## GM heat pump recovers energy from EV battery to power heating & propulsion while helping conserve range: Ultium Energy Recovery

##### 26 April 2022

GM is introducing a patented heat-pump in its Ultium-based EVs that captures and repurposes waste energy from the battery. Through the Ultium Platform’s energy recovery system, this waste energy can increase a vehicle’s range, reduce battery energy needed for heating, increase charging speed and even enable sportier driving. Covered by... Read more →

Alfa Laval is introducing the E-PowerPack waste heat recovery system for ships. Able to convert waste heat directly into electrical power, the E-PowerPack uses Organic Rankine Cycle (ORC) technology to reduce ship fuel consumption and CO2 emissions. The basic principle of an ORC system can be thought of as the... Read more →

## McMaster team reviews progress on hybrid-specific engine technologies

##### 31 December 2021

A team from McMaster University in Canada has published a comprehensive review of recent progress in low-temperature combustion (LTC), alternative fuels (AF), over-expansion Atkinson cycle, and waste heat recovery (WHR) techniques as applied to hybrid-specific engines. Their open-access paper is published in the journal Energy Reports. As a midterm technology... Read more →

Researchers at Lawrence Livermore National Laboratory (LLNL) and collaborators have used an additive manufacturing technique, called cold-spray deposition, to create thermoelectric generators that can harvest waste heat—a huge untapped resource—from previously inaccessible sources, such as pipes with complex geometries. The generators display good performance over a wide temperature range. A... Read more →

## Researchers demonstrate effective silicon-based thermoelectric generators

##### 26 August 2019

A University of Texas at Dallas physicist has teamed with Texas Instruments Inc. to demonstrate thermoelectric generators (TEGs) created using nanostructured silicon thermopiles fabricated on an industrial silicon complementary metal–oxide–semiconductor (CMOS) process line. Described in a paper in the journal Nature Electronics, these TEGs exhibit a high specific power generation... Read more →

## Carbon nanotube films created at Rice University enable method to recycle waste heat

##### 15 July 2019

Rice University scientists are designing arrays of aligned single-wall carbon nanotubes to channel mid-infrared radiation—i.e., heat—and greatly raise the efficiency of solar energy systems. Gururaj Naik and Junichiro Kono of Rice’s Brown School of Engineering introduced their technology in a paper in ACS Photonics. A Rice University simulation shows an... Read more →

Researchers at Osaka University have been able to enhance the power factor of a promising thermoelectric material by more than 100% by varying the pressure, paving the way for new materials with improved thermoelectric properties. A paper on their work is published in Physical Review Letters. In addition to improving... Read more →

The Advanced Research Projects Agency - Energy (ARPA-E) issued a funding opportunity announcement (DE-FOA-0001970) for up to $35 million for the High Intensity Thermal Exchange through Materials and Manufacturing Processes (HITEMMP) program, to develop new approaches and technologies for the design and manufacture of high temperature, high pressure, and highly... Read more → A team from Stanford University is proposing continuous electrochemical heat conversion as a direct method of harvesting heat to electricity. Using flow cells and solid-oxide cells respectively, they have built proof-of-principle heat harvesters operating both near ambient conditions, and at high temperatures. In a paper in the RSC journal Energy... Read more → Mechanical engineers at the University of California, Riverside, have successfully used inexpensive materials to produce thermoelectric devices that transform low-level waste heat into electricity. While thermoelectric generators have been highly dependable—for example powering space probes such as the Voyager spacecraft for decades—their use has been limited by the expense and... Read more → ## DOE to award$35M to 24 projects to support early-stage, innovative technologies and solutions in advanced manufacturing

A consortium led by the Dearman Engine Company has been awarded £1.86 million (US$3.12 million) in the latest round of IDP10 funding from the UK’s Technology Strategy Board to support the development of a heat-recovery system for urban commercial vehicles. The tenth competition under the Low Carbon Vehicles Innovation Platform’s... Read more → ## HeatReCar project demonstrates technical feasibility of thermoelectric generator for waste heat recovery; economic case more difficult ##### 07 April 2014 A recently completed European project coordinated by Centro Ricerche Fiat (CRF) demonstrated the technical feasibility of a Bi2Te3-based thermoelectric generator (TEG) for waste heat recovery for application to a diesel light-duty truck (LDT). The project “Reduced energy consumption by massive thermoelectric waste heat recovery in light-duty trucks” (HeatReCar) focused on... Read more → The concept of the Ricardo Split-Cycle engine. The recuperated engine uses isothermal compression via cryogenic injection to enable significant exhaust to compressed gas heat transfer. Source: Neville Jackson. Click to enlarge. Ricardo is advancing its work with two novel technologies to improve the efficiency of heavy-duty goods vehicles: a cryogenic... Read more → A simple Organic Rankine Cycle (ORC) waste heat recovery system could recover up to 10% of engine waste heat under highway driving conditions, corresponding to a potential 7% improvement in fuel consumption in a light-duty plug-in hybrid electric vehicle (PHEV), with low penalization of the added weight to the vehicle... Read more → Stack-designed cylindrical TEG, built with TE cartridges, developed for LDVs in first project. Click to enlarge. The US Department of Energy (DOE) has awarded Gentherm (formerly Amerigon) a$1.55-million contract modification to apply the technology in its thermoelectric generator (TEG) for passenger cars to a similar program for heavy vehicles.... Read more →

The MV Figaro. Click to enlarge. Opcon, in collaboration with Wallenius Marine, recently completed the first reference installation of its Waste Heat Recovery technology for ocean-going vessels in a project supported by the Swedish Energy Agency. (Earlier post.) The company has now received official approval from Lloyd’s Register for use... Read more →

Schematic representation of the 4-step low-temperature, Mn-based thermochemical cycle. Xu et al. Click to enlarge. Providing a possible new route to hydrogen-gas production, researchers at the California Institute of Technology (Caltech) have devised a new manganese-based thermochemical cycle with a highest operating temperature of 850 °C that is completely recyclable and... Read more →

## Ford study shows Rankine waste heat recovery system on a light-duty vehicle could almost meet full vehicle accessory load on highway cycle

##### 09 October 2011

An organic Rankine cycle (ORC) waste heat recovery system using R245fa as the working fluid could nearly supply the full vehicle accessory electrical load in a light duty vehicle (Ford Escape) on the EPA highway cycle in both a conventional and hybrid powertrain configuration, according to a modeling study presented... Read more →

## DOE ARPA-E awards $156M to projects to 60 projects to accelerate innovation in clean energy technologies ##### 30 September 2011 The Department of Energy’s Advanced Research Projects Agency-Energy (ARPA-E) has selected 60 research projects for up to a combined$156 million in funding from the Fiscal Year 2011 budget. The new ARPA-E selections focus on accelerating innovations in clean technology while increasing US competitiveness in rare earth alternatives and breakthroughs... Read more →

Research project Turbosteamer, Generation 2. Click to enlarge. Despite improvements in engine efficiency—e.g., with technologies such as direct fuel injection, variable valve timing, exhaust-driven turbochargers, brake energy regeneration and Auto Start Stop function—about 60% of the generated energy is still lost, half of it being exhaust heat, with the remaining... Read more →