Abstract: A solar collector subsystem operating threshold is defined as the minimum solar insolation rate at which useful heat can be collected when collector loop piping heat losses and parasitic power ...

Abstract: The effects of design and installation features on the overall efficiency of solar heating and cooling systems are evaluated. Solar system piping and thermal storage heat losses and parasitic ...

Abstract: There is a well established tradition for the use of dynamic test procedures, in the determination of the real characteristics of structures. These concepts have been extended by taking measurements of the bridge vibrations ...

Abstract: Many problems face engineering education today. Among them are the four‐year program, faculty, and the preparation of graduates for the practice of engineering. Proposed solutions have been addressed in the recent report ...

Abstract: Modern drip-irrigation technologies improve water-use efficiency while simultaneously transforming areas that are not otherwise irrigable in practice (too distant or too high to be reached by surface waters). Although drip ...

Abstract: A one-fifth model reinforced-concrete beam-slab bridge deck was tested to destruction, and the vibrational response to ambient excitation was measured at different stages of cracking and spalling. Observations showed that ...

Abstract: Laboratory tests on a model reinforced-concrete beam-slab bridge deck were briefly described in the first part of this two-part paper. These results and some theoretical studies were used to support the possibility that ...

Abstract: Urban areas are facing challenges for the provision of public services, with water scarcity arising as one of the main problems. A twin track approach of supply and demand management is essential, and water-loss management ...