The performance of a solar sorption refrigerator is studied experimentally for three configurations of its collector cover : with Single glazing, with double glazing and with single glazing plus transparent insulation. The collector consists of fifteen stainless steel tubes having a selective surface (with good thermal absorption coefficient) and contains granular activated carbon adsorbent with ammonia refrigerant. The collector surface area is approximately 1.43 m(2) and contains about 17 kg of carbon. The collector operates with good efficiency (36 to 47% depending on conditions) when in the single glazing configuration.