Working Medium Flow Research Articles

Analysis on battery thermal management system based on flat heat pipe at high discharging rate

Power batteries are the core power source for electric vehicles. However, battery thermal management technology for electric vehicles will face more severe challenges in the future. Flat heat pipe has gradually received much attention in the field of battery thermal management due to its high heat conduction coefficient and lightweight structure. This paper focuses on the influence of flat heat pipe structural parameters on battery thermo-electrical performance by establishing simulation model of the battery cooling system, which makes contribution to the flat heat pipe structure design on optimizing battery overall performance. Based on the mechanism of working medium flow effect of flat heat pipe on the battery electrochemical heat generation, a coupled model of flat heat pipe-based battery system is established according to the relationship between battery electrochemical heat generation performance and flat heat pipe heat transfer characteristics. The accuracy of system model is further verified by experiment, and the battery thermo-electrical characteristics under different discharging conditions is simulated. The flat heat pipe-based battery thermal management system can effectively reduce the battery maximum temperature while improving the uniformity of battery temperature and state of charge (SOC). The reduction of the vapor chamber thickness causes the uneven distribution of vapor thermal resistance, so the battery maximum temperature and maximum temperature difference will become larger, which will further cause the uneven distribution of battery internal resistance, and this will finally increase the non-uniformity of battery module discharging current distribution. A structural design method of the flat heat pipe-based battery thermal management system is developed with the battery thermo-electrical coupling performance as the design objective and the flat heat pipe structural parameters (total thickness, vapor chamber thickness, total length) as the optimization variables. Compared with the original scheme, the battery maximum temperature can be reduced by 6.4% under transient high-rate discharging conditions with the modified flat heat pipe based on the proposed design method, while the battery maximum temperature and SOC difference can also be reduced by 18.4% and 16.3%, respectively.

Dynamic performance forecast analysis of MHP-PV/T-IDXSAHP system during heating season

MHP-PV/T is a novel PV/T with phase change heat transfer, uniform flow of working medium and good anti-freeze performance. The excellent year-round performance of MHP-PV/T has been demonstrated in previous studies and is more suitable for winter heating in northern China. In this work, we further combine MHP-PV/T with dual source heat pump to form an experimentally validated indirect expansion-solar assisted heat pump (IDX-SAHP) system and simulates the overall performance of the heating system in winter based on TRNSYS in Lanzhou, China. The component type50b of TRNSYS was modified to make it closer to the actual results of MHP-PV/T. Research shown that the thermal efficiency of MHP-PV/T heat pump system can be maintained well throughout the heating season at the SAHP/ASHP switching temperature is 7 ℃ in winter. The net system energy efficiency ratio (NSEER) during heating season is range from 3.28 to 5.42, which can achieve highly efficient and low cost heating. For this system, the photovoltaic power generation is sufficient to meet the operation of three water pumps. By connecting surplus electricity to the grid, a total of 1806.25 ¥ of electricity revenue can be obtained around the year. The PEUR of the system is 72.26 %, the DPP taking 5.133 years, and the annual CO2 emission reduction is 13486.5 kg. Significant energy, economic, and environmental benefits of the system. This study demonstrates the application prospects of PV/T heat pumps and provides a reference basis for subsequent research on MHP-PV/T heat pump systems in cold regions.

Experimental study of the effect of load and rotational speed on the electrical power of a high-speed ORC microturbogenerator

The article presents the results of the study conducted on a microturbogenerator with a nominal power of 1 kWe. One of the primary objectives of the study was to determine the maximum power of the microturbogenerator for several preset and constant flow rates of the HFE-7100 working medium. During the tests, the variable parameters were the power of the heat source and the electrical load of the microturbine generator. Such a methodological approach made it possible to determine the experimental mechanical and electrical characteristics of the high-speed microturbogenerator, which are practically absent in the subject literature at present.The study shows that, at a preset working medium flow rate, there exists an optimum heat source power level at which the microturbogenerator's power output is maximum. It was determined that the maximum electrical power also depends on the load value of the microturbine generator. At the minimum tested working medium flow rate value of 30 g/s, a maximum power of approx. 210 We was obtained with a heat source power of 12 kWt and a resistive load of approx. 6.4 Ω. On the other hand, at the same flow rate value of the HFE-7100 and a heat source power of 14 kWt, the maximum electrical power of the microturbogenerator was approximately 205 W. On the other hand, for an HFE-7100 flow rate of 60 g/s, the maximum electrical power of approximately 625 W was achieved with a heat source power of 18 kWt. It was found that the load current of the generator had a major influence on the maximum electrical power of the microturbogenerator.

