High Plant Efficiency Research Articles

Camera-based plant growth monitoring for automated plant cultivation with controlled environment agriculture

Building integrated photovoltaic thermal (BIPVT) greenhouse technology exhibits great potential to enhance crop yielding, energy harvesting, and water management for highly efficient farming and enables controlled environment agriculture (CEA) for automated plant cultivation. The proposed smart greenhouse system uses BIPVT, geothermal, image-based sensing, and control technologies for high energy efficiency and high-fidelity plant growth control. A camera-based, computer-controlled system was demonstrated to successfully monitor single and multiple food plants' growth. The growth rate over the life-cycle of the plant was automatically recorded by cameras without human interference. A novel algorithm was developed to extract the plants from the background of the image and then to measure the length from the ground to the top of the longest plant with different shapes or profiles. The growth rate was automatically generated as fundamental data for farming management and control. Because the plant growth is slow and the errors caused by image noise can be comparable with the actual growth when the interval between images is not large enough, the noise of a camera is evaluated by comparing multiple images under the same exposure condition, which is used to provide the error range of the measurements. The plant growth monitoring system will be integrated into an ongoing greenhouse project for smart greenhouse operation.

Thermodynamic Analysis and Improvement Potential of Helium Closed Cycle Gas Turbine Power Plant at Four Loads

This paper presents thermodynamic and improvement potential analyses of a helium closed-cycle gas turbine power plant (Oberhausen II) and dominant plant components at four loads. DESIGN LOAD represents optimal operating conditions that cannot be obtained in exploitation but can be used as a guideline for further improvements. In real plant exploitation, the highest plant efficiency is obtained at NOMINAL LOAD (31.27%). Considering all observed components, the regenerator (helium-helium heat exchanger) is the most sensitive to the ambient temperature change. An exact comparison shows that the efficiency decrease of an open-cycle gas turbine power plant during load decrease is approximately two and a half or more times higher in comparison to a closed-cycle gas turbine power plant. Plant improvement potential related to all turbomachines leads to the conclusion that further improvement of the most efficient turbomachine (High Pressure Turbine—HPT) will increase whole plant efficiency more than improvement of any other turbomachine. An increase in the HPT isentropic efficiency of 1% will result in an average increase in whole plant efficiency of more than 0.35% at all loads during plant exploitation. In the final part of this research, it is investigated whether the additional heater involvement in the plant operation results in a satisfactory increase in power plant efficiency. It is concluded that in real exploitation conditions (by assuming a reasonable helium pressure drop of 5% in the additional heater), an additional heating process cannot be an improvement possibility for the Oberhausen II power plant.

Robust & nonlinear control of an ultra-supercritical coal fired once-through boiler-turbine unit in order to optimize the uncertain problem

The ultra-supercritical once-through boiler (OTB) unit is an advanced power generation technology with high plant efficiency and low emissions. However, it is difficult to realize a coordinate control for the ultra-supercritical OTB unit to achieve the fast and stable dynamic response during the load tracking and grid frequency disturbances and in the presence of unavoidable uncertainties. In this paper, an accurate grey box multivariable coupled nonlinear model of an ultra-supercritical boiler-turbine unit is considered. Steam pressure at throttle valve, specific enthalpy in separator and active power are adjusted at desired values by manipulation of the fuel rate command, feedwater rate command and throttle valve opening. In addition to the mentioned accurate model, limitations of operational parameters and uncertainty sources are considered in the controller design. This makes this research unique from previous works. According to affine nonlinear control theory, a nonlinear robust sliding mode controller is developed. Then using MATLAB μ - DK iteration syntax, a linear H-infinity (H∞) robust control is synthesized with selecting proper weight functions. This method is suitable for all types of power plants with a similar mathematical modeling approach. Simulations in MATLAB Simulink toolbox reveals that both designed controllers achieve appropriate performance in the presence of uncertainties and parameters’ limitations, but nonlinear controller has better performance. Finally, deficiencies of a linear controller with respect to the proposed designed robust controllers are denoted.

