low grade utilization

Progress and prospects for low-grade heat recovery …

Introduction. Low-grade heat is widely distributed in geothermal energy, solar energy and factory waste heat [1], [2], [3].However, because of its characteristics of dispersed distribution and small temperature difference with the environment, there are great technical difficulties in the recovery of low-grade heat [4], [5].The huge amount of low …

A new enrichment method of medium–low grade phosphate …

The medium–low grade phosphate ore is difficult to meet market requirements due to its high content of impurities (Dong et al., 2021). At present, the medium–low grade phosphate ore is often enriched by mineral processing before the productions. ... The highly efficient utilization of phosphate tailings was achieved via this …

Microwave‐Assisted Solvothermal Synthesis of Covalent Organic

Key Laboratory of Low-grade Energy Utilization Technologies & Systems of the Ministry of Education National-Municipal Joint Engineering Laboratory for Chemical Process Intensification and Reaction School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 400044 P. R. China. Search for more papers by this …

Prospects of utilization of waste dumped low-grade …

Low grade dumped limestone sample having high silica of 8.1%, 36.8% CaO, and 3% Al 2 O 3 has been studied with the aim to reduce the silica level to below 3% for its utilization in iron making. Beneficiation study of the sample was initiated with desliming of the feed sample of −100 µm to remove the siliceous ultrafine particles and to improve the …

Update on Low-Grade Upper Tract Urothelial Carcinoma

They comprise 5% to 10% of all urothelial carcinomas and are diagnosed in approximately two per 100,000 persons in the United States annually, the majority of whom are adults older than 70 years. 1-3 A significant percentage of UTUCs are low-grade; these primarily papillary tumors are substantially less aggressive than high-grade UTUCs and ...

An electrochemical system for efficiently harvesting low-grade …

Low-grade heat sources (<100 °C) are ubiquitous, generated in energy conversion and utilization processes 1,2.Among the methods for converting this energy to electricity, thermoelectric (TE ...

Exploration of Large-Scale Application of Efficient and Clean …

In recent years, the rapid development of the domestic alumina industry has greatly accelerated the consumption of high-alumina–silica-ratio bauxite resources in China. The development of an efficient and clean utilization technology applicable to low-grade bauxite in China is not only a requirement for resource and environmental protection, but …

Low grade thermal energy sources and uses from the

They showed that the best thermal performances obtained with the monolithic carbon KOH-AC and a low grade heat source temperature of 100 °C were a COP of 0.45, 0.61 and 1.50 for the production of 66 MJ/m 3, 151 MJ/m 3 and 236 MJ/m 3 for ice making, air conditioning and heating production respectively.

Selection and optimization of pure and mixed working fluids for low

Assessment of organic Rankine cycle working fluids for low grade heat utilization. ... Trapp and Colonna [5] maximized the net power output of an ORC for low grade waste heat recovery from a pre-combustion CO 2 capture process as part of an integrated gasification combined cycle power plant. The waste heat stream was a 140 °C …

Ion Exchange Induced Efficient N‐Type Thermoelectrics in …

MOE Key Laboratory of Low-grade Energy Utilization Technologies and Systems, School of Energy & Power Engineering, Chongqing University, Chongqing, 400044 China. E-mail: [email protected]; [email protected]; [email protected] Search for more papers by this author. Ying Zhou,

Deep Utilization of Low-Grade Heat through …

Low-grade heat is a challenge for deep utilization due to its low temperature. Based on the optimization of the saturated vapor pressure of liquid desiccant in …

Light Fueled Manipulation of Bubble Motion Against …

Key Laboratory of Low-grade Energy Utilization Technologies and Systems Ministry of Education, Chongqing University, Chongqing, 400030 China. Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, 400030 China. E-mail: [email protected] Search for more papers …

Optimal design of heat pump integrated low-grade …

Low-grade heat utilization employs circulating medium for heat transfer between heat sources and sinks. Thus, it is in need to synchronously integrate heat …

Desilication and recycling of alkali-silicate solution seeded …

1. Introduction. Silicon is the main impurity in high-silica bauxite [1], [2], [3] and causes scaling on plant surfaces while affecting the quality of alumina during alumina production, using alkaline methods such as the conventional Bayer process [4], [5], [6].With the increasing demand for alumina refineries, the utilization of low-grade high-silica …

