ESBE LINEAR PRODUCTS IN TOP RENOVATED SWIMMING ARENA
2024-04-04
Clean water, just the right temperature, please!
At Töllstorpshallen in Gnosjö, there is something for everyone who loves to swim. The popular swimming pool and children's pool were complemented in 2023 with a completely new rehabilitation and relaxation area. The relaxation area offers a cold pool, steam bath, regular sauna, whirlpool, experience shower and more, and the new rehabilitation pool has a height-adjustable bottom. The many pools, plus showers, tap water and heating, require a robust system to function.
Regulatory requirements
Indoor environment requirements are an important cause why swimming arenas use a lot of energy. It is important that a healthy and comfortable indoor environment in swimming arenas can always be ensured. The systems that use the most energy in swimming arenas are water purification and ventilation, and there is great potential for energy saving in this through system control. Firstly, it is demand-based control and coordinated control between the different technical systems that can play a major role, both in terms of reduced energy consumption and improved indoor environment. A lot of energy can also be saved through heat recovery, both from wastewater and from ventilation air.
Water purification
We were guided through the basement where the purification system for the two older pools are located. The wastewater flows down into two separate equalization tanks. The water from the pools is filtered and purified by being pumped through filters with glass blasting sand before it is returned as clean water to the pools. It's separate water systems as it is easier to handle with different temperatures.
"The large pool has approximately 600,000 liters of water and we purify 100 m³/hour. The smaller pool has approximately 50-60,000 liters and then we have a capacity of 45 m³/hour for that purification system. The heating requirement is relatively small as the pools maintain a good return temperature," says Mikael and shows us where one of the ESBE valves is located that is to provide heat when needed
500 square meters of technical space
We continue our walk through the basement's substations to the new facility's technical space of approximately 500 square meters.
Here, the water is purified in the tanks when it is filtered through blasting sand. It then passes through a UV light that kills all organic substances, before it can become bathing water again.
Approximately two to three times a week, a small amount of water in the pools is replaced (approx. 6-12 m³ depending on the size of the pool) with new water.
Water purification equipment for the new pools dominates the space. ESBE linear control valve and actuator complete the purification system which is based on pressure-sand-filters and custom-built equalization tanks.
The rehab pool above and what's underneath it!
The hot water is recycled
In connection with water purification, the heat from the bleed water (the old water) is used to heat the new water.
"We try to utilize all energy in the best way, all excess heat should be reused in the system. It is easy to believe that it takes a lot of energy to keep the pools at the right temperature, but the swimming pool's room temperature is relatively high, and in that manner the water retains its temperature relatively well. It is more difficult to keep the cold in the cold bath," says Mikael.
Excess heat is recycled
The building's district heating system provides the property with both heating and ground heating at the entrance as well as hot water to the newly built part with whirlpool, cold bath and a rehabilitation pool.
The heat exchanger that utilizes the return heat in the large ventilation system is controlled by ESBE's linear actuators and control valves ALB >> and VLA >>
Humidity control presents a significant challenge in swimming pools and spa facilities. Proper ventilation is crucial for regulating humidity levels and maintaining a healthy and comfortable environment. Töllstorps swimming arena has implemented innovative ventilation technologies that prioritize energy efficiency to minimize energy consumption and reduce environmental impact. For example: excess heat from the dehumidification process is recovered and used to heat the rehabilitation pool.
The district heating system that regulates the building's heating and ground heating is equipped with ESBE linear actuators and control valves ALB >> and VLE >>
Gnosjö Rörledningsaffär, the contractor responsible for heating and sanitation, installed ESBE shunts to control the heat exchanger that utilizes the return heat in the large ventilation system.
Other contractors involved in the project:
• Cretec i Gislaved: Ventilation contractor
• Swimtec: Supplied and installed the bathing water treatment system for the new therapy/relaxation area
• Malmsten Entreprenad: Installed an Advanced intermediate floor and a lifting plan in a stainless steel pool
Thank you Mikael for the tour
And for sharing all the exciting information about Töllstorps Simhall's impressive facilities.
We look forward to taking a dip in the whirlpool soon!
Related links
ESBE Linear Actuators >>
ESBE Linear Valves >>
Töllstorpshallen >>