Расчетно-теоретическое и экспериментальное исследования кавитационных характеристик шиберных запорно-регулирующих устройств с внутренним байпасом

Hydraulic systems include control devices that create local resistance. Decreasing and increasing the working medium pressure and flow rate in the control devices cause cavitation, vibration, noise, material destruction, increase in the energy losses and decrease in the efficiency, which adverse effects could be reduced by using a bypass. One of the important tasks in designing the control devices is establishment of the cavitation characteristics. Introduction of an internal bypass in such devices makes it possible to reduce forces on the control elements displacement and the specific pressures in opening and closing, as well as to locate the cavitation bubbles collapse point in the flow behind the control gates. The paper presents results of a computational theoretical study using a modern complex of engineering analysis and experimental determination of the cavitation characteristics of the gate wellhead device with an internal bypass.

Расчет удельных давлений в задвижках при давлениях газа до 105 МПа

In power calculation of the valves, maximum specific pressures at the gate valves are determined only in the closed position, not taking into account decrease at the sealing fields contact area between the slide valve (wedge) and the valve seats in opening, throughput characteristic of the slide valve and working medium flow rate and density. Results are provided of calculating specific pressures at the gate of the slide valve DN 150 PN 25 MPa LLC “Scientific and Production Company “MKT-ASDM” at the gas pressure drop of up to 105 MPa depending on the slide walk stroke and taking into account the gas flow rate and density using the valve actual throughput characteristics. Specific pressures of maximum values were achieved in the slide valve relative stroke range of 0.1…0.2. It is recommended to determine the specific pressure maximum value taking into account reduction in the sealing fields contact area when the wedge is raised, throughput characteristic of the sliding gate valve and the working media flow rate and density. This should be done after calculating the specific pressure with gate valve closed according to the well-known method used in the valves’ power calculation

Thermal Performance of the Evaporator in the two Phase Mechanically Pumped Cooling Loop

In the two-phase mechanically pumped cooling loop, the performance of the evaporator is very important as it directly contacts with the electronic equipment to absorb the waste heat. The evaporator with the micro channels which can enhance heat exchange is designed and it can be used to dissipate the heat generated by the electronic equipment with discrete heat sources. The effects of working medium flow rate and heating power on the performance of the evaporator were analyzed through numerical simulation. Meanwhile, the changes of evaporator performance were also investigated while the heating power changed periodically and suddenly. In addition, the flow and heat transfer process in the evaporator at the initial stage were analyzed by transient calculation. The results showed that the evaporator with micro channels can reduce the maximum temperature by 47.66% and the maximum temperature difference by 83.39% compared with the evaporator without micro channels. In addition, the evaporator showed good stability under variable power condition.

Finned coil-type energy storage unit using composite inorganic hydrated salt for efficient air source heat pumps

The imbalance between the variable power load during day and night and the energy supply of office building heating can supplement a staggering electricity economy. In this study, a novel composite inorganic hydrated salt phase change material (PCM) was fabricated with a melting temperature of 50.3 °C using CH3COONa·3H2O (the primary material), KNO3 (the eutectic material), Na2HPO4·12H2O (the nucleating agent), and carboxymethyl cellulose (CMC, the thickener) in a mass ratio of 89 %:8 %:1.5 %:1.5 %. Moreover, we developed a modular finned coil-type energy storage unit (ESU) with a PCM charging capacity of 1200 kg and a theoretical heat storage capacity of 315 MJ. Subsequently, we created an ESU test system for an air source heat pump (ASHP) operated at the valley electricity period from 23:00 to 7:00. The heat storage, heat release, and defrosting functions were tested, and the operational cost of heating for the office building was evaluated. The results reveal that the composite PCM exhibited stable thermal properties, but more accurate working medium flow matching is required to improve the heat transfer tail phenomenon. Furthermore, the ASHP-ESU reduces the defrosting time by 63 % and improves the efficiency by 6–9 % compared to conventional ASHP. The operating costs are the lowest at 4.66 CNY/month/m2 with valley electricity operation compared with the other three heating modes. Therefore, the ASHP-ESU system for office building heating in off-peak operation is an economical and sustainable approach for the power system.

