Low-grade thermal energy utilization: Technologies and applications

Ji, Dongxu; Liu, Guokun; Romagnoli, Alessandro; Rajoo, Srithar; Besagni, Giorgio; Markides, Christos N.

doi:10.1016/j.applthermaleng.2024.122618

Cited by 5 publications

(1 citation statement)

References 63 publications

(35 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is because many studies-after a priori defining the temperature levels-report the waste heat availability for entirely different, arbitrarily chosen temperature ranges. However, good agreement can be observed in that most of the waste heat is available at low or low-to-medium temperatures, generally in the range of 100-300 • C (see, e.g., [34]). A detailed breakdown of the actual origins of waste heat, i.e., the processes that generate it, is provided in Section 4.…”

Section: Waste Heat Stream Temperaturementioning

confidence: 91%

Industrial Waste Heat Utilization in the European Union—An Engineering-Centric Review

Turek,

Kilkovský,

Daxner

et al. 2024

Energies

View full text Add to dashboard Cite

The efficient utilization of waste heat from industrial processes can provide a significant source of energy savings for production plants, as well as be a driver of sustainable operations and the abatement of emissions. Industrial waste heat usually is contained in liquid or gaseous outlet streams. Although the possible ways to utilize waste heat are discussed in a wide variety of papers, these either provide only a general overview of utilization options and opportunities or focus on a narrow range of industrial processes. The aim of the present paper is to discuss the practical aspects of waste heat utilization in the European Union so that the reader can gain perspective on (i) the thermal classification of waste heat, (ii) liquid and gaseous waste streams and their typical temperatures for industrial use cases, (iii) the technical, economic, physical, and environmental aspects barring full utilization of the available waste heat, (iv) waste heat sources in various industries, and (v) standardized equipment and technologies applicable to industrial waste heat utilization, including their advantages, disadvantages, and weak points.

show abstract

Section: Waste Heat Stream Temperaturementioning

confidence: 91%

Industrial Waste Heat Utilization in the European Union—An Engineering-Centric Review

Turek,

Kilkovský,

Daxner

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

Composites with Synergistically Enhanced Thermodynamic and Mechanical Properties for Geothermal Heat Exchangers

Wan,

Wang,

Yue

et al. 2024

Adv Eng Mater

View full text Add to dashboard Cite

Geothermal energy, derived from the radioactive decay of elements within the Earth's core, is a renewable and clean energy source. The extraction of geothermal energy primarily depends on ground heat exchangers. To address the issue of incompatibility between corrosion resistance, high thermal conductivity, and mechanical performance in current ground heat exchangers, this study develops composites (PEPOE/SCA@SiC) composed of high‐density polyethylene (HDPE) modified with toughener polyethylene‐octene copolymer elastomer (POE) and silicon carbide (SiC) crystals modified with γ‐aminopropyltriethoxysilane (SCA). HDPE offers excellent corrosion resistance, SiC crystals provide efficient phonon transport, and SCA improves the interface compatibility of the composite. The thermal conductivity of PEPOE/SCA@SiC reaches 3.83 W m−1K−1, with a maximum tensile strength of 20.3 MPa, a tensile elastic modulus of up to 498 MPa, and a maximum bending stress of 22.2 MPa with a bending elastic modulus of 561 MPa. Corrosion resistance tests indicate no signs of corrosion in PEPOE/SCA@SiC when exposed to geothermal simulation fluids at 90 °C for 30 days. This study demonstrates that PEPOE/SCA@SiC composites have substantial potential for application in ground heat exchangers, offering promising prospects for advancing sustainable use of geothermal energy and environmental protection.

show abstract

Thermal performances and invisible thermal barrier formation mechanism of arc-shaped metal-fin-enhanced thermally activated building envelopes with directional heat charging feature

Yang,

Chen,

Zhang

et al. 2024

Build. Simul.

View full text Add to dashboard Cite

Low-grade thermal energy utilization: Technologies and applications

Cited by 5 publications

References 63 publications

Industrial Waste Heat Utilization in the European Union—An Engineering-Centric Review

Industrial Waste Heat Utilization in the European Union—An Engineering-Centric Review

Composites with Synergistically Enhanced Thermodynamic and Mechanical Properties for Geothermal Heat Exchangers

Thermal performances and invisible thermal barrier formation mechanism of arc-shaped metal-fin-enhanced thermally activated building envelopes with directional heat charging feature

Contact Info

Product

Resources

About