Description
Modern Engineering Trends in Astronomy – 2019
Sunday 15 September 2019 - Tuesday 17 September 2019, Bengaluru
Authors : Mr. Irappa M. Halagali, irappa@gmrt.ncra.tifr.res.in , Mr. Ajith Kumar B. , ajit@ncra.tifr.res.in , and
Prof. Yashwant Gupta, ygupta@ncra.tifr.res.in
Abstract for Poster :
“Heat and Power Management of new era Electronic Systems”
With the developments in Electronics device technology and software based modern design tools, signal processing systems are becoming compact and powerful. These developments alongwith the advent of high speed computers and software based signal processing, the per cubic feet power consumption and heat generation in modern signal processing systems has thrown up new challenges to designers. Dissipating the generated heat, needs special efforts and planning to continue to use the systems with their maximum capacity. Accomodating multiple systems in a small room makes it necessary to use the specially designed electronic cabinets with suitable arrangements for signal, power distribution while allowing free flow of cold air to take away the generated heat within the units.
During the development of the upgraded GMRT Backend systems, we also faced the task of supporting continued observations using the legacy backend systems and develop and install the new systems without affecting the old receivers. It is also challenging to meet the electric power requirements of these systems in safe, secure and disciplined way. In the GMRT receivers sytem, the legacy 32MHz bandwidth digital backend and the new 400 Mhz digital backend consume about 15 KWatts of power each generating a heat of 4,30,000 calories/minute. We have modified the standard 19” racks to make them suitable for handling this heat generated within the racks. We have developed a cost effective solution to provide a cool air supply through the circuits and maintain the temperature.
Here we present the details of the system developed, analysis and test results. As part of this activity an automatic calculator is also developed to calculate the heat genetated in calories/minute and the amount of cooling needed to maintain the temperature.
