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The application of thermoelectric generator (TEG) systems in waste heat recovery has attracted more and more attention. In this work, the effect of interfacial heat transfer on the performance of TEG module was experimentally and numerically investigated. Three kinds of thermal greases with thermal conductivities of 2.0, 2.5, and 3.0 W/(m∙K) were used as thermal interface materials (TIMs) to improve interfacial heat transfer at different external pressures ranging from 0.1 to 0.4 MPa. The open-circuit voltage, output power, and thermal interfacial resistance were measured at different experimental conditions. It was found that the performance of the TEG module can be greatly improved by using thermal greases as TIMs. The open-circuit voltages increased from 1.73 to either 3.07, 3.4, or 3.57 V with k = 2.0, 2.5, and 3.0 W/(m∙K) thermal greases respectively used as TIMs when the temperature difference was 60 °C and external pressure was 0.1 MPa. However, the performance of the TEG was slightly affected by external pressure when thermal greases used as TIMs. The open-circuit voltages were 3.07, 3.13, 3.17, and 3.20 V at external pressures of 0.1, 0.2, 0.3, and 0.4 MPa when the temperature difference ΔT = 60 °C and k = 2.0 W/(m∙K) thermal greases were used as TIMs.

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The existing literature does not provide adequate insight into the initial diffusion of new management practices, especially those that yield no immediate economic benefits, and have not yet gained legitimacy. We study how firms' local institutional environments influence early adoption behavior, examining the spread of corporate social responsibility (CSR) reports in China's banking industry from 2006 to 2011. We find that banks are more likely to be first movers of CSR reporting if they operate in communities where more companies publish CSR reports or where there are guidelines encouraging CSR reporting, and the impacts of these two institutional factors are further moderated by the length of time that banks have operated in communities. Our study highlights the usefulness of institutional theory in understanding the initial adoption of new management practices, when the organizational field is defined as a geographic community instead of an industry sector and its supply chain.