Modelling a Prototype of Bidirectional Substation for District Heating with Thermal Prosumers

The performance of the innovative configurations of the “efficient” thermal networks is a key topic in scientific research, focusing on distribution temperatures and integration with high-efficiency plants and renewable sources. As it already happens for the electricity prosumers, a thermal prosumer may feed the district heating network through a bidirectional exchange substation with the excess of the locally produced thermal energy (e.g., by means of solar thermal plant) or with the waste heat recovered in the industrial processes. The Italian National Agency for New Technologies, Energy and Sustainable Economic Development (ENEA) and the Alma Mater Studiorum University of Bologna (UNIBO) designed a bidirectional substation prototype, based on a return-to-supply configuration, and tested steady-state and dynamic conditions to evaluate performances and optimization measures. In this paper, the Modelica language and Dymola software were used to run a multi-domain simulation and model-based design of the substation, starting from a new heat exchanger model featuring variable efficiency, based on the thermal resistance scaling method. Control systems and components were customized from models in standard libraries in order to reproduce the substation behavior under defined operating settings, and the model was validated on the abovementioned experimental tests. Numerical results in terms of exchanged powers, temperatures and flow rates were systematically compared to experimental data, demonstrating a sufficient agreement. In particular, the absolute mean deviation—in terms of temperature—between experimental and numerical data assessed over the entire tests remains contained in +/−1 °C. As further step of the analysis, an optimized model could be included as a component in a district heating network for further investigations on the prosumers’ effects on an existing traditional grid (e.g., in case of deep renovation of urban areas connected to district heating and/or creation of micro energy communities).

Open Source District Heating Modeling Tools—A Comparative Study

Heating networks are highly relevant for the achievement of climate protection goals of urban energy systems. This is due to their high renewable energy potential combined with high plant efficiency and utilization rates. For the optimal integration and sector coupling of heating networks in holistic urban energy systems, open source energy system modeling tools are highly recommended. In this contribution, two open source approaches (the “Spreadsheet Energy System Model Generator”-integrated DHNx-Python module (DHNx/SESMG) and Thermos) are theoretically compared, and practically applied to a real-world energy system. Deviations within the results can be explained by incorrectly pre-defined parameters within Thermos and cannot be adjusted by the modeler. The simultaneity is underestimated in the case study by Thermos by more than 20%. This results in undersized heating plant capacities and a 50% higher number of buildings connected to the network. However, Thermos offers a higher end-user usability and over 100 times faster solving. DHNx/SESMG, in contrast, offers the possibility to adjust more model parameters individually and consider multiple energy sectors. This enables a holistic modeling of urban energy systems and the model-based optimization of multi-sectoral synergies.

The era of cultivating smart rice with high light efficiency and heat tolerance has come of age.

How to improve the yield of crops has always been the focus of breeding research. Due to the population growth and global climate change, the demand for food has increased sharply, which has brought great challenges to agricultural production. In order to make up for the limitation of global cultivated land area, it is necessary to further improve the output of crops. Photosynthesis is the main source of plant assimilate accumulation, which has a profound impact on the formation of its yield. This review focuses on the cultivation of high light efficiency plants, introduces the main technical means and research progress in improving the photosynthetic efficiency of plants, and discusses the main problems and difficulties faced by the cultivation of high light efficiency plants. At the same time, in view of the frequent occurrence of high-temperature disasters caused by global warming, which seriously threatened plant normal production, we reviewed the response mechanism of plants to heat stress, introduced the methods and strategies of how to cultivate heat tolerant crops, especially rice, and briefly reviewed the progress of heat tolerant research at present. Given big progress in these area, the era of cultivating smart rice with high light efficiency and heat tolerance has come of age.

Predictable NHEJ Insertion and Assessment of HDR Editing Strategies in Plants.

Canonical CRISPR-Cas9 genome editing technique has profoundly impacted the fields of plant biology, biotechnology, and crop improvement. Since non-homologous end joining (NHEJ) is usually considered to generate random indels, its high efficiency mutation is generally not pertinent to precise editing. Homology-directed repair (HDR) can mediate precise editing with supplied donor DNA, but it suffers from extreme low efficiency in higher plants. Therefore, precision editing in plants will be facilitated by the ability to predict NHEJ repair outcome and to improve HDR efficiency. Here, we report that NHEJ-mediated single nucleotide insertion at different rice genes is predictable based on DNA sequences at the target loci. Three mutation prediction tools (inDelphi, FORECasT, and SPROUT) have been validated in the rice plant system. We also evaluated the chimeric guide RNA (cgRNA) and Cas9-Retron precISe Parallel Editing via homologY (CRISPEY) strategies to facilitate donor template supply for improving HDR efficiency in Nicotiana benthamiana and rice. However, neither cgRNA nor CRISPEY improved plant HDR editing efficiency in this study. Interestingly, our data indicate that tethering of 200–250 nucleotides long sequence to either 5′ or 3′ ends of guide RNA did not significantly affect Cas9 cleavage activity.

