System Design
Pump System
Pumping systems in complex networks, it is difficult to optimize and may eventually prove to be a significant heat load on the system of inefficient operation. Consider combining variable speed drives with only primary water cycles with two valves per end-use cooling coils. Principal-only pump strategy supplies chilled water directly from the chilled water pump terminal equipment, and not through a hierarchical secondary or even tertiary) loop to control the pressure. Modern refrigerators much more tolerant of a variable water flow and temperature at the inlet. In the case of end-use of the funds is very diverse, main pump fixed speed and variable speed pump circuit with tie-line near the chiller can be considered.
Air Conditioning System - Some New Concepts
Two relatively new concepts for energy savings in air conditioning systems, addressing supply system of the air and air temperature discussed here. Both systems have the potential to save energy, but should be applied very carefully, given the location of specific issues.
The clandestine supply Air through the System Warmer supply Air
Most air conditioning systems to provide cool air about 13C using head over to the supply air duct.
Air flow, as a rule, close to about 400 cfm for TR for comfort air conditioning.
Under the floor of the air through the floor under the Plenum is a new concept that has the potential to save energy. In this design the duct is eliminated, and the air is the Plenum of the plinth. Air outlets with control near jobs that can be controlled based on the individual requirements. Because the air is very close to the user, the supply air temperature settings can be raised to about 17C 20 C. the pick-up of heat and rise in the return air Plenum above the ceiling and return at a temperature of about 25C to 30C. This system can work and in dry weather, or in situations where high humidity is required or can be tolerated.
Saving energy reduces hmm, thanks to the higher supply air temperature settings. The lack of pipelines leading to a decrease in the static pressure requirements and, hence, reduces the fan power. There is also the possibility of exploitation of the lower air flow rates in this system.
Above the Ceiling supply Air with the help of System of Cold Air System
In a conventional air conditioning system (SAS), the supply air temperature is about 13C for comfort air conditioning. It gives a temperature differential 11C between room temperature for 24C and fresh air. In the cold air systems (CAS), the supply air temperature will be around 7C room temperature 25,6C, which, as will be shown later, is acceptable in the CAS, yielding a temperature drop of 18.6C. Accordingly, in CAS, the dry air flow will be only about 50-60% of the cost of the CAC for these temperatures. Cold air distribution air supply systems in 7C instead of the usual 13C, reducing air flow, air handling unit, sizes and dimensions of the duct.
Brine enters the cooling coil at 1.5 C (instead of chilled water 7 C). Thus, the air that leaves the coil, maybe around 7C. the relative humidity in the CAS may be higher (about 35%), that allows to work at higher room temperature for comfort level.
In a carefully designed system CAS can save energy due to the reduction of fluid handling the quantity and lower fan and pumping power...
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Chillers