Cálculo de carga térmica e seleção de equipamentos para câmara frigorífica usando o Microsoft Excel®

Abstract

Refrigeration has applications in many fields of human life and extends from the household to industrial use and transportation. The study was focused on the sizing of cold rooms, this storage space is any isolated site, which has its internal conditions controlled by a cooling system. The cold storage is the most common method used to preserve perishable products with desirable characteristics, ensuring lower quality losses and increasing service life. The objective of this study was to determine the heat load and selection of a cold storage equipment. For this, a spreadsheet in Microsoft Excel® in order to facilitate the design of such equipment and a more simplified methodology was developed and, therefore, more accurate results and more reliably. Using preset parameters are analyzed various air properties that vary depending on the camera location and, after that, it was possible to develop the worksheet, first, calculate the heat load. Finally, with the definition of total average hourly load database was possible to select the equipment. Thus, it was possible to get the equipment from the demanded load on the sheet input data to the predetermined refrigerated environment