Thermal is always a concern especially for heavy loading equipment that will generated massive heat, environment with thermal issue will impact overall performance or even result in system shut down. Rear door heat exchanger provide excellence cooling performance that helps solving common thermal issues in data center. Kenmec thermal solution for datacenter can be divided into two parts: Rear door heat exchanger and cooling distribution unit (CDU).
A. CDU: Chilled water for primary loop that can be supply either from tap water, chiller or existing cooling facilities, this chilled water will flow to plate heat exchanger and performance heat exchange with secondary loop; secondary loop on CDU supply cooling liquid that above dew point to ensure no condensation problem, these cooling liquid will flow through heat source and return to plate heat exchanger.
B. Rear door heat exchanger: Depends on thermal requirement, rear door heat exchanger available in 20KW and 30KW that meet specification of standard cabinet and load capacity on the market. Mainly used in data center, it is an energy-saving thermal solution that helps reduce the PUE below 1.4.
(1) Main structure of CDU
1. AC motor: Maximum working pressure 50psi, maximum flow 360LPM. (LX360)
2. Cooling water impurity filter.
3. Water supply / return line distribution connector.
4. High efficiency plate heat exchanger.
5. Intelligent setting and monitoring panel.
6. Abnormal condition alarm system.
(2) Principle of Action
System fan force cold air into cabinet and bring hot air toward rear door for heat exchange, these exchanged heat will then send to external cooling system (chiller) by chilled water in rear door, thus air temperature after passing through rear door will equal to or less than room temperature.
Heat Conduction Solution Water Cooling Data Center Energy Saving Water Cooling System
【Overview】 Rear Door Heat Exchanger (RDHx) is the optimal cooling design that can realize the dual-cold-aisle technology in data centers. 【Scale】 Standard RDHx has a cooling capacity of 20kW/rack. The advanced RDHx can achieve a maximum of 30kW cooling capacity per rack.There are several choices of RDHx dimensions and we offer a wide range of RDHx models of 42U, 47U, and 52U height or 600mm, 735mm, or 800mm width. 【Features】 It does not occupy the space of data center, and the number of cabinets is maximized. High reliability and simple structure design. No condensation water, no water tray. 【Function】 The hot air that leaves the servers gets in contact with the fins and coil and the coolant absorbs the heat from the hot air immediately. This way the hot air temperature is reduced to the original rack inlet temperature. 【Specification】 According to the difference of the passive/active and power, model No. is divided into RX200 / RX300 / RX216A / RX316A.
【Overview】 Cooling Distribution Unit (CDU) is the smart water cooling management unit. 【Scale】 Designed with only 5U height, it can be easily placed in the standard cabinet of the server to provide water cooling function. At a flow rate of 80 LPM, the maximum cooling capacity is 80 kW. 【Features】 7”color screen Easy installation and no leakage 1+1 backup pump design Water supply temperature: 15°C〜45°C Can be expanded to 100 units Support multiple communication protocols Group control 【Function】 Provides the cooling needs required by water cooling device in the cabinet. 【Specification】 Model No. LS80
【Overview】 Cooling Distribution Unit (CDU) is the smart water cooling management unit. 【Scale】 CDU monitors the room temperature and relative humidity in the data center in real time and it immediately determines the real-time dew point. In case of any abnormal condition which causes the surge in the dew-pint in the data center, CDU will dynamically adjust the secondary supply coolant temperature to 1~2℃ above the dew point in order to make sure no condensation on the surface of the secondary pipework. CDU pumps are specially chosen to have higher flow rate with lower pump head. It has a maximum head of 50 mH2O and the actual operating pressure is only about 20~30 mH2O. Moreover, CDU is high pressure tested at 175 mH2O before shipment so that its pressure resistance is much higher than the maximum pressure that its pumps can generate. 【Features】 Built-in high efficiency heat exchanger to ensure coolant quality. 1+1 spare motor design, low power consumption, no shutdown. Group control. Intelligent monitoring, no condensation inside the data center. 【Function】 Provides water supply temperature for the Cooling Read Door Heat Exchanger above the dew point. 【Specification】 According to different water flow and heat dissipation capacity, model No. is divided into LX360 / LX600 / LX360T / LX600T.
【Overview】 It is a water cooling management unit with intelligent temperature control. 【Scale】 HCDU is equipped with highly efficient refrigeration system. An air-cooled HCDU can save up to 20% of power consumption as compared to typical air-cooled chillers while a water-cooled HCDU can save as more as 40% as compared to typical water-cooled chillers. The equivalent COP of an air-cooled HCDU is 3.74 and that of a water-cooled HCDU can be even higher at 4.76. The power consumption of HCDU is much lower than typical chillers on the market. 【Features】 Monitor and control the operating conditions of the chilled water. Transmit system operating parameters to the Building Management System (BMS) for further integration. Monitor the room temperature and relative humidity in the data center in real time. The power consumption is much lower than typical chillers on the market. 【Function】 Its internal refrigeration system is specially designed so that it can generate cooling water in the range of 15~20℃ under an ambient temperature of 0~45℃. 【Specification】 According to heat dissipation capacity, model No. is divided into HX008A / HX030A / HX040A / HX040L.
【Overview】 iCOLD Rack includes a standard rack with its own water cooling system for standalone operations. 【Scale】 The cooling capacity is 10kW and 6kW per rack respectively. The height of iCOLD Rack can be 42U, 47U, and 52U while the width can be 600mm, 735mm, and 800mm. 【Features】 Standalone operation system of heat dissipation. No external chilled water for cooling. No pipework underneath the raised floor. No special requirement for the rack arrangement with iCOLD Rack inside a datacenter. The rack arrangement is no longer confined by the conventional hot-and-cold aisle containment. CDU is equipped with high quality PID for smart management by temperature, humidity, pressure, flow rate, and water level sensors. 【Function】 The water cooling pipework of servers can be connected to the coolant inlet and outlet of the iCOLD Rack and therefore the server heat can be delivered away from the rack by the coolant inside the air-to-liquid heat exchanger of the iCOLD Rack so that the rack is cooled down. 【Specification】 According to different wind flow and heat dissipation capacity, model No. is divided into AL060 / AL100.