Multi-parameter design and optimization of enhanced geothermal system based on unit effective permeable area

Highly efficient reservoir development and utilization is crucial for the commercial operation of enhanced geothermal systems, which involved the heat transfer between fracture and reservoir highly depends on the flow of working medium in the reservoir. However, as one key of efficient heat recovery, the reservoir utilization efficiency has not been directly described in previous multi-parameter optimization, and there is a lack of a parameter to accurately describe this property. This study aims to reveal the effective development between fractures and reservoir, based on a new proposed parameter called unit effective permeable area. Based on thermal–hydraulic–mechanical coupling model, the human-controlled parameters are optimized by combining the water loss rate, unit effective permeable area, average outlet temperature and cumulative thermal production. Results indicate that increasing injection mass flow rate and the number of artificial fracture does not always benefit to heat extraction but enlarging fluid leakage. Through the analysis of the unit effective permeable area, the water loss and power generation are comprehensively evaluated. The optimization parameters obtained in this study are as follows: the well spacing is set as 425 m, the number of fractures is set as 3, and the injection flow rate is set as 50 kg/s. The annual average effective electric power under this parameter setting is 10.06 MW. The analysis results were verified by using the existing experimental and simulation results. The new parameter can be applied to a wider range of research.

Performance prediction of a distributed Joule-Thomson effect cooler with pillars

• Heat transfer and throttling coupling is used to replace the traditional constant enthalpy throttling. • The performance of the J-T cooler is predicted by simulation. • A novel J-T cooler with multi-layer, multi-pillar micro-channels was designed. Hampson type Joule-Thomson (J-T) throttle coolers are widely used for cooling infrared detectors and many electronic components. The conventional J-T throttle coolers are not compact, with low heat transfer efficiency and small cooling capacity. In this paper, a stacked column cluster type microchannel distributed J-T throttle cooler is designed through combining a compact microchannel etched and shaped by photolithography and an atomic diffusion fusion welding process with a J-T throttle cooler. The dimensions of the cooler are 10 mm for the inlet section, 145 mm for the throttling and heat exchange section,10 mm for the expansion chamber, with 6 layers staggered high pressure channels and 6 low pressure channels. The cooling performance of the cooler under various low-temperature and high-pressure operating conditions were studied through simulations, and the results showed that the cold-end temperatures were 158.0, 147.9, 146.1, 144.1, and 141.1 K for an inlet pressure of 5.20 MPa and inlet temperatures of 280.0, 270.0, 260.0, 250.0, and 240.0 K, respectively, with argon as the work gas. The cold-end temperatures were 163.6, 159.4, 156.8, 154.6, and 152.7 K for an inlet pressure of 5.60, 6.00, 6.40, 6.80, and 7.20 MPa respectively in 288.0 K inlet temperature. In the process of working medium flow and heat transfer in the microcolumn group channel of the cooler, the temperature and pressure change significantly. When the working medium in the flow reaches the phase change state, that is, the phase change temperature and pressure reach, due to the gas liquefies and the flow rate drops, the working medium loses the gas throttling refrigeration effect, and the temperature no longer decreases significantly, and the refrigeration temperature is limited by this. In addition, compared with different inlet pressures, when the inlet temperature is 280.0 K, the 5.20 MPa nitrogen throttling refrigeration temperature is close to the argon gas at 2.98 MPa, which are 223.4 K and 234.9 K, respectively. Therefore, high pressure nitrogen can be considered to replace low pressure argon in engineering applications. In view of the problems involved in the research process of traditional micro-channel throttling coolers, the innovative solutions are put forward in this paper, which can bring new innovations and thoughts for the future research and application of such problems.

Reliability optimization design of intelligent mechanical structure for waste heat recovery

In order to solve the problems of high energy consumption and serious waste of heat energy in the cooling of traditional oil cooler in hydraulic system, the author proposed the reliability optimization design of intelligent mechanical structure for waste heat recovery. The author has built a waste heat recovery test platform for hydraulic system, the influence of electrical load, oil flow rate and working medium flow rate on system operation and energy characteristics is studied. The experimental results show that: under the same working condition, compared with the oil cooler of the same specification, the maximum thermal efficiency of the proposed organic Rankine cycle waste heat recovery system is increased to 2.56%. The expander pressure ratio and system thermal efficiency increase with the increase of electric load and oil flow rate. With the increase of the flow rate of the working medium, the superheat of the working medium at the inlet of the expander decreases significantly, while the heat exchange of the evaporator and the output power of the expander increase. Under the test condition, the maximum heat exchange of evaporator is 4.18 kW, and the maximum output power of expander is 356 W. The energy saving effect of waste heat recovery system of hydraulic system is obtained, and the influence law of operation parameters on system performance is obtained.

