This paper reviews the development of clean vehicles, including pure electric vehicles (EVs), hybrid electric vehicles (HEVs) and fuel cell electric vehicles (FCEVs), and high energy power batteries, such as nickel metal hydride (Ni-MH), lithium-ion (Li-ion) and proton exchange membrane fuel cells (PEMFCs). The mathematical models and thermal behavior of the batteries are described. Details of various thermal management techniques, especially the PCMs battery thermal management system and the materials thermal conductivity, are discussed and compared. It is concluded that the EVs, HEVs and FCEVs are effective to reduce GHG and pollutants emission and save energy. At stressful and abuse conditions, especially at high discharge rates and at high operating or ambient temperatures, traditional battery thermal energy management systems, such as air and liquid, may be not meeting the requirements. Pulsating heat pipe may be more effective but needs to be well designed. In addition, progress in developing new high temperature material is very difficult. PCM for battery thermal management is a better selection than others. Nevertheless, thermal conductivity of the PCMs such as paraffin is low and some methods are adopted to enhance the heat transfer of the PCMs. The performance and thermo-mechanical behaviors of the improved PCMs in the battery thermal management system need to be investigated experimentally. And the possibility of the heat collection and recycling needs to be discussed in terms of energy saving and efficient.

/pdf/a-review-of-power-battery-thermal-energy-management-qsxgc8m4tk.pdf

A review of power battery thermal energy management

https://cyberleninka.org/article/n/1370639.pdf

Policy mixes for sustainability transitions: An extended concept and framework for analysis

Power train electrification is promoted as a potential alternative to reduce carbon intensity of transportation. Lithium-ion batteries are found to be suitable for hybrid electric vehicles (HEVs) and pure electric vehicles (EVs), and temperature control on lithium batteries is vital for long-term performance and durability. Unfortunately, battery thermal management (BTM) has not been paid close attention partly due to poor understanding of battery thermal behaviour. Cell performance change dramatically with temperature, but it improves with temperature if a suitable operating temperature window is sustained. This paper provides a review on two aspects that are battery thermal model development and thermal management strategies. Thermal effects of lithium-ion batteries in terms of thermal runaway and response under cold temperatures will be studied, and heat generation methods are discussed with aim of performing accurate battery thermal analysis. In addition, current BTM strategies utilised by automotive suppliers will be reviewed to identify the imposing challenges and critical gaps between research and practice. Optimising existing BTMs and exploring new technologies to mitigate battery thermal impacts are required, and efforts in prioritising BTM should be made to improve the temperature uniformity across the battery pack, prolong battery lifespan, and enhance the safety of large packs.

/pdf/a-critical-review-of-thermal-management-models-and-solutions-4ckn8yrgfu.pdf

A critical review of thermal management models and solutions of lithium-ion batteries for the development of pure electric vehicles

The Council and the European Parliament

The industrial sector is the largest users of energy around the world. Industrial motor uses a major fraction of total industrial energy uses. This paper describes a comprehensive literature review about electric motor energy analysis. This paper compiles latest literatures in terms of thesis (MS and PhD), journal articles, conference proceedings, web materials, reports, books, handbooks on electrical motor energy use, losses, efficiency, energy savings strategies. Different types of losses that occur in a motor have been identified and ways to overcome these losses explained. An energy audit that helps to identify motor energy wastages have been discussed extensively. As motors are the major energy users, different energy savings strategies such as use of high-efficient motor, variable speed drive (VSD), and capacitor bank to improve the power factor to reduce their energy uses have reviewed. Different policy measures (i.e. regulatory, voluntary and incentives based) to save motor energy use have been reviewed and presented in this paper. In this review, computer tools that can be used to analyze electric motors energy used has been discussed. Cost parameters to carry out economic analysis have been shown as well. Moreover, payback period for different energy savings strategies have been identified.

A review on electrical motors energy use and energy savings

https://www.rug.nl/staff/e.m.steg/oikonomoubecchisstegrussolilloenergy.pdf

Energy saving and energy efficiency concepts for policy making

Energy efficiency policy is expected to play a key role for meeting the European Union's energy targets (particularly for reduced energy demand and reduced CO2 emissions) using a range of policy instrument combinations. However, most analyses undertaken so far have focused on single-policy measures rather than developing a more generic framework for assessing to what extent a particular policy mix is effective and under which specific conditions. This paper both contributes to the theoretical literature on policy mixes and undertakes an empirical analysis of the current policy mixes in buildings efficiency policy in 14 European Union countries. Building on the existing literature, and using expert knowledge, an assessment of the interaction of 55 pairs of policies is presented. This identifies policy mixes likely to deliver more, less or the same energy savings in combination than singly. The theoretical assessment is compared with actual policy mixes present within the European Union, highlighting that combinations of multiple financial incentives may need further investigation. By bringing these forms of knowledge together, the paper suggests how buildings policy mixes could be made more effective, shows gaps in current knowledge and highlights key research needs.

http://eng.janrosenow.com/uploads/4/7/1/2/4712328/rosenow_et_al._2016_energy_efficiency_and_the_policy_mix.pdf

Energy efficiency and the policy mix

In this paper we analyze the concept of interactions between policy instruments addressing environmental, energy and climate change issues. Although discussion on such policies has been taking place for almost two decades, their interactions are not so sufficiently explored. Initially, we refer to literature on various types of interactions and we classify them. Furthermore, we construct a qualitative method that can assist policymakers in selecting an optimal policy mix. This method breaks down into numerous components, the areas where different policies interact, and facilitates the unveiling of potential overlaps and complementarities. These areas consist of categories as measure identification, objectives, scope, market arrangements, market flexibility, financing, technological parameters, timing, compliance parameters and institutional setup. In addition, it renders the possibility of combining different options and design elements of policies. Furthermore, a list of various criteria serves as an assessment tool for interactions, where a weighing factor and uncertainty parameters have been added, in order to produce an aggregate indicator of the ex-ante analysis of the policy mix selected. Through this method, we present a complete framework of discernment of diverse forms of environmental policy instruments.

/pdf/a-framework-on-interactions-of-climate-and-energy-policy-51tsueioqn.pdf

Vlasis Oikonomou

Papers

Energy saving and energy efficiency concepts for policy making

Energy efficiency and the policy mix

A framework on interactions of climate and energy policy instruments

“White and Green”: Comparison of market-based instruments to promote energy efficiency

Rewarding energy savings rather than energy efficiency: Exploring the concept of a feed-in tariff for energy savings