Soil labile organic carbon sensitively reflects subtle changes in the soil carbon pool and is an important aspect of forest soil carbon pool research. However, little is known regarding soil labile
Abstract. In order to solve the problem of the soil heat imbalance due to the year-round operation of the solar-ground source heat pump in regions with the large gap
Based on energy balance and heat conduction equation, quasi-three-dimensional non-steady state model of heat storage and heat release process in soil around underground heat exchanger was built.
where SCS is soil carbon storage, in mg/hm 2 CO 2-eq; SOC is the soil organic carbon content, in g/kg, which was determined by the K 2 Cr 2 O 7-H 2 SO 4 oxidation method from the soil samples.
Categories three and four are for large-scale systems where the energy could be stored as gravitational energy (hydraulic systems), thermal energy (sensible, latent), chemical energy (accumulators, flow batteries), or compressed air (or coupled with liquid or natural gas storage). 4.1. Pumped hydro storage (PHS)
The cross-seasonal borehole thermal storage technology is based on the solar heat source exchanging heat with the underground soil through the buried pipe heat exchanger,
Soil heat storage is a very important thermal energy storage technique and generally used in solar seasonal heat storage systems [5,6]. In the non-heating season, the buried heat exchanger system [7] stores the heat collected by the solar collector into the soil and then during the heating season the stored heat is extracted through the heat
The photovoltaic industry is developing rapidly because of its renewable energy and other advantages. However, the installation of this infrastructure may affect soil, vegetation, and carbon dynamics, making it is necessary to carry out vegetation restoration work at a plant''s location in the later stages of its construction. For this reason, three
Soil stress-strain characteristics and energy dissipation process Table 3 showed that there were significant differences (P<0.05) Elastic energy storage stage; ED: Energy dissipation stage; EL: Energy loss stage. 4.3. Effect of moisture content on soil At the
Weight-specific free energy state of the soil water storage, as defined in Eq. (8), plotted against the relative saturation of the three different soils, assuming a depth to groundwater of 10 m.
Ground-coupled heat pump (GCHP) system is one of the most popular applications of soil thermal storage (STS) technology, which belongs to the low-temperature thermal storage technology. The GCHP
The amount of C in soil represents a substantial portion of the carbon found in terrestrial ecosystems of the planet. Total C in terrestrial ecosystems is approximately 3170 gigatons (GT; 1 GT = 1
The soil''s thermal conductivity λ, and heat capacity C p along the radial distribution across the energy pile group cross section for Case 1 and Case 2 are shown in Fig. 10 (a), 10 (b), 10 (c), and 10 (d). The thermal conductivity and heat capacities of unsaturated soil will follow the same trend as the degree of saturation as shown in the
Physical and chemical stabilisation mechanisms are now known to play a critical role in controlling carbon (C) storage in mineral soils, leading to suggestions that
The amounts of soil heat storage capacity, energy consumption and COP of mode A and mode B are similar, and mode A can be assumed to be the more suitable operating mode for its simple operation in
With the long-term running of the subway, the soil layer around the tunnel takes on the thermal deposition effect, which can lead the air in the tunnel to heat up and pose a serious threat to the safety operation of trains. Through taking some subway tunnels from typical zones as an example, the influence of tunnel depth on the heat storage
The heat storage characteristics of subway tunnel soil mass are generally consistent with the existing literatures [30, 36, 37]. It demonstrates a strong heat storage capacity in the initial stage
soil carbon storage have been investigated in independent studies of carbon storage for stands of different ages (e.g., 0 to 8-year-old Eucalyptus plantations [15]; 29 to 46-year- old Dragon spruce forests [7]; 0 to 110-year-old Scots pine [16]; and 40 to
Clearly, the physiological capacity for storage biosynthesis is present in soil communities. Some microbial storage compounds have already been quantified in soils. PHB contents of 1–4 µg C g −1 soil have been reported for untreated soils [ 40, 41 ], with a tenfold increase observed after glucose addition [ 41 ].
To study the energy storage and dissipation characteristics of deep rock under two-dimensional compression with constant confining pressure, the single cyclic loading-unloading
Accordingly, this paper analyzes the impact of changes in soil thermal conductivity on the thermal performance of energy pile systems based on the theory of soil vapor latent heat transport. A field test was carried out and a three-dimensional numerical model considering temperature-dependent soil thermal conductivity based on the test was established.
As a carbon - free, economical and safe energy carrier, ammonia is favoured and has been used in many different applications for combustion. However, there are few reports of NH 3 being burned in a fluidized bed. This investigation of the premixed combustion of NH 3 and O 2 in a single bubble inside a fluidized bed was done both
Biochar has shown potential use in a multitude of applications, such as in soil amendment, catalyst/support, adsorbent, and energy storage [24], [25], [26]. From the energy storage perspective, it can be used as electrode material
Knowledge of the soil water and stoichiometrical characteristics (SC) during long-term natural vegetation restoration is essential for managing the restoration of vegetation. To evaluate the response of soil water storage (SWS), soil organic carbon (SOC), total nitrogen content (TN) and total phosphorous content (TP) to long-term
These three types of TES cover a wide range of operating temperatures (i.e., between −40 C and 700 C for common applications) and a wide interval of energy storage capacity (i.e., 10 - 2250 MJ / m 3, Fig. 2), making TES an interesting technology for many short-term and long-term storage applications, from small size domestic hot water
Natural energy efficiency (NEE) decreases with rock thickness, while energy storage efficiency (SE) shows a nonlinear relationship with it. (5) Orthogonal experiment results indicate that the thermal conductivity and specific heat of the rock are crucial in influencing the natural energy efficiency (NEE) of the surrounding rock.
Soil carbon and nitrogen pools are crucial for maintaining the balance of carbon and nitrogen cycling in ecosystems and also for reducing the impacts of global climate change. However, current research lacks an understanding of the effects of long-term vegetation restoration on soil carbon and nitrogen pools and their storage in
Using soil and groundwater for heat storage offers an opportunity to increase the potential for renewable energy sources. For example, solar heating in
The rate of change of heat storage, or heat storage for short (ΔS), is calculated from soil volumetric heat capacity (C) and temperature. The objectives of this study were to determine how choices
Soil heat storage is a very important thermal energy storage technique and generally used in solar seasonal heat storage systems [5, 6]. In the non-heating season, the buried heat exchanger system [ 7 ] stores the heat collected by the solar collector into the soil and then during the heating season the stored heat is extracted
This storage equilibrium, which is jointly controlled by the soil physical and topographical system characteristics, reflects the thermodynamic equilibrium state of minimum free energy the system
Appl. Sci. 2023, 13, 9534 2 of 15 deep. Kiev Metro Line 1''s Arsenal station is located in the middle of a mountain, about 105.5 m away from the ground. The Pyongyang subway in North Korea is the deepest subway system in the world, with a depth of 200 m at its
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