Review of Experimental Study of Carbon Dioxide as Working Fluid Integrated with Phase Change Material in Solar Receiver

In this project work, Carbon dioxide using as a working fluid integrated with PCM in the solar receiver is experimentally investigated. Scheffler reflector is applied to get additional solar vitality on the cavity receiver surface. Cavity receiver is designed inside this kind of way in which it can obtain the maximum sun radiation which had been felling on their surface and decrease the heat losses. Apart from the cavity surface staying all surfaces have been completely insulated to be able to reduce the heat loss. PCM can be used to be able to store heat and help to make use of that once the photograph voltaic energy is not available. PCM’s store the power during sunlight hours or getting time. The saved energy is utilized to heat the particular CO₂ gas and generates hot CO₂ gas throughout off-shine hours or even discharging time. CO₂ Brayton cycle consists of a solar receiver, turbocharger, shell and tube heat exchanger, and micro-generator connected with the turbocharger. Acetanilide is using as a PCM in the solar receiver which is gain thermal energy from the sun rays. The melting point of PCM is 113 °C. In the cycle, the lower limit and upper limit of pressure are 75 bar and 130 bar to assemble the compressor (turbocharger) specification. The proper number of thermocouples inserted for typically the identification of thermodynamic state at k-type thermocouples across the solar receiver, condenser, and also inserted thermocouple inside the receiver surface. The mass flow rate control valve is placed at the delivery side of the compressor to control the flow rate. A micro-generator is connected with the turbocharger to generate power. The pressure relief valve is placed between the receiver and turbine (turbocharger) and between the receiver and compressor (turbocharger). Tubes of 25 mm nominal inner diameter with a wall thickness of 1.5 mm. Tube material using SS316L. Typical, the results display that this solar receiver with each other with phase-change heat storage components works extremely well along with a good off the turbocharger concerning power generation within the particular solar Brayton cycle.