The widespread application of 4G and the rapid development of 5G technologies dramatically increase the energy consumption of telecommunication base station (TBS). Remarkably, the air conditioning system accounts for ...The widespread application of 4G and the rapid development of 5G technologies dramatically increase the energy consumption of telecommunication base station (TBS). Remarkably, the air conditioning system accounts for a significant part of energy consumption in TBS. In this work, passive radiative sky cooling technology has been studied to explore its application potential for TBS. We built a simulation model in DeST to investigate the effect of various envelope thermophysical properties on TBS energy saving. The main influencing factors of the radiative sky cooling on TBS energy saving have been concluded and guidance has been raised for further application. An optimized envelope design combining radiative sky cooling with appropriate heat transfer coefficients has been proposed. The energy-saving and economic analysis of the optimized envelope design at different areas shows that, except for the low heat density TBS in severe cold areas, the annual energy-saving rate is 6.77%–64.29%, and the annual total energy saving is 21.94 kWh/m2–52.74 kWh/m2. The payback period is 1.55–4.67 years, and the maximum acceptable cost limited to a 5-year payback period is $3.21/m2–$9.67/m2.展开更多
As one crossing the Nanpu Bridgeinto the middle part of the Pudongnew area,a cluster of modern buildingscomes into view.Here is the exportprocessing zone of Shanghai Jingqiao.Founded in Sept.1990,the zone wasthe first...As one crossing the Nanpu Bridgeinto the middle part of the Pudongnew area,a cluster of modern buildingscomes into view.Here is the exportprocessing zone of Shanghai Jingqiao.Founded in Sept.1990,the zone wasthe first key development zoneapproved by the State focusing onexports processing.It covers 19 squarekilometres with about 15 squarekilometres for industry use and theother four square kilometres foradministration and domestic use.Bythe end of July 1995,it had introduced269 projects with 171 underconstruction and 94 in operation,involving a total US＄3.52 billion ininvestment,with an averageinvestment of US＄13 million for eachproject.In 1994,the zone witnessedgross industrial output value of RMB5.4billion.The figure is estimated to haveexceeded RMB10 billion in 1995.展开更多
基金supported by the Natural Science Foundation of Jiangsu Province, China (BK20200373).
文摘The widespread application of 4G and the rapid development of 5G technologies dramatically increase the energy consumption of telecommunication base station (TBS). Remarkably, the air conditioning system accounts for a significant part of energy consumption in TBS. In this work, passive radiative sky cooling technology has been studied to explore its application potential for TBS. We built a simulation model in DeST to investigate the effect of various envelope thermophysical properties on TBS energy saving. The main influencing factors of the radiative sky cooling on TBS energy saving have been concluded and guidance has been raised for further application. An optimized envelope design combining radiative sky cooling with appropriate heat transfer coefficients has been proposed. The energy-saving and economic analysis of the optimized envelope design at different areas shows that, except for the low heat density TBS in severe cold areas, the annual energy-saving rate is 6.77%–64.29%, and the annual total energy saving is 21.94 kWh/m2–52.74 kWh/m2. The payback period is 1.55–4.67 years, and the maximum acceptable cost limited to a 5-year payback period is $3.21/m2–$9.67/m2.
文摘As one crossing the Nanpu Bridgeinto the middle part of the Pudongnew area,a cluster of modern buildingscomes into view.Here is the exportprocessing zone of Shanghai Jingqiao.Founded in Sept.1990,the zone wasthe first key development zoneapproved by the State focusing onexports processing.It covers 19 squarekilometres with about 15 squarekilometres for industry use and theother four square kilometres foradministration and domestic use.Bythe end of July 1995,it had introduced269 projects with 171 underconstruction and 94 in operation,involving a total US＄3.52 billion ininvestment,with an averageinvestment of US＄13 million for eachproject.In 1994,the zone witnessedgross industrial output value of RMB5.4billion.The figure is estimated to haveexceeded RMB10 billion in 1995.