Techno-economic feasibility of a biomass-to-X plant: Fischer-Tropsch wax synthesis from digestate gasification

A techno-economic analysis is performed, assessing the production costs of Fischer-Tropsch syncrude and waxes of carbon number C20+. The products are obtained from the gasification of digestate from anaerobic digestion inside a dual fluidized bed gasifier (3.11 MWth). The results are compared against the same system fed with lignocellulosic biomass. The syngas is cleaned from impurities and conditioned to reach the desired H2/CO molar ratio of 1.8 at the inlet of the Fischer-Tropsch reactor. The Fischer-Tropsch products distribution is based on experimental data of a cobalt-based catalyst. Two process configurations are studied: (1) the Fischer-Tropsch off-gas are employed to produce electricity; (2) the off-gas are recirculated to the gasifier for enhanced wax production. Co-production of steam is also investigated. The results show an advantageous production of Fischer-Tropsch compounds utilizing digestate over wood biomass. The highest plant efficiency (i.e., biomass-to-liquid fuel) of 56.3% is reached with digestate feedstock and off-gas recirculation, outputting 61.5 kgwax/tdig. The minimum wax production cost is of 3.04 €/kgwax, assuming 7.5% discount rate and 25-years plant operation.

Impactul împăduririlor artificiale asupra calităţii aerului. Principii de dezvoltare durabilă

Recent studies suggest that the level of pollutants emitted into the atmosphere can be significantly reduced by employing environmental policies and strategies regarding the use of renewable energy sources, alternative fuels, high energy efficiency plants and equipment, as well as the implementation of a program for afforestation and creation of green spaces for CO2 absorption, retention of fine powders and release of oxygen into the atmosphere. The current paper analyses the above-mentioned environmental strategy, starting from the assumption that the development of an afforestation program contributes to the retention of fine powders and implicitly to the release of a greater quantity of oxygen in the atmosphere, being the starting theory tested through an econometric model. Through this econometric model, the relationship between air quality and the surface of the land on which artificial regeneration was performed will be studied, using panel data for a number of 41 counties in Romania. The results of this analysis highlight that artificial forests have a positive impact on air quality, but the effects are visible after a certain time lag because forests are slowly renewable resources. For these reasons, it should be emphasized that the afforestation program must be doubled by the rational exploitation of this extremely precious resource, the forest, combined with the reduction of emissions of polluting elements. As a consequence, significant air quality improvement can be achieved.

Environmental performance of high-efficiency natural gas combined cycle plant

ABSTRACT The aim of this paper is to assess the environmental impact of electricity production from one of the best available gas-fired power plants and to compare it with the current mix of electricity and the supply of electricity from a typical gas plant. The scope of the paper includes gas field exploration, natural gas processing, pipeline transportation, and electricity generation as well as construction and decommissioning of the plant. The influence of efficiency of the plant and natural gas supply from different countries on the results is explored within the sensitivity analysis. The findings indicate that the global warming potential is estimated at 388 g CO2 eq./kWh. The natural gas system described offers major improvements in all considered environmental impacts compared to the typical natural gas electricity generation system, ranging from 4.9% for abiotic depletion potential to 82.1% for acidification potential. Increasing the contribution of natural gas in the electricity mix would reduce only eutrophication, human toxicity, freshwater, and marine aqua ecotoxicity potentials. The lower environmental impacts in this paper are due to the different gas composition, relatively high efficiency assumed as well as the proximity of Turkey to Azerbaijan which reduces transport distances. The results of this study would be of benefit to the future energy market, as natural gas is one of the electricity-producing plants promoted in Turkey.

A system dynamics model to analyze future electricity supply and demand in Iran under alternative pricing policies

Ensuring sustainable electricity supply is a key issue facing decision-makers. Due to its impact on system reliability, balancing supply and demand is essential. Electricity subsidy policies in many countries have led to high consumption and low power plant efficiency, and may cause an imbalance in the future. This research analyzes different electricity subsystems using system dynamics to investigate how and when low energy prices lead to an unstable situation. Simulation results using Iran's data show demand surpasses supply with a continuation of current trends. However, when the prices increase 90%, demand is met, and subsidy decreases by about 20%.

