The Experts below are selected from a list of 258 Experts worldwide ranked by ideXlab platform
Massimo Filippini - One of the best experts on this subject based on the ideXlab platform.
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Short- and long-run time-of-use price elasticities in Swiss residential Electricity demand
Energy Policy, 2011Co-Authors: Massimo FilippiniAbstract:This paper presents an empirical analysis on the residential demand for Electricity by time-of-day. This analysis has been performed using aggregate data at the city level for 22 Swiss cities for the period 2000-2006. For this purpose, we estimated two log-log demand equations for peak and off-Peak Electricity consumption using static and dynamic partial adjustment approaches. These demand functions were estimated using several econometric approaches for panel data, for example LSDV and RE for static models, and LSDV and corrected LSDV estimators for dynamic models. The attempt of this empirical analysis has been to highlight some of the characteristics of the Swiss residential Electricity demand. The estimated short-run own price elasticities are lower than 1, whereas in the long-run these values are higher than 1. The estimated short-run and long-run cross-price elasticities are positive. This result shows that peak and off-Peak Electricity are substitutes. In this context, time differentiated prices should provide an economic incentive to customers so that they can modify consumption patterns by reducing peak demand and shifting Electricity consumption from peak to off-Peak periods. © 2011 Elsevier Ltd.
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Short- and long-run time-of-use price elasticities in Swiss residential Electricity demand
Energy Policy, 2011Co-Authors: Massimo FilippiniAbstract:Abstract This paper presents an empirical analysis on the residential demand for Electricity by time-of-day. This analysis has been performed using aggregate data at the city level for 22 Swiss cities for the period 2000−2006. For this purpose, we estimated two log–log demand equations for peak and off-Peak Electricity consumption using static and dynamic partial adjustment approaches. These demand functions were estimated using several econometric approaches for panel data, for example LSDV and RE for static models, and LSDV and corrected LSDV estimators for dynamic models. The attempt of this empirical analysis has been to highlight some of the characteristics of the Swiss residential Electricity demand. The estimated short-run own price elasticities are lower than 1, whereas in the long-run these values are higher than 1. The estimated short-run and long-run cross-price elasticities are positive. This result shows that peak and off-Peak Electricity are substitutes. In this context, time differentiated prices should provide an economic incentive to customers so that they can modify consumption patterns by reducing peak demand and shifting Electricity consumption from peak to off-Peak periods.
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Electricity demand by time of use: an application of the household AIDS model
Energy Economics, 1995Co-Authors: Massimo FilippiniAbstract:In this study, we estimated the price and expenditure elasticities of peak and off-Peak Electricity consumption using a micro data set on 220 households living in 19 Swiss cities. The household version of the almost ideal demand system model (AIDS) was used as a framework. To incorporate household characteristics, the AIDS model was expanded by specifying the intercept as a linear function of household characteristics variables. Results indicate that demand for peak and off-Peak Electricity is elastic, and that cross-price effects are positive as well as the elasticity of substitution. Therefore, peak and off-Peak Electricity are substitutes in the Hicks-Allen sense.
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Swiss residential demand for Electricity by time of use: An application of the almost ideal demand system
The Energy Journal, 1995Co-Authors: Massimo FilippiniAbstract:This study examines the residential demand for Electricity by time-of-use in Switzerland. For this purpose, an almost ideal demand system (AIDS) model for peak and off-Peak Electricity consumption is estimated using panel data covering the years 1987-1990 and 21 cities. The empirical analysis characterizes the Swiss residential Electricity market as rather price responsive. The own partial price elasticities are estimated to range between -1.29 and -1.50 during the peak period between -2.36 and -2.42 during the off-Peak period. These elasticities show a high responsiveness of Electricity consumption to changes in peak and off-Peak prices. Moreover, the positive values of the partial cross price elasticities and substitution elasticities show that peak and off-Peak Electricity are substitutes. 22 refs., 3 figs.
