Energy-Efficient, Versatile and Reliable Indirect Evaporative Cooling
DAMA based systems are currently cooling more than 20 million sq ft with 100 million CFM deployed in 10+ countries
What is DAMA and how does it work?
The core technology of HMX is the next-generation DAMA heat exchanger. It is highly optimized for Indirect Evaporative Cooling. DAMA stands for ’Dry Air and Moist Air’. DAMA is a crossflow, plate-type polymeric exchanger.
DAMA has warm primary air stream flowing in the dry channels. The secondary air stream flows on the wet channels of DAMA. The primary (supply) air stream exchanges heat through the thin separating wall with a thin film of water on the wet side. The heat rejected by the primary air enables evaporation of the thin water film, and in the process, the primary air is cooled without the addition of moisture. The secondary (exhaust) air stream is in direct contact with the water film and carries away the moisture. Thus, it becomes humid and is exhausted. Thus Indirect Evaporative Cooling in DAMA is purely a sensible cooling process.
DAMA helps to save energy
DAMA (Indirect Evaporative Cooling) based systems are ideal to cool both industrial and commercial buildings.
DAMA is designed to provide significant energy savings in cooling. In some cases, using DAMA (Indirect Evaporative Cooling) with a conventional or Direct Evaporative Cooling pad in a compressor-less system (Indirect Direct Evaporative Cooling) can completely replace air-conditioning systems with as little as 40% of the energy consumed by air-conditioning alone.
When used in conjunction with a direct expansion or chilled water cooling coil, the use of DAMA (Indirect Evaporative Cooling) reduces the cooling load requirements required to pre-cool outdoor air (Indirect Evaporative Cooling based TFA/Hybrid AHU).
An Indirect Evaporative Cooling based TFA can save up to 26% energy when compared with a conventional TFA.
An Indirect Evaporative Cooling based Hybrid AHU can save up to 24% energy when compared with a conventional AHU even while supplying 3x fresh to air-conditioned spaces.
Features of DAMA
- High-efficiency plate-type polymeric heat exchanger
- Optimized for Indirect Evaporative Cooling
- High reliability and low leakage between air streams
- Unique design ensures low fouling and consistent performance
- Modular in design and scalable
FAQ
What is DAMA, and how does it work?
DAMA is a crossflow, air-to-air, plate-type polymer heat exchanger. It works on sensible cooling psychrometric process. The passing primary air flows in the horizontal dry passage and it looses its heat to the secondary air which is flowing in the adjacent wet passage. The primary air gets cooled sensibly, i.e. reduction is dry bulb temperature, reduction is wet bulb temperature, reduction is enthalpy of the air.
How energy-efficient is the DAMA-based system compared to traditional systems?
DAMA based IDEC systems saves 40% of the energy, when it is compared with the conventional refrigeration based air-conditioning systems. When DAMA is integrated with Hybrid AHUs or TFAs, they can save up to 20–25% energy compared to traditional systems and based on the geographical location or atmospheric conditions.
What types of buildings are suitable for DAMA-based cooling systems?
DAMA systems are ideal for both industrial and commercial buildings, especially in areas that require fresh air ventilation. They are scalable and modular, making them suitable for new constructions as well as retrofits.
How does DAMA contribute to energy savings in cooling systems?
DAMA reduces cooling loads by pre-cooling the outdoor air by using indirect evaporative cooling.
Can DAMA systems replace traditional air-conditioning systems?
Yes, some of the application of air-conditioning (AC) system can be replaced by the Indirect Direct Evaporative Cooling (IDEC).
It does not exactly replaces the conventional AC system, but it can complement to the conventional AC system by pre-cooling of fresh air which goes in AC system.
It can replaces the ai handling unit (AHU) of conventional system.
What are the unique design features of DAMA?
DAMA is air-to-air, cross flow, plate-type polymeric heat exchanger. It is corrosion free, light weight. The efficiency is from 50% to 80%, based on the wet bulb depression, 5 to 14 Deg C and above respectively.
What is the coverage area and capacity of DAMA-based systems?
DAMA based systems are currently cooling more than 20 million sq. ft with 200 million CFM deployed in 10+ countries.
Is DAMA-based cooling suitable for humid climates?
Yes, DAMA can perform efficiently in warm and humid regions by using only Indirect Evaporative Cooling
What maintenance requirements do DAMA systems have?
Hydro-pressure washing should be carried out weekly, and formic acid cleaning should be done annually. The incoming water to the DAMA must be clean and sediment-free, with TDS below 600 PPM and hardness below 100 PPM
How does DAMA support sustainable cooling?
DAMA supports sustainability by reducing energy consumption, eliminating refrigerants, improving indoor air quality, and lowering carbon emissions. It is certified as a Green Product and contributes to healthier indoor environments.
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