THE DESIGN AND ANALYSIS OF EXPERIMENTS. By Oscar Kempthorne. New York, John Wiley and Sons, Inc., 1952. 631 pp. $8.50. This book by a teacher of statistics (as well as a consultant for \"experimenters\") is a comprehensive study of the philosophical background for the statistical design of experiment. It is necessary to have some facility with algebraic notation and manipulation to be able to use the volume intelligently. The problems are presented from the theoretical point of view, without such practical examples as would be helpful for those not acquainted with mathematics. The mathematical justification for the techniques is given. As a somewhat advanced treatment of the design and analysis of experiments, this volume will be interesting and helpful for many who approach statistics theoretically as well as practically. With emphasis on the \"why,\" and with description given broadly, the author relates the subject matter to the general theory of statistics and to the general problem of experimental inference. MARGARET J. ROBERTSON

The Design and Analysis of Experiments

Phase change materials for thermal energy storage

Thermal energy storage technologies and systems for concentrating solar power plants

Review of passive PCM latent heat thermal energy storage systems towards buildings’ energy efficiency

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.

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A review of power battery thermal energy management

Regularization opportunities for the diffuse optical tomography problem

Analyse du transfert radiatif instationnaire en milieu semi-transparent absorbant et diffusant

This article presents selected problems used to assess the validity and usefulness of a first-order skew, positive coefficient, upwind scheme (SPCUS) applied to radiative transfer. This particular procedure could be incorporated in several discretization methods such as finite-volume, finite-element, or control-volume finite-element methods for the prediction of radiative transfer in participating media. The suggested scheme has been validated by application to several basic two-dimensional test problems, acknowledged by the radiative heat transfer community, and its performance has proven to be good.

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A Consistent Interpolation Function for the Solution of Radiative Transfer on Triangular Meshes, II—Validation

Cet article presente un schema numerique du premier ordre stable, economique et relativement precis, garantissant des coefficients positifs aux equations de discretisation et s'adaptant a la direction de propagation du rayonnement. L'implantation en deux dimensions resulte en des predictions de la luminance discrete plus precises que celles obtenues avec le schema amont et plus economiques que celles produites avec le schema exponentiel.

Une fonction d’interpolation produisant des coefficients positifs pour le rayonnement

This work presents an experimental methodology used to characterize the thermal performances of unglazed transpired collectors (UTC). The main relevant parameters that were measured are: the absorber plate temperature, the ambient temperature, and the air outlet temperature. As a general conclusion, it was found that an increase in irradiation has about twice the impact on the thermal performances of any of the panel investigated parameters than the diameter of the perforations. Ongoing research is now carried out with actual and potential Canadian manufacturers to improve the design methodology and optimize this type of collector to eastern Canada climate.

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Daniel R. Rousse

Papers

Regularization opportunities for the diffuse optical tomography problem

Analyse du transfert radiatif instationnaire en milieu semi-transparent absorbant et diffusant

A Consistent Interpolation Function for the Solution of Radiative Transfer on Triangular Meshes, II—Validation

Une fonction d’interpolation produisant des coefficients positifs pour le rayonnement

Experimental characterization of an unglazed transpired solar collector