A high quantum efficiency plant growth LED by using a deep-red-emitting α-Al2O3:Cr3+ phosphor.

Although it has been extensively studied for decades, the α-Al2O3:Cr3+ phosphor has rarely been investigated for horticultural lighting. In this work, for the first time, a prototype of a plant growth light-emitting diode (LED) has been fabricated by coating a deep-red-emitting α-Al2O3:Cr3+ phosphor onto a near-ultraviolet (NUV) chip. The α-Al2O3:Cr3+ phosphor, synthesized by a co-precipitation method and annealed at 1500 °C for 2 h, emits an outstanding narrow peak at 695 nm. The α-Al2O3:0.6%Cr3+ phosphor shows a high activation energy of 0.29 eV, a long lifetime of 3.4 ms, and a superior color purity of 100%. The chromatic coordinates and the QE value of the red LED obtained by coating an α-Al2O3:0.6%Cr3+ phosphor on a NUV chip are (x = 0.5650, y = 0.2429) and 87.1%, respectively.

The energy future of Saudi Arabia is not batteries and photovoltaic solar panels

Recently, North European academics claimed that “Saudi Arabia can accomplish a 100% renewable energy by 2040 that is overwhelmed by PV single-axis following and battery storage”. They moreover say “Battery capacity contributed up to 30% of the full power request in 2040 and the commitment increments to 48% by 2050”. Based on geology, climate conditions, and resources of Saudi Arabia, it is clarified as batteries and photovoltaic solar panels are not the best choice for the country’s energy sector. To cover all the energy supply of Saudi Arabia by solar photovoltaic, plus battery capacity to compensate for the solar energy fluctuations, and unpredictability, is not convenient, for both the economy and the environment. Superior results for the environment and the economy may be accomplished by valorising the fossil fuel assets, through the development of high-efficiency plants such as the combined cycle gas turbine plants of Qurayyah, the advancement of innovations for the generation of clean power, counting oxyfuel combustion and carbon capture and storage, and also developing nuclear energy. The development of nuclear power plants may be more advantageous to the economy and the environment than photovoltaic and batteries. Concerning solar energy, parabolic trough solar thermal power plants also along the coast have advantages versus solar photovoltaic, as thermal energy storage could provide dispatchability. Additionally, a centralized power plant works better than many rooftops photovoltaic that will be likely covered by sand, rusted, or cracked after a few years.

Experimental study on the falling and coalescence characteristics of droplets under alternating electric fields

Droplet–interface collision coalescence is an important pattern of phase separation, especially for removing water from water-in-oil emulsions in electrostatic dehydrators. Deformation, migration to the interface, and coalescence of droplets driven by electric fields are fundamental processes but have not been completely understood. In this work, we studied the influences of three typical alternating current or pulsed electric fields on these dynamic processes of a single water droplet falling to the planar oil-water interface. The results depicted that the falling droplet oscillated in both shape and trajectory in an electric field. Specifically, the deformation of droplets should be able to follow the change of electric fields, while the migration may lag behind that. The pattern of droplet deformation matched the electric field waveform, and the frequency had different multiple relationship with the electrical frequency in the electric field of different waveforms. Moreover, the increment of electrical frequency could reduce the degree of droplet deformation and extend the falling time required for droplets to reach the interface. When the droplet coalesced with the interface, secondary droplets were observed if the applied electric field strength exceeded a critical value (Ecrit), detrimental to dehydration efficiency. Ecrit varied from different electric field waveforms and increased with elevated electrical frequencies. Compared to sinusoidal AC and square electric fields, the values of Ecrit in a pulsed DC electric field were highest in the experiments which could be more effective in suppressing the formation of secondary droplets. These findings will be useful for designing high efficient electro-dehydration plants.

High efficiency plant regeneration and genetic fidelity of regenerants by SCoT and ISSR markers in chickpea (Cicer arietinum L.)

