Primary energy savings using heat storage for biomass heating systems

Mitrović, Darko; Janevski, Jelena N.; Laković, Mirjana

doi:10.2298/tsci120503180m

Cited by 8 publications

(3 citation statements)

References 11 publications

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“…Therefore to extend the use of the biomass CHP and maximize its average efficiency, one solution is to consider a heat storage system to supply heat during the peak load by storing the unused energy produced by the plant from the low heat demand periods [4]. Indeed this solution is generally used to make CHP or biomass boilers more flexible leading to a better environmental and economic efficiencies [5][6][7][8]. Several technologies of heat storage are commercially available but this contribution is not intended to be a review of these technologies and the reader interested can refer to [4,9,10].…”

Section: Introductionmentioning

confidence: 99%

Integration of heat storage system into district heating networks fed by a biomass CHP plant

Sartor

Dewallef

2018

Journal of Energy Storage

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Biomass Combined Heat and Power (CHP) plants connected to district heating networks (DHN) are recognized as a very good opportunity to increase the share of renewable sources into energy systems. However, as CHP plants are not optimized for electricity production, their operation is profitable only if a sufficient heat demand is available throughout the year. On the other hand, these plants often work for baseline operations and backup boilers are used to supply the peak demand. To extend the use of the CHP plants and reduce costs, conventional fuel use and emissions, it is proposed to study the feasibility of using the DHN itself or additional high temperature heat storage as retrofit of an existing CHP plant. This work is based on a simple and effective methodology that provides accurate estimations of economic, environmental and energetic performances of CHP plants connected to district heating networks. The focus is performed on the integration of the heat storage as retrofit of existing DHN considering the local policies. The DHN of the University in Liège (Belgium) is used as an application framework to demonstrate the effectiveness of the selected approach. The potential energy, pollutant emissions savings and resulting energy costs are estimated and the current policy limitations will be discussed.

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Section: Introductionmentioning

confidence: 99%

Integration of heat storage system into district heating networks fed by a biomass CHP plant

Sartor

Dewallef

2018

Journal of Energy Storage

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“…The production of biofuels through thermochemical conversion processes with a broad range of technologies has drawn the most attention in the world. The main advantage of thermochemical processes for biomass conversion in comparison to other methods such as biochemical technologies is the feedstock used (Mitrovi et al, 2012;Kumar and Tyagi, 2013;Kumar et al, 2009). There are three main routes for biomass' thermochemical conversion including combustion, gasification and pyrolysis.…”

Section: Introductionmentioning

confidence: 99%

A review on conversion of biomass to biofuel by nanocatalysts

Akia¹,

Yazdani²,

Motaee³

et al. 2014

Biofuel Res. J.

228

101

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HIGHLIGHTSSignificant improvements in biomass conversion using nanocatalysts. Feasibility of utilization milder operating conditions by using nanocatalysts compared to the bulk catalysts. The role of nanocatalysts to overcome some challenges in biomass conversion, improving the products quality. GRAPHICAL ABSTRACTProducts from nanocatalytic conversion of biomass The world's increasing demand for energy has led to an increase in fossil fuel consumption. However this source of energy is limited and is accompanied with pollution problems. The availability and wide diversity of biomass resources have made them an attractive and promising source of energy. The conversion of biomass to biofuel has resulted in the production of liquid and gaseous fuels that can be used for different means methods such as thermochemical and biological processes. Thermochemical processes as a major conversion route which include gasification and direct liquefaction are applied to convert biomass to more useful biofuel. Catalytic processes are increasingly applied in biofuel development. Nanocatalysts play an important role in improving product quality and achieving optimal operating conditions. Nanocatalysts with a high specific surface area and high catalytic activity may solve the most common problems of heterogeneous catalysts such as mass transfer resistance, time consumption, fast deactivation and inefficiency. In this regard attempts to develop new types of nanocatalysts have been increased. Among the different biofuels produced from biomass, biodiesel has attained a great deal of attention. Nanocatalytic conversion of biomass to biodiesel has been reported using different edible and nonedible feedstock. In most research studies, the application of nanocatalysts improves yield efficiency at relatively milder operating conditions compared to the bulk catalysts. ARTICLE INFO ABSTRACT

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“…Until the year 2020 the EU as a whole has taken the commitment of cutting emissions of greenhouse gases by 20%, reducing energy consumption by 20% through energy efficiency, and meeting 20% of the energy needs from renewable sources [1]. Some recent researches were focused on primary energy saving and greenhouse gasses emission reduction in district heating systems by: using natural gas fired co-generations plants [2], primary energy savings using heat storage in district heating [3], integration of solar energy in the district heating network:…”

Section: Introductionmentioning

confidence: 99%

Evaluation of integration of solar energy into the district heating system of the city of Velika Gorica

2016

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In the current situation the district heating system supplies the 32% of the total thermal consumption in the City of Velika Gorica. The main issue in the district heating system is the utilization of 14 small and distributed heat plants, each providing heat to a separate and individually disconnected heating grid. Reduction of costs and CO 2 emissions can be reached with a high penetration of renewable sources. The aim of this paper is to evaluate and design the integration of a central solar heating plant with seasonal storage into the district heating system of the city. An economic assessment was made with a pessimistic and an optimistic prediction of the solar heat cost for ground mounted collectors and roof mounted collectors. The seasonal storage was chosen to be pit thermal energy storage; the system was modeled as a low-temperature district heating system with the real thermal demands of a district heating plant.

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Primary energy savings using heat storage for biomass heating systems

Cited by 8 publications

References 11 publications

Integration of heat storage system into district heating networks fed by a biomass CHP plant

Integration of heat storage system into district heating networks fed by a biomass CHP plant

A review on conversion of biomass to biofuel by nanocatalysts

Evaluation of integration of solar energy into the district heating system of the city of Velika Gorica

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