Proceedings. Impacts of static pressure set level on the HVAC energy consumption and indoor conditions. Symposium on Improving Building Systems in Hot and Humid climates [10, 13-14 may 1996, Texas].

Texas Building Energy Institute ... [et al.].
Liu, Mingsheng. Zhu, Yequiao. Claridge, David E.

1996

3099
CIENA

Air static pressure must be maintained at a certain level leaving the air-handdind unit(AHU) to force a suitable amount of air through the terminal boxes. However, an excessive static pressure level is often used due to (1) lack of a control device in a constant volume system(CV); (2)malfunctioning control device in a variable volume(VAV) system; and (3) fear of failure to mantain room temperature. High static often develops excessive damper leakage in older mixing boxes. This result in an inappropiate mixing of hot and cold air and an excessive amount of air entering the space. Consequently, the actual fan power, heating and cooling energy consumption all become sigificantly higher than the desing values. Even worse, the system may not be able to mantain roon conditions due to unwanted simultaneous heating and cooling, and may be noisy due to the excessive static pressure. This paper proposes to control the hot duct pressure and the Variable Frecuency Drives to control the fan static i.e. the cold duct pressure. Both a theorical analysis and a case study results are presented in this paper..

Presenta gráfs. y tbls.

ESTADOS UNIDOS; PRESION DEL AIRE; CONSUMO DE ENERGIA; DUCTOS; ESTUDIOS DE CASOS; AIRE CALIENTE; AIRE FRIO; CONTROL; TEMPERATURA;