Development of an Experimental Rig to Measure the Transient Response of Crossflow Heat Exchanger

Joseph Russell Heinlen Schaadt

Abstract


Data centers are most commonly cooled with steady flow of cooling air delivered to electronic equipment from centralized cooling systems. Our research is motivated by the potential for gaining energy efficiencies by using dynamic on-demand cooling that is delivered by systems that are distributed rather than centralized. The overall project concerns the design, fabrication, and testing of an experimental apparatus to measure the dynamic response of water-air cross-flow heat exchangers that are at the heart of dynamic cooling systems. We have built a unique, computer-controlled experimental apparatus to characterize dynamic heat exchangers and extract the major parameters that control their response. The experimentally derived parameters will be integrated into mathematical models of the heat exchangers that will be used in control schemes for integrated control of cooling and IT load allocation. The objective of this Undergraduate Research Project is to obtain qualification data for the air and water side operating in steady state with constant flow rate and inlet air and water temperature. Experimental measurements of water and air inlet and exit temperatures and flow rates will be used in order to qualify the apparatus by extracting heat exchanger parameters such as steady state effectiveness that can be compared to literature data.


Keywords


Heat Exchanger, Data Center, Dynamic Response

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