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Get Price2021-4-23 · 1. Extraction can be performed at near room temperature (35-40 ° C) and under the cover of CO2 gas, which effectively prevents the oxidation and escape of heat-sensitive substances, retains biological activity intact, and has high boiling point, low volatility and easy pyrolysis The substance is extracted below its boiling temperature.
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Get Price2021-7-27 · Three main areas of biomass energy use should be highlighted: direct combustion to produce heat and electricity (solid fuel: charcoal or molding fuel), gasification to produce combustible gases (gas fuel: hydrogen, biomass gas, and biogas, etc.), and production of synthetic liquid fuels (biodiesel, biooil, methanol, ethanol and vegetable oil, etc.), which are burned to produce heat …
Get Price2020-10-1 · This is consistent with the existing conclusion that the transpiration rate reached the highest level when background temperature ranges between 20 and 30 °C, due to the stomata close under high temperature (He, Zhao et al., 2019; Moore, Clark, & Vodopich, 2003). This can be verified by the lower relative humidity reduction, …
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Get Price2020-8-24 · High‐temperature heat pump replaces traditional heater: It can provide high‐temperature hot water to heat crude oil: It can replace the traditional heating furnace and reduce energy consumption: He et al 2017 20: Frequency control technology: The output power of the motor is effectively matched with the pipe flow, which reduces …
Get Price2021-5-17 · This project uses the Peltier effect to optimize the temperature control system of the thermostat, uses semiconductors to generate temperature differences, and then forms a heat pump, uses the conversion between high and low taste energy to replace the compressor for refrigeration and temperature adjustment, and at the same time uses the gas vortex characteristics to exchange gas …
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Get PriceControlling the pyrolysis conditions such as temperature and gas atmosphere is critical to deriving the Cu 2 O/C composite with 2D morphology and high BET surface area. When the Cu-MOF precursor decomposed at higher temperatures (above 500 °C) under argon, Cu species transformed into Cu 0 and diffused to the surface of the carbon matrix.
Get Price2019-8-15 · Humidity-control materials have attracted increasing attention because of energy savings and smart regulation of indoor comforts. The current research is a successive work to face challenges, such as poor performance, limitations for large-scale production, and surface contamination. Here, we report a smart humidity-control wall …
Get Price2021-7-14 · The experiment was carried out in a greenhouse at the Forestry Ecological Experimental Station of Henan Agricultural University (34°43′N, 113°42′E), Zhengzhou, Henan, China. During the experimental period, the average temperature ranged from 20 °C (night) to 30 °C (day), the relative humidity ranged from 50% (day) to 65% (night), and ...
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Get Price2021-5-17 · This project uses the Peltier effect to optimize the temperature control system of the thermostat, uses semiconductors to generate temperature differences, and then forms a heat pump, uses the conversion between high and low taste energy to replace the compressor for refrigeration and temperature adjustment, and at the same time uses the gas vortex characteristics to exchange gas …
Get Priceheat exchange had taken. Thus, the temperature was close to the ambient temperature. The fuel energy was sufficient to evaporate the liquid from the gas, the phase concentration increased rapidly. With the development of a gas phase diffusion and evaporation of the ambient gas, the concentration of the gas had become smaller and …
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Get Price2021-7-15 · compressed gas, cryogenic liquid and metal hydride [8]. In transportation field, the compressed gas storage method is more common than other methods due to its technical simplicity, high reliability, acceptable efficiency and afford-ability [7,9,10]. Nevertheless, considering the process of fast
Get PriceControlling the pyrolysis conditions such as temperature and gas atmosphere is critical to deriving the Cu 2 O/C composite with 2D morphology and high BET surface area. When the Cu-MOF precursor decomposed at higher temperatures (above 500 °C) under argon, Cu species transformed into Cu 0 and diffused to the surface of the carbon matrix.
Get Price2019-8-15 · Humidity-control materials have attracted increasing attention because of energy savings and smart regulation of indoor comforts. The current research is a successive work to face challenges, such as poor performance, limitations for large-scale production, and surface contamination. Here, we report a smart humidity-control wall …
Get Price2020-2-27 · Biodiesel is a particularly attractive renewable fuel because it can be used in existing engines, it is environmentally friendly and it is readily synthesized from animal fats and vegetable oils. Waste oil combined with heterogeneous catalysts offers exciting possibilities for improving the economics of biodiesel synthesis. The effects of methanol influx rate, reaction temperature…
Get Price2020-3-24 · China's coal mine gas utilization rate is only at about 35%, mainly because the high-concentration gas in coal seams is not extracted before coal mining. Therefore, although the outburst risk of coal seams is eliminated, about 40% of the gas stored in coal seams is released to the mining area under the impact of extraction stress.
