Contribution to mathematical modelling of charging and discharging of the seasonal heat storage tank

2012 ◽  
Vol 3 (1) ◽  
pp. 75-79
Author(s):  
L. Böszörményi ◽  
E. Šiváková
Keyword(s):  
Storage Tank ◽  
Heat Supply ◽  
Heat Storage ◽  
Adverse Impact ◽  
Heating Period ◽  
Short Term ◽  
Solar Systems ◽  
Accumulation Capacity ◽  
Seasonal Heat ◽  
Direct Use

Abstract The seasonal heat storage tank is the most important component of the SDH system, which allows significant increase in the share of solar energy in heat supply in comparison with conventional solar systems with short-term accumulation of heat. The adverse impact of their investment sophistication on competitiveness may be compensated by the increased use. For example: Administrative cooperation with heat pump allows increasing the accumulation capacity of the seasonal heat storage tank. Such cooperetion causes the direct use of heating energy and the accumulation of cooling energy produced by heat punp in the final stage of the heating period. It can be used to remote cooling supplied buildings. Experimentation on mathematical models is possible to obtain valuable insights about the dynamics of the processes of charging and discharging in the seasonal storage tank and subsequently used in the design, implementation and operation.

scholarly journals CALCULATION OF CONSTRUCTION ELEMENTS OF HEAT ACCUMULATORS WITH LIQUID AND SOLID HEAT-ACCUMULATING MATERIAL

2021 ◽  
pp. 475-486
Author(s):  
Yuriy Chоvniuk ◽  
Petro Cherednichenko ◽  
Anna Moskvitina ◽  
Maria Shyshyna
Keyword(s):  
Solar Energy ◽  
Heat Supply ◽  
Heat Storage ◽  
Clean Energy ◽  
Hot Water ◽  
Storage Material ◽  
Heat Accumulator ◽  
Heat Storage Material ◽  
Low Efficiency ◽  
Seasonal Heat

The depletion of traditional fuel resources and the deterioration of the ecology of the environment, an increase in emissions into the air make the research on renewable energy and the need to attract clean energy sources to the energy balance of Ukraine. A promising direction is the use of solar energy for municipal heat supply, which can provide large heat needs even in temperate climates. Basically, the methods of using thermal energy from the sun are generally economically effective, but the share of using thermal solar energy is quite small. It can also be solved by accumulating these surpluses and using them during the heating season. The experience of operating unorganized seasonal heat accumulators in the soil indicates the low efficiency of such heat storage due to significant heat losses into the surrounding soil mass. For such systems (solar collectors + seasonal heat accumulator), it is advisable to use organized seasonal heat accumulators, which are designed for a certain amount of heat. An organized seasonal heat accumulator is understood as a heat storage system, which consists of a heat insulated tank for storing heat storage material and a heat carrier, which is used to transport heat to the heat storage material during its accumulation during the warm period and heat supply in the cold season from the heat storage material to energy consuming systems (heating system, hot water supply, etc.). The design of a heat accumulator with solid and liquid heat accumulating material is considered, in which a more uniform distribution of temperatures in the volume of the heat accumulator is achieved. A method for calculating structural elements for a heat accumulator with liquid and solid heat accumulating material has been developed, taking into account the heat loss of the heat accumulator and the characteristics of the soils at the construction site. 

A review of solar-driven short-term low temperature heat storage systems

2021 ◽  
Vol 141 ◽  
pp. 110824
Author(s):  
Yongliang Shen ◽  
Shuli Liu ◽  
Abdur Rehman Mazhar ◽  
Xiaojing Han ◽  
Liu Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Heat Storage ◽  
Storage Systems ◽  
Short Term ◽  
Temperature Heat

scholarly journals Development of New Heat Supply Unit Using Latent Heat (Dynamic Characteristics of Heat Storage Unit by a Use of Plate Fin Type Heat Exchanger)

2005 ◽  
Vol 71 (704) ◽  
pp. 1126-1132
Author(s):  
Hitoshi ASANO ◽  
Terushige FUJII ◽  
Yoshinori HISAZUMI ◽  
Toshihiro HORI ◽  
Tetsuo ABIKO ◽  
...  
Keyword(s):  
Heat Exchanger ◽  
Latent Heat ◽  
Dynamic Characteristics ◽  
Heat Supply ◽  
Heat Storage ◽  
Storage Unit

Hot tap water production by a 4 kW sorption segmented reactor in household scale for seasonal heat storage

2018 ◽  
Vol 17 ◽  
pp. 118-128 ◽  
Author(s):  
M. Gaeini ◽  
R. van Alebeek ◽  
L. Scapino ◽  
H.A. Zondag ◽  
C.C.M. Rindt
Keyword(s):  
Heat Storage ◽  
Tap Water ◽  
Water Production ◽  
Seasonal Heat

Failure analysis of electric-heater tube for heat-storage tank

2018 ◽  
Vol 87 ◽  
pp. 69-79 ◽  
Author(s):  
Sol-Ji Song ◽  
Sangwon Cho ◽  
Woo-Cheol Kim ◽  
Jung-Gu Kim
Keyword(s):  
Failure Analysis ◽  
Storage Tank ◽  
Heat Storage ◽  
Electric Heater ◽  
Heater Tube

scholarly journals Air Conditioner with Latent Heat Storage Tank

2013 ◽  
Vol 116 (1135) ◽  
pp. 392-393
Author(s):  
Hideki TAKEBAYASHI ◽  
Naomichi YANO
Keyword(s):  
Latent Heat ◽  
Storage Tank ◽  
Heat Storage ◽  
Air Conditioner ◽  
Latent Heat Storage

Volume Sizing for Thermal Storage With Phase Change Material for Concentrated Solar Power Plant

2014 ◽  
Author(s):  
Ben Xu ◽  
Peiwen Li ◽  
Cholik Chan
Keyword(s):  
Power Plant ◽  
Phase Change ◽  
Phase Change Material ◽  
Storage Tank ◽  
Solar Power ◽  
Heat Storage ◽  
Storage System ◽  
Thermal Storage ◽  
Concentrated Solar Power ◽  
Change Material

With a large capacity thermal storage system using phase change material (PCM), Concentrated Solar Power (CSP) is a promising technology for high efficiency of solar energy utilization. In a thermal storage system, a dual-media thermal storage tank is typically adopted in industry for the purpose of reducing the use of the heat transfer fluid (HTF). While the dual-media sensible heat storage system has been well studied, a dual-media latent heat storage system (LHSS) still needs more attention and study; particularly, the sizing of volumes of storage tanks considering actual operation conditions is of significance. In this paper, a strategy for LHSS volume sizing is proposed, which is based on computations using an enthalpy-based 1D model. One example of 60MW solar thermal power plant with 35% thermal efficiency is presented. In the study, potassium hydroxide (KOH) is adopted as PCM and Therminol VP-1 is used as HTF. The operational temperatures of the storage system are 390°C and 310°C, respectively for the high and low temperatures. The system is assumed to operate for 100 days with 6 hours charge and 6 hours discharge every day. From the study, the needed height of the thermal storage tank is calculated from using the strategy of tank sizing. The method for tank volume sizing is of significance to engineering application.

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