State-of-the-Art Technologies on Low-Grade Heat …

This chapter aims to provide a basic understanding of the state-of-the-art technologies including adsorption, absorption, liquid …

Analysis and optimization of a modified Kalina cycle system for low

Kalina cycle system (KCS) offers an attractive prospect to produce power by utilizing low-grade heat sources where traditional power cycles cannot be implemented. Intending to explore the potential of exploiting low-grade heat sources for conversion to electrical energy, this study proposes two modified power generation cycles based on …

Energy, exergy, economic and environmental (4E

Facing the increasingly serious global problem of energy shortage and CO 2 emissions, the recovery and utilization of low-grade waste heat have become one of the important ways to alleviate this problem. For the low-grade waste heat (90–150 °C) that is difficult to recover, a novel power/refrigeration cascade system is proposed in this work to …

System-level Utilization of Low-grade, MW-scale …

System-level Utilization of Low-grade, MW-scale Thermal Loads for Electric Aircraft | AIAA AVIATION Forum. Andrew S. White., Elias Waddington., Jason …

(PDF) Recovery and Utilization of Low-Grade Waste Heat in …

Recovery and Utilization of Low-Grade Waste Heat in the Oil-Refining Industry Using Heat Engines and Heat Pumps: An International Technoeconomic Comparison.pdf Content uploaded by Christos N. Markides

Multifunctional MOF‐Derived Au, Co‐Doped Porous Carbon …

Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education, Chongqing University, Chongqing, 400030 China. Institute of Engineering Thermophysics, School of Energy and Powering Engineering, Chongqing University, Chongqing, 400030 China. Search for more papers by this author

Design and analysis of a 1.5 kW single-stage partial …

Global warming and energy crisis are two important issues that must be solved. Low-grade energy recovery and renewable energy utilization are effective approaches for energy conservation and emissions reduction. Low-grade power systems such as organic Rankine cycle (ORC) [1], CO 2 power cycle [2], and Kalina cycle [3] are …

Utilization of low-grade waste heat-to-energy …

Published: 12 July 2016. Utilization of low-grade waste heat-to-energy technologies and policy in Indian industrial sector: a review. Bipul Krishna Saha & Basab Chakraborty. …

Novel Superaerophobic Anode with Fern‐Shaped Pd …

Key Laboratory of Low-grade Energy Utilization Technologies and Systems (Chongqing University), Ministry of Education, Chongqing, 400030 China. Institute of Engineering Thermophysics, School of Energy and Power Engineering, Chongqing University, Chongqing, 400030 China. E-mail: [email protected]; [email protected] Search …

Utilization of low-grade waste heat-to-energy technologies …

The global industrial waste heat has an enormous potential to cater to a part of the electricity demand of the world. A large amount of low-quality heat is lost as the conventional power generation techniques cannot convert this heat into electrical power (Verbruggen 2008).So, investigation on low-grade waste heat (LGWH) recycle for the …

Low grade thermal energy sources and uses from …

Thermal energy loss in the process industry is a significant issue due to the high temperatures and multiple heat intensive processes involved. High-grade thermal …

Flexible low-grade energy utilization devices based …

Abstract. With the growing global energy crisis, new methods of energy development and utilization have become the main solutions to energy issues. Solution …

Low-Grade Thermal Energy Harvesting | ScienceDirect

Low-grade waste heat (below 100°C) is widely generated throughout industrial or geothermal processes and is a particularly important source of energy that can potentially be harvested for power generation. ... Unfortunately, this promising utilization route is nearly untapped due to lack of simple, efficient, and cost-effective technologies ...

Novel Technology for Comprehensive Utilization of Low-Grade …

In this study, a novel technology for the comprehensive utilization of low-grade iron ore is presented. For the iron ore with a Fe content of 24.91%, a pilot-scale study of pre-concentration ...

Sustainable Use of Copper Resources: Beneficiation of Low-Grade …

The global market has announced copper as a modern energy metal and finds its extensive utilization in the construction industry, electrical wiring, power transmission lines, alloying, anticorrosive coating, heat exchangers, refrigeration tubing, etc. Copper ore is primarily beneficiated from sulphide mineral deposits. Due to high-grade …

Improvement of low-grade heat utilization: …

In this paper, a new concept for improving low-grade heat utilization efficiency is proposed, which relies on absorption refrigeration or solution …