Design and Development of Performance Rating Apparatus for Cold Room Refrigeration Unit Using Cooling-Load Balance MethodArruck Tragangoon, Khemapat Tontiwattanakul, Montri Ngamprukvanit and Chayanon SerttikulE3S Web Conf., 428 (2023) 01006DOI: https://doi.org/10.1051/e3sconf/202342801006