Improving the energy-efficiency of small-scale methanol production through the use of microturboexpander units

The issue of improving the energy-efficiency of container-based gas chemical plants for methanol production in field conditions is considered. The relevance of the direction is determined by the necessity for development of remote Arctic hydrocarbon fields. The object of research is energy-efficient conversion of waste gases energy and surplus thermal energy in small-scale system of methanol production using technology of synthesis gas generation by non-catalytic partial oxidation of natural gas. Approaches to the design and analysis of structural solutions for microturboexpander units are considered. A technique combining traditional approaches to the calculation of equipment and modeling by the finite element method in ANSYS is proposed. The developed methodology facilitates calculation of design parameters for microturboexpanders and allows taking into account peculiarities of working medium, thermobaric conditions and gas flow characteristics.

Расчетно-теоретическое исследование режимов течения рабочей среды в шиберной задвижке для технологических линий нефтегазодобывающей промышленности

Slide gate valves are widely used as shut-off and control valves in technological lines of the oil and gas industry. The most important tasks that arise when designing a gate valve include the calculation of the hydraulic characteristics of the working medium flow and the determination of throughput. The article presents an overview of the main methods for calculating the throughput of pipeline fittings, indicates their advantages and drawbacks. It proposes a method for determining the throughput and calculating the hydraulic characteristics of the working medium flow of a high-pressure slide gate valve based on a computational-theoretical study using a modern complex of engineering analysis. A mathematical model of the working medium flow was developed and a numerical calculation performed. The correctness of the operation of the mathematical model was confirmed by comparing the data of computational-theoretical and experimental research. Based on the results of calculations and assessment of their correspondence to the real flow process in the physical prototype of the slide gate valve, conclusions were drawn about the applicability of the mathematical model.

Numerical Simulation of Gas Flow Passing through Slots of Various Shapes in Labyrinth Seals

Labyrinth seals are widely used in centrifugal compressors, turbines, and many other pneumatic systems due to their simplicity of design, reliability, and low cost. The calculation scheme for the movement of the working medium in a labyrinth seal is constructed by analogy with the movement of the working medium through holes with a sharp edge. Annular and flat slots, holes, and such a factor as the shaft rotation with a calculated sector of 3 degrees were studied. The purpose of the study is to determine the flow coefficient when the working medium flows through slots of various shapes. To achieve this purpose, modeling of the working medium flow in the FlowVision software was performed. The mass flow and flow coefficients are determined for the studied slot shapes. The convergence of the calculation results was determined by comparing the values of the mass flow rate at the inlet and outlet of the slot. Differences in visualizations of the flow for the studied variants of slots were established. The resulting difference should be taken into account in practical calculations of the working medium mass flow through the slot using a conditional flow rate factor which is determined by the slot design.

Computational Fluid Dynamics Modelling and Analysis of Heat Transfer in Multichannel Dimple Plate Heat Exchanger

In the present study, Computational Fluid Dynamics is used for the heat transfer studies in the dimple, and flat plate heat exchangers. By employing water as a working medium (fluid), the same and different flow analyses were numerically studied. SOLID WORKS 2018 software was used for the study. The study primarily investigated the effect of the flow rate of hot fluid on the overall heat transfer coefficient. The study also analyzed the influence of hot fluid’s Reynolds number on cold fluid’s Nusselt number. It was observed that an increase in the mass flow rate of the hot fluid from 0.016 to 0.067 kgs-1 resulted in an increase in the heat transfer coefficient from 65 to 298 Wm-2K-1 for dimple plate heat exchanger (DPHE). Meanwhile, an increase in the Reynolds number of the hot fluid (from 200 to 1000), induced an increase in the Nusselt number of the cold fluid from 1.9 to 8.7 for DPHE. A correlation was developed to calculate the Nusselt number for the same flow analysis of the flat plate heat exchanger (FPHE). The study also compared the performance of the DPHE with that of the FPHE. The results of the same flow analysis indicated that the DPHE exhibited a Nusselt number value 39% greater than the FPHE at the highest mass flow rate of 0.067 kgs-1, while in different flow analysis, the DPHE demonstrated a Nusselt number value 41% greater than the FPHE at the highest mass flow rate of 0.067 kgs-1.