High efficient and repeatable in vitro regeneration protocol was established from embryo axis, half-seed, axillary meristem, and cotyledonary node explants of chickpea. Various concentrations and combinations of various plant growth regulators (PGRs) were employed to induce multiple shoots, shoot elongation and rooting of shoots to obtain complete plantlets of chickpea. The pretreatment of seeds with 6-benzyl aminopurine (BAP) at 1.0 mg l−1 was found to significantly increase the multiple shoot regeneration from the all explants tested. Among three PGRs such as BAP, kinetin (KIN) and thidiazuron (TDZ) tested for multiple shoot induction; BAP at 2.0 mg l−1 produced the maximum number of shoots in all tested explants. The maximum number of shoots (48.80 shoots/explant) was attained from the embryo axis explant followed by half-seed (32.76 shoots/explant), axillary meristem (28.34 shoots/explant) and cotyledonary node explant (18.47 shoots/explant) on medium augmented with 2.0 mg l−1 BAP along with 0.05 mg l−1 Indole-3-butyric acid (IBA). The optimum percentage of shoot elongation response was recorded (96.68%) on medium fortified with IAA (0.05 mg l−1), GA3 (1.0 mg l−1) and BAP (1.0 mg l−1) with an average shoot length of 8.82 cm. The elongated shoots were successfully rooted in medium augmented with 2.0 mg l−1 IBA. The complete plants were acclimatized in the greenhouse with a survival rate of 72%. The plantlets regenerated from four explants appeared to be morphologically similar to mother plants. The genetic fidelity of in vitro regenerated plants was evaluated using Start Codon Targeted and Inter simple sequence repeats molecular markers. The in vitro regenerated plants from all four explants were found to be the true to type with their mother plant. The in vitro protocol presented in the study should offer as a feasible system for chickpea genetic transformation. An efficient and reproducible in vitro regeneration protocol was established for chickpea. Application of different concentrations and combinations of PGRs was found to enhance multiple shoot induction, shoot elongation, rooting and acclimatization of in vitro regenerated plants in field conditions, and further evaluated genetic fidelity using molecular markers.

The energy future of Saudi Arabia

In a recent publication, North European experts argue that “Saudi Arabia can achieve a 100% renewable energy power system by 2040 with a power sector dominated by PV single-axis tracking and battery storage”. They also say “Battery storage contributed up to 30% of the total electricity demand in 2040 and the contribution increases to 48% by 2050”. Based on considerations specific to the geography, climate conditions, and resources of Saudi Arabia, it is explained as batteries and photovoltaic solar panels are not the best choice for the country's energy sector. To cover all the total primary energy supply of Saudi Arabia by solar photovoltaic, plus battery storage to compensate for the sun's energy intermittency, unpredictability, and seasonal variability, is impracticable and inconvenient, for both the economy and the environment. Better environment and economy may be achieved by further valorizing the fossil fuel resources, through the construction of other high-efficiency plants such as the combined cycle gas turbine plants of Qurayyah, development of novel technologies for the production of clean fuels and clean electricity, including oxyfuel combustion and carbon capture and storage. Construction of nuclear power plants may also be more beneficial to the economy and the environment than photovoltaic and batteries. Regarding solar energy, enclosed trough solar thermal power systems developed along the coast have much better perspectives than solar photovoltaic, as embedded thermal energy storage is a better approach than battery storage. Further, a centralized power plant works better than distributed rooftop photovoltaic installations covered by dust and sand, rusted or cracked. Finally, pumped hydro energy storage along the coast may also have better perspectives than battery storage.

PROSPECTS OF MODERNIZATION OF THE UKRAINIAN GAS TRANSPORT SYSTEM WITH REGENERATIVE GAS TURBINE POWER PLANTS

Nearly 64% of gas compressor units (GCUs) of the Ukrainian Gas Transport System (GTS) are equipped with gas turbine power plants (GTPPs), and their total capacity amounts to 83,4% of the power of all drive motors. Most of these GTPPs have already exceeded a life cycle and become out-of-date. Their average performance efficiency stands at 24-25%. The current state of the Gas Transport System demands immediate measures aimed at increasing its reliability and efficiency. At the first stage of modernization of the gas turbine power plants park, it is reasonable to extend the life of regenerative gas turbine power plants by 50-60 thousand hours, replacing their plate regenerators with new high-efficiency and reliable tubular heat exchangers. Recommended regenerator parameters: thermal efficiency 0.82; total relative loss of working fluid pressure 0.035. This will increase the efficiency to 31.2 % (instead of the existing 20–21.3 %), resulting in decreasing of the total fuel consumption for drive gas turbine power plants by 7.4%. At the same time, the weight of the plant will increase by 40% compared to the GTPPs with a base plate regenerator, but it can be reduced by using tubular surfaces profiled with dimples (the weight of the regenerator will decrease by 15-20%, the weight of the plant – by 6-14%). Replacement of the out-of-date GTPPs with modern high-efficiency plants is the second stage of modernization. The use of new regenerative plants with an efficiency of 40.3% will reduce the total fuel consumption on GCUs by 3.0% at modernization of the 16 MW GTPPs, by 18.1 % at modernization of the 10 MW GTPPs, and by 4.2 % at modernization of the 6 MW GTPPs. Recommended regenerator parameters: thermal efficiency 0.837; total relative loss of working fluid pressure 0.032. The total fuel economy for the gas turbine drive of the GCU due to the use of the regenerative GTPPs can be estimated within the range from 10.4 % to 25.3 %.

