iACS - Experts in AHU Controls

The data center air-conditioning solution with the highest energy efficiency and lowest environmental impact The graph illustrates the climatic conditions in which the evaporative cooling, in case combined with a heat recovery unit, gives the opportunity to reach the temperature and humidity conditions as recommended bt ASHRAE and reduces significantly the mechanical cooling energy consumption. The green area (FC) represents the conditions in which it is possible to use the free cooling, the adjacent area (FC+MIX) describes the conditions in which it is necessary to mix the external air with the return air in order to keep the temperature under control. The area below (FC+MIX+HUMIDIFICATION) needs an additional adiabatic humidification to reach the minimum humidity set by ASHRAE. The blue area (DEC) identifies the initial external air conditions, suitable to reach the temperature set point with direct evaporative cooling DEC only! The yellow area (IEC) represents indir...

Data center air-conditioning Data center air-conditioning is essential for the correct operation of Information Technology equipment: processing and storage devices produce considerable heat that needs to be removed in order to maintain optimum operating conditions. Worldwide data center power consumption is estimated to be 30GW, accounting for around 1.5% of the earth's total electricity usage: as a result of this astonishing level of energy consumption, energy saving solutions are increasingly adopted. Currently the most widely implemented technological solution involves the use of Computer Room Air Conditioners (CRAC) or Close Controls Units (CCU), which cool and where necessary humidify the air in the data center. Continuous technological development in the sector and a constant focus on energy saving are reflected in the evolution of the air-conditioning solutions adopted: from controlling air distribution to installing air-conditioners, near the heat sources, a...

Easy-Lan is the cabling system structured for the integration of the AHU. Thanks to the adaption of the Bus protocol, sensors , valves , actuators , dampers and other elements of the AHU are able to communicate with the microprocessor (Professional series) through a single cable. The connection is made through multi-use splitter with screw fixing connectors. The level of protection from water is IP67 therefore suitable for bad weather. One of the greatest strengths of these products is represented by the testing at the factory. The test with the simulation of the system in operation, limits the problems during the phase of installation and commissioning since the package is a straight forward plug and play solution. The same test is subjected to each cable eliminating therefore the possibility of error in the wiring phase and ensuring fast and safe cabling. A single cable With Easy-Lan there is no need of extra cables. Each element is identified with the socket to...

Designed specifically to offer affordable easy to install heat recovery to the residential refurbishment market, the Lo-Carbon Tempra   was the UK’s first single room heat recovery unit that can be retrofitted through a 100mm diameter hole in the wall. This allows inefficient extract fans to be easily replaced with a discreet, low energy, continuously running alternative that offers up to 84% heat recovery . Single room heat recovery makes heat recovery more accessible and affordable for existing homes and so offers huge potential carbon reductions for both private and social housing.” The innovative design of the unit enables standard bathroom, kitchen, toilet or utility room fans to be easily changed for a Tempra without the need to make the hole any larger, saving substantially on installation time and cost. Now available with two different spigot sizes the Tempra can be fitted through wall depths of up to 320mm, or up to 460mm. Central to the Tempra’s compact footprint...

Integrating, communicating, controlling. The networking of building technology system is a good way to increase convenience, safety and security while cutting energy consumption and optimising operations in new plants as well as with retrofitting or renovation. Modbus solutions from Belimo permit cost-efficient and easy-to-manage integration of HVAC air/water final controlling elements and of sensors. Actuators for Modbus The interface installed in the Modbus actuators enables the direct connection of HVAC final controlling elements to Modbus RTU. In addition to such communications parameters as address, baud rate and transmission format, other actuator parameters such as running time or scaling can also be set with the Service tool ZTH-GEN . One sensor can also be connected to each Modbus actuator. This can be a passive or active sensor or a switching contact. This makes conventional sensors communications-capable in a very simple fashion. Gateway MP to Modbus The ...

Compressed air humidifiers are the ideal humidification solution whenever a compressed air supply is available, as is the case in many industrial applications, even if humidification systems are often fitted with a dedicated compressor. The humidifier essentially consists of a cabinet fitted with electronic controller that, using two independent connection pipe networks, supplies the spray nozzles with compressed air and water at the ideal pressure for instant operating conditions. The units can be installed inside an AHU or directly in the room where humidity needs to be controlled. The greatest advantage of these atomisers is the minute dimensions of the droplets produced and their thorough mixing in the compressor air that, due to its speed, distributes the aerosol in the room and consequently allows quick absorption. These units can therefore be readily used for direct cooling in rooms, and are ideal for the textile industry, wood and paper processing, and storerooms, wh...

The " infrared universale " series is a range of instruments for controlling the temperature, pressure and humidity values in the air-conditioning, refrigeration and heating units. They can however also be used in other contexts, as the voltage or current inputs can support various different types of sensors. In addition, the PT100 probes or thermocouples have an operating range up to 800 °C and can comfortably manage common oven or furnace temperature control processes. The wide range of models can satisfy all requirements: The models are divided into two families :  the first with temperature only inputs, and consequently suitable for temperature control in HVAC/R and/or generic applications that require a thermostat in the range –50T150 °C; the second with universal inputs (NTC, NTC-HT, PTC, PT1000, PT100, TC J/K, voltage and current). The following sensors can be connected to the “ temperature only ” models: • NTC with range –50T90 °C • NTC-HT with r...