Solar energy storing rock-bed to heat an agricultural greenhouse

Gourdo, L.; Fatnassi, H.; Tiskatine, Rachid; Wifaya, Ahmed; Demrati, H.; Aharoune, A.; Bouirden, L.

doi:10.1016/j.energy.2018.12.036

Cited by 62 publications

(33 citation statements)

References 35 publications

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“…After parameterization of the relationship (19), it was established that the minimum difference Tin_aa − TB_a should be greater than 11 °C, in order to achieve the assumed efficiency (COP = 3) with For the developed model, the calculated error σ is at the level of 0.11. Assuming that the COP of the storage process cannot be less than 1, then the relationship takes the form:…”

Section: Energy Effmentioning

confidence: 99%

“…Inequality is always met if T in_aa >T B_a . However, assuming that the COP will be at a level greater than 3, which is dictated by the efficiency of the national power system, the relationship (18) can be reduced to the form (19):…”

Section: Energy Effmentioning

confidence: 99%

“…If we use the approximation 0.341 1/3 is used, then the relationship (19) can be reduced to the form (20):…”

Section: Energy Effmentioning

confidence: 99%

“…The amount of heat stored is proportional to the density, volume, specific heat and temperature changes of the stored material [16]. Heat storage media can be various substances, such as liquids (water, mineral oils, salt solutions, liquid metals and alloys) or solids (stones, concrete, sand, bricks) [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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The Comparison of Different Types of Heat Accumulators and Benefits of Their Use in Horticulture

Kurpaska

Knaga

Latała

et al. 2020

Sensors

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This paper presents the results of the analysis of thermal issues and energy efficiency of three types of accumulators; namely stone-bed; water and phase change. Research experiments were carried out during April–October 2013 in a standard commercial semi-cylindrical high plastic tunnel with tomato cultivation of 150 m2. A stone-bed accumulator; with an area of almost 75 m2 was installed in the tunnel below ground level; while a water accumulator with a volume of 4 m3 was installed outside the tunnel. A phase change material (PCM) accumulator, with a volume of 1 m3 containing paraffin, was located inside the tunnel. The heat storage capacity of the tested accumulators and the energy efficiency of the process were determined based on the analyses of the 392 stone-bed charging and discharging cycles, the 62 water accumulator charging cycles and close to 40 PCM accumulator charging and discharging cycles. Dependencies in the form of easily measurable parameters; have been established to determine the amount of stored heat; as well as the conditions for which the effectiveness of these processes reaches the highest value. The presented analysis falls under the pro-ecological scope of replacing fossil fuels with renewable energy. As a result of the analysis; it was found that; in the case of a stone-bed; such an accumulator shows higher efficiency at lower parameters; that is, temperature difference and solar radiation intensity. In turn; a higher temperature difference and a higher value of solar radiation intensity are required for the water accumulator. The energy storage efficiency of the PCM accumulator is emphatically smaller and not comparable with either the stone-bed or the water accumulator.

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Section: Energy Effmentioning

confidence: 99%

Section: Energy Effmentioning

confidence: 99%

“…If we use the approximation 0.341 1/3 is used, then the relationship (19) can be reduced to the form (20):…”

Section: Energy Effmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Comparison of Different Types of Heat Accumulators and Benefits of Their Use in Horticulture

Kurpaska

Knaga

Latała

et al. 2020

Sensors

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“…Rising energy demands have led to a series of problems, such as increased fossil fuel consumption, depletion of non-renewable resources, environmental pollution problems, and political impacts [1][2][3]. Many scholars have studied clean energy, including wind [4,5], solar [6][7][8], geothermal [9,10], and tidal [11]. The use of batteries in electric vehicles (EVs) [12,13] to replace traditional fossil fuels can effectively reduce the global use of fossil fuels as automotive batteries provided good conversion and storage capabilities.…”

Section: Introductionmentioning

confidence: 99%

Heat Pipe Thermal Management Based on High-Rate Discharge and Pulse Cycle Tests for Lithium-Ion Batteries

Deng

Xie

et al. 2019

Energies

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A battery thermal management system (BTMS) ensures that batteries operate efficiently within a suitable temperature range and maintains the temperature uniformity across the battery. A strict requirement of the BTMS is that increases in the battery discharge rate necessitate an increased battery heat dissipation. The advantages of heat pipes (HPs) include a high thermal conductivity, flexibility, and small size, which can be utilized in BTMSs. This paper experimentally examines a BTMS using HPs in combination with an aluminum plate to increase the uniformity in the surface temperature of the battery. The examined system with high discharge rates of 50, 75, and 100 A is used to determine its effects on the system temperature. The results are compared with those for HPs without fins and in ambient conditions. At a 100 A discharge current, the increase in battery temperature using the heat pipe with fins (HPWF) method is 4.8 °C lower than for natural convection, and the maximum temperature difference between the battery surfaces is 1.7 °C and 6.0 °C. The pulse circulation experiment was designed considering that the battery operates with a pulse discharge and temperature hysteresis. The depth of discharge is also considered, and the states-of-charge (SOC) values were 0.2, 0.5, and 0.8. The results of the two heat dissipation methods are compared, and the optimal heat dissipation structure is obtained by analyzing the experimental results. The results show that when the ambient temperature is 37 °C, differences in the SOC do not affect the battery temperature. In addition, the HPWF, HP, and natural convection methods reached stable temperatures of 40.8, 44.3, and the 48.1 °C, respectively the high temperature exceeded the battery operating temperature range.

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2022

Design and Construction of Bioclimatic Wooden Greenhouses 2

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Solar energy storing rock-bed to heat an agricultural greenhouse

Cited by 62 publications

References 35 publications

The Comparison of Different Types of Heat Accumulators and Benefits of Their Use in Horticulture

The Comparison of Different Types of Heat Accumulators and Benefits of Their Use in Horticulture

Heat Pipe Thermal Management Based on High-Rate Discharge and Pulse Cycle Tests for Lithium-Ion Batteries

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