engleski

New method for calculating hourly energy need in HVAC systems

This paper presents a new methodology for calculation of hourly energy need, which is incorporated in Croatian national Algorithms, used for energy performance certification of buildings. In the paper, the simple hourly method from HRN EN ISO 13790 standard, used for calculation of hourly energy need for heating and cooling, is demonstrated. Also, the new approach for determining the energy need for mechanical ventilation, introduced in Algorithm for calculation of the energy need in HVAC systems, is described. This new approach enables use of demonstrated simple hourly method in the calculations of HVAC systems. The given calculation examples are performed for a Croatian reference dwelling, equipped with two different HVAC systems. The calculation results are compared against those obtained from the quasi-steady state monthly method, also described in Algorithms.

energy need for heating and cooling ; HVAC systems ; energy performance certification of buildings ; simple hourly method

nije evidentirano