Abstract: This paper aims to provide an optimum and reliable thermal design of a solar powered absorption cooling system in United Arab Emirates (UAE). A numerical algorithm was developed to compute the cooling capacity of the solar powered absorption system under the influence of several operating conditions, namely; hourly global radiation, flow rate, and the inlet generator temperature as well as investigating the associated environmental aspects. The proposed cooling system configuration consists basically of flat plate collectors, a stratified storage tank and an absorption chiller. A predictive model was programmed and simulated using INSEL software in order to analyse the performance of the system throughout summer season. A peak cooling demand of 20kW was estimated using Hourly Analysis Program (HAP) for a villa based in Dubai, UAE. Theobtained results showed that a minimum of about 50% of the power from the peak demand can be provided by the solar system during high levels of radiation.

• Publication Date: 14-Jul-2013
• DOI: 10.15224/978-981-07-7021-1-43
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Abstract: This paper presents the pre and post layout simulation results for a pierce oscillator integrated with MEMS SAW resonator. The oscillator is designed to be interface with 1.78GHz MEMS SAW resonator. The pierce oscillator has achieved 18dB gain, 1.8GHz bandwidth and about 100o phase performance. The simulation is done using CMOS 0.35u technology. The pre layout simulation of MEMS oscillator is sustained at 1.775GHz, with 0.8V voltage swing. The post layout simulation is sustained at 1.766GHz and 0.35V voltage swing. The phase noise performance after post layout simulation is 97.94dBc/Hz at 100kHz cutoff frequency.

• Publication Date: 05-May-2013
• DOI: 10.15224/978-981-07-6261-2-45
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