Abstract
The paper has analysed the state-of-art technology for a solar photovoltaic distributed energy source appliance. The success of implementation of photovoltaic (PV) power project is increased when PV module system is integrated with building design process and is used as multi purpose appliance for use with building elements. The improvement in overall system efficiency of building integrated PV modules embedded in building façade is achieved by minimizing and capturing energy losses. A novel solar energy utilisation technology for generation of electric and thermal power is presented by integration of ventilation and solar photovoltaic device with the heating, ventilating and air conditioning (HVAC) system. The testing appliance named as photovoltaic duct wall was a wooden frame assembly of double wall with air ventilation: two adjacent glass coated PV modules, air column, plywood board filled with polystyrene and dampers. The measurement data is collected from various sensors to read measurements of solar intensity, ambient air temperature, room air temperature, electric power, surface temperatures of PV modules and plywood board, air velocities and air temperatures in the air column. The enhancement in the air velocity of the air column is fulfilled with an exhaust fan fixed in an outdoor room. The simulation model is used to perform the two dimensional energy analyses with applied one dimensional solution of steady state heat conduction equations. The bases of simulation model are conjugating energy travel paths with network boundary conditions of convection, radiation exchange, heat storage ca- pacity, thermal storage capacity and heat transport.
Highlights
With increase in cost of fuel and electricity and increase in greenhouse gas productions, there is a rise in activity trend towards use of solar energy utilisation technologies for energy and environment conservation
The testing appliance named as photovoltaic duct wall was a wooden frame assembly of double wall with air ventilation: two adjacent glass coated PV modules, air column, plywood board filled with polystyrene and dampers
The air temperatures in photovoltaic duct wall are developed as a function of magnitude of the ambient air temperature
Summary
With increase in cost of fuel and electricity and increase in greenhouse gas productions, there is a rise in activity trend towards use of solar energy utilisation technologies for energy and environment conservation. The traditional techniques of passive solar heating are applied in buildings since historical times by generation of solar heat and transmission of heat flow inside the building with use of thermo siphon principle to move warm air [1,2,3,4]. The active solar systems make use of mechanical and electrical equipment such as fans and pumps to circulate the heat of fluid effectively [5,6,7]. The examples of active solar systems are roof top collectors for heating of water and air for inside use in the building. In active space heating systems, either air or liquid or phase changing material is used to collect solar heat and to supply to the occupied space either directly or its heating load is combined with building heating utility system. Solar energy is used to operate cooling equipment by supplying solar heat to any of several types of heat generation cycles
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