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Swiss residential demand for Electricity by time-of-use
Resource and Energy Economics, 1995Co-Authors: Massimo FilippiniAbstract:Abstract In this study, we have examined the residential demand for Electricity by time-of-day in Switzerland. For this purpose, a model of two log-linear stochastic equations for peak and off-Peak Electricity consumption was estimated employing aggregated data referring to four years and 40 cities. The empirical analysis has highlighted some of the characteristics of the Swiss residential Electricity market. The estimated short-run own-price elasticities are −0.60 during the peak period and −0.79 during the off-Peak period. Whereas in the long-run these values, as expected, are higher than in the short-run with a value of −0.71 during the peak period and −1.92 during the off-Peak period. These elasticities show a high responsiveness of Electricity consumption to changes in prices. Moreover, positive values of the cross-price elasticities show that peak and off-Peak Electricity are substitutes.
Yulong Ding - One of the best experts on this subject based on the ideXlab platform.
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Heating Characteristics and Economic Analysis of a Controllable On-Demand Heating System Based on off-Peak Electricity Energy Storage
Journal of Thermal Science, 2019Co-Authors: Shaowu Yin, Yongle Shi, Lige Tong, Chuanping Liu, Li Wang, Yulong DingAbstract:The working principle of a controllable on-demand heating system based on off-Peak Electricity energy storage (COHSBOEES) is as follows: the cheap off-Peak Electricity energy is converted into heat energy for storage in the evening, and the heat energy can be extracted on demand for heating during daytime peak or flat Electricity periods. This technology can promote the smooth operation of the power grid, solve the problem of peak regulation for the electrical network, and promote renewable energy consumption. Based on the controllable on-demand heating strategy, a COHSBOEES for a heating area of 1000 m2 was designed and built. Variations in the energy consumption and operating cost of the COHSBOEES in different heating situations were analyzed. The results showed that, off-Peak Electricity energy storage for heating was energy saving in comparison with central heating when the heating intensity of the COHSBOEES was 70 W/m2 and the on-demand heating rate was less than 73.0%, and the off-Peak Electricity energy storage for heating was energy saving at any on-demand heating rate when the COHSBOEES had a heating intensity of 50 W/m2. After the COHSBOEES has been running for three complete heating seasons, when the off-Peak Electricity price was 0.25 yuan/kW·h, the energy consumption cost of the COHSBOEES can be saved by 77.6% in comparison with central heating.
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Performance Simulation and Benefit Analysis of Ammonia Absorption Cooling and Heating Dual-Supply System Based on off-Peak Electricity Heat Storage
Energies, 2019Co-Authors: Shaowu Yin, Yongle Shi, Lige Tong, Li Wang, Yulong DingAbstract:The energy consumption of urban central heating in northern China is two to four times that in northern Europe and other countries. Beijing has adopted measures, such as ‘coal to gas’ and ‘coal to Electricity’, to reduce environmental pollution caused by central heating. Given a peak-to-valley difference in the Electricity supply of power plant, which is uneven day and night, this study proposes to store the night-time off-Peak Electricity in the form of heat energy and drive the ammonia absorption system in the form of steam or hot water during peak or flat Electricity. Simulation results of ammonia absorption cooling and heating dual-supply system show that heat source temperature increases, evaporation temperature increases, and cooling water temperature decreases are all beneficial to improve the refrigeration coefficient in the summer cooling condition. In the meantime, heat source temperature increases, evaporation temperature increases, and cooling water temperature decreases are beneficial for increasing the heating coefficient in the winter heating condition. The heating and cooling coefficients of the system are 1.38 and 0.65 in the optimal working condition in winter and summer. Benefit analysis shows that, compared with central heating and cold storage air conditioning, the system can save 576,000 tons of standard coal and 1.417 million tons of carbon dioxide if used in 12% of the cooling and heat supply areas in Beijing. The potential for energy saving and emission reduction is large.
