Optimization of solar thermal systems with a thermocline storage tank

Jadhav, Indrajeet B.; Bose, Manaswita; Bandyopadhyay, Santanu

doi:10.1007/s10098-020-01849-4

Cited by 15 publications

(5 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Because water-based collectors might freeze, this is a common occurrence [12]. When developing an environmentally friendly, efficient, and low-cost solar water heating system, the choice of a working fluid is critical [7,8]. is fluid must also perform well at low temperatures.…”

Section: The Use Of Supercritical Carbon Dioxide As Amentioning

confidence: 99%

“…Except for the evacuated solar collector, the other elements of the CO 2 -based circulation loop have a maximum permitted operating pressure of 10 MPa apiece. Figure 4 depicts a CO 2 -based loop that does not make use of the feed pumps [6,7]. Controlling the flow rate of CO 2 over 60 °C requires the use of valve 1.…”

Section: Proposed System For the Swh System Usingmentioning

confidence: 99%

“…where M w denotes the mass of water contained within the storage tank, T po and T pi denote the temperatures of the water entering and exiting the storage tank [7], and C p represents the specific heat of the water [30].…”

Section: Governing Equationsmentioning

confidence: 99%

“…As shown in Figure 1, in the CO 2 phase diagram, the triple point is −56.6 °C and 0.52 MPa, whereas the saturation pressure is 3.5 MPa when the temperature is 0 °C. Because CO 2 has a lower critical temperature and a higher decreased pressure than typical refrigerants, the low-side circumstances are considerably closer to the pivotal stage [7].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Scrutiny of Solar Water Heating System Employing Supercritical Fluid

Algarni

Tirth

Alqahtani

et al. 2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

This paper proposes a solar collector that utilizes supercritical CO2 as the working fluid to detect implicit water heating and boost the collector’s heating rate efficiency. Solar water heating system efficiency, cost, and environmental friendliness all depend on the working fluid used. CO2 is a possible natural refrigerant replacement. Even a little increase in temperature or pressure may have a big impact on the density of CO2 at the critical point. Because of this, solar heating can readily generate a spontaneous convection flow of supercritical carbon dioxide. The most basic collector characteristics, such as CO2 pressure and temperature, were determined by building and testing an experimental setup using a CO2-based solar collector. Due to solar radiation, liquid, gas, or supercritical CO2 pressures and temperatures change throughout the test. There was a 50% time average collector efficiency (ηcol) and a 30% heat recovery efficiency (ηRE). Solar thermal collectors based on supercritical CO2 have now been shown in this paper. Since the results show that even though the solar energy is low, the CO2 temperature, pressure, and supercritical stress remain constant, this is distinct from conventional liquid-based solar collectors.

show abstract

Section: The Use Of Supercritical Carbon Dioxide As Amentioning

confidence: 99%

Section: Proposed System For the Swh System Usingmentioning

confidence: 99%

Section: Governing Equationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Scrutiny of Solar Water Heating System Employing Supercritical Fluid

Algarni

Tirth

Alqahtani

et al. 2022

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…Currently, the storage and transport, and metering of crude oil do not pay much attention to the temperature change and stress state of the crude oil in storage tank [1][2][3]. The accurate metering of crude oil relies on the precision of temperature measurement [4][5][6]. According to the theories of heat transfer and thermodynamics, the inlet and outlet pipes and heating coils of crude oil storage tank (COST) all have an impact on the temperature field of the crude oil in the tank [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Tank Wall Thermal Stress Analysis and Risk Prevention and Control of Crude Oil Storage Tank

Zhao¹

2021

IJHT

View full text Add to dashboard Cite

If the crude oil in storage tank is directly heated without considering its temperature distribution, several problems will occur, namely, the thermal expansion of crude oil, and the uneven thickness of the condensate layer, bringing difficulty to the safe management of crude oil storage and transport. However, few scholars have analyzed the temperature field distribution of crude oil storage tank (COST) under heating, or the internal force of COST under static force. Thus, this paper probes into the thermal stress of tank wall, and the risk prevention and control of COST. Firstly, the heat transfer properties of COST were analyzed, an energy balance model was constructed for COST, and several variables were selected to evaluate the heat transfer effect of the tank under different heating modes, including thermal design power, temperature rise rate, and heat energy utilization rate. Next, the cross-section of COST wall was selected for thermal stress analysis. Based on the extremes of circumferential and vertical thermal stresses, the weak parts of COST susceptible to risks like leakage were determined, and several measures and suggestions were presented for reducing the risks of crude oil storage and transport.

show abstract