The Photovoltaic/thermal (PV/T) system combines the conventional PV panel with solar collector into one integrated system, which could achieve function of generating power and providing thermal energy at same time. Recently, it has become most promising for building applications. Most PV/T systems use water as coolant, cause freezing problem in winter. To overcome this problem, heat pipe is dev...

The geometry of a collector is one of the important factors that can increase the incident radiation on the collector surface. In the present study, the incident radiation for a stationary collector with cone geometry, i.e. a conical collector, is theoretically and experimentally investigated. This type of collector is always stable and does not need a fixture to install. Moreover, it has a...

In the present work, a prototype of a new type of solar collectors, which called Direct Absorption Solar Collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. Different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

The garbage collector presented in this paper makes use of two well known compaction garbage collection algorithms with very diierent performance characteristics: Cheney's two-space copying collector and Jon-ker's single-space sliding compaction collector. We propose a scheme which allows either collector to be used. The run-time memory requirements of the program being executed are used to det...

in the present work, a prototype of a new type of solar collectors, which called direct absorption solar collector, was built and its thermal performance is experimentally compared with conventional flat plate solar collector under transient and steady state conditions. different volume fractions of multi wall carbon nanotubes in water and ethylene glycol mixture (70%:30% in volume) were used a...

the geometry of a collector is one of the important factors that can increase the incident radiation on the collector surface. in the present study, the incident radiation for a stationary collector with cone geometry, i.e. a conical collector, is theoretically and experimentally investigated. this type of collector is always stable and does not need a fixture to install. moreover, it has a sym...

<em>Solar water heater is a device that uses solar collectors to absorb radiation and convert it into heat energy water. The type of collector the flow rate used affect thermal efficiency heater. This research with serpentine configuration copper pipe material applies 1 lpm. purpose this determine effect on produced by configuration. quantitative research, experimental methods. was conduc...