SELECTION TIPS FOR AIR-CONDITIONING COOLING SYSTEMS . This is accomplished by utilizing the chiller to cool the water, which in turn is . (DX) systems, the air is cooled with direct exchange of heat with refrigerant passing through the tubes of the finned cooling coil. A basic DX system comprises of a hermetic sealed or open compressor/s .
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Jul 03, 2010· In the indirect system, chilled water or brine from the refrigeration plant is circulated through the cooling coil located in the air handling unit to cool and dehumidify the room air. This type system is known as chilled water (CW) system. chilled water system more power per unit of refrigeration (Kw/tonne) compare to DX system.
Jan 13, 2012· I didn't change anything else (except for some of the settings that reverted back to defaults when I changed the system type). The cooling electrical consumption went from 160,000 kWh (baseline, pkgd single zone) to 1,400,000 kWh (VAV, chilled water). The EIR for the DX equipment is about the same as the EIR for the chiller.
Comparison of DX and Chilled Water HVAC Systems DX (direct expansion) systems: The treated airstream passes through the outside (fin side) of the evaporator coil such that it is directly cooled by the expansion of refrigerant passing through the tubes of the coil. In a direct-expansion (DX…
DX and Chilled Water TMI Climate Solutions' Advanced Hydronics Division is now offering a wide variety of Custom DX & Chilled Water Equipment engineered specific to your unique situation. We manufacture high quality, high performance equipment for new construction and retrofit applications. Types of Systems • Packaged Roof Top Units
Selection Tips For Air-Conditioning Cooling Systems Course Content PART I - HVAC COOLING SYSTEMS . basic HVAC components may be assembled into systems. The most common air-cooling systems are either direct expansion (DX) type or the chilled water type. Both these . (cooling coil). Chilled water systems are further categorized as air-cooled or