has helped us solve the problem efficiently, with the aid of innovative programming which heats some of the non-gym rooms very early in the morning when they are empty, to help dissipate the excess heat for short periods.”
www.acr-news.com June 2017 57 Ecomesh
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