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Optimization of Cold Storage Efficiency in a Rankine‐Cycle‐Based Cold Energy Storage System
Energy Technology, 2016Co-Authors: Yulong DingAbstract:A 5 kW small-scale cold energy storage (CES) system based on subcritical CO2 was studied by thermodynamic analysis. If off-Peak Electricity is used to heat CO2 in the superheater, the predicted storage efficiency is 30–40 % if we consider the actual efficiencies of the key components in the CES system. In the ideal case, the maximum storage efficiency is as high as 43.9 %. The value of the storage efficiency is much larger and can be over 100 % if waste heat is utilized in the heater. The parametric study showed that the cold storage efficiency in the CES system was improved with an increase of the operating pressure and component efficiencies. The mass flow rate of CO2 and the temperature at the inlet of the engine had a negative contribution to the storage efficiency because of the increased Electricity consumption in the superheater.
Behdad Moghtaderi - One of the best experts on this subject based on the ideXlab platform.
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Thermodynamic analysis of a novel hybrid thermochemical-compressed air energy storage system powered by wind, solar and/or off-Peak Electricity
Energy Conversion and Management, 2019Co-Authors: Cheng Zhou, Elham Doroodchi, Behdad MoghtaderiAbstract:Abstract In this paper, a hybrid energy storage system based on integrated thermochemical and compressed air energy storage is proposed. This hybrid system can store energy from wind, solar and/or off-Peak Electricity simultaneously. In the energy charging process, the concentrated solar heat is used to provide heat for the endothermal reduction of tricobalt tetroxide to cobalt monoxide. Meanwhile, wind energy is employed to drive a series of compressors for compressing the input ambient air. The products (cobalt monoxide and compressed air) are then stored temporarily. In the energy discharging process, the compressed air is released to oxidize cobalt monoxide which generates high-quality heat. The superheated and pressurized air is then used for Electricity generation via air turbines. In conventional compressed air energy storage, natural gas is employed for superheating the compressed air. By contrast, the proposed hybrid system completely eliminates the use of fossil fuel and replaces it with the exothermal oxidation heat of cobalt monoxide, which originates from solar energy. Moreover, cobalt oxides can be stored at ambient temperature for an extended period without any insulation requirements, which renders the system to be a long-term energy storage solution. According to the thermodynamic analysis, the hybrid system can achieve a round trip efficiency of 56.4% with an energy storage density of 3.9 kWh/m3. Meanwhile, the proposed system has an overall exergy efficiency of 75.6% with the largest exergy destruction process taking place in the intercoolers. The sensitivity analysis demonstrates that the round trip efficiency is mostly sensitive to the reactivity of cobalt monoxide, the isentropic efficiency of compressors and turbines, and cavern operating pressures.
G.c. Bakos - One of the best experts on this subject based on the ideXlab platform.
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Energy management method for auxiliary energy saving in a passive-solar-heated residence using low-cost off-Peak Electricity
Energy and Buildings, 2000Co-Authors: G.c. BakosAbstract:This paper describes the optimal control of operation of the auxiliary heating system used as backup in a passive-solar-heated system. The mathematical model of the general solution is given and the minimum cost method is applied. Furthermore, a specific application is studied for a residence heated using a combined sunspace-Trombe Wall passive solar system and an electrically heated thermal storage floor to satisfy the heating requirements of the house.
Ruzhu Wang - One of the best experts on this subject based on the ideXlab platform.
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Thermal energy storage using absorption cycle and system: A comprehensive review
Energy Conversion and Management, 2020Co-Authors: Abel Mehari, Ruzhu WangAbstract:Abstract Due to the high energy storage density and long-term storage capability, absorption thermal energy storage is attractive for the utilization of solar energy, waste heat, off-Peak Electricity, and etc. In recent years, absorption thermal energy storage has been intensively studied from thermodynamic cycles, working pairs, and system configurations for various purposes. In this paper, first, the absorption thermal energy storage cycles are discussed in detail. Then, storage integration with a conventional absorption chiller/heat pump, which can be driven by solar energy or compressor, is presented in a way of valorizing absorption systems. Next, working pairs including water-based working pairs, ammonia-based working pairs, alcohol-based working pairs, and others are reviewed. Finally, future perspectives are forwarded to realize the absorption thermal energy storage in practice, which encompasses developing of new absorption cycles and system configurations, new working pairs, and new reactor and heat exchanger design.