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Get PriceZhengzhou Dingli is a manufacturer of kitchen waste treatment equipment. It has more than ten years of project construction experience. Currently, it has built kitchen waste drying treatment projects in many areas. Dingli large-scale kitchen waste treatment equipment can quickly dispose of kitchen waste.
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Get Price2019-4-30 · Abstract Techniques for the reduction of the specific energy consumption for iron and steel making are identified and characterized to assess the potential for future energy-efficiency improvement and research and development priorities. Worldwide average specific energy consumption for steel making is estimated to be 24 GJ/tonne. …
Get Price2021-7-15 · compressed gas, cryogenic liquid and metal hydride [8]. In transportation field, the compressed gas storage method is more common than other methods due to its technical simplicity, high reliability, acceptable efficiency and afford-ability [7,9,10]. Nevertheless, considering the process of fast
Get Price2020-3-24 · China's coal mine gas utilization rate is only at about 35%, mainly because the high-concentration gas in coal seams is not extracted before coal mining. Therefore, although the outburst risk of coal seams is eliminated, about 40% of the gas stored in coal seams is released to the mining area under the impact of extraction stress.
Get PriceChina National Knowledge Infrastructure --- Download Paper. Science-Engineering (A) Recent Updated Papers. • An investigation of the disease of the Hongqingsi Grottoes and an elementary research for the prevention. • Research of efflorescent mechanism of the stone carvings in Song Imperial Mausoleums and the preventive measures.
Get Price2018-11-1 · It is further characterized by the peak low temperature (14.1 °C) during the harmattan in January and the peak high temperature (35.2 °C) in April. The ABUZ Continuous Operating Reference Station (CORS) is a Trimble NETR8 receiver type with antenna TRM59800.00. The system(s) of observations are GPS and GLONASS.
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Get Price2019-9-11 · The table in that section lists R 22 and shows that the “maximum permitted filling density (percent)” is 105. This table includes the 4BW and 4BA type cylinders, which is the DOT designation for refrigerant recovery cylinders. A ½ ton recovery cylinder with a water capacity of 1,000 pounds can be filled to 1,050 pounds of R 22.
Get PriceEEEP (International Conference on Energy Engineering and Environmental Protection) is an annually held conference for all researchers home and abroad since 2016, aiming to provide a good platform for scholars and researchers in the field of energy and environmental protection to discuss the latest developments and achievements, work …
Get PriceChina National Knowledge Infrastructure --- Download Paper. Science-Engineering (A) Recent Updated Papers. • An investigation of the disease of the Hongqingsi Grottoes and an elementary research for the prevention. • Research of efflorescent mechanism of the stone carvings in Song Imperial Mausoleums and the preventive measures.
Get Price2021-5-26 · The carboxylate-functionalized passion fruit peel (PFPCS) was an efficient and rapid biosorbent for wastewater treatment. The PFPCS exhibited excellent selectivity to the cationic dyes, where the maximum adsorption capacities for methylene blue (MB) and methyl violet (MV) were 1775.76 mg·g-1 and 3756.33 mg·g-1, respectively. And the …
Get Price2020-6-15 · Technologies for conversion of microbial energy have recently attracted interest to transform waste into bioenergy, thus addressing simultaneously environmental and energy issues. Nonetheless, actual microbial systems for energy conversion have limitations such as low rate of mass transfer, uneven energy distribution and strong …
Get PriceAt present, biomass energy accounts for 14% of the world's main energy consumption, is the fourth largest energy source after fossil energy coal, oil and gas, and is the only energy resource that can provide three forms of fuel, gas, liquid and solid, with the characteristics of wide distribution, cleanliness and renewability. Good policy …
Get Price2021-5-17 · Absorption is an effective way to control volatile organic compound (VOC) industrial air pollution, and the key variable in this process is the selection of suitable liquid absorbents to absorb as many organic pollutants as possible. The objective of this study was to prepare a series of high-efficiency absorbents with different proportions …
Get Price2020-12-28 · 1 College of Artificial Intelligence, Tianjin University of Science and Technology, Tianjin, China; 2 Population and Precision Health Care, Ltd., Tianjin, China Objectives: The use of electronic health records (EHR) for biomedical research to aid clinical decision-making has been proven to be essential, especially for the need to …
Get Price2021-3-8 · As the NIR power was reduced to 0.33 W (a level safe for applications), the temperature could reach 41 °C in 3 min. Considering that high temperature might be harmful to the nearby skin, 0.33 W ...
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