Thermal performance study of a vacuum integrated solar storage collector (ISSC) with compound parabolic concentrator (CPC)

Abstract

This paper deals with the energy performance of a new integrated solar storage collector (ISSC) with compound parabolic concentrator (CPC) conceived in the Thermal Process Laboratory in CRTEn Borj Cedria (North of Tunisia). The novelty in this system is the use of transparent vacuum insulation in the annulus between double half-Cylindrical Plexiglass, and the use of automated nocturnal insulation system, which suppresses heat loss during night. Also, the system is equipped with a mobile support permitting to have many collector orientations toward south, east-south, and west-south in order to maximize the incident solar flux. The experimental study of the ISSC system showed that the thermal loss coefficient of ISSC system is equal to 6.16 W/K

A non‐tracking semi‐circular trough solar concentrator

“…Since the 1970s there have been hundreds of papers on the design, performance and application of very many concentrators based upon the CPC principle. To quote only a few examples, there are papers reporting the performance and efficiency of CPC troughs with various absorber shapes, [8][9][10][11] applications to hot water heating, [12][13][14][15][16][17] to refrigeration, [18][19][20] to chemical processes 21 and for water de-salination. 22 In a recent paper 23 it is suggested to mount an assembly of standard double-wall CPC on the side of buildings for water heating applications.…”

Dynamic testing of a new integrated collector storage solar water heater (ICSSWH) according to standard ISO 9459‐5: Use of a numerical approach for long‐term prediction in different climatic conditions

“…For the Integrated Collector Storage Solar Water Heater (ICSSWH), several studies [15][16][17][18][19] have been conducted to show its performances with respect of other existing and well marketed technologies.…”

“…For the Integrated Collector Storage Solar Water Heater (ICSSWH), several studies 15–19 have been conducted to show its performances with respect of other existing and well marketed technologies. Souliotis et al 20 used ray tracing techniques to study the distribution of solar irradiance on the absorbing surface of an ICS system.…”