Boundary Layer Climates.

World-wide water scarcity, especially in the developing world, indicates a pressing need to develop inexpensive, decentralized small-scale desalination technologies which use renewable resources of energy. This paper provides a comprehensive review of the state-of-the-art in one of the most promising of these technologies, solar-driven humidification–dehumidification (HDH) desalination. Previous studies have investigated many different variations on the HDH cycle. In this paper, performance parameters which enable comparison of the various versions of the HDH cycle have been defined and evaluated. To better compare these cycles, each has been represented in psychometric coordinates. The principal components of the HDH system are also reviewed and compared, including the humidifier, solar heaters, and dehumidifiers. Particular attention is given to solar air heaters, for which design data is limited; and direct air heating is compared to direct water heating in the cycle assessments. Alternative processes based on the HDH concept are also reviewed and compared. Further, novel proposals for improvement of the HDH cycle are outlined. It is concluded that HDH technology has great promise for decentralized small-scale water production applications, although additional research and development is needed for improving system efficiency and reducing capital cost.

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The potential of solar-driven humidification–dehumidification desalination for small-scale decentralized water production

HVAC system optimization for energy management by evolutionary programming

http://123seminarsonly.com/seminar-reports/032/39932626-applied-energy-nano-fluids-for-heating.pdf

Application of nanofluids in heating buildings and reducing pollution

Effects of Wall's thermophysical properties on time lag and decrement factor

I INTRODUCTION 1 Introduction to Heating, Ventilating, Air Conditioning, and Refrigeration 2 Review of Thermodynamics, Fluid Mechanics, and Heat Transfer II REFRIGERATION 3 Mechanical Vapor-Compression Refrigeration Cycles 4 Mechanical Vapor-Compression Refrigeration Components and Systems 5 Absorption Refrigeration 6 Ultralow-Temperature Refrigeration: Cryogenics III PSYCHROMETRICS 7 Thermodynamic Properties of Moist Air 8 Psychometric Processes and Applications 9 The Psychrometer and Humidity Measurement IV HEAT- AND MASS-TRANSFER PROCESSES AND APPLICATIONS 10 Direct-Contact Transfer Processes Between Moist Air and Water 11 Heating and Cooling of Moist Air by Extended Surface Coils 12 Human Thermal Comfort and Indoor Air Quality 13 Solar Radiation V HEATING- AND COOLING-LOAD CALCULATIONS IN BUILDINGS 14 Winter Design Heat Loss 15 Instantaneous Heat Gain 16 Instantaneous Cooling Load 17 Energy-Estimation Methods VI AIR AND WATER DISTRIBUTION SYSTEM DESIGN 18 Air-Distribution System and Duct Design 19 Hydronic System Operation and Design Appendix A Thermodynamic and Thermophysical Property Tables Appendix B Weather Data Appendix C Refrigerant, Cryogenic, and Psychrometric Charts Index

James L. Threlkeld

Papers

Thermal Environmental Engineering