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<span style="font-weight: bold;">HMX cooling solutions boosts employee efficiency.</span> <p></p> <p> Despite the hot and dry climate of Ahmedabad, the team at TeraSpin's office at Sari, Ahmedabad, is fresh and energetic throughout the day. What keeps everyone energetic the whole day? No, it's not just cooling - it's cooling with clean, fresh air, using HMX's IDEC (Indirect Direct Evaporative Cooling) together with FAAC (hybrid air-conditioner) systems.</p> <p> <span style="font-weight: bold;">Challenge</span><br /> TeraSpin's office building accounts for about 50 per cent of the total cooling load of its facility. The challenge was to bring down the cooling cost significantly, while maintaining a comfortable ambience with 25¦C temperature all year round, and with high indoor air quality.</p> <p> <span style="font-weight: bold;">Solution</span><br /> Based on a heat load calculations, it was found that approximately 20,000 CFM of air was required in the office building during summer and approximately 20 TR and 10,000 CFM cooling for monsoon was required in recirculation mode for maintaining a comfortable ambience. Keeping these numbers in mind, two systems were installed at TeraSpin's office. The HMX-Ambiator is a two stage evaporative cooler. It is commonly known as IDEC technology. The HMX-FAAC combines indirect direct evaporative cooling and refrigerated air conditioning, and can provide comfort in all seasons.</p> <p> <span style="font-weight: bold;">How do the systems operate?</span><br /> During the summer, IDEC alone is sufficient to maintain a comfortable environment. A total of 20,000 CFM of air is pumped in the office with the HMX- Ambiator and the HMX-FAAC; and 70 per cent is exhausted out, maintaining comfortable working conditions through about a nine-month long period.</p> <p>During the three months of the monsoons, the IDEC modes for both these systems along with the exhaust systems in the building are shut down and the cooling coil installed in the FAAC unit comes into play. The 10,000 CFM FAAC unit pumps in exclusively cooled and dehumidified air into the space working purely in recirculation mode for maintaining temperature and RH conditions. Approximately 10 per cent of the total air quantity is supplied as fresh air to maintain the desired oxygen level inside the room and the remaining fresh air is ex-filtrated through door openings.</p> <p>The performance of the entire site in terms of energy consumed, water usage, and indoor air quality is monitored through the IoT-based remote monitoring solution from EcoAxis (a business unit of ATE).</p> <p> <span style="font-weight: bold;">Result</span><br /> Tables 2 and 3 show the ambient and office temperature reading recorded on a typical hot day in April 2015 and on a monsoon day when the RH is high in July 2015. The results show that the HMX systems had maintained comfortable temperature conditions with 100 per cent fresh air with significant saving in energy consumption.</p> <p> <span style="font-weight: bold;">Customer quote</span><br /> The management is happy with the HMX systems. &quot;The biggest advantage is that our employees feel energetic throughout the day and this has definitely improved their efficiency and productivity&quot; says, KP Singh, Director, responsible for TeraSpin operations.</p>