Question 43Refrigeration & AC - Assistant Engineer

The correct answer is A) 100%. In a multi-box refrigeration system with a compressor designed to have six of its eight cylinders controlled for variable load conditions, if all of the reefer boxes are currently feeding, then all six of the controllable cylinders will be loaded after start-up. This means that 100% of the total number of compressor cylinders (6 out of 8) will be utilized to meet the cooling demand from the active reefer boxes. The other answer choices are incorrect because: B) 50% would be wrong since 6 out of 8 cylinders are in use, not half; C) 25% would be wrong since more than a quarter of the cylinders are in use; and D) 0% would be wrong since the compressor is actively running to meet the cooling demand.