This book provides a practical studyof modern heat pipe engineering, discussing how it can be optimized for use on a wider scale. An introduction to operationaland design principles, this book offers a review of heat and mass transfer theory relevant to performance, leading into and exploration of the use of heat pipes, particularlyin high-heat flux applications and in situations in which there is anycombination of non-uniform heat loading, limited airflow over the heat generatingcomponents, and space or weight constraints. Key implementation challenges are tackled, including load-balancing, materials characteristics, operating temperature ranges, thermal resistance, and operating orientation. With its presentation of mathematicalmodels to calculate heat transfer limitations and temperature gradient of bothhigh- and low-temperature heat pipes, the book compares calculated results withthe available experimental data. It also includes a series of computerprograms developed by theauthor to support presented data, aid design, and predict performance.