An air heater, in which the air first flows between metallic and cover plates and is then made to flow between two metallic plates in opposite direction, is discussed theoretically. The governing equations of the model are solved explicitly under suitable conditions. The measured values of the...

This article describes the results of a simulation study of a forced-circulation solar hybrid domestic hot water system (SHDHW) that circulates air through a rockbed air heater and employs an external air-to-water, transverse fin, shell-and-tube heat exchanger to transfer heat from the air to...

The temperature dependence of the overall heat-loss coefficient for flat-plate collectors has been studied by using stagnation measurements made with different configurations, viz., tilt 45 °s with single and double glazing and tilt 0 ° with single glazing. Comparisons have been made with...

Low-efficiency, rice-husk-based furnace-boiler systems are generally used for meeting thermal energy demand of paddy parboiling in India. Shortages in rice-husk availability are met with fuels such as coal, furnace oil, etc. Besides steam at low pressures, paddy parboiling operations require hot...