Browsing by Author "Chowdhury, Jahedul"

Now showing 1 - 3 of 3
  • No Thumbnail Available
    ItemOpen Access
    Data underpinning research article "Optimising Renewable Energy Integration in New Housing Developments with Low Carbon Technologies"
    (Cranfield University, 2021-02-09 00:33) Chowdhury, Jahedul; Ozkan, Nazmiye; Hart, Phil; Varga, Liz; Hu, Yukun
    This file includes data for energy demand and generation profile for different house types in the UK. It also contains data for daily average solar irradiance for typical UK weather conditions that were used for calculating PV outputs.
  • No Thumbnail Available
    ItemOpen Access
    Data underpinning research article "Techno-environmental analysis of battery storage for grid level energy services"
    (Cranfield University, 2020-07-17 09:07) Chowdhury, Jahedul; Ozkan, Nazmiye; Goglio, Pietro; Hu, Yukun; Varga, Liz; McCabe, Leah
    This file includes data from the National Grid, UK for electricity supply and demand which was modified according to the research methodology laid out in the paper here (https://doi.org/10.1016/j.rser.2020.110018). Also, all the data needed for reproducing figures presented in the journal article are also included in the data file.
  • Thumbnail Image
    ItemOpen Access
    Modelling and simulation of steel reheating processes under oxy-fuel combustion conditions – Technical and environmental perspectives
    (Elsevier, 2019-07-11) Hu, Yukun; Tan, C. K.; Niska, John; Chowdhury, Jahedul; Balta-Ozkan, Nazmiye; Varga, Liz; Roach, Paul Alun; Wang, Chunsheng
    This paper investigates the impact of flameless oxy-fuel combustion on the thermal performance of a pilot-scale steel reheating furnace. A comprehensive mathematical model, based on the zone method of radiation analysis, was developed, which takes into account the non-grey behaviour of the furnace atmosphere under oxy-fuel combustion conditions. The model was subsequently used to simulate the temperature profile of an instrumented slab used in the experiment. The results showed that the predicted slab temperature profile along the furnace is in good agreement with measurement. However the model over predicted the absolute slab temperatures due to the influence of formation of oxide scales on the slab surface, which was not taken into account in the current model. When compared to air-fuel combustion simulation, the results of oxy-fuel combustion also indicated a marked improvement in the furnace specific fuel consumption (approximately 16%). This was mainly due to the enhanced radiative properties of the furnace atmosphere and reduced exhaust energy losses as the result of less dilution effect from nitrogen. This resulted in reduction in the overall heating time by approximately 14 min. Furthermore, if the economics of carbon capture is taken into consideration, theoretically, the energy consumption per kilogram of CO2 captured can be reduced from 3.5 to 4.2 MJ kg−1 to 0.96 MJ kg−1. In conclusion, the current studies support the view that oxy-fuel combustion retrofitting to reheating furnaces is a promising option, both from a technical and from an environmental point of view.