HVAC DESIGN AND CONSULTING FOR CLEANROOM
HVAC DESIGN FOR CRITICAL AND STERILS ENVIROMENTS
STT ENGINEERING based in Milan operates in the design of HVAC systems for cleanrooms in the pharmaceutical, life sciences, electronics, food, aerospace, cosmetics sectors, or HVAC systems for all those critical and sterile environments where it is required both a control of particle contamination and of fixed and constant temperature and humidity values (microclimate) within the same clean room.
The cleanroom HVAC system project includes the design of mechanical air conditioning and treatment system for thermal and cooling energy generation systems, piping and substations, temperature control, air handling unit and fluid distribution unit design. All at the service of the cleanroom and the auxiliary premises. The design of the HVAC systems for the cleanroom is developed both with BIM technology and with the use, to support the design, of accurate fluid dynamic CFD simulations.
The project is performed in accordance with the main standards recognized worldwide (ISO 14644 and GMP in the pharmaceutical and health care sector) as well as in compliance with the class of cleanliness and sterility required by the customer in order to meet production specifications. The HVAC system design for a cleanroom plays a key role in achieving the expected sterility class specifications. The HVAC systems for the cleanroom also have the important function of maintaining, within the cleanroom itself, pressure, temperature and relative humidity values compatible both for operator comfort and for not altering the product or characteristics devices that are produced or processed inside the clean room.
The design of HVAC systems for a cleanroom is certainly a specialized activity that must be carried out by a team of engineers specializing in the HVAC sector with transversal skills ranging from mechanical engineering to pharmaceuticals up to fluid dynamics.
SERVICES RELATED TO HVAC FOR CLEANROOM
BASIC ENGINEERING FOR HVAC CLEANROOM
The basic HVAC systems design for the cleanroom, allows defining the most important features of HVAC systems to ensure the ISO class of GMP contamination and sterility. In this phase the main system components are defined, the fluid distribution lines, the air handling units and the pressure gradients.
EXECUTIVE DESIGN HVAC CLEANROOM
The executive design of the cleanroom HVAC system allows, on the basis of the basic engineering, to produce documents that allow the construction of the HVAC plants to serve the cleanroom. In these papers all the necessary specifications for the construction of the clean room are reported.
BIM DESIGN HVAC CLEANROOM
The BIM (building integrated model) design allows for the creation of a coordinated project between HVAC systems and all civil and construction works in a cleanroom. BIM technology allows to obtain three-dimensional views, sections, construction details and detailed engineering.
CFD SIMULATIONS FOR HVAC CLEANROOM
The cleanrrom environments, operating requiring high air flow. Furthermore, the study of air fluids is essential in order to avoid stagnation zones, predict air speed, simulate the concentration concentration of solid and gaseous contaminants within the clean room itself. CFD simulations are a very useful tool in the design of HVAC systems serving a cleanroom.
CONSULTING FOR CLEANROOM AND STERILE AREA
In addition to the cleanroom HVAC system design activity, we deal with consulting activities in the HVAC sector in a cleanroom environment or critical environments with controlled contamination in general. These activities concern both possible problems in the functioning of the HVAC system and optimization of the HVAC system project itself. Another consultancy activity concerns assistance during tendering or work supervision.
COMMISSIONINING HVAC CLEANROOM
The HVAC commissioning and qualification service of a cleanroom, concerns the on-site verification of the actual performance of the cleanroom, both at rest and in operational. Furthermore, in this phase, it is checked whether all the plant design specifications are met. Last but not least, the TAB (testing, adjusting and balancing) activities of the HVAC plant are carried out.
THE HVAC PROJECT FOR STERILE HEALTH AND HEALTH CARE FACILITIES
The cleanrooms, in their declination of sterile environments with controlled contamination, are particularly present in health and hospital facilities. Operating rooms are an example of these environments. Operating theaters generally provide for classes of contamination, in accordance with ISO 14644, from ISO 8 to ISO 5 for more invasive or higher risk types of operations.
The sterilization centers, laboratories, intensive care units are other environments, always linked to the hospital sector, where high sterility is required, temperature and relative humidity control and pressurization levels of the rooms. Also in these environments the CFD HVAC analysis (fluid dynamics simulations) find a remarkable application.
ANALISI E SIMULAZIONI CFD A SERVIZIO DELLE CLEANROOM
The cleanroom sector is among those that most require, for its usefulness, the use of CFD HVAC (computational fluid dynamic) simulations. The study of air flows in the design phase and verification during operation allows HVAC systems to be optimized, avoiding over-sizing the systems themselves, reducing stagnant areas not affected by air flows, assessing the trend of particle concentration and gas inside the cleanroom. Every time we design the HVAC systems for a cleanroom service, we always support the CFD studio in order to guarantee a better result for our client.
We employ highly performing CFD software, so as to provide accurate and reliable operating results. the simulation results are provided in detailed reports.
EFFICIENZA ENERGETICA IN CLEANROOM – IL PROGETTO DEGLI IMPIATNI HVAC
Authoritative international research has shown that the operating cost of a cleanroom is approximately 60% -70% related to the operation of HVAC systems serving the cleanroom itself. This cost includes the energy consumption that goes from the thermal and cooling energy generation systems to the ventilation systems of the air treatment units. Cost containment, increasingly requested by the manufacturers together with a greater awareness of environmental respect, now requires that the HVAC system design for the cleanroom service must allow the achievement of adequate energy efficiency conditions. More and more often the HVAC system design for the cleanroom includes the use of heat recovery systems, air flow modulations, cogeneration and trigeneration systems, use of renewable energies.
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