... is essential to avoid occurring within the gas cooler; leading to increases in efficiency. We present here system performance of a TR-CO 2 air source heat pump system using a customized python computer model coupled to commercial software for whole building analysis. This coupling enables variable heating...

..., the Reynolds number was maintained between 100 and 900 for different runs. The simulation and analysis results show that microchannels can be used in building envelop to provide dynamic thermal resistance and increase the energy efficiency in different buildings. The results also show that flow of a water...

... under three different scenarios: Business as Usual (BAU), Continuous Improvement Scenario (CIS), and Accelerated Improvement Scenario (AIS) up to 2030. The BAU scenario presents the energy consumption and CO 2 emissions assuming the current Energy Efficiency Ratio (EER) of 11.8 BTU/Wh is maintained...

.... Pressure and velocity are monitored at different locations along the resonator. Experiments conducted showed that the stack position and length have an influence on the efficiency of the TAE. For both lengths tested, the efficiency increased as the center position of the stack moved further away from...

... to measure solar radiance and ambient temperature respectively at the intervals of ten minutes. Experiments were carried out using the solar water heating system and a net temperature rise of 22.4°C was obtained. The energy efficiency of the compound collector was 93.1% while the obtained exergy efficiency...

... (30.5 °C) to 2.2 bar (36.2 °C) the system output is dropped by 56.4 %. ejector low grade heat CCP vapour compression VCC refrigeration efficiency energy * Contact author: fahid.riaz@u.nus.edu Energy analysis of a new combined cooling and power system for low-temperature heat utilization...

... 2 to CO ratio of 1:1 by volume. Diesel fuel as a pilot was injected into the engine in the conventional manner. The diesel engine was run at varying loads of 20, 40, 60, 80 and 100%. The performance of dual fuel engine is assessed by parameters such as thermal efficiency, exhaust gas temperature...

... rate, volumetric yield, and areal yield were 0.21 day −1 , 0.059 gm L −1 day −1 , and 15 gm m −2 day −1 , respectively. Over 10 days of sequential-batch operation, the prototype photobioreactor converted direct-normal solar energy to energy stored in biomass at an average efficiency of 1%. The areal...

.... The effects of changing ORC pump inlet temperature and turbine inlet pressure on different key parameters have been examined to evaluate the performance of the trigeneration system. These parameters are energy and exergy efficiencies, electrical to cooling ratio and electrical to heating ratio. Moreover...

... of the modeled plant in terms of electrical power, efficiency and process heat is presented and analyzed. Influences of variations in operating pressure and gas composition, on the plant performance are also reported. Key Words- Solid Oxide Fuel Cell, Biomass, Efficiency, Cogeneration Introduction...

..., ammonia is a synthetic product that can be obtained thermally, physically, chemically or biologically either from fossil fuels, biomass, or other renewable sources and can be used as a clean fuel. The refrigeration effect of ammonia is another advantage of it and is included in the efficiency calculations...

... Efficient energy use is critical for the success of any industrial facility since reduced energy consumption through energy conservation/saving programs can benefit not only consumers and utilities, but society in general as well. In particular, reduced energy consumption generally leads...

... In this paper, we undertake a study to investigate the performance of a hybrid photovoltaic-hydrogen system through energy and exergy efficiencies, improvement potential. This will help identify the irreversibilities (exergy destructions) for performance improvement purposes. Energetic...

... 26 02 2009 In the present work the effect of steam injection in the gas turbine combustion chamber is investigated on gas turbine and steam turbine work output and on thermal efficiency of the combined cycle power plant. The operating conditions investigated include gas turbine...

... and quantified and the exergy efficiencies of various components determined. The exergy efficiency of the engine is found to be 40.5% at the specified reference state. The greatest exergy destruction occurs in the engine itself, which account for 84% of total exergy destruction in the system. A parametric...

... 26 02 2009 This paper deals with an exergetic performance analysis of a gas turbine cycle integrated with SOFCs with internal reforming. As the efficiency of a gas turbine cycle is mainly defined by the maximum temperature at the turbine inlet, this temperature is fixed at 1573 K...

... 26 02 2009 Combined cycle cogeneration systems have the ability to produce power and process heat more efficiently, leading to higher performance and reduced green house gas emissions. In the present work the performance of a natural gas fired combined cycle cogeneration unit...