Passive shelter, semi-passive shelter, active shelter
Equipment housing with walk-in facilty.
Equipment housing with walk-in facilty.
This infrastructure, used to house any kind of equipment, represents Celantel’s Core Business which includes: shelters, containers, cabinets, racks and other special items.
Celantel, in particular, provides all the possible housing solutions, from the traditionals with active conditioning, to the “patented” passive ones or as well to those with different hybrid solutions including active / passive or simple ventilated typology.
The passive self-conditioning shelter is certainly Celantel’s best product offered to the Market.
The idea of passive shelter comes from Celantel and represents the basic principle of a series of industrial patents which boasts attempts at imitation, adequately defended and protected.
The one of 2002, in particular, is based on the principle of day/night heat exchange of the heat produced by the equipment and accumulated in adequate thermal capacities during the day that is, subsequently, disposed of externally during the night.
In manufacturing this, with innovative solutions and improvements, Celantel’s aim was to increase the overall thermodynamic efficiency, always respecting the original principles as regards to the absence of maintenance, energy-saving etc.
When the air conditioning does not depend on the energy supply – ZERO ENERGY
It is characterized by:
The related application concerns remote stations, or any requiring no maintenance.
In order to make the air conditioning independent from any energy source, it is unavoidable to draw the energy made available by the environmental climatic conditions.
The passive system uses the thermal energy of the night, moving it and collecting it inside and then releasing it for 24 hours.
Celantel’s patented device has two peculiarities: it is perfectly sealed so that it doesn’t need any replacement during the operational stage and it is modular type. A fluid is employed as thermal vector and as store function.
Each passive shelter is divided into:
The first one controls the internal thermal energy and, thanks to an adequate accordion shape and a functional position to the thermal flows, allows the expected heat absorption. In some circumstances, the store function is integrated with the addition of specific products, e.g. phase transition materials (PCM).
The second, therefore, is typically on the top of the shelter or closet, so that it is easily cleaned and is configured to maximise heat exchange through conduction to the environment and through radiation to outer space, introducing in this way a sub effect of night cooling.
The passively cooled shelter follows the operational procedures of a diode (thermal), allowing the internal heat transfer towards the external and not vice versa.
The calculation method is essentially based on the difference between the minimum external night temperature and the maximum inside temperature, allowed by the electronic devices.
This calculation uses a complex algorithm developed by Celantel.
It could depend on: specific temperatures of the places taken into consideration, certified by the global databases, or project requirements and it allows an accurate evaluation of all the manufacturing parameters of the passively cooled shelter, providing the graphics of the performance expectations.
When the air conditioning partially depends on the energy supply – ENERGY SAVING-
The related application refers to high heat dissipation stations, including all the passive shelter features and ensuring a limited energy consumption and maintenance. There are three subcategories of product, suitable for fixed or mobile stations.
This system is derived from the passive shelter with water circulation, facilitated by a pump and an internal or external forced ventilation so to increase the heat exchange, allowing as well high heat dissipations and, finally, maintaining features such as: low maintenance and consumption.
Passive cooling system supported by an auxiliary air conditioner or chiller, activated only during the warmer months of the year.
Made up of a three-way heat exchanger, it is equipped with storage and forced ventilation. It ensures the temperature control with a low power consumption. This compact size module allows an optimization of the internal spaces of the shelter and the possible installation on the existing units, already at site, so to replace the traditional air conditioning.
When the air conditioning uses electrically activated systems and/or devices in order to allow the air inlet / outlet.
Manufactured with unframed composite panels shelter body (Fiberglass or Aluminum) or with framed container type steel structures.
There are two different kind of housings:
The Shelter or cabinet body consists of an original structure, without metal frame, always composed of six monolithic multilayer panels, created through a pressing and temperature controlled process.
Each panel has two external Glass Fiber Reinforced Plastic (GRP) or Metal “skins” and an extruded panels heart of expanded polystyrene or mineral wool.