Kunming Medical College data center air conditioning energy analysis (chart) – a
1, Overview Monitoring the data center through the long field data found that electricity accounts for the entire data center air conditioning marine source of Kunming Medical College of the total data center electricity consumption by about 45%, there is a lot of saving space. Network Information Center data center to ensure the temperature in line with the network equipment and servers, storage equipment, subject to the normal operational requirements, should a reasonable and effective to re-planning, reduce air conditioning power consumption, reducing energy waste. Ethylene glycol is a new energy-saving air-conditioning developed a green, environmentally friendly new products, significant energy savings, replace the original air conditioning in the winter period to reduce the source of Kunming Medical College of sea power consumption, save money, result in higher quality of network services.
2, using ethylene glycol solution as refrigerant for cooling the inner region of the working principle
All air systems, low outdoor temperature in winter time, the use Cooling tower Within the area to direct cooling of the air conditioning is not easy to achieve. At this point, you can be outside cold air as cold source, with a glycol solution as refrigerant, the outdoor room into a natural cooling source within the zone to the cooling. Outside the area need to Heating And cooling to the inner zone, close Chiller Group, continues to use Boiler Or city water as heat source to the outer zone heating.
Figure 1: Schematic glycol air conditioning work
Within the district cooling to the working principle of above Figure 1. Plate installed in the outdoor Heat exchanger By Fans The cold air into the outdoor heat exchanger, glycol solution and outdoor cold air in the plate heat exchanger for heat exchange. Ethylene glycol solution is cooled into the inner zone of the air conditioning units, in units with mixed air (new, return air mixture of air) for heat exchange, mixing the air is cooled, the temperature decrease within the district after entering the room, to within District cooling the room. Glycol solution temperature to return to the outdoor heat exchanger, the cold air and the outdoor heat exchange, temperature decreased and then continue to cycle. This approach often used in heat exchanger heat recovery system. Glycol and high-temperature exhaust heat exchange, temperature, the new style cabinet, to the fresh air preheating. Thus, the recovery of exhaust heat to the fresh air in the heat, save energy, save operating costs.
This will glycol solution as refrigerant, the introduction of outdoor cold air in the cooling capacity to cooling means within the area is a very energy efficient air conditioning. Just installed a plate in the outdoor heat exchanger, running, cold water unit closed, only open the fan and air conditioning units will be able to introduce natural cooling source for cooling within the area, saving energy, reducing operating costs. However, in the cold outside to use within the district cooling process, the cold air to heat exchange with the ethylene glycol, ethylene glycol and then mixed the air to heat exchange, after two heat exchange, the cooling loss greater , heat transfer efficiency is not high, usually less than 60%.
3, Energy Saving Analysis Kunming Medical College of sea resources meet their own data center transformation conditions Chunlan Air Conditioner 60kW engine room 50, we used ethylene glycol Air conditioning is a day plus Central air conditioning TGSD, part of the technical parameters comparison table see table 1 below:
Table 1 Chunlan Precision Air Conditioning and days plus central air conditioning part of the technical parameters of ethylene glycol comparison table
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