Heat and mass transfer characteristics of ultra-thin flat heat pipe with different liquid filling rates

The visualization method is used to study the heat transfer performance of ultra-thin flat heat pipe (UTFHP) with a vapor chamber thickness of only 0.8 mm under different liquid filling rates, and observe the change of vapor–liquid interface in mesh wick and the flow characteristics of working fluid in vapor chamber, which has important reference value and guiding significance for determining the optimal liquid filling rate, improving heat transfer performance and analyzing the flow of working medium in ultra-thin flat heat pipe. The experimental results show that the optimum filling rate is 15%, the working medium just fills the wick, and the thermal resistance is the smallest, which is 1.2 ℃/W. At the excessive liquid filling rates, the boiling phenomenon is observed in the heating area at 20 W, but the effect of excessive liquid filling on improving the heat transfer limit is very limited, which only increases the heat transfer limit by 4 W. Capillary limit is the key factor restricting the heat transfer limit of ultra-thin flat heat pipe. The excessive liquid forms a liquid bridge in the vapor chamber, which will hinder the vapor flow. Meanwhile, it will destroy the capillary flow of the condensing working medium, resulting in liquid accumulation in the condensing area and increasing the thermal resistance of the plat heat pipe. Under the condition of slight inclination angle, the condensed working medium accumulated in the condensation area is obviously reduced, at 45% liquid filling rate, the heat transfer limit reaches 28 W.

Analysis and Optimization of Cooling Water System Operating Cost under Changes in Ambient Temperature and Working Medium Flow

The circulating cooling water system is widely used in various industrial production fields, and its operating cost largely depends on external factors, such as ambient temperature and working medium flow. Considering the relative elevation of the heat exchanger, this study establishes a total system operation cost analysis and optimization model based on the superstructure method. The model uses ambient dry bulb temperature, ambient wet bulb temperature, and working medium flow as random variables. Water supply temperature is adopted as the decision variable, and the minimum operating cost of the system is used as the objective function. An analysis of the effect of the three random variables on the operation cost shows that the effect of ambient dry bulb temperature on the operation cost is negligible, and the effect of ambient wet bulb temperature and working medium flow on the operation cost is significant. In addition, a control equation of water supply temperature is established to determine the “near optimal” operation, which is based on the correlation among ambient wet bulb temperature, working medium flow, and optimal water supply temperature. Then, the method is applied to a case system. The operating cost of the system is reduced by 22–31% at different times during the sampling day.

METHOD FOR CALCULATING THE NUMBER OF THROTTLE ELEMENTS OF THE MULTI-TOOTH DORN

The method for calculating the parameters of the cylindrical throttling elements of the tipping teeth of a multi-toothed mandrel has been performed, which makes it possible to provide the required volume and distribution of the working medium flow supplied to the mandrel in the process of processing deep holes of long cylinders and to substantiate the division of the total flow into several different streams that provide throttling of the lubricating-cooling liquid (Coolant) when used in a lubricating and cooling technological environment (SOTS). It is assumed that the processing is carried out on the principles of combining the processes of vortex milling and surface plastic deformation (SPD) by the methods and method of helical interpolation presented in the description of the monograph. The research results based on the developed methodology for calculating the flow rate of the working medium in cylindrical throttling elements allows for further improvement of existing methods for processing deep holes, including improving the quality of high-precision precision pipes.

Simulation research of TEG-ORC combined cycle for cascade recovery of vessel waste heat