Techno-economic analysis of the effects of heat integration and different carbon capture technologies on the performance of coal-based IGCC power plants

Coal-based Integrated Gasification Combined Cycle (IGCC) power plants show obvious gains over conventional pulverized coal power plants by achieving higher efficiency, lower carbon emissions and lower energy penalty for incorporating different carbon capture and storage (CCS) technologies. However, due to the lack of standardised designs, current IGCC-CCS projects are hindered by higher capital expenditures limiting their commercial implementation. Therefore, the key challenge is carrying out a techno-economic optimisation of IGCC-CCS power plants to ensure compatible power generation efficiency and accessibility. This study aims to optimise the performance of a coal-based IGCC plant with two different CCS technologies (double-stage Selexol absorption cycle and Ni-based chemical looping combustion (CLC) process) through intensive process simulation, heat integration and economic analysis. Heat integration has increased the net plant efficiency by more than 12% and decreased the levelised cost of electricity (LCOE) no less than 5 cents kWh−1. The CLC technology offered near-zero carbon emissions with higher plant efficiency and lower value of LCOE. Decreasing the CO2 capture rate by Selexol caused a decrease in LCOE and an increase in the corresponding CO2 specific emissions. Therefore, an appropriate decarbonisation scenario depends on a trade-off between the degree of carbon capture and the allowed CO2 specific emissions.

Deepening Supply-Side Structural Reforms in Coal Power with a Power Market

ABSTRACT The new round of reforms in power system gradually liberalizes the wholesale market for power generation, but the current average dispatch model does not support the new market system. We use Guangdong Province as a case study to analyze the cost of new entry (CONE) and net revenue of new and old coal power plants. We find that the real CONE of low-efficiency plants that were put into production earlier is significantly lower than that of the new high-efficiency plants. Meanwhile, the fact that net revenues are higher for low-efficiency plants than high-efficiency plants has led to distortion in the incentives aimed at retiring old low-efficiency plants from the market, and new investment is economically justified under existing market rules. By simulating a market system, we find that the “scarce returns” of peak plants are depressed because of excessive capacity, which leads to losses from all coal power plants. Accelerating market reforms, including reshaping the market mechanism of short-term operations and long-term investment decision-making is key to the successful implementation of supply-side reform policies. They are important for ensuring both economic operations in the short-run wholesale market and the long-term sufficiency of the power supply via careful regulatory mechanisms.

Novel red-emitting CsPb1−xTixI3 perovskite QDs@glasses with ambient stability for high efficiency white LEDs and plant growth LEDs

Currently, the application of all-inorganic cesium lead halide perovskite (CsPbX3, X = Cl, Br, I) quantum dots (QDs) is limited due to toxicity of lead and poor ambient stability. In our work, a series of Ti-doped CsPbI3 QDs were successfully prepared in borosilicate glass (SiO2-B2O3-ZnO) by the melt quenching and in situ crystallization technique. The samples showed excellent water/thermal stability, and the tunable emission (650–695 nm) was controlled by different Ti contents and heat treatment temperatures. In particular, the optical properties of CsPb1−xTixI3 QDs@glasses (x ≤ 0.5) are superior to those of pristine CsPbI3 QDs@glass. As a result, the wLED was assembled using red-emitting CsPb1−xTixI3 QDs@glasses and yellow-emitting Ce3+:YAG phosphor under excitation of InGaN blue chip, which demonstrated an outstanding luminous efficiency of 102.44 lm/W, a high color rendering index of 80.6. Particularly, Ti-doped CsPbI3 QDs@glasses with red and far-red light are combined with a blue-chip to assemble an LED device, which exactly satisfies the lighting conditions of plant growth.