Modeling of air handling processes in systems of conditioning premises

Abstract

Production premises should be provided with air conditioning in order to ensure and maintain required indoor climate parameters for proper technological process running. The paper presents analytical dependences that allow assessing the amount of heat supplied into a premise of processing meat products. A method of determining air parameters was proposed for implementing central conditioning under a technological process running in a premise. For a warm season, the air handling processes that involve or do not involve after-warming were drawn up using Id-chart depicting the state of humid air; the need for air recirculation was observed. The need for dehumidification of inlet air was defined and recommendations were proposed to be fulfilled. The method for evaluation of recirculation air amount was amended. For a cold season, the air handling processes that involve or do not involve preheating were drawn up using Id-chart depicting the state of humid air; the system of free cooling was proved reasonable to apply.

Automation of primary crushing control

“…The method of passive experiment is based on the registration of the controlled parameters of the process in the mode of normal operation of the object without introducing any deliberate perturbations into it. The method of active experiment is based on the use of certain artificial perturbations introduced into the object according to a pre-planned program [5].…”

Application of ethylene glycol in ventilation systems with variable air flow

“…Determination of the parameters of the intermediate heat and cold carrier depending on the heat and technical efficiency of the air treatment process at tout=35 о С Thus, the dependence of the parameters of the heat exchange equipment and the operating modes of the transformed room is established. The regularities in the regulation of the system operation depending on the change in the load on the system are revealed.The cooling capacity of the installation is determined depending on the modes of use of the room at the outdoor temperature according to the formula[9][10][11]: air consumption, kg/h; o I the enthalpy of the outdoor air in the warm season, kJ/kg; c I -enthalpy of air leaving the air cooler, kJ/kg.The results of calculating the dependence of the ethylene glycol temperature at the inlet and outlet of the refrigerator on the cooling capacity refr Q are shown inFig. 7 and fig.…”