ABSTRACT The waste heat of ships has the characteristics of large temperature gradient, huge recoverable amount and various properties. Traditional technologies such as thermoelectric power generation (TEG) and organic Rankine cycle (ORC) are difficult to take into account the different characteristics of the various types of waste heat from ships. In order to realize the efficient cascade utilization of various waste heat from ships, improve the efficiency and meet the stringent requirements of the new international carbon emission regulations, a cascade recovery system of ship waste heat based on TEG-ORC (thermoelectric power generation/organic Rankine cycle) is proposed in this paper. After designing of the TEG-ORC combined cycle experimental system, the simulation research has also been carried out. The effects of TEG bottom cycle scale, ORC working medium flow rate and evaporation pressure on system net output power, system power generation cost and bottom cycle ratio (QTEG/QORC ) are studied. The results show that the TEG-ORC combined cycle overcomes the limitation of single waste heat utilization method, realizes multi-stage utilization of ship waste heat, as well as improves the utilization of waste heat. Of course, the stability and safety of ORC bottom cycle operation are also promoted. The simulation results show that when the TEG bottom cycle scale is 22 pieces, ORC working medium flow rate is 0.44 kg/s, and ORC working medium evaporation pressure is 2.2MPa, the system economy is optimal. At this time, the system power generation cost is 0.26 $/kW·h, the system net output power is 2520.3 W, and the thermal efficiency is 23.33%.

DETERMINATION OF CHARACTERISTICS OF THROTTLING DEVICE FOR PNEUMATIC SPRING

Purpose. This paper focuses on determination of the dependence of the working medium flow on the capacity of the throttling device, its geometric features and the pressure difference in the pneumatic spring cylinder and in the auxiliary reservoir. Methodology. Calculation of the dependence of the working medium and pressure drop is performed in two ways: 1) by numerical simulation of a stationary gas flow through a throttling element; 2) its analytical calculation expression using empirical relationships (control calculation to evaluate the reliability of numerical simulation results). For the calculation, three models of throttling devices were chosen. Dependence of the flow rate of the working medium on the capacity of the throttling device and its geometric features was determined based on the approximation of the dependency graphs of the pressure drop against the mass flow rate of the working medium. Findings. We obtained graphical dependencies between the pressure drop and the mass flow rate of the working medium from the two calculation options. Based on the results of calculations performed with the help of a software package with visualization of the results, we calculated a proportionality coefficient that describes the dependence of the working medium flow on the throttling device capacity and its geometric features for each of the throttling elements considered, with three degrees of closure. The air flow values, obtained by numerical simulation, are greater than the flow rates obtained from semi-empirical formulas. At the same time, they are in good qualitative agreement, and the quantitative difference averages 25%, which can be regarded as confirmation of the reliability of the nu-merical model. Based on the calculation results, we plotted the proportionality coefficient graphs against the degree of closure of the throttling device. Originality. The work allows determining the degree of influence of the frictio-nal component on the variation of the pressure difference in the pneumatic cylinder and the auxiliary reservoir of the pneumatic suspension system. Also, the work proposes a method to determine the dependence of the working medium on the capacity of the throttling device and its geometric features. Practical value. The ability to predict the operating parameters of the pneumatic system depending on the pneumatic resistance of the throttling device will improve the car running characteristics, increase the comfort of passenger transport, and also reduce the wear of the rolling stock and track gauge due to vehicle-track interaction.

Research on Solar-assisted Ocean Thermal Energy Conversion System

At present, the Ocean Thermal Energy has low circulating thermal efficiency and poor power supply stability, so it has not been widely applied. To solve this problem, the combined generation system of ocean temperature difference energy and solar auxiliary heat is proposed. The multi-curved compound trough collector absorbs solar radiation energy, and layers heat exchange and energy storage with heat storage tank using heat conduction oil as medium. Then, the hot water storage and working medium preheated by warm sea water are used for efficient heat exchange in PCHE, so as to improve the system’s power generation efficiency and improve the continuity of power supply. The Solar-assisted Ocean Thermal Energy Conversion System is established by using Aspen Plus. The theoretical calculation and simulation analysis of each part of the system were carried out, and the thermal cycle with R717 as the working medium was determined. With Sansha City of Hainan Province as the background, the design is based on the installed capacity of 130kW solar auxiliary heat ocean temperature difference power generation system to verify the feasibility of the project. The energy management device takes PLC as the core, according to the load demand and the predicted power generation, through the fuzzy PID control strategy to adjust the flow of working medium and cold and hot source, and manage the power generation system. The energy management device effectively solves the intermittent problem of OTEC cycle power generation and the lack of power performance under the condition of sudden increase of power load, and realizes the system’s all-weather stable operation. Based on the traditional form of ocean temperature difference power generation, this system proposes the integration of solar energy efficient heat collection, heat storage and ocean temperature difference energy combined power generation technology, which greatly improves the system power generation efficiency and has high popularization and application value.