Determination of shortcuts in ventilation units with energy recovery

• Autorzy: Deshko V. , Sukhodub I. , Phuc N. V.
• Języki publikacji: EN

Abstrakty

EN

The need to organize air exchange by means of mechanical ventilation is a crucial issue in air-tight buildings, especially in terms of air quality. The use of supply and exhaust ventilation system with heat recovery allows to reduce the cost of supply air heating and cooling. Plate recuperative heat exchangers are often used in small decentralized ventilation systems, having a sufficiently high efficiency. However, unintended air flows inside the unit may lead to a decrease in both the quality of supply air, and recovery effectiveness. The most popular methods for air leakages and shortcuts determination are pressure and tracer gas techniques. Analysis of air flow in ventilation systems with heat recovery can be performed using the method of measuring tracer gas concentration in certain points of the air-handling unit (AHU) [1, 2]. Theoretical and experimental study of such systems can be found in reference [3]. You can also find results of field study of volume flow unbalances and shortcuts in centralized and decentralized ventilation system [4, 5]. Internal shortcuts definition in AHU with plate heat exchangers was conducted using measurements of mass air flow rate in supply and exhaust channels, air inlet and outlet temperatures in heat exchanger and unit and appropriate air energy and mass balances [6, 7].

Słowa kluczowe

EN

ventilation systems; air exchange; air flow; shortcut

• Wydawca: Kielce University of Technology
• Czasopismo: Journal of New Technologies in Environmental Science
• Rocznik: 2017
• Tom: Vol. 1, nr 3
• Strony: 113--119
• Opis fizyczny: Bibliogr. 7 poz., rys., tab., wykr., wzory

Twórcy

autor

Deshko V.

• National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

autor

Sukhodub I.

• National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

autor

Phuc N. V.

• National Technical University of Ukraine “Igor Sikorsky Kyiv Polytechnic Institute”

Bibliografia

• [1] Manz H., Performance of single room ventilation units with recuperative or regenerative heat recovery / H. Manz, H. Huber, A. Schälin, A. Weber, M. Ferrazzini, M. Studer, Energy and Buildings, 2000, No 32, pp. 37-47.
• [2] Manz H., Impact of air leakages and short circuits in ventilation units with heat recovery on ventilation efficiency and energy requirements for heating / H. Manz, H. Huber, D. Helfenfinger, Energy and buildings, 2001, No 33, pp. 133-139.
• [3] Roulet C.-A., Real heat recovery with air handling units / C.-A. Roulet, F.D. Heidt, F. Foradini, M.-C. Pibiri, Energy and buildings, 2001, No 33, pp. 495-502.
• [4] Merzkirch A., Field tests of centralized and decentralized ventilation units in residential buildings - specific fan power, heat recovery efficiency, shortcuts and volume flow unbalances / A. Merzkirch, S. Maas, F. Scholzen, D. Waldmann, Energy and buildings, in press.
• [5] Merzkirch A., Volume flow unbalances and shortcuts in decentralized and centralized ventilation units - field tests in residential buildings / A. Merzkirch, S. Maas, F. Scholzen, D. Waldmann, 45th KGH HVAC&R conference, Belgrad, 2014, http://hdl.handle.net/10993/22936.
• [6] Deshko V.І., The efficiency of heat recovery in recuperative heat exchangers of ventilation systems / V.І. Deshko, I.O. Sukhodub, S.O. Nagorna, Energy and Electrification, 2010, No 12, pp. 37-43.
• [7] Deshko V.І., Energy balance of ventilation system with energy recovery / V.І. Deshko, I.O. Sukhodub, А.V. Popkov, Building constructions, 2014, No 77, pp. 213-216.

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).