H.L. Hartman's research while affiliated with University of Alabama and other places
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Publications (4)
This revised edition presents an engineering design approach to ventilation and air conditioning as part of the comprehensive environmental control of the mine atmosphere. It provides an in-depth look, for practitioners who design and operate mines, into the health and safety aspects of environmental conditions in the underground workplace. The con...
Procedures for determining the operating point that results when a fan is connected to a mine and placed in operation have been a source of confusion for decades. A variety of techniques have been proposed, often to the detriment of the practicing ventilation engineer trying to apply the techniques to the many mine/fan matching problems encountered...
This paper discusses recent developments in the following areas of mine ventilation network theory and analysis: (1) a concept of sub-systems for multiple fan systems based on a special type of cutset of the network; (2) cutset operations for obtaining alternative network solutions; (3) network properties including the conditions for constant syste...
Citations
... To eliminate the risk of mine ventilation hazards, novel optimization scheme alternatives for the complex network variables should be adopted to be rapidly applied in case of emergency to eliminate hazards. Therefore, determination of the locations and sizes of these ventilation control devices representa main challenge in design and analysis of mine ventilation systems (Wang et al. 1985;Wu and Topuz 1987). ...
... In Eqs. (1) and (2), the airstream enthalpy E, which denotes the sum of enthalpies of dry air and water vapor, can be obtained by psychrometric relationships (McPherson 1993, Hartman et al. 1997, Knechtel 2011). Relative to a 0 • C datum, the enthalpy of moist air is ...
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... The accuracy of these calculations depends on correctly determining air temperatures, pressures and humidity. Because of the magnitude and direction of the airflow the system in the mine is affected by seasonal temperature changes (Hartman et al., 1997). ...
