- with precision air conditioning refrigeration unit
Computer room air conditioning for different refrigeration device, its design requirements will also be different.
In general building air conditioning, refrigerating capacity are considered in the choice of the working condition of the steady state, namely, keep the temperature of the air conditioning room to maintain hope;
And car air conditioning, the dynamic performance is very important indicators, need to be considered at a high temperature, temperature drop to want the refrigerating capacity at this moment need to is much bigger than the refrigerating capacity of the steady-state operation need.
Refrigeration system design, therefore, must fully consider the difference between these specific working conditions and performance requirements.
Refrigeration process needs to consume large amounts of energy, selecting rational consumption form of energy is refrigeration system design needs to be addressed.
Shall be provided with cold places according to the actual situation of energy, adjust measures to local conditions, choose different cooling methods.
In the place of power supply design of air conditioning system, should not be commonly use electric compression refrigeration system;
When plenty of fuel or cheap heat cooling situations, especially with waste heat, waste heat can be used, should first consider the heat driven refrigerating method, absorption and steam jet refrigeration.
For large span room, computer room air conditioning to wind system has also should have with floor board air supply duct or condole top return air, not only has good uniformity of the temperature field and velocity field, also good energy saving effect.
In addition to some relatively high density cabinet may have 20 kw or some 25 kilowatts so can take some cold source of air supply way directly.
Another also can use some special device, installed on the let it blow.
During the spring and autumn winter or parts of, outdoor air temperature is low, the engine room of indoor air temperature is high, still need to be cooling.
Without walls, especially outside the window in the room, it is due to the equipment in the engine room of heat release is not way to send out to outdoor, indoor still needs to be cooling.
Because the cooling load is small, cold mechanism cold coefficient is low, the energy consumption is large, if open an unreasonable cooler cooling.
Nature is actually a good cold source, not only do not need to obtain energy consumption, and supply adequate, belongs to the green cold source.
Natural cooling means not to use cooling equipment or air compressor cooling technology.
Available amount of natural cooling depends on the local climate and natural cooling range is about 100 hours a year to more than 8000 hours.
Two of the most common natural cooling way is groundwater or surface water cooling and outdoor air cooling.
Rooms dedicated air-conditioning, air-conditioning refrigeration, heating and dehumidification, humidification four big functions.
Four big functions perfect unifies in together, plus its PLC intelligent controller, can automatically switch machine, completely automated, can satisfy the requirement of the constant temperature and humidity room environment.
Room air conditioners used the high accuracy of measurement and control technology of international, humidity measurement and control the range of 50% to 70% RH, temperature measurement and control in the range of 12 to 30 degrees Celsius.
Installed in the computer room air conditioning air volume is very big, the equipment is heat transfer by conduction, radiation in the machine room, equipment heat concentrated intensive area, in order to make uniform in each area of the room temperature and humidity, and control within the scope allowed base and volatility, you need to have bigger air volume will be more than the heat away.