Collectors innovation to increase performance solar water heatereSAT Journals
Abstract There have been many studies to improve the performance of the solar water heater. The long term goal of research is to obtain scientific information, teaching materials and as the foundation of scientific development of energy conversion. The specific objective of this study is to find or develop new models and models that can improve the efficiency of the solar water heater. Research methods; research conducted using the experimental method, which is to test the amount of cover glass, flow rate and preheat a working fluid that can improve the efficiency of solar water heater. Research output: 1) The efficiency of the best solar water heater is the sum of three layers of glass cover compared to the cover glass number two layers and one layer, 2) The greater the water flow rate, the efficiency of the solar water heater increases, 3) initial heating on water entry, exit and cause the water temperature absorber plate temperature is relatively the same, so the efficiency of the solar water heater close to zero. Keywords: number of glass cover, flow rate, initial heating, solar water heater
Abstract In this paper, the effect of Exponential/Cosine Hyperbolic/Polynomial/Kaiser window parameters Coherent Gain (CG), Incoherent Power Gain (ICG), Equivalent Noise Band Width (ENBW) and Scalloping Loss (SL) on the SNR values of MST Radar returns has been investigated. Six sets of multibeam observations of the lower atmosphere made by the Indian Mesosphere-Stratosphere-Troposphere (MST) RADAR are used for the result analysis. Prior to the Fourier Transform, the in-phase and quadrature components of the Radar echo samples are weighted with Exponential/Cosine Hyperbolic/Polynomial/Kaiser window Functions. It is observed that, with the increase in the parameter “” of Exponential and Cosine Hyperbolic Window and parameter “m” of Polynomial Window increases ENBW and SL, but decreases in CG and ICG. This observation can be used to establish in improving the Signal to Noise Ratio (SNR) of MST RADAR signals. From this study it is reported that, the window e parameter “=6/m=4”can be suggested for optimum results of SNR improvement in MST RADAR signals. The optimum widow parameter“/m” in turn yields optimum Exponential window parameters as “CG=0.4768, ICG=0.3495, ENBW=1.5371, SL=0.8536”, Cosine Hyperbolic window parameters as “CG=0.4769, ICG=0.3495, ENBW=1.5366, SL=0.8535”, Polynomial window parameters as “CG=0.5719, ICG=0.4799, ENBW=1.4673, SL=0.8011”, and Kaiser window parameters as “CG=0.4991, ICG=0.3660, ENBW=1.4695, SL=0.8410”.Which corresponds to optimum mail lobe width and side lobe attenuation to increase the SNR of MST Radar noisy data.. Index Terms: CG, ICG, ENBW, SL, SNR, FFT, Spectral Analysis.
With the help of GCHQ and Cert-UK, we've produced this presentation on reducing the impact of normal cyber attacks. It's not meant to be an exhaustive guide on cyber security threats. The presentation isn't tailored to individual needs, and it is not a replacement for specialist cyber security advice.
Future of Hospitality The Emerging View 09 10 15Future Agenda
After multiple discussions around the world, this is an emerging view on the future of hospitality being shared for further comment and feedback. Events hosted by IHG (Intercontinental Hotels Group) including workshops in London, Dubai, Singapore and New York have explored key drivers of change. Other events elsewhere have added in additional perspectives.
Collectors innovation to increase performance solar water heatereSAT Journals
Abstract There have been many studies to improve the performance of the solar water heater. The long term goal of research is to obtain scientific information, teaching materials and as the foundation of scientific development of energy conversion. The specific objective of this study is to find or develop new models and models that can improve the efficiency of the solar water heater. Research methods; research conducted using the experimental method, which is to test the amount of cover glass, flow rate and preheat a working fluid that can improve the efficiency of solar water heater. Research output: 1) The efficiency of the best solar water heater is the sum of three layers of glass cover compared to the cover glass number two layers and one layer, 2) The greater the water flow rate, the efficiency of the solar water heater increases, 3) initial heating on water entry, exit and cause the water temperature absorber plate temperature is relatively the same, so the efficiency of the solar water heater close to zero. Keywords: number of glass cover, flow rate, initial heating, solar water heater
Abstract In this paper, the effect of Exponential/Cosine Hyperbolic/Polynomial/Kaiser window parameters Coherent Gain (CG), Incoherent Power Gain (ICG), Equivalent Noise Band Width (ENBW) and Scalloping Loss (SL) on the SNR values of MST Radar returns has been investigated. Six sets of multibeam observations of the lower atmosphere made by the Indian Mesosphere-Stratosphere-Troposphere (MST) RADAR are used for the result analysis. Prior to the Fourier Transform, the in-phase and quadrature components of the Radar echo samples are weighted with Exponential/Cosine Hyperbolic/Polynomial/Kaiser window Functions. It is observed that, with the increase in the parameter “” of Exponential and Cosine Hyperbolic Window and parameter “m” of Polynomial Window increases ENBW and SL, but decreases in CG and ICG. This observation can be used to establish in improving the Signal to Noise Ratio (SNR) of MST RADAR signals. From this study it is reported that, the window e parameter “=6/m=4”can be suggested for optimum results of SNR improvement in MST RADAR signals. The optimum widow parameter“/m” in turn yields optimum Exponential window parameters as “CG=0.4768, ICG=0.3495, ENBW=1.5371, SL=0.8536”, Cosine Hyperbolic window parameters as “CG=0.4769, ICG=0.3495, ENBW=1.5366, SL=0.8535”, Polynomial window parameters as “CG=0.5719, ICG=0.4799, ENBW=1.4673, SL=0.8011”, and Kaiser window parameters as “CG=0.4991, ICG=0.3660, ENBW=1.4695, SL=0.8410”.Which corresponds to optimum mail lobe width and side lobe attenuation to increase the SNR of MST Radar noisy data.. Index Terms: CG, ICG, ENBW, SL, SNR, FFT, Spectral Analysis.
With the help of GCHQ and Cert-UK, we've produced this presentation on reducing the impact of normal cyber attacks. It's not meant to be an exhaustive guide on cyber security threats. The presentation isn't tailored to individual needs, and it is not a replacement for specialist cyber security advice.
Future of Hospitality The Emerging View 09 10 15Future Agenda
After multiple discussions around the world, this is an emerging view on the future of hospitality being shared for further comment and feedback. Events hosted by IHG (Intercontinental Hotels Group) including workshops in London, Dubai, Singapore and New York have explored key drivers of change. Other events elsewhere have added